摘要
研究了以甘油为电子给体在Pt/TiO2上光催化生成氢的反应.结果表明甘油能显著地提高光催化放氢效率,并且其自身的降解活性也很好.研究了反应时间、甘油起始浓度、溶液pH值、甘油废水中共存物对光催化放氢的影响.甘油光催化降解最终产物是H2O和CO2,检测到了甘油醛、羟基乙醛、羟基乙酸、甲醛等中间产物.探讨了可能的反应机理.
Using glycerol as electron donor, the photocatalytic hydrogen generation over Pt/TiO2has been investigated. The results show that glycerol can not only improve the efficiency be decomposed effectively. The factors which affect photocatalytic hy of photocatalytic hydrogen generation but also drogen generation, such as irradiation time, initial concentrations of the glycerol solution, pