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Preparation and performance of dye-sensitized solar cells based on ZnO-modified TiO_2 electrodes 认领 引用 被引量：2
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作者 Sheng-jun Li Yuan Lin +4 位作者 Wei-wei Tan Jing-bo Zhang Xiao-wen Zhou Jin-mao Chen Zeng Chen 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS 2010年第1期92-97,共6页
The ZnO-modified TiO2 electrode was prepared by adding Zn（CH3COO）2·2H2O to the TiO2 colloid during the sol-gel production process, and was used in dye-sensitized solar cells （DSCs）. The open circuit voltage ... The ZnO-modified TiO2 electrode was prepared by adding Zn（CH3COO）2·2H2O to the TiO2 colloid during the sol-gel production process, and was used in dye-sensitized solar cells （DSCs）. The open circuit voltage （Voc） and fill factor （if） of the cells were improved sig- nificantly. The performances of the ZnO-modified TiO2 electrode such as dark current, transient photocurrent, impedance, absorption spectra, and fiat band potential （Vfb） were investigated. It is found that the interface charge recombination impedance increases and Vfb shifts about 200 mV toward the cathodic potential. The effect mechanism of ZnO modification on the performance of DSCs may be that ZnO occupies the surface states of the TiO2 film. 展开更多
关键词 dye-sensitized solar cells TiO2 electrode modification photoelectrochemical properties
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Enhanced photoelectrocatalytic degradation of ammonia by in situ photoelectrogenerated active chlorine on TiO_2 nanotube electrodes 认领 引用 被引量：2
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作者 Shuhu Xiao Dongjin Wan +2 位作者 Kun Zhang Hongbin Qu Jianfeng Peng 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2016年第12期103-108,共6页
TiO2 nanotube （TINT） electrodes anodized in fluorinated organic solutions were successfully prepared on Ti sheets. Field-emission scanning electron microscopy （FE-SEM） and X-ray diffraction （XRD） were performed ... TiO2 nanotube （TINT） electrodes anodized in fluorinated organic solutions were successfully prepared on Ti sheets. Field-emission scanning electron microscopy （FE-SEM） and X-ray diffraction （XRD） were performed to characterize the TiNT electrodes. The linear voltammetry results under irradiation showed that the TiNT electrode annealed at 450℃ presented the highest photoelectrochemical activity. By combining photocatalytic with electrochemical process, a significantly synergetic effect on ammonia degradation was observed with Na2SO4 as supporting electrolyte at pH 10.7. Furthermore, the photoelectrocatalytic efficiency on the ammonia degradation was greatly enhanced in presence of chloride ions without the limitation ofpH. The degradation rate was improved by 14.8 times reaching 4.98 × 10^-2 min^-1 at pH 10.7 and a faster degradation rate of 6.34 × 10^-2 min^-1 was obtained at pH 3.01. The in situ photoelectrocatalytic generated active chlorine was proposed to be responsible for the improved efficiency. On the other hand, an enhanced degradation of ammonia using TiNT electrode fabricated in fluorinated organic solution was also confirmed compared to TiNT electrode anodized in fluorinated water solution and TiO2 film electrode fabricated by sol-gel method. Finally, the effect of chloride concentration was also discussed. 展开更多
关键词 TiO2 nanotube electrodes Ammonia Photoelectrocatalytic process Enhanced degradation
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Photoelectrochemical Character of TiO_2 Nanocrystalline Electrodes Sensitized by Aluminum Phthalocyanines Modified with Sulfonate Groups 认领 引用
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作者 PAN Kai LIU Zhao-yue +2 位作者 WANG Geng BAI Yu-bai LI Tie-jin 《Chemical Research in Chinese Universities》 SCIE EI CAS 2006年第4期484-487,共4页
Particular kinds of TiO2 nanocrystalline electrodes were sensitized by aluminum phthalocyanines modified with sulfonate groups [ Al（OH） PcSm ]. It was found that in the red region, the electrodes show obvious photoe... Particular kinds of TiO2 nanocrystalline electrodes were sensitized by aluminum phthalocyanines modified with sulfonate groups [ Al（OH） PcSm ]. It was found that in the red region, the electrodes show obvious photoelectrical responses. The surface photovoltage spectra and photocurrent action spectra indicate that in the red region, the monomers of aluminum phthalocyanines have a greater influence on the determination of the photoelectrical response of TiO2 electrodes than the dimers. The dye-sensitized solar cells were obtained by using the aluminum phthalocyaninessensitized TiO2 electrodes and Pt electrodes, which have an open circuit photovoltage of 360 mV, a short circuit photocurrent of 39. 4 μA/cm^2 , a fill factor of 0. 54 and a maximum power output of 7.65 μW/cm^2 under a light intensity of 50 mW/cm^2. 展开更多
关键词 Aluminum phthalocyanines [ Al（OH） PcS, ] TiO2 nanocrystalline electrode Photoelectrochemical character
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Sensitization of Microporous Nanocrystalline TiO_2 Electrode with Quantum Sized RuS2 Particles 认领 引用
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作者 Jing Huai FANG Lian Yong SU +2 位作者 Jing Wen Uny Xiang Yang ZHANG Zuhng LU 《Chinese Chemical Letters》 SCIE CAS 1997年第5期437-438,共2页
The microporous nanocry'sta1line TiO2 electrode with large surface roughness factor hasbeen prepared on a conducting glass support. Modification of the TiO2 electrode by in situ preparingquantum sized RuS2 particl... The microporous nanocry'sta1line TiO2 electrode with large surface roughness factor hasbeen prepared on a conducting glass support. Modification of the TiO2 electrode by in situ preparingquantum sized RuS2 particles on the surface of TiO2 electrode extends the optical absorptionspectrum and photocurrent action specmim into visible region. In addition, compared with RuS2 bulknlaterials- a blue shifi in both absorption spectrum and photocurrent action speCtrum of RuS2rriO2elcctrode is obserived and explained in terms of quantum sized effect. 展开更多
关键词 TiO Sensitization of Microporous Nanocrystalline TiO2 Electrode with Quantum Sized RuS2 Particles
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Influence of Modification of Counter Electrode on PhotoelectricProperties of Dye-sensitized TiO_2 Solar Cells 认领 引用
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作者 HAOSan-cun FANLe-qing WUJi-huai HUANGYun-fang LINJian-ming 《Chemical Research in Chinese Universities》 SCIE EI CAS 2004年第2期205-209,共5页
A dye-sensitized nanocrystalline TiO 2 solar cell(DYSC) was assembled, of which counter electrode was modified already by platinum, nickel and carbon. It was found that the DYSC had better photoelectric performance wh... A dye-sensitized nanocrystalline TiO 2 solar cell(DYSC) was assembled, of which counter electrode was modified already by platinum, nickel and carbon. It was found that the DYSC had better photoelectric performance when the electrode was modified by platinum than by nickel and carbon. The influence of the incidence light wavelength on the incidence monochromatic photoelectric conversion efficiency(IPCE) was investigated. The result shows that the IPCE mainly depends on the short-circuit current density(I SC) of a DYSC, and the IPCE reaches 48.32% under the irradiation with the wavelength of 560 nm when the counter electrode of a DYSC was modified by platinum. The influence of incident light intensity on the photoelectric properties of a DYSC was also investigated. It was found that the I SC and open-circuit voltage(V OC) increased and the fill factor(f f) of the DYSC decreased with the increase of the incident light intensity. 展开更多
关键词 Dye-sensitized nanocrystalline TiO 2 solar cell Counter electrode Modification Incident light wavelength Incident light intensity
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Electrochemical determination of vitamin C in the presence of uric acid by a novel TiO_2 nanoparticles modified carbon paste electrode 认领 引用 被引量：4
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作者 Mohammad Mazloum-Ardakani Mohammad Ali Sheikh-Mohseni +2 位作者 Hadi Beitollahi Ali Benvidi Hossein Naeimi 《Chinese Chemical Letters》 SCIE CAS 2010年第12期1471-1474,共4页
The electrochemical behavior of vitamin C（ascorbic acid or AA） is investigated on the surface of a carbon-paste electrode modified with TiO2 nanoparticles and 2,2＇-（1,2 butanediylbis（nitriloethylidyne））-bis-hyd... The electrochemical behavior of vitamin C（ascorbic acid or AA） is investigated on the surface of a carbon-paste electrode modified with TiO2 nanoparticles and 2,2＇-（1,2 butanediylbis（nitriloethylidyne））-bis-hydroquinone（BBNBH）.The prepared modified electrode showed an efficient catalytic role in the electrochemical oxidation of AA,leading to remarkable decrease in oxidation overpotential and enhancement of the kinetics of the electrode reaction.This modified electrode exhibits well-separated oxidation peaks for AA and uric acid（UA）.The modified electrode is successfully applied for the accurate determination of AA in pharmaceutical preparations. 展开更多
