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A Novel Nano-Structured Die Steel with High Strength and High Thermal Stability 认领 引用
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作者 Xinhao Li Jieli Ma +1 位作者 Yiren Wang Yong Jiang 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2025年第9期1591-1603,共13页
A novel oxide-dispersion-strengthened(ODS)die steel was fabricated by mechanical alloying and hot consolidation.Annealing and quench-tempering treatments both obtained an ultra-fine grain structure(mean size:310-330 n... A novel oxide-dispersion-strengthened(ODS)die steel was fabricated by mechanical alloying and hot consolidation.Annealing and quench-tempering treatments both obtained an ultra-fine grain structure(mean size:310-330 nm)with an ultra-high density of ultra-fine Y-Al-O nano-oxides(number density:~(1-1.5)×1023m−3,mean size:5.1-7.2 nm).Prolonged thermal exposure further induced the new,highly dense precipitation of ultra-fine Y-Zr-O nano-oxides.Both nano-oxides tended to be wrapped up with a B2-NiAl nano-shells.Although the quench-tempered sample showed much higher room-temperature strength(yield strength=1393±40 MPa and ultimate tensile strength=1774±11 MPa)and slightly lower elongation(elongation=13.6%±0.6%)than the annealed sample(YS=988±7 MPa,UTS=1490±12 MPa,and EL=15.2%±1.1%),both samples exhibited better strength-ductility synergy at room temperature and much higher thermal stabilities at high temperatures(600-700℃)than all those conventional hot-work die steels,which makes the new ODS steel highly promising for advanced hot-work mold and die applications at high temperatures above 600℃. 展开更多
关键词 Hot-work die steel Oxide-dispersion-strengthened Nano-structure Core-shelled Thermal stability
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Hyaluronic acid derivative-modified nano-structured lipid carrier for cancer targeting and therapy 认领 引用 被引量：4
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作者 Xiao LIU Hai LIU +1 位作者 Su-lan WANG Jing-wen LIU 《Journal of Zhejiang University-SCIENCE B》 SCIE CAS CSCD 2020年第7期571-580,共10页
To reduce the problems of poor solubility,high in vivo dosage requirement,and weak targeting ability of paclitaxel(PTX),a hyaluronic acid-octadecylamine(HA-ODA)-modified nano-structured lipid carrier(HA-NLC)was constr... To reduce the problems of poor solubility,high in vivo dosage requirement,and weak targeting ability of paclitaxel(PTX),a hyaluronic acid-octadecylamine(HA-ODA)-modified nano-structured lipid carrier(HA-NLC)was constructed.HA-ODA conjugates were synthesized by an amide reaction between HA and ODA.The hydrophobic chain of HA-ODA can be embedded in the lipid core of the NLC to obtain HA-NLC.The HA-NLC displayed strong internalization in cluster determinant 44(CD44)highly expressed MCF-7 cells,and endocytosis mediated by the CD44 receptor was involved.The HA-NLC had an encapsulation efficiency of PTX of 72.0%.The cytotoxicity of the PTXloaded nanoparticle HA-NLC/PTX in MCF-7 cells was much stronger than that of the commercial preparation Taxol.In vivo,the HA-NLC exhibited strong tumor targeting ability.The distribution of the NLCs to the liver and spleen was reduced after HA modification,while more nanoparticles were aggregated to the tumor site.Our results suggest that HA-NLC has excellent properties as a nano drug carrier and potential for in vivo targeting. 展开更多
关键词 Paclitaxel(PTX) Hyaluronic acid-octadecylamine(HA-ODA) Nano-structured lipid carrier(NLC) Tumor targeting In vivo distribution
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Preparation of nano-structured Ag solid materials and application to surface-enhanced Raman scattering 认领 引用 被引量：2
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作者 易早 陈艳 +5 位作者 陈善俊 谭秀兰 牛高 罗江山 唐永建 易有根 《Journal of Central South University》 SCIE EI CAS 2011年第6期1877-1882,共6页
Silver nano-particles with average diameter of about 60 nm were compacted in a high-strength mold under different pressures at 523 K to produce nano-structured Ag solid materials. The structure and characteristic of t... Silver nano-particles with average diameter of about 60 nm were compacted in a high-strength mold under different pressures at 523 K to produce nano-structured Ag solid materials. The structure and characteristic of the nano-structured Ag solid materials (NSS-Ag) were studied using X-ray diffraction (XRD), scanning electron microscope (SEM) and Raman spectrometer. The NSS-Ag could be used as highly efficient surface-enhanced Raman scattering (SERS) active substrates. The common probe molecules Rhodamine 6G (R6G, 1×10-10 mol/L) were used to test the SERS activity on these substrates at very low concentrations. It is found that the SERS enhancement ability is dependent on the density of NSS-Ag. When the relative density of NSS-Ag is 83.87%, the materials reveal great SERS signal. 展开更多
关键词 nano-structured Ag solid material flow-levitation method relative density Rhodamine 6G surface-enhanced Raman scattering
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Deposition mechanism of nano-structured single-layered C36 film on a diamond (100) crystal plane 认领 引用 被引量：2
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作者 陈明君 梁迎春 +1 位作者 袁屹杰 李旦 《Chinese Physics B》 SCIE EI CAS 2008年第11期4260-4267,共8页
The Brenner-LJ potential is adopted to describe the interaction between C36 clusters and diamond surface, and the deposition mechanism of multi-C36 clusters on the diamond surface is also studied by using the method o... The Brenner-LJ potential is adopted to describe the interaction between C36 clusters and diamond surface, and the deposition mechanism of multi-C36 clusters on the diamond surface is also studied by using the method of molecular dynamics simulation. The simulation results show that the competition effects of two interactions, i.e. the interaction between cluster and cluster and the interaction between cluster and crystal plane, are studied, and then the influence of these competition effects on C36 cluster deposition is analysed. The finding is that when an incident energy is appropriately chosen, C36 clusters can be chemically adsorbed and deposited steadily on the diamond surface in the form of single-layer, and in the deposition process the multi-C36 clusters present a phenomenon of energy transmission. The experimental result shows that at a temperature of 300K, in order to deposit C36 clusters into a steady nanostructured single-layered film, the optimal incident energy is between 10 and 18 eV, if the incident energy is larger than 18 eV, the C36 clusters will be deposited into an island nano-structured film. 展开更多
关键词 C36 clusters Brenner-LJ potential nano-structured single-layered film competition effect
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Preparation and Characterization of Nano-Structured SiO2 Thin Films on Carbon Steel 认领 引用 被引量：3
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作者 Rong Chun XIONG Dong Zhou YAN Gang WEI 《Chinese Chemical Letters》 SCIE CAS 2003年第11期1167-1170,共4页
Nano-structured SiO2 thin films were prepared on the surface of carbon steel for the first time by LPD. The compositions of the films were analyzed by XPS, and the surface morphology of the thin films were observed by... Nano-structured SiO2 thin films were prepared on the surface of carbon steel for the first time by LPD. The compositions of the films were analyzed by XPS, and the surface morphology of the thin films were observed by AFM. The thin films were constituted by compact particles of SiO2, and there was no Fe in the films. In the process of film forming, the SiO2 colloid particles were deposited or absorbed directly onto the surface of carbon steel substrates that were activated by acid solution containing inhibitor, and corrosion of the substrates was avoided. The nano-structured SiO2 thin films that were prepared had excellent protective efficiency to the carbon steel. 展开更多
关键词 Carbon steel sodium silicate nano-structured SiO2 thin films AFM.
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Fabrication and Microstructural Control of Nano-structured Bulk Steels: A Review 认领 引用 被引量：1
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作者 Linxiu Du Shengjie Yao +3 位作者 Jun Hu Huifang Lan Hui Xie Guodong Wang 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2014年第3期508-520,共13页
There exist strong interests of developing nano-grained steels because of the outstanding properties including high strength/weight ratio, wear resistance, excellent toughness, and favorable cellular activity. This ar... There exist strong interests of developing nano-grained steels because of the outstanding properties including high strength/weight ratio, wear resistance, excellent toughness, and favorable cellular activity. This article reviews the main fabrication process and microstructural control of nano-structured steels over the last decades. Severe plastic deformation is considered as an effective route of obtaining the nano-grained microstructures. The process of cold-rolling and annealing of martensitic steel is a viable method to obtain bulk nano-structured low carbon steel, while the final thickness of the cold-rolling plate is limited. According to the theoretical results of the thermal simulation studies, a novel alloy design combined with the rapid transformation and rolling process is proposed to successfully fabricate nano-grained high strength bulk steel. The refinement mechanisms are expected to be taking advantage of increase in the transformation nucleation sites and inhibiting the grain coarsening. Moreover, corresponding mechanical properties are summarized. 展开更多
关键词 Nano-structured steel SPD Cold-rolling and annealing martensite RTRP Transformation mechanism Mechanical properties
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Electron emission degradation of nano-structured sp^2-bonded amorphous carbon films 认领 引用 被引量：1
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作者 鲁占灵 王昶清 +2 位作者 贾瑜 张兵临 姚宁 《Chinese Physics B》 CAS 2007年第3期843-847,共5页
The initial field electron emission degradation behaviour of original nano-structured sp^2-bonded amorphous carbon films has been observed, which can be attributed to the increase of the work function of the film in t... The initial field electron emission degradation behaviour of original nano-structured sp^2-bonded amorphous carbon films has been observed, which can be attributed to the increase of the work function of the film in the field emission process analysed using a Fowler-Nordheim plot. The possible reason for the change of work function is suggested to be the desorption of hydrogen from the original hydrogen termination film surface due to field emission current-induced local heating. For the explanation of the emission degradation behaviour of the nano-structured sp2-bonded amorphous carbon film, a cluster model with a series of graphite （0001） basal surfaces has been presented, and the theoretical calculations have been performed to investigate work functions of graphite （0001） surfaces with different hydrogen atom and ion chemisorption sites by using first principles method based on density functional theory-local density approximation. 展开更多
关键词 nano-structured sp^2-bonded amorphous carbon film field emission work function
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Nucleation of Y-Si-O Nano-clusters in Multi-microalloyed Nano-structured Ferritic Alloys:a First-principles Study 认领 引用
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作者 Shiyu He Qi Qian +4 位作者 Zhe Huang Yuxiang Gong Jiajing Chen Yiren Wang Yong Jiang 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2021年第7期955-962,共8页
First-principles energetics analyses were performed to investigate the nucleation of(Y-Si-O)nano-clusters(NCs)in nanostructured ferritic alloys(NFAs).It was predicted that the nucleation of(Y-Si-O)NCs follows the same... First-principles energetics analyses were performed to investigate the nucleation of(Y-Si-O)nano-clusters(NCs)in nanostructured ferritic alloys(NFAs).It was predicted that the nucleation of(Y-Si-O)NCs follows the same general pathway as previously found for(Y-Ti/Al/Zr-O)NCs in NFAs:they all tend to begin with the(O-O)pairs and grow to(O-Y)-cores and further to larger NCs by attracting Y and other solute elements nearby.Nucleation of a hexa-atomic-[2Y-Si-3O]-cluster can reduce the total energy by 4.71 eV.Among various microalloying-induced NCs,the nucleation preference ordering was predicted as(Y-Zr-O)>(Y-Ti-O)>(Y-Al-O)>(Y-Si-O).The number densities and chemical compositions of NCs in multi-microalloyed NFAs would largely depend on the number availability of(O,Y)-cores,as well as the relative abundance and atomic diffusivities of microalloying solute elements nearby. 展开更多
关键词 Nano-structured ferritic alloy Y-Si-O Nano-cluster First-principles
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High strength-ductility nano-structured high manganese steel produced by cryogenic asymmetry-rolling 认领 引用 被引量：3
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作者 Bin Fu Liming Fu +3 位作者 Shichang Liu Huan Rong Wang Wei Wang Aidang Shan 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2018年第4期695-699,共5页
A bulk nanostructured twinning-induced plasticity （TWIP） steel with high ductility and high strength was fabricated by cryogenic asymmetry-rolling （cryo-ASR） and subsequent recovery treatment. It was found that th... A bulk nanostructured twinning-induced plasticity （TWIP） steel with high ductility and high strength was fabricated by cryogenic asymmetry-rolling （cryo-ASR） and subsequent recovery treatment. It was found that the cryo-ASRed TWIP steels exhibit simultaneous improvements in the ductility, strength and work hardening. Typical microstructures of the cryo-ASR TWIP steel were characterized by shear bands and intensive mechanical nano-sized twins induced by cryogenic deformation. These mechanical nano-scale twins remain thermally stable during the subsequent recovery treatment. It is believed that the ductility enhancement and high work-hardening ability for the cryo-ASR TWIP steels should be mainly attributed to the high-densitv pre-existing nano-scale twins. 展开更多
关键词 Nano-structured TWIP steel Cryogenic deformation Asymmetric rolling （ASR） Nano-scale twins Work hardening ability
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The 18.3% Silicon Solar Cells with Nano-Structured Surface and Rear Emitter 认领 引用 被引量：1
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作者 Jun-Na Zhang Lei Wang +3 位作者 Zhun Dai Xun Tang You-Bo Liu De-Ren Yang 《Chinese Physics Letters》 SCIE EI CAS CSCD 2017年第2期122-125,共4页
A nano-structured surface is formed on the pyramid structure of n-type silicon solar cells by size-controlled silver nano-particle assisted etching. Such a nano-structure creates a front average weighted reflectance o... A nano-structured surface is formed on the pyramid structure of n-type silicon solar cells by size-controlled silver nano-particle assisted etching. Such a nano-structure creates a front average weighted reflectance of less than 2.5% in the 300-1200nm range due to the broadband reflection suppression. The sodium hydroxide is used to obtain the low-area surface by post-etching the nano-structure, thus the severe carrier recombination associated with the nano-structured surface could be reduced. After emitter forming, screen printing and firing by means of the industrial fabrication protocol, an 18.3%-efficient nano-structured silicon solar cell with rear emitter is fabricated. The process of fabricating the solar cells matches well with industrial manufacture and shows promising prospects. 展开更多
关键词 The 18.3 Silicon Solar Cells with Nano-Structured Surface and Rear Emitter
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Cobalt supported on CNTs-covered γ-and nano-structured alumina catalysts utilized for wax selective Fischer-Tropsch synthesis 认领 引用
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作者 Mohammad Reza Hemmati Mohammad Kazemeini +2 位作者 Farhad Khorasheh Jamshid Zarkesh Alimorad Rashidi 《Journal of Natural Gas Chemistry》 CSCD 2012年第6期713-721,共9页
Cobalt supported on carbon nanotubes （CNTs）-covered alumina has been recently developed and successfully utilized as a catalyst in Fischer-Tropsch synthesis （FTS）. Problems associated with shaping of Co/CNTs into ... Cobalt supported on carbon nanotubes （CNTs）-covered alumina has been recently developed and successfully utilized as a catalyst in Fischer-Tropsch synthesis （FTS）. Problems associated with shaping of Co/CNTs into extrudates or pellets as well as catalyst attrition rendered these materials unfavorable for industrial applications. In this investigation regular γ- and nano-structured （N-S） alumina as well as CNTs-covered regular γ- and N-S-alumina supports were impregnated by cobalt nitrate solution to make new cobalt-based catalysts which were also promoted by Ru. The catalysts were characterized and tested in a micro reactor to evaluate their applicability in FTS. γ-Al2O3 was prepared by calcination of bohemite and N-S-Al2O3 was prepared by sol-gel method using aluminum chloride as starting material. Catalyst evaluations indicated that N-S-Al2O3 was superior to regular γ-Al2O3 and that CNTs-covered alumina supports were favored over non-covered ones in terms of activity and heavy hydrocarbon selectivity. These were justified by porosimetric characteristics of the catalysts and existence of CNTs points of view. CNTs-covered catalysts also showed higher wax selectivity and better resistance to deactivation. Furthermore, TPR analysis indicated that the cobalt aluminate phase, which is responsible for the permanent deactivation of alumina supported Co-based catalysts, did not form on alumina supported Co-based catalysts covered with CNTs due to weaker interactions between cobalt and alumina. 展开更多
关键词 Fischer-Tropsch synthesis nano-structured alumina gamma alumina carbon nanotubes catalyst deactivation
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Research on the field emission mechanism of nano-structured carbon film 认领 引用
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作者 王艳燕 李英爱 +1 位作者 许基松 顾广瑞 《Chinese Physics B》 SCIE EI CAS CSCD 2012年第8期522-526,共5页
The field emission （FE） characteristics of nano-structured carbon films （NSCFs） are investigated. The saturation behaviour of the field emission current density found at high electric field E cannot be reasonably ... The field emission （FE） characteristics of nano-structured carbon films （NSCFs） are investigated. The saturation behaviour of the field emission current density found at high electric field E cannot be reasonably explained by the traditional Fowler-Nordheim （F-N） theory. A three-region E model and the curve-fitting method are utilized for discussing the FE characteristics of NSCFs. In the low, high, and middle E regions, the FE mechanism is reasonably explained by a modified F-N model, a corrected space-charge-limited-current （SCLC） model and the joint model of F N and SCLC mechanism, respectively. Moreover, the measured FE data accord well with the results from our corrected theoretical model. 展开更多
关键词 nano-structured carbon films field emission F-N theory space charge limited current,three-region electric field model
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Nano-structured hemoglobin-based oxygen carriers: from properties, methemoglobin suppression to long circulation in blood 认领 引用
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作者 YUAN Yuan ZHANG Xiao-lan +4 位作者 LIU Chang-sheng ZHAO Jian SHENG Yan SHAN Xiao-qian XU Feng 《东南大学学报（医学版）》 CAS 2011年第1期72-82,共11页
Due to the continuously insufficient supply and the disadvantages associated with the donated blood,artificial blood substitute has received extensive attentions throughoutthe world in recentyears.Nano-structured hemo... Due to the continuously insufficient supply and the disadvantages associated with the donated blood,artificial blood substitute has received extensive attentions throughoutthe world in recentyears.Nano-structured hemoglobin-based oxygen carriers （NHOCs）,in particular the liposome-encapsulated hemoglobin （LEH） and hemo-globin-based polymeric nanoparticles （HbPNPs）,which combine the nanotechnology with the traditional cellular oxygen carriers,have shown great potential applications in blood transfusion,thrombus and cancer therapy as well.The present article firstly reports on the current status of the synthesis,properties,clinical trial and application of the LEHand HbPNPs.And then,attentions are devoted to highlight the main challenges and the proposed strategies of the NHOCs with the respect of suppression of the methemoglobin formation and prolonging the blood circulation time.These results make us confident in advancing further development of NHOCs,with the expectation of their eventual commercialization. 展开更多
关键词 nano-structured hemoglobin-based oxygen carriers current status liposome-encapsulated hemoglo-bin hemoglobin-based polymeric nanoparticles review
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Comparative Assessment on Machinability of Nano-Structured Bainitic Steel and Titanium64 认领 引用
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作者 Ashwin Polishetty Chinmay Sonavane +1 位作者 Prasad Patil Guy Littlefair 《Journal of Materials Science and Chemical Engineering》 2014年第7期34-39,共6页
Titanium64 has characteristics well sought after for applications in demanding environments. In general, due to titanium64’s high performance, it is a material which requires careful and well considered machining app... Titanium64 has characteristics well sought after for applications in demanding environments. In general, due to titanium64’s high performance, it is a material which requires careful and well considered machining approaches in order to optimize the process. Nano-structured bainitic steel whilst having different application bases does none the less have similar machining and machinability short comes as that of titanium64. These similar characteristics have been compared and contrasted in this research study using parameters including cutting force, surface texture and metallography. The results tend to indicate that titanium64 has a poorer machinability characteristics compared to nano-structured bainitic steel. However, in terms of achieving greater surface texture characteristics, the nano-structured bainitic steel exhibited an enhanced capacity. 展开更多
关键词 Nano-Structured Bainitic Steel Titanuim64 Machinability Surface Roughness Cutting Force
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A Comparative Study on the Milling Speed for the Synthesis of Nano-Structured Al 6063 Alloy Powder by Mechanical Alloying 认领 引用
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作者 Hafeez Ahamed V. Senthil Kumar 《Journal of Minerals and Materials Characterization and Engineering》 2011年第6期507-515,共9页
The present article reports on characterization studies performed on amorphized nanostructured Al 6063 alloy powder synthesized by mechanical alloying (MA). The as-milled powder was characterized by X-ray diffraction ... The present article reports on characterization studies performed on amorphized nanostructured Al 6063 alloy powder synthesized by mechanical alloying (MA). The as-milled powder was characterized by X-ray diffraction (XRD) for investigating the development of crystallite nature and determining the different phases of the materials present, scanning electron microscope (SEM) was used for in depth morphological study and High Resolution-transmission electron microscope (HR-TEM) was employed to ensure the development of a nano-structured nature of the Al 6063 matrix. In the present work alloyed powder was milled for 20 h and 40 h at 300 rpm;and 20 h at 700 rpm in a hardened stainless steel medium. Using Williamson-Hall equation;crystallite size, lattice strain and lattice parameter of Al 6063 nanostructure alloy powder was estimated with broadening of XRD peaks. XRD results showed that the crystallite size of Al 6063 alloy powder reached 32 and 53 nm after 20 h at 700 rpm and 40 h at 300 rpm respectively. 展开更多
关键词 Nano-structured Al 6063 Synthesis.
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Enhancing Mechanical Stability of Nano-Structured Anti-Reflection Coatings 认领 引用
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作者 Behnam Kheyraddini Mousavi Tito Busani +1 位作者 Mani Hossein Zadeh Steven Roy Julien Brueck 《Journal of Applied Mathematics and Physics》 2020年第2期247-258,共12页
Periodic Nanostructured anti-reflection coatings (NALs) are a promising option for enhancing transmission of coherent light without inducing scattering. We’ve found that reducing the height of NALs below a critical v... Periodic Nanostructured anti-reflection coatings (NALs) are a promising option for enhancing transmission of coherent light without inducing scattering. We’ve found that reducing the height of NALs below a critical value to enhance mechanical stability can highly reduce the transmission efficiency. Here, using Rigorous Couples Wave Analysis (RCWA), we find the minimum height for over 99% transmission and effect of height on transmission bandwidth. Then, during a one-step plasma etching, two samples with different heights have been generated and their efficiency is evaluated using RCWA. 展开更多
关键词 Maximum Transmission Mechanical Stability Reflection Laser Nano-Structure
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Preparation of nano-structured pure rare-earth bulks by combining inert-gas condensation with SPS 认领 引用
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作者 ZHANG Jiu-xing SONG Xiao-yan +2 位作者 LU Nian-duan LI Er-dong YUE Ming 《功能材料信息》 2007年第5期37-39,共3页
A number of techniques have been developed to synthesize nanocrystalline bulk materials,including inert-gas condensation and consolidation,electrodeposition,severe plastic deformation,crystallization of amorphous soli... A number of techniques have been developed to synthesize nanocrystalline bulk materials,including inert-gas condensation and consolidation,electrodeposition,severe plastic deformation,crystallization of amorphous solid,surface mechanical attrition,and powder metallurgy.However,it is hard to produce the bulk with controllable nanostructures,especially with the grain sizes controllable in a wide range below 100 nm.In the conventional powder metallurgy,due to the fact that rapid coarsening of the particles occurs very often,even with the nanoparticles as the starting powder,grains in the scale of submicro-or even micrometer may form in the resultant bulk.Thus,in the preparation of bulk materials by the conventional powder-metallurgical processes,the grain size in the synthesized bulk is generally larger than the initial particle size. 展开更多
关键词 pure rare-earth bulk nano-structure spark plasma sintering(SPS)
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Integrated nano-structured silicon waveguides and devices for high-speed optical communications 认领 引用 被引量：1
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作者 Alan E. Willner 张林 +1 位作者 岳洋 武晓霞 《Chinese Optics Letters》 SCIE EI CAS 2010年第9期909-917,共9页
With progress in fabrication technology, integrated photonics plays an increasingly important role in high-speed optical communications, from monolithic transmitters and receivers for advanced optical modulation forma... With progress in fabrication technology, integrated photonics plays an increasingly important role in high-speed optical communications, from monolithic transmitters and receivers for advanced optical modulation formats to on-chip subsystems for optical signal processing. We review our recent work on the highly tailorable physical properties of silicon waveguides for communication and signal processing applications, using slot structures. Controllable chromatic dispersion, nonlinearity, and polarization properties of the waveguides are presented, and the enabled wideband wavelength conversion, optical tunable delay, and signal processing of polarization-multiplexing data channels are discussed. 展开更多
关键词 mode Integrated nano-structured silicon waveguides and devices for high-speed optical communications high
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Efficient and selective electro-reduction of nitrobenzene by the nano-structured Cu catalyst prepared by an electrodeposited method via tuning applied voltage 认领 引用
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作者 Yali CHEN Lu XIONG +2 位作者 Weikang WANG Xing ZHANG Hanqing YU 《Frontiers of Environmental Science & Engineering》 SCIE CSCD 2015年第5期897-904,共8页
Pollution caused by toxic nitrobenzene has been a widespread environmental concern.Selective reduction of nitrobenzene to aniline is beneficial to further efficient and cost-effective biologic treatment.Electro-chemic... Pollution caused by toxic nitrobenzene has been a widespread environmental concern.Selective reduction of nitrobenzene to aniline is beneficial to further efficient and cost-effective biologic treatment.Electro-chemical reduction is a promising method and Cu-based catalysts have been found to be an efficient cathode material for this purpose.In this work,Cu catalysts with different morphologies were fabricated on Ti plate using a facile electrodepositon method via tuning the applied voltage.The dendritic nano-structured Cu catalysts obtained at high applied voltages exhibited an excellent efficiency and selectivity toward the reduction of nitro-benzene to aniline.Effects of the working potential and initial nitrobenzene concentration on the selective reduction of nitrobenzene to aniline using the Cu/Ti electrode were investigated.A high rate constant of 0.0251 mini and 97.1%aniline selectivity were achieved.The fabri-cated nano-structured Cu catalysts also exhibited good stability.This work provides a facile way to prepare highly efficient,cost-effective,and stable nano-sWuctured electro-catalysts for pollutant reduction. 展开更多
关键词 nitrobenzene nano-structured Cu electro-reduction voltage-dependent electrodeposition high selec-tivity high stability
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Effect of metal surface morphology on nano-structured patterns induced by a femtosecond laser pulse and its experimental verification 认领 引用
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作者 宋海英 谭胜旺 +4 位作者 诗梦 张艳杰 刘世炳 李瑶 刘海云 《Chinese Optics Letters》 SCIE EI CAS CSCD 2018年第7期88-91,共4页
The effect of material surface morphology on the periodic subwavelength of nano-structures induced by a femtosecond（fs） laser was investigated systematically from the initial surface roughness, the different scratch... The effect of material surface morphology on the periodic subwavelength of nano-structures induced by a femtosecond（fs） laser was investigated systematically from the initial surface roughness, the different scratches, the pre-formed ripples, and the ＂layer-carving＂ technology experiments. The results of the comparative experiments indicate that the initial surface conditions of the target surface have no obvious effects on the spatial structured periods（SSPs） and the ripple orientation of the periodic nano-structures induced by a fs laser, which agreed well with the foretold present surface two-plasmon resonance（STPR） model. Furthermore, different shapes of nanogrids with high regularity and uniformity were obtained by fs-laser fabrication. 展开更多
关键词 Effect of metal surface morphology on nano-structured patterns induced by a femtosecond laser pulse and its experimental verification
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