多孔阵列TiO<sub>2</sub>/Ti的光电催化性能

引用本文: 雷建飞, 李伟善. 多孔阵列TiO₂/Ti的光电催化性能[J]. 物理化学学报, 2009, 25(06): 1173-1178. doi: 10.3866/PKU.WHXB20090614 shu

Citation: LEI Jian-Fei, LI Wei-Shan. Photoelectrocatalytic Performance of Arrayed Porous TiO₂/Ti[J]. Acta Physico-Chimica Sinica, 2009, 25(06): 1173-1178. doi: 10.3866/PKU.WHXB20090614 shu

多孔阵列TiO₂/Ti的光电催化性能

雷建飞 ,
李伟善

摘要:

以聚苯乙烯微球(PS)阵列为模板, 溶胶浸渍法制得负载于钛基的多孔阵列二氧化钛材料TiO2/Ti, 用SEM和XRD分析其表面形貌和晶相组成. 将此多孔材料用作电极, 研究其间歇光照开路电位谱和光电流谱, 催化降解甲基橙以及催化析氢反应等光电催化性能. 结果表明, 在光电协同作用下多孔阵列TiO2/Ti具有很高的催化活性, 2.5 h内对甲基橙的降解率达到87.1%, 5.0 h高达97.9%, 反应表观速率常数为0.77 h-1;光照作用可以使析氢电位降低0.13 V.

关键词:

English

Photoelectrocatalytic Performance of Arrayed Porous TiO₂/Ti

1.
School of Chemistry and Environment, South China Normal University, Guangzhou 510006, P. R. China
Received Date: 24 October 2008
Available Online: 05 June 2009

Abstract:

Arrayed porous titaniumdioxide loaded on titanium(TiO2/Ti) was fabricated using the sol-dipping method with polystyrene sphere (PS) arrays as a template. Its morphology and crystal phase composition were characterized by SEM and XRD, and its photoelectrocatalytic performance was studied using open-circuit potential curves, photocurrents with intermittent irradiation, degradation of methyl orange and hydrogen-evolution overpotential. Results show that arrayed porous TiO2/Ti has high catalytic activity because of the photoelectro-synergisitic effect. The degradation rate of methyl orange was 87.1% after reaction for 2.5 h and 97.9% after reaction for 5 h, and it has an apparent reaction rate constant of 0.77 h-1. The hydrogen-evolution overpotential on this material was reduced from -0.81 V to -0.68 V under ultraviolet irradiation.

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

多孔阵列TiO₂/Ti的光电催化性能

English

Photoelectrocatalytic Performance of Arrayed Porous TiO₂/Ti

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

多孔阵列TiO2/Ti的光电催化性能

English

Photoelectrocatalytic Performance of Arrayed Porous TiO2/Ti

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

多孔阵列TiO₂/Ti的光电催化性能

Photoelectrocatalytic Performance of Arrayed Porous TiO₂/Ti

CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs