红磷-TiO复合光催化剂的制备及其光催化产氢性能

被引：2

作者：

石志盛

董新法

耿建铭

机构：

[1] 华南理工大学化学与化工学院

来源：

可再生能源 | 2016年 / 02期

基金：

广东省自然科学基金;

关键词：

光催化; 红磷; TiO2; 可见光; 产氢性能;

D O I：

10.13941/j.cnki.21-1469/tk.2016.02.020

中图分类号：

TQ116.2 [氢气]; O643.36 [催化剂];

学科分类号：

0817 ; 081705 ;

摘要：

采用机械混合法制备了红磷-Ti O2（P-Ti O2）复合光催化剂,并对催化剂进行了X射线衍射、紫外-可见光漫反射、透射电子显微镜表征。以甲醇为牺牲试剂,铂为助催化剂,在可见光辐照下对P-Ti O2复合光催化剂进行了光催化分解水产氢性能测试,并提出了红磷和Ti O2可能的作用机理。研究结果表明:红磷和Ti O2复合后,光催化剂的产氢性能显著提高,当P-Ti O2中Ti O2的质量分数为5%时,光催化剂的产氢性能最高,产氢速率可达到52.6μmol/（h·g）,为纯红磷样品的2.54倍;红磷和Ti O2复合后在其接触面上形成了p-n结,并通过p-n结实现了光生电子从红磷到Ti O2的传递,从而与Pt发生还原反应产生氢气。

引用

页码：274 / 278

页数：5

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