关键词 Ascorbic acid Uric acid TiO2 nanoparticles Electrocatalysis Modified carbon paste electrode
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Pd-MnO_2 nanoparticles/TiO_2 nanotube arrays(NTAs) photo-electrodes photo-catalytic properties and their ability of degrading Rhodamine B under visible light 认领 引用 被引量：1
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作者 Mohamed Thabit Huiling Liu +1 位作者 Jian Zhang Bing Wang 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2017年第10期53-60,共8页
Pd-MnO2/TiO2 nanotube arrays（NTAs） photo-electrodes were successfully fabricated via anodization and electro deposition subsequently; the obtained Pd-MnO2/TiO2 NTAs photo electrodes were analyzed by scanning electro... Pd-MnO2/TiO2 nanotube arrays（NTAs） photo-electrodes were successfully fabricated via anodization and electro deposition subsequently; the obtained Pd-MnO2/TiO2 NTAs photo electrodes were analyzed by scanning electron microscopy（SEM）, X-ray diffraction（XRD） and characterized accordingly. Moreover, the light harvesting and absorption properties were investigated via ultraviolet–visible diffuse reflectance spectrum（DRS）; photo degradation efficiency was investigated via analyzing the photo catalytic degradation of Rhodamine B under visible illumination（xenon light）. The performed analyses illustrated that Pd-MnO2 codoped particles were successfully deposited onto the surface of the TiO2 nanotube arrays;DRS results showed significant improvement in visible light absorption which was between400 and 700 nm. Finally, the photo catalytic degradation efficiency results of the designated organic pollutant（Rhodamine B） illustrated a superior photocatalytic（PC） efficiency of approximately 95% compared to the bare TiO2 NTAs, which only exhibited a photo catalytic degradation efficiency of approximately 61%, thus it indicated the significant enhancement of the light absorption properties of fabricated photo electrodes and their yield of UOH radicals. 展开更多
关键词 Pd-MnO2/TiO2 Nanotubes Photo electrode Photo degradation Rhodamine B Photo-catalytic efficiency
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Electrically enhanced photodegradation of an azodye(Acid Orange II) using a Pt/TiO_2 film electrode irradiating with an UV lamp 认领 引用
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作者 SUJing CHENGuo－hua 《Journal of Environmental Sciences》 SCIE EI CAS 2003年第1期60-64,共5页
A photoelectrochemical process in the degradation of an azodye (Acid Orange II) on a Pt/TiO 2 film electrode was investigated. By using the glass device and the voltage stabilized source of direct current, decolorizat... A photoelectrochemical process in the degradation of an azodye (Acid Orange II) on a Pt/TiO 2 film electrode was investigated. By using the glass device and the voltage stabilized source of direct current, decolorization ratios higher than 78% were observed during a period of 5h. Comparing this value with the sum of the decolorization ratios obtained by a sole application of electrochemical(lower than 3%) and photochemical(about 23%) procedures, a significant synergic effect between both processes was observed. The effects of adscititious voltage and pH value on the decolorization ratios were obvious while the effect of the amount of aeration was minor. 展开更多
关键词 photoelectrochemical process Pt/TiO 2 film electrode synergic effect
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Electrophoretic Deposition of TiO2/Nb2O5 Composite Electrode Thin Films for Photovoltaic Application 认领 引用 被引量：1
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作者 John Njagi Nguu Bernard Odhiambo Aduda Francis Wanjala Nyongesa Robinson Juma Musembi 《Journal of Energy and Power Engineering》 CAS 2014年第4期757-764,共8页
Nano sized powders of TiO2 （titanium dioxide） and Nb2O5 （Niobium （V） oxide） were used to fabricate TiO2/Nb2O5 composites thin films by EPD （electrophoretic deposition） technique. The metal oxide powders, toget... Nano sized powders of TiO2 （titanium dioxide） and Nb2O5 （Niobium （V） oxide） were used to fabricate TiO2/Nb2O5 composites thin films by EPD （electrophoretic deposition） technique. The metal oxide powders, together with magnesium nitrate hexahydrate pellets, were suspended in propan-2-ol inside an EPD cell. The electrodes, placed 1.2 cm apart, were partially immersed in the suspension and a DC potential applied across them. Key EPD process parameters, which include applied DC electric field, deposition time and solid concentration in suspension, were optimized through visual inspection and from UV-Vis-NIR spectrophotometer spectra. The highest （55%） transmittance was obtained for films with deposition time of 90 s, powder concentration of 0.01 g/40 mL, and 35 V DC （direct current） voltage. XRD micrographs confirmed that TiO2 and Nb2O5 particles were presented in the composite film. SEM （scanning electron microscope） micrographs of the composite electrode thin films showed that porous films of high quality with well controlled morphology were deposited by using the EPD technique. 展开更多
关键词 Electrophoretic deposition TiO2/Nb2O5 composite electrode thin films.
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纳米复合材料Ag/TiO_2-ZrO_2的制备及其微波增强光催化降解甲基橙 认领 引用 被引量：26
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作者 李莉 陆丹 +1 位作者 计远 赵月红 《物理化学学报》 SCIE CAS 北大核心 2010年第5期1323-1329,共7页
采用EO20PO70EO20(P123)作模板剂,通过溶胶-凝胶-程序升温溶剂热一步法,并经萃取处理制备了具有光催化活性的纳米复合材料Ag/TiO2-ZrO2.用X射线衍射(XRD)、X射线光电子能谱(XPS)、透射电子显微镜(TEM)、N2吸附-脱附测定和扫描电子显微... 采用EO20PO70EO20(P123)作模板剂,通过溶胶-凝胶-程序升温溶剂热一步法,并经萃取处理制备了具有光催化活性的纳米复合材料Ag/TiO2-ZrO2.用X射线衍射(XRD)、X射线光电子能谱(XPS)、透射电子显微镜(TEM)、N2吸附-脱附测定和扫描电子显微镜配合X射线能量色谱仪(SEM-EDS)等测试手段对其组成、结构及形貌等进行了表征.结果表明,复合材料Ag/TiO2-ZrO2中Ag以单质形式存在,材料具有双孔结构,颗粒分布较均匀,结构也较规整,平均孔径约为3.6和9.0nm.通过微波增强光催化降解染料甲基橙的实验,对复合材料Ag/TiO2-ZrO2的光催化活性进行了探究.实验结果表明,微波辅助光催化效果优于紫外辐射,并且萃取后的合成产物Ag/TiO2-ZrO2在90min内对甲基橙的降解率可达81.5%,其活性高于市售P25以及TiO2-ZrO2. 展开更多
关键词 溶胶-凝胶 Ag/TiO2-ZrO2 光催化 微波 甲基橙
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整体式V_2O_5-WO_3/TiO_2-ZrO_2催化剂用于NH_3选择性催化还原NO_x 认领 引用 被引量：10
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作者 李鹏 张亚平 +4 位作者 肖睿 沈凯 孙克勤 徐海涛 周长城 《中南大学学报（自然科学版）》 EI CAS CSCD 北大核心 2013年第4期1719-1726,共8页
通过共沉淀法制备不同锆掺杂量的钛锆复合载体,用分步浸渍法先后浸渍WO3和V2O5得到一系列V2O5-WO3/TiO2-ZrO2催化剂样品,采用X线衍射(XRD)、比表面积测定(BET)、高分辨率透射电子显微镜(HRTEM),程序升温还原(TPR)等表征技术进行相关的... 通过共沉淀法制备不同锆掺杂量的钛锆复合载体,用分步浸渍法先后浸渍WO3和V2O5得到一系列V2O5-WO3/TiO2-ZrO2催化剂样品,采用X线衍射(XRD)、比表面积测定(BET)、高分辨率透射电子显微镜(HRTEM),程序升温还原(TPR)等表征技术进行相关的表征分析,同时在模拟氨气选择性催化还原NOx(NH3-SCR)的反应条件下对催化剂的脱硝反应活性进行考察。研究结果表明:ZrO2含量为50%(摩尔分数)的催化剂具有较好的热稳定性和较宽的活性窗口。模拟烟气中含有0.08%(体积分数)的SO2时,SO2对所研究催化剂的NO脱除具有一定的促进作用。复合载体Ti0.5Zr0.5O2呈无定形态,具有较大的比表面积和孔容,微粒大小均匀,表面分散性良好;WO3和V2O5高度分散在载体的表面;ZrO2的掺入有利于提高催化剂的还原性能。 展开更多
关键词 V2O5 WO3 TiO2-ZrO2 催化还原 抗SO2
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Ti/nano TiO_2-ZrO_2修饰电极电催化还原马来酸制备丁二酸 认领 引用 被引量：4
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作者 徐迈 王凤武 +3 位作者 魏亦军 朱其永 方文彦 朱传高 《化学学报》 SCIE CAS CSCD 北大核心 2012年第12期1407-1411,共5页
采用溶胶-凝胶法制备高活性Ti基纳米TiO2-ZrO2膜电极.通过X射线衍射分析表明,纳米TiO2-ZrO2粉体呈微-纳二级结构.扫描电子显微镜测试表明,颗粒平均尺寸约为30 nm.通过循环伏安和恒电流电解技术研究发现,TianoTiO2-ZrO2电极对马来酸电催... 采用溶胶-凝胶法制备高活性Ti基纳米TiO2-ZrO2膜电极.通过X射线衍射分析表明,纳米TiO2-ZrO2粉体呈微-纳二级结构.扫描电子显微镜测试表明,颗粒平均尺寸约为30 nm.通过循环伏安和恒电流电解技术研究发现,TianoTiO2-ZrO2电极对马来酸电催化还原制备丁二酸的活性要高于TianoTiO2电极,反应过程受扩散控制.以钛基氧化钌电极为阳极,Tiano TiO2-ZrO2膜电极为阴极进行恒电流电解实验.结果表明,控制电流密度20 mA cm-2,温度60℃,丁二酸的产率达到96%. 展开更多
关键词 Tiano TiO2-ZrO2修饰电极 电合成 电催化 丁二酸
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Regeneration of the deactivated TiO_2-ZrO_2-CeO_2 /ATS catalyst for NH_3-SCR of NO_x in glass furnace 认领 引用 被引量：11
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作者 杨波 沈岳松 +1 位作者 沈树宝 祝社民 《Journal of Rare Earths》 SCIE EI CAS CSCD 2013年第2期130-136,共7页
Larger amounts of alkalis, alkali earth metals and sulfides in flue gas from glass furnace were easier to deactivate selective catalytic reduction （SCR） catalyst compared to the flue gases from other stationary sour... Larger amounts of alkalis, alkali earth metals and sulfides in flue gas from glass furnace were easier to deactivate selective catalytic reduction （SCR） catalyst compared to the flue gases from other stationary sources. Catalyst regeneration has been an emerging research topic for flue gas denitrification in glass furnace. Regeneration of the deactivated TiO2-ZrO2-CeO2 /Al2TiO 5 -TiO2-SiO2 （ATS） complex phase ceramics catalysts used for NH3 -SCR of NO x in glass furnace was studied in this work. Effects of regeneration methods, including washing with different aqueous solutions and sulfuric acid, thermal regeneration, thermal reduction regeneration, and thermal regeneration with SO2 , on catalytic performance were comparatively investigated. In comparison of catalytic activities between the catalysts before and after regeneration, results showed that washing was the most effective regeneration method, and the sulfuric acid concentration of the washing solution was an important factor. Washing time directly affected catalyst regeneration efficiency and catalyst life. The regenerated TiO2-ZrO2 -CeO2 /ATS catalyst regained more than 90% NO conversion after being washed with 10 wt.% H2SO4 for 30 min. 展开更多
关键词 deactivated TiO 2 -ZrO 2 -CeO 2 /ATS regeneration method catalytic performance glass furnace rare earths
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TiO_2-ZrO_2的表征及其异丙醇催化转化性能 认领 引用 被引量：8
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作者 韩承辉 刘炳华 +1 位作者 张惠良 沈俭一 《物理化学学报》 SCIE CAS 北大核心 2006年第8期993-998,共6页
用共沉淀法制备了TiO2-ZrO2复合氧化物.采用N2吸附、XRD、TEM、NH3和CO2吸附量热、NH3吸附红外对TiO2-ZrO2体系的结构及酸碱性等进行了表征.结果表明:与单纯的氧化物相比,形成的复合氧化物为无定形物相,有介孔结构,表面积明显提高,可达2... 用共沉淀法制备了TiO2-ZrO2复合氧化物.采用N2吸附、XRD、TEM、NH3和CO2吸附量热、NH3吸附红外对TiO2-ZrO2体系的结构及酸碱性等进行了表征.结果表明:与单纯的氧化物相比,形成的复合氧化物为无定形物相,有介孔结构,表面积明显提高,可达218m2·g-1;初始吸附热差别不大,但具有更多的表面B酸位;随着TiO2掺入量的增大,复合氧化物表面碱位减少.异丙醇催化转化,在无氧条件下,ZrO2、TiO2和TiO2-ZrO2复合氧化物上丙烯的选择性大于90%,说明这些氧化物具有强的表面酸性;在有氧条件下,ZrO2和TiO2丙酮的选择性达到70%～85%,主要体现为氧化还原性;而在复合氧化物上丙烯选择性增大到70%左右,丙酮的选择性下降为30%左右,表明生成的复合氧化物表面上的氧化还原性削弱,酸性增强. 展开更多
关键词 TiO2-ZrO2 异丙醇催化 表面酸碱性 氧化还原性
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B_2O_3/TiO_2-ZrO_2催化剂上环己酮肟的气相Beckmann重排反应 认领 引用 被引量：6
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作者 毛东森 卢冠忠 +2 位作者 陈庆龄 谢在库 张玉贤 《石油学报（石油加工）》 EI CAS 北大核心 2002年第1期31-36,共6页
用共沉淀法制备了TiO2 ZrO2 复合氧化物载体。BET、DTA、XRD表征结果表明 ,该复合载体具有较大的比表面积和较好的热稳定性。对于环己酮肟气相Beckmann重排反应制己内酰胺 ,用复合载体制备的B2 O3 /TiO2 ZrO2 催化剂 ,比分别以TiO2 、Zr... 用共沉淀法制备了TiO2 ZrO2 复合氧化物载体。BET、DTA、XRD表征结果表明 ,该复合载体具有较大的比表面积和较好的热稳定性。对于环己酮肟气相Beckmann重排反应制己内酰胺 ,用复合载体制备的B2 O3 /TiO2 ZrO2 催化剂 ,比分别以TiO2 、ZrO2 为载体所制备的B2 O3 /TiO2 和B2 O3 /ZrO2 催化剂具有更高的活性和选择性。实验结果表明 ,催化剂表面中等强度的酸位是环己酮肟气相Beckmann重排反应的有效活性中心。 展开更多
关键词 环己酮肟 气相Beckmann重排反应 己内酰胺 TiO2-ZrO2 B2O3 催化剂
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MnOx/TiO2-ZrO2催化剂的制备及低温催化还原NO的研究 认领 引用 被引量：5
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作者 张延东 李慧远 +3 位作者 祝社民 张利民 王志良 沈树宝 《环境科学学报》 CAS 北大核心 2009年第2期339-343,共5页
采用共沉淀法制备了TiO2-ZrO2复合氧化物,以其为载体采用等体积浸渍法制备了不同负载量的MnOx/TiO2-ZrO2催化剂.低温下以NH3为还原剂考察了催化剂选择性催化还原(SCR)NO的活性.借助N2吸附、XRD、热重-差示扫描量热法(TG-DSC)对催化剂进... 采用共沉淀法制备了TiO2-ZrO2复合氧化物,以其为载体采用等体积浸渍法制备了不同负载量的MnOx/TiO2-ZrO2催化剂.低温下以NH3为还原剂考察了催化剂选择性催化还原(SCR)NO的活性.借助N2吸附、XRD、热重-差示扫描量热法(TG-DSC)对催化剂进行微观表征和分析.结果表明,负载量为5%时,生成的MnO2高度分散,NO的转化率较高;负载量为10%和15%时,出现MnO2晶相,NO的转化率有所下降.120～240℃、体积空速为10000h-1的条件下,3种负载量的催化剂上NO转化率均大于90%. 展开更多
关键词 TiO2-ZrO2复合氧化物 低温选择性催化还原 NO MnO2
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WO_3/TiO_2-ZrO_2催化剂的高温脱硝性能 认领 引用 被引量：4
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作者 陆强 王磊 +4 位作者 蔺卓玮 马帅 李文艳 杨少霞 董长青 《动力工程学报》 CAS CSCD 北大核心 2016年第11期901-906,共6页
以复合氧化物TiO_2-ZrO_2为载体、WO_3为活性组分,制备了适用于高温烟气(500℃以上)脱硝的WO_3/TiO_2-ZrO_2型SCR脱硝催化剂,对催化剂进行了XRD表征,并考察了复合载体的组成、WO_3质量分数和高温焙烧处理对催化剂脱硝性能的影响.结果表... 以复合氧化物TiO_2-ZrO_2为载体、WO_3为活性组分,制备了适用于高温烟气(500℃以上)脱硝的WO_3/TiO_2-ZrO_2型SCR脱硝催化剂,对催化剂进行了XRD表征,并考察了复合载体的组成、WO_3质量分数和高温焙烧处理对催化剂脱硝性能的影响.结果表明:WO_3/TiO_2-ZrO_2催化剂具有很好的热稳定性,经800℃高温处理后晶相结构保持不变且脱硝效率仅有微弱下降;WO_3质量分数为20%、钛锆比为7∶3和0∶10的2种催化剂具有较好的脱硝性能,能够适用于高温脱硝反应. 展开更多
关键词 高温SCR脱硝 催化剂 WO3 TiO2-ZrO2
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固体酸催化剂S_2O_82-/TiO_2-ZrO_2合成马来酸二辛酯 认领 引用 被引量：20
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作者 华平 沙兆林 李建华 《应用化学》 CAS 北大核心 2002年第8期807-809,共3页
The preparation of peroxodisulfated zirconia titania(PSZT) solid super acid has been investigated as function of molar ratio of Ti to Zr, impregnation time, calcination time and temperature in esterification of maleic... The preparation of peroxodisulfated zirconia titania(PSZT) solid super acid has been investigated as function of molar ratio of Ti to Zr, impregnation time, calcination time and temperature in esterification of maleic anhydride with n octanol. The highest yield of dioctyl maleate was 98 2% at the optimum reaction conditions. 展开更多
关键词 S2O8^2-/TiO2-ZrO2 固体酸催化剂 马来酸二辛酯 合成 二氧化钛 二氧化锆 马来酸酐 正辛醇 酯化反应
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TiO_2-ZrO_2复合薄膜的制备和摩擦学性能 认领 引用 被引量：13
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作者 陈云霞 周金芳 刘维民 《材料研究学报》 EI CAS 北大核心 2002年第3期279-284,共6页
以ZrOCl2@8H2O和TiCl4为原料,用溶胶-凝胶法制备了高取向的TiO2-ZrO2复合薄膜,研究了复合薄膜的组成结构、表面形貌和摩擦学性能结果表明,该复合薄膜均匀致密、具有四方ZrO2结构;复合薄膜具有良好的减摩抗磨性能.在0.5 N低负荷下,复合... 以ZrOCl2@8H2O和TiCl4为原料,用溶胶-凝胶法制备了高取向的TiO2-ZrO2复合薄膜,研究了复合薄膜的组成结构、表面形貌和摩擦学性能结果表明,该复合薄膜均匀致密、具有四方ZrO2结构;复合薄膜具有良好的减摩抗磨性能.在0.5 N低负荷下,复合薄膜与AISI 52100钢和Si3N4对磨时的摩擦系数为0.14～0.20,耐磨寿命大于5000次.TiO2-ZrO2复合薄膜可用作特殊工况条件下的减摩抗磨保护性涂层. 展开更多
关键词 制备 TiO2-ZrO2复合薄膜 溶胶-凝胶法 摩擦学 性能 陶瓷薄膜 二氧化钛 二氧化锆
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堇青石蜂窝陶瓷负载CuO/CeO_2-ZrO_2/TiO_2催化氧化含酚废水的性能研究 认领 引用 被引量：10
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作者 郭松林 肖素萍 徐小勇 《陶瓷学报》 CAS 北大核心 2011年第4期529-533,共5页
选取球状堇青石蜂窝陶瓷作为催化剂基体,制备了堇青石蜂窝陶瓷负载CuO/CeO2-ZrO2/TiO2催化剂,采用XRD、BET等方法对其进行了结构表征,测定了其催化湿式氧化含酚废水的活性及抗压强度、脱落率、Cu2+溶出浓度等性能指标。结果表明,CuO/CeO... 选取球状堇青石蜂窝陶瓷作为催化剂基体,制备了堇青石蜂窝陶瓷负载CuO/CeO2-ZrO2/TiO2催化剂,采用XRD、BET等方法对其进行了结构表征,测定了其催化湿式氧化含酚废水的活性及抗压强度、脱落率、Cu2+溶出浓度等性能指标。结果表明,CuO/CeO2-ZrO2/TiO2堇青石蜂窝陶瓷催化剂在反应温度180℃、压力5Mpa、搅拌速率为600r/min时,催化湿式氧化反应200minCOD去除率可达92.7%;球状堇青石蜂窝陶瓷CuO/CeO2-ZrO2/TiO2催化剂具有强度高、易装填、易更换、脱落率低特点,Cu2+溶出浓度低于环保排放标准,适合工业化处理含酚废水。 展开更多
关键词 湿式氧化 催化湿式氧化 含酚废水 蜂窝陶瓷 CuO/CeO2-ZrO2/TiO2催化剂
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