摘要
杂多酸盐作光敏剂光解水制取氢气，不需外加电子中继物，节省了一个中间环节，对提高量子效率有利，杂多酸盐是一种较好的光解水光敏剂。但是不同的杂多酸盐作光敏剂，产氢效率差异很大，研究造成这种差异的原因，对开发合成产氢效率高的杂多酸盐具有指导意义。在水－甲醇体系中，选用胶体铂作催化剂，３００～４００ｎｍ紫外光照射，研究了１５种Ｋｅｇｇｉｎ结构杂多酸盐作光敏剂光解水制氢，结果表明，杂多酸盐的半波电位是决定其产氢效率高低的主要因素，半波电位介于－０．１５～－０．３５Ｖ之间的杂多酸盐产氢效率较高。
It was unnecessary to add electron relaying material by using heteropolyate as photosensitizer to photodecompose water for preparing hydrogen, it saves a middle step and benefits to raise the efficiency of quantum. Heteropolyates is a good kind of photosensitizer for splitting water, but The hydrogen producing efficiency varies in a large range with different heteropolyates as photosensitizers. The research on what makes the difference can direct the work of developing and sythesizing heteropolyate with high hydrogen producing efficiency. In water-methanol system, using couoid platinum as catalysist and 300～400 nm ultraviolet rays fifteen kinds of heteropolyates with Keggin structure have been studied in photodecomposition water for preparing hydrogen. The results show that self-wave potential of heteropolyate is the main factor to determine its hydrogen producing efficiency. The hydrogen producing efficiency is higher with the heteropolyates of self-wave potential between -0.15～-0.35 V.
出处
《石油化工高等学校学报》
CAS
1999年第1期11-13,共3页
Journal of Petrochemical Universities
基金
国家自然科学基金
关键词
光解水
杂多酸盐
制氢
光敏剂
Photodecomposition water
Heteropolyate
Preparing hydrogen
Photosensitizer
Heteropoly acid
Self-wave potential
