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复合溶胶电泳制备TiO_2涂层的研究 刘青1,谢冰1,李辉糯1,章少华1 (1.南昌大学,江西,南昌,330047) 摘要:研究了由TiO_2颗粒和TiO_2溶胶组成的复合TiO_2溶胶,以及其电泳制备涂层的光催化性.实验发现复合溶胶的Zeta电位小于相应的溶胶Zeta电位.对于溶胶在不同温度下煅烧制备的TiO_2粉末进行XRD表征,结果表明随着煅烧温度升高,粉末结晶程度提高,从200 ℃开始出现锐钛矿TiO_2晶相,在550 ℃出现金红石型TiO_2.光催化性能表明,由溶胶而得到的TiO_2涂层的光催化性能要好于复合TiO_2溶胶的光催化性能. 关键词:TiO_2; 复合溶胶; 光催化; 电泳; titania; composite sol; photocatalysis; electrophoresis; [全文内容正在添加中] ......
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will decrease the photocatalytic H2 evolution activity. Key words: Y2Cu2O5; photocatalysis; H2 production; simulated sunlight irradiation Y2Cu2O5作为高温超导材料YBa2Cu3O7-x的第二相存在,具备较好的电磁性能,是一种优良的p型半导体材料[1].目前,对Y2Cu2O5......
electrons with oxygen in photocatalytic degradation for methyl orange. Key words: TiO2/SnO2 nanofilm; silver; photodeposition; photocatalysis; degradation; methyl orange  ...TiO2/ITO降解率的3.30倍. 图7 降解甲基橙的降解率随反应时间的变化 Fig.7 Dependence of photocatalysis time for methyl orange degradation rate on nature of semiconductor films: (a) Ag- TiO2/SnO2; (b) TiO2/SnO2; (c) TiO2......
for 1 h. Key words: titania; silicon dioxide; neodymium doping; photocatalysis; sol-gel method 1 Introduction Photocatalysis allows pollution abatement under mild condition (room temperature... of rare earth ions doping on photocatalytic properties of TiO2 and found the bandgap of the catalysts shift into the visible region[4-6]. However, practical applications of photocatalysis are limited......
than that of pure TiO2 under simulated solar light and UV light. Key words: modified TiO2; photocatalyst; photocatalysis; sol-gel method; KI; KIO3 纳米TiO2活性高,化学稳定性好,对人体无害,是理想的环保型光催化材料.TiO2光催化氧化技术具有在常..., DAI Xue-gang, DU Zu-wei. Effects of metal ion dopants on TiO2 photocatalysis[J]. Progress In Chemistry, 2004, 16(5): 738-746. [2] ZHAO Wei, MA Wan-hong, CHEN Chun-cheng, ZHAO Jin-cai. Efficient......
of applications as diverse as lighting devices,displays,lasers,optical fibers and associated telecommunication networks,security markings,solar energy conversion and photocatalysis,or bioanalysis......
of applications as diverse as lighting devices,displays,lasers,optical fibers and associated telecommunication networks,security markings,solar energy conversion and photocatalysis,or bioanalysis......
photocatalysis at the molecular level.In a recent work published in Nature catalysis,Lin et al.关键词:......
; composite electroplating; photocatalysis; Rhodamine B 近年来,半导体光催化作为一种污水处理方法引起了研究者们的极大兴趣[1-3],在众多的半导体光催 化剂中,TiO2纳米粒子以光稳定性,高效性,无毒和廉价备受人们的青睐.大多数研究者围绕光催化剂对有机污染物的降解效率和处理后与水的分离问题展开研究. 关于TiO2的催化效率问题,主要是光生电子与空穴的... of photocatalysis on TiO2 under visible light irradiation[J]. Chinese Science Bulletin, 2003, 48(21): 2199-2204. (编辑 李艳红) 基金项目:廊坊师范学院重点科研项目(LSZZ201002);河北省科技支撑计划项目(11276732) 收稿日期:2010-12-30 ;修订日期:2011-03-20 通信作......