钨基三氧化钨光阳极的制备及表征  

Preparation and characterization of a novel WO_3/W photoanode

作　　者：陈全鹏[1] 李雪谨[1] 黄可[1] 吕淑彬[1] 李金花[1] 周保学[1] 

机构地区：[1]上海交通大学环境科学与工程学院,上海200240

出　　处：《中国科技论文》2012年第12期921-923,共3页China Sciencepaper

基　　金：高等学校博士学科点专项科研基金资助项目(20110073110029);国家自然科学基金资助项目(21276153;21207088);上海市基础研究重点项目(11JC14062000)

摘　　要：采用水热反应法制备了结构新颖的高效WO3/W光阳极并研究了其光电催化性能。首先将预处理的钨片煅烧使其表面产生三氧化钨层以提供水热反应晶体生长所需的晶种,然后使用聚乙二醇作为导向剂控制晶体在其表面的生长方向,最后将水热反应的产物进行高温煅烧使其结晶化。研究结果表明,这一制备方法可以在钨表面生成高度有序的纳米条结构,在1.5V时的光电流能够达到1.8mA/cm2。A novel WO3/W photoanode has been synthesized through a facile hydrothermal process and its photoeleclrochemical properties have also been investigated. The tungsten sheet was prennealed to produce a thin-layer WO3 on surface to serve as seeded sites for crystal growth in hydrothenrmal reaction, which also provided a strong connection between the growing WO3 and substlate. Then the polyethylene glycol （PEG） was used as the structure-directing agent to confine the crystal growth. Highly aligned nanostrip structure can be formed by this preparation mute. The photocurrent density at 1.5 V can reach 1.8 mA/cm^2.

关 键 词：光催化 WO3 W 水热反应 氧化层 聚乙二醇 

分 类 号：O614.613[理学—无机化学]