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Influence of soaking time on semi-conductivity and nonlinear electrical properties of TiO_2-based varistor ceramics 认领 引用 被引量：4
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作者 孟凡明 《Journal of Chongqing University》 2008年第4期297-301,共5页
We investigated the influence of soaking time on the semi-conductivity and nonlinear electrical properties of TiO2- based varistor ceramic samples. We used a single sintering process and fabricated six disk samples of... We investigated the influence of soaking time on the semi-conductivity and nonlinear electrical properties of TiO2- based varistor ceramic samples. We used a single sintering process and fabricated six disk samples of （Sr, Bi, Si, Ta）-doped TiO2- based varistor ceramics sintered at 1 250℃ for 0.5 h, 1.0 h, 2.0 h, 3.0 h, 4.0 h, and 5.0 h, respectively. The samples were characterized by X-ray diffraction, breakdown voltage, and complex impedance. The results show that as the soaking time increases from 0.5 h to 5.0 h, the breakdown voltage drops before rising while the nonlinear coefficient increases and then decreases. We suggest that, considering both grain semi-conductivity and nonlinear electrical properties of the TiO2-based varistor ceramics, the optimal soaking time is between 2.0 h and 3.0 h. 展开更多
关键词 TiO2-based varistor ceramics nonlinear electrical properties semi-conductivity soaking time
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STUDY ON THE INFRARED TRANSMITTING As_2Te_3-BASED CHALCOHALIDE GLASSES 认领 引用
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作者 李新菊 赵宏声 +2 位作者 陈文梅 尹宏兵 赵修建 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 1995年第2期64-69,共6页
This paper reports the formation and some properties of a new class of chalcohalide glasses in the As2Tef iodide systems. The As2Te3-Pb12, As2Te3-HgI2, As2Te3-CitI and As2Te3-AgI systems can form stable bulk glasses i... This paper reports the formation and some properties of a new class of chalcohalide glasses in the As2Tef iodide systems. The As2Te3-Pb12, As2Te3-HgI2, As2Te3-CitI and As2Te3-AgI systems can form stable bulk glasses in wide composition regions ?and no bulk glass formation was found in the As2Te3-TH sys-tem. As2Te3-based glasses have glass transition tempera- 展开更多
关键词 As2Te3-based glasses Chalcohalide Iodides. Glass formation and Glass properties.
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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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Highly efficient Zr doped-TiO_2/glass fiber photocatalyst and its performance in formaldehyde removal under visible light 认领 引用 被引量：7
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作者 Chao Huang Yaping Ding +3 位作者 Yingwen Chen Peiwen Li Shemin Zhu Shubao Shen 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2017年第10期61-69,共9页
Zr-doped-TiO2 loaded glass fiber（ZT/GF） composite photocatalysts with different Zr/Ti ratios were prepared with a sol–gel process. Zr4＋can replace Ti4＋in the TiO2 lattice, which is conducive to forming the anatas... Zr-doped-TiO2 loaded glass fiber（ZT/GF） composite photocatalysts with different Zr/Ti ratios were prepared with a sol–gel process. Zr4＋can replace Ti4＋in the TiO2 lattice, which is conducive to forming the anatase phase and reducing the calcination temperature. The glass fiber carrier was responsible for better dispersion and loading of Zr-doped-TiO2 particles, improving the applicability of the Zr-doped-TiO2. The ZT/GF photocatalysts were characterized by X-ray diffraction（XRD）, scanning electron microscope（SEM）, Fourier transform infrared spectroscopy（FT-IR）, ultraviolet–visible spectroscopy（UV–vis） and Barrett–Joyner–Halenda（BJH）. The performance of photocatalysts with different loading was evaluated in formaldehyde degradation under visible light at room temperature. ZT/GF0.2exhibited the highest activity, with a formaldehyde removal rate as high as 95.14% being observed, which is better than that of the photocatalyst particles alone. The stability of the catalyst was also tested, and ZT/GF exhibited excellent catalytic performance with 94.38%removal efficiency, even after seven uses. 展开更多
关键词 TiO2 Zr Photocatalyst Formaldehyde Glass fiber
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锐钛矿结构TiO_2/glass膜光催化作用的研究.紫外灯照射下水中苯酚的光催化降解 认领 引用 被引量：3
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作者 吴月顺 张延昌 +3 位作者 许青 王娅娟 郑清华 买光昕 《化学世界》 CAS 北大核心 2002年第6期289-289.,共1页
以溶胶 -凝胶法制得锐钛矿型结构的 Ti O2 /glass膜。在紫外灯照射下研究了膜对水中苯酚的光催化降解作用 ,研究证明 ,灯距控温反应器 1 0 cm时的液外照射 ,可使苯酚降解率达 70 %以上 ;在 H2 O2 存在下效果更佳 ;
关键词 锐肽矿结构 光催化降解 溶胶-凝胶法 TiO2/glass膜 苯酚 紫外光 污水处理
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Fabrication of nanoporous TiO_2 films with novel surface morphology on conducting glass(FTO) substrate 认领 引用 被引量：1
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作者 周艺 黄燕 +4 位作者 李荡 何文红 郭长春 吕彩霞 张世英 《Journal of Central South University》 SCIE EI CAS 2012年第10期2740-2745,共6页
The crystalline structure and surface morphology of TiO2 semiconductor coating play an important role in the conversion efficiency of dye-sensitized solar cells. In order to obtain TiO2 coating with controllable morph... The crystalline structure and surface morphology of TiO2 semiconductor coating play an important role in the conversion efficiency of dye-sensitized solar cells. In order to obtain TiO2 coating with controllable morphology and high porosity, nanoporous TiO2 films were fabricated on conducting glass （FTO） substrates, Ti thin films （1.5-2 gin） were deposited on conducting glass （FTO） substrates via the DC sputtering method, and then electrochemically anodized in NH4F/ethylene glycol solution. The crystalline structure and surface morphology of the samples were characterized by X-ray diffraction （XRD） and field emission scanning electron microscopy （FESEM）, respectively. The influences of anodizing potential, electrolyte composition, and pH value on the surface morphology of nanoporous TiO2 films were extensively studied. The growth mechanism of nanoporous TiO2 films was discussed by current density variations with anodizing time. The results demonstrate that nanoporous TiO2 films with high porosity and three-dimensional （3D） networks are observed at 30 V, when the NH4F concentration in ethylene glycol solution is 0.3% （mass fraction） and the electrolyte pH value is 5.0. 展开更多
关键词 nanoporous TiO2 films anodizing potential electrolyte composition pH conducting glass growth mechanism
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TiO_2-SO_42-/Glass光催化降解甲基橙溶液的方法 认领 引用 被引量：2
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作者 赵谦 姜廷顺 《环境科学与技术》 CAS 2003年第4期56-58,共3页
研究以平玻璃和毛玻璃为载体,用Sol gel法制备附载型TiO2/Glass光催化剂,并用H2SO4溶液浸泡制得TiO2 SO2-4/Glass光催化剂。考察了光催化剂对甲基橙溶液的光催化性能。结果表明:平玻璃附载TiO2的光催化活性低于毛玻璃附载TiO2的光催化... 研究以平玻璃和毛玻璃为载体,用Sol gel法制备附载型TiO2/Glass光催化剂,并用H2SO4溶液浸泡制得TiO2 SO2-4/Glass光催化剂。考察了光催化剂对甲基橙溶液的光催化性能。结果表明:平玻璃附载TiO2的光催化活性低于毛玻璃附载TiO2的光催化活性。且毛玻璃附载TiO2经连续6次使用后光催化活性基本不变。毛玻璃附载TiO2经H2SO4溶液处理后光催化活性明显升高。 展开更多
关键词 TiO2-SO4^2-/Glass 光催化氧化 甲基橙
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Effects of Substrate Temperatures on the Structure and UV-shielding Properties of TiO_2-CeO_2 Films Deposited on Glass by Radio-frequency Magnetron Sputtering 认领 引用 被引量：1
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作者 赵青南 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2005年第4期7-9,共3页
TiO2-CeO2 films were deposited on soda-lime glass substrates at varied substrate temperatures by rf magnetron sputtering using 40% molar TiO2-60% molar CeO2 ceramic target in Ar：O2=95：5 atmosphere.The structure,surf... TiO2-CeO2 films were deposited on soda-lime glass substrates at varied substrate temperatures by rf magnetron sputtering using 40% molar TiO2-60% molar CeO2 ceramic target in Ar：O2=95：5 atmosphere.The structure,surface composition,UV-visible spectra of the films were measured by scanning electron microscopy and X-ray diffraction,and X-ray photoelectron spectroscopy,respectively.The experimental results show that the films are amorphous,there are only Ti^4＋ and Ce^4＋ on the surface of the films,the obtained TiO2-CeO2 films shou a good uniformity and high densification,and the films deposited on the glass can shield ultraviolet light without significant absorpition of visible light,the films deposited on substrates at room temperature and 220℃ absorb UV effectively. 展开更多
关键词 rf sputtering TiO2-CeO2 films ultraviolet-shielding coating glass substrate temperatures
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IR Spectra Analysis of SiO_2-TiO_2-GeO_2 Gel Glass of CO_2 Laser Transmitting Hollow Waveguide 认领 引用
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作者 敬承斌 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2002年第4期54-57,共4页
Both titanium and germanium were introduced into silicon dioxide system by sol-gel method to move its region of anomalous dispersion caused by IR resonance absorption towards the wavelength of CO 2 laser.It is indicat... Both titanium and germanium were introduced into silicon dioxide system by sol-gel method to move its region of anomalous dispersion caused by IR resonance absorption towards the wavelength of CO 2 laser.It is indicated by IR absorption spectra that as the content of SiO 2 decreases in this glass system TiO 2 and GeO 2 tends to exist in their own phases.As for the gel glass with a composition of 40SiO 2·30TiO 2·30GeO 2,when the temperature is below 600℃,germanium atoms exist mainly in Ge-O-Ge bonds.With the temperature increasing from 800℃ to 1000℃, titanium atoms in Si-O-Ti bonds almost transform into Ti-O-Ti bonds.Furthermore,a large number of Si-O-Ti and Si-O-Ge bonds formed when the temperature approaches 800℃,which makes a notable IR absorption band round the wavelength of CO 2 laser.Therefore, sol-gel based SiO 2-TiO 2-GeO 2 gel glass is a candidate material for CO 2 laser hollow waveguide. 展开更多
关键词 hollow waveguide SiO 2-TiO 2-GeO 2 gel glass IR spectra CO 2 laser
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Synthesis and Photocatalytic Activity of Fe-doped TiO_2 Supported on Hollow Glass Microbeads 认领 引用 被引量：2
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作者 Wenyan Zhao Wuyou Fu +7 位作者 Haibin Yang Chuanjin Tian Minghui Li Juan Ding Wei Zhang Xiaoming Zhou Hui Zhao Yixing Li 《Nano-Micro Letters》 SCIE EI CAS 2011年第1期20-24,共5页
In this paper, Fe-doped TiO_2 photocatalyst supported on hollow glass microbeads(Fe-TiO_2 /beads)is prepared by dip-coating method, which uses hollow glass microbeads as the carriers and tetrabutylorthotitanate [Ti(OC... In this paper, Fe-doped TiO_2 photocatalyst supported on hollow glass microbeads(Fe-TiO_2 /beads)is prepared by dip-coating method, which uses hollow glass microbeads as the carriers and tetrabutylorthotitanate [Ti(OC_4H_9)_4] as the raw material. The phase structure, ingredient, morphologies, particle size and shell thickness of the products are characterized by X-ray powder diffraction(XRD), energy-dispersive spectroscopy(EDS) and field emission scanning electron microscope(FESEM). The feasibility of photocatylic degradation of Rhodamine B(Rh B) under illumination of UV-vis light is studied. The results show that the core-shell structure catalyst is composed of Fe-doped anatase TiO_2 and hollow glass microbeads, and the catalytic activity of the TiO_2 is markedly enhanced by Fe ion doping. The optimum concentration of Fe ion is 0.1%(molecular fraction) in the precursor and the photocatalytic activity can be increased to 98% compared with that of the undoped one. The presence of ferrum elements neither influences the transformation of anatase to rutile, nor creates new crystal phases. The possible mechanism of photocatalytic oxidation is also discussed. 展开更多
关键词 TiO2 Sol-gel method Semiconductor Photocatalytic activity Hollow glass microbeads
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Preparation and Properties of TiO2-Coated Hollow Glass Microspheres as Thermal Insulation Materials for Energy-Saving Buildings 认领 引用 被引量：1
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作者 Chunyu Wu Weilin Wang Huiming Ji 《Transactions of Tianjin University》 EI CAS 2020年第4期283-291,共9页
A hollow glass microsphere(HGM)/TiO2 composite hollow sphere was successfully prepared via a simple precipitation method.The TiO2 coating layers grew on the surface of the HGMs that range from 20 to 50μm in diameter ... A hollow glass microsphere(HGM)/TiO2 composite hollow sphere was successfully prepared via a simple precipitation method.The TiO2 coating layers grew on the surface of the HGMs that range from 20 to 50μm in diameter as nanoparticles with the formation of the SiO Ti bonds.The growth mechanism accounting for the formation of the TiO2 nanolayers was proposed.The morphology,composition,thermal insulation properties,and visible-near infrared(VIS-NIR)refl ectance of the HGMs/TiO2 composite hollow spheres were characterized.The VIS-NIR reflectance of the HGMs/TiO2 composite hollow spheres increased by more than 30%compared to raw HGMs.The thermal conductivity of the particles is 0.058 W/(m K).The result indicates that the VIS-NIR reflectance of the composite hollow spheres is strongly influenced by the coating of TiO2.The composite hollow spheres were used as the main functional filler to prepare the organic-inorganic composite coatings.The glass substrates coated by the organic-inorganic coatings had lower thermal conductivity and higher near infrared reflectivity.Therefore,the HGMs/TiO2 composite hollow spheres can reflect most of the solar energy and effectively keep out the heat as a thermal insulation coating for energy-saving constructions. 展开更多
关键词 TiO2 Hollow glass microspheres Thermal insulation materials Near infrared reflectance
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锐钛矿结构TiO_2/glass膜光催化作用的研究(Ⅲ)——高压汞灯照射下茜素红的催化降解动力学研究 认领 引用
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作者 燕平 张延昌 +2 位作者 梁玮 李玉青 艾克热木江.伊斯拉穆 《山东教育学院学报》 2003年第3期100-102,共3页
以溶胶—凝胶法制得锐钛矿型结构的TiO2 glass膜 ,用于以 2 5 0W高压汞灯作为光源的不同初始浓度的茜素红水溶液的光催化降解实验。结果表明 ,染料茜素红的光催化降解过程符合零级反应动力学模型。
关键词 TiO2/glass膜 茜素红 光催化降解 动力学
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锐钛矿结构TiO_2/glass膜光催化作用的研究Ⅱ——氘灯照射下亚甲基兰光催化分解 认领 引用 被引量：2
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作者 陶秀峻 许 青 张瑞华 《泰安师专学报》 2001年第6期61-64,共4页
采用Sol-gel法制备了TiO2/glass薄膜,以氘灯作为光源,对微酸性溶液中的亚甲基兰进行光催化降解的实验研究.对溶液酸度、光源照射距离、照射时间等几个方面作用了初步探索.由光催化性能测试结果可知:TiO2薄膜能对亚甲基兰进行有效的光催... 采用Sol-gel法制备了TiO2/glass薄膜,以氘灯作为光源,对微酸性溶液中的亚甲基兰进行光催化降解的实验研究.对溶液酸度、光源照射距离、照射时间等几个方面作用了初步探索.由光催化性能测试结果可知:TiO2薄膜能对亚甲基兰进行有效的光催化降解. 展开更多
关键词 锐钛矿结构 TiO2/glass膜 氘灯 亚甲基兰 光催化分解
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Influence of refining process and utilization of different slags on inclusions, titanium yield and total oxygen content of Ti-stabilized 321 stainless steel 认领 引用 被引量：5
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作者 Xing-run Chen Guo-guang Cheng +2 位作者 Yu-yang Hou Jing-yu Li Ji-xiang Pan 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2020年第8期913-921,共9页
Ti-stabilized 321 stainless steel was prepared using an electric arc furnace, argon oxygen decarburization (AOD) furnace, ladle furnace (LF), and continuous casting processes. In addition, the effect of refining proce... Ti-stabilized 321 stainless steel was prepared using an electric arc furnace, argon oxygen decarburization (AOD) furnace, ladle furnace (LF), and continuous casting processes. In addition, the effect of refining process and utilization of different slags on the evolution of inclusions, titanium yield, and oxygen content was systematically investigated by experimental and thermodynamic analysis. The results reveal that the total oxygen content (TO) and inclusion density decreased during the refining process. The spherical CaO–SiO2–Al2O3–MgO inclusions existed in the 321 stainless steel after the AOD process. Moreover, prior to the Ti addition, the spherical CaO–Al2O3–MgO–SiO2 inclusions were observed during LF refining pro-cess. However, Ti addition resulted in multilayer CaO–Al2O3–MgO–TiOx inclusions. Two different samples were prepared by conventional CaO–Al2O3-based slag (Heat-1) and -TiO2-rich CaO–Al2O3-based slag (Heat-2). The statistical analysis revealed that the density of inclusions and the -TiOx content in CaO–Al2O3–MgO–TiOx inclusions found in Heat-2 sample are much lower than those in the Heat-1 sample. Furthermore, the TO content and Ti yield during the LF refining process were controlled by using -TiO2-rich calcium aluminate synthetic slag. These results were consistent with the ion–molecule coexist-ence theory and FactSage?7.2 software calculations. When -TiO2-rich CaO–Al2O3-based slag was used, the -TiO2 activity of the slag increased, and the equilibrium oxygen content significantly decreased from the AOD to LF processes. Therefore, the higher -TiO2 activity of slag and lower equilibrium oxygen content suppressed the undesirable reactions between Ti and O. 展开更多
关键词 321 Austenitic stainless steel Oxygen content Inclusion TiO2-rich CaO–Al2O3-based slag Ladle furnace(LF)refining process Ion–molecule coexistence theory
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邻-氯酚在TiO_2膜上光催化降解及反应动力学特征 认领 引用 被引量：3
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作者 李景印 郭玉凤 +2 位作者 张亚通 段惠敏 李淑芳 《环境科学与技术》 CAS 2003年第1期3-4,18,共2页
以钛酸四丁酯为原料采用Sol Gel法制备了玻璃负载TiO2 膜光催化剂 ,应用XRD表征了不同实验条件下薄膜中TiO2 的晶相结构和粒度。分析了不同层数TiO2 膜的光催化活性和溶液 pH值对邻 氯酚 (2 CP)的影响。结果表明 :处理温度为 50 0℃时... 以钛酸四丁酯为原料采用Sol Gel法制备了玻璃负载TiO2 膜光催化剂 ,应用XRD表征了不同实验条件下薄膜中TiO2 的晶相结构和粒度。分析了不同层数TiO2 膜的光催化活性和溶液 pH值对邻 氯酚 (2 CP)的影响。结果表明 :处理温度为 50 0℃时不同厚度薄膜中TiO2 均为锐钛矿晶型 ,粒径 8～ 33nm ,5层涂膜光催化活性最高。在高 pH值和低pH值区域 2 CP ,在TiO2 膜上的光催化降解速率较大。 2 CP初始浓度 (C0 )与反应速率 (r0 )的关系符合Langmuir Hinshelwood方程 ,当C0 ≤ 0 .6mmol·L- 1 时 ,降解反应可用一级动力学模式来描述。 展开更多
关键词 玻璃负载TiO2膜 光催化降解 2-氯酚 反应动力学
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Structural Characteristics and Photocatalytic Activity of Ambient Pressure Dried SiO2/TiO2 Aerogel Composites by One-step Solvent Exchange/Surface Modification 认领 引用 被引量：3
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作者 徐海珣 朱平华 +2 位作者 WANG Lijiu JIANG Zuqiang 赵善宇 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2016年第1期80-86,共7页
An ambient pressure synthesis of SiO2/TiO2 binary aerogel was prepared through the low-cost precursors of titanium tetrachloride（TiCl4） and sodium silicate（Na2O·nSiO2）.After gelation,solvent exchange and surf... An ambient pressure synthesis of SiO2/TiO2 binary aerogel was prepared through the low-cost precursors of titanium tetrachloride（TiCl4） and sodium silicate（Na2O·nSiO2）.After gelation,solvent exchange and surface modification were performed simultaneously and the modified gel was finally dried under ambient pressure.Microstructural analyses by transmission electron microscope（TEM） indicate that fabricated SiO2/TiO2 aerogel composite shows similar sponge-like nanostructure as silica aerogel,and the Brunauer-EmmettTeller（BET） analysis shows that the specific surface area of the composite reaches 605 m^2/g,and the average pore size is 9.7 nm.Such binary aerogel exhibits significant photocatalytic performance in this paper for treating model pollutant of methyl orange（MO）,and the decolorizing efficiency of MO is detected as 84.9%after 210 mins exposure to UV light irradiation.Degraded gel suspends in the water so as to separate from solution for reuse,and after 4 times recycling,70%degradation efficiency can be easily reached when composite catalyzed system is exposed for 210 mins under UV irradiation. 展开更多
关键词 photocatalytic activity water glass SiO2/TiO2 binary aerogel ambient drying
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铁离子掺杂TiO_2基自洁净玻璃的制备及性能 认领 引用 被引量：1
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作者 卢安贤 谭常优 《湖南大学学报（自然科学版）》 EI CAS 北大核心 2003年第2期25-27,50,共3页
用溶胶 -凝胶法制备了表面镀有 Fe- Ti O2 光催化薄膜的自洁净玻璃 ,并利用DTA- TG,XRD,SEM等手段研究了 Fe- Ti O2 光催化薄膜的结构与特征 .利用紫外 -可见光分光光度计测量了不同镀膜层数的玻璃的透光率 .通过光催化降解有机磷农药... 用溶胶 -凝胶法制备了表面镀有 Fe- Ti O2 光催化薄膜的自洁净玻璃 ,并利用DTA- TG,XRD,SEM等手段研究了 Fe- Ti O2 光催化薄膜的结构与特征 .利用紫外 -可见光分光光度计测量了不同镀膜层数的玻璃的透光率 .通过光催化降解有机磷农药敌敌畏的水溶液 ,研究了不同铁含量以及不同镀膜层数对自洁净玻璃光催化活性的影响 .研究结果表明 :光催化薄膜主要由粒径为几十纳米的 Fe3 O4和 Ti O2 颗粒构成 ;铁离子掺杂可以提高自洁净玻璃的光催化活性 ,在同样镀膜层数 ( 2层 )的情况下 ,[Fe]/[Ti O2 ](摩尔比 ) =0 .0 0 5时的光催化性能最好 ;当用同样浓度的铁离子掺杂时 ,镀膜层数为 展开更多
关键词 铁离于 掺杂 TiO2 自洁净玻璃 光催化 降解
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含TiO2多元系玻璃与玻璃陶瓷及其光电子应用研究进展 认领 引用 被引量：1
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作者 刘孝芬 肖永川 +4 位作者 孙力军 陈阳 娄阳 戴能利 李进延 《中国材料进展》 CAS CSCD 北大核心 2020年第6期464-471,共8页
玻璃和玻璃陶瓷作为一种重要的光功能材料,在显示、照明、闪烁体、激光器和光纤放大器等领域有着重要的应用。二氧化钛(TiO 2)具有高折射率和高介电系数,研究表明,添加TiO 2能够降低玻璃的声子能量、改善稀土离子的发光性能;同时,含TiO ... 玻璃和玻璃陶瓷作为一种重要的光功能材料,在显示、照明、闪烁体、激光器和光纤放大器等领域有着重要的应用。二氧化钛(TiO 2)具有高折射率和高介电系数,研究表明,添加TiO 2能够降低玻璃的声子能量、改善稀土离子的发光性能;同时,含TiO 2玻璃陶瓷不仅能够促进稀土离子的发光,而且还能作为一种闪烁体应用于辐射探测领域。概括了含TiO 2玻璃的制备方法,包括高温熔融-淬火法、溶胶-凝胶法以及无容器悬浮技术,其中无容器悬浮技术为高TiO 2含量玻璃的制备提供了新的途径。简要介绍了含TiO 2玻璃和玻璃陶瓷的结构和性能,包括TiO 2的配位、玻璃的声子能量和热学性能等。调研了近几年含TiO 2玻璃和玻璃陶瓷在辐射发光和闪烁发光方面的研究进展。最后,探讨了含TiO 2玻璃和玻璃陶瓷存在的问题和未来的发展趋势,并总结得出了含TiO 2多元系玻璃和玻璃陶瓷有望成为光电子应用新材料的研究热点。 展开更多
关键词 TiO 2 玻璃和玻璃陶瓷 制备方法 结构与性能 光电子应用
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TiO_2-SiO_2凝胶玻璃涂层的耐水性 认领 引用 被引量：2
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作者 刘剑亚 《安庆师范学院学报（自然科学版）》 2002年第3期28-31,共4页
Ti O2 -Si O2 系列玻璃具有优良的化学稳定性 ,采用溶胶 -凝胶法制备玻璃涂层 ,可望提高一般玻璃的耐水性。研究结果表明 ,凝胶的化学组成及合成工艺均影响聚合物的类型 ,所以影响到涂层质量和基材的耐水性。当凝胶的化学组成为 5 Ti O2... Ti O2 -Si O2 系列玻璃具有优良的化学稳定性 ,采用溶胶 -凝胶法制备玻璃涂层 ,可望提高一般玻璃的耐水性。研究结果表明 ,凝胶的化学组成及合成工艺均影响聚合物的类型 ,所以影响到涂层质量和基材的耐水性。当凝胶的化学组成为 5 Ti O2 -95 Si O2 ,溶剂量 R =0 .8—1.2 ,加水量γ =0 .75 -0 .98合成 ,涂层经 5 0 0℃热处理 ,可使一般 Na2 O -Ca O -Si O2 玻璃的耐水性提高 2 5 % -4 7%。 展开更多
关键词 TiO2-SiO2玻璃 涂层 耐水性 溶胶-凝胶法
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Fabrication of Dye Sensitized Solar Cell Based on Titanium Dioxide (TiO2) 认领 引用
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作者 Ari A. Mohammed Alan S. Said Ahmad Wafaa A. Azeez 《Advances in Materials Physics and Chemistry》 CAS 2015年第9期361-367,共7页
The Dye Sensitized Solar Cell (DSSC) plays an important role because of low material cost, ease of production and high conversion efficiency as compared to other thin-film solar cell technologies. The main objective i... The Dye Sensitized Solar Cell (DSSC) plays an important role because of low material cost, ease of production and high conversion efficiency as compared to other thin-film solar cell technologies. The main objective is to create and find the best configuration of the solar cell based on materials that are inexpensive and highly efficient in solar energy conversion and subsequently test the efficiency of dye sensitized titanium dioxide solar cell. We begin the process with two glass plates coated with Fluorine tin oxide (FTO). Titanium dioxide is applied to the conductive side of one plate and the other plate is coated with graphite. A dye is adsorbed on to the TiO2 layer and then the plates are sandwiched together. A drop of iodide electrolyte is then added between the plates. The tests carried out indoors under a lamp emitting all wavelengths in the visible spectrum were not found to provide consistent data due to substantial heating of the cell. The outdoor tests carried out in natural sunlight exhibited steady voltage at much higher level. Future research will involve the incorporation of quantum dots instead of the organic dye as a sensitizer. Quantum dots have the advantages of providing tunable band gaps and the ability to absorb specific wavelength. 展开更多
关键词 Transparent Conducting Glass Titanium Dioxide (TIO2) Nanoparticles Organic Dyes Electrolyte
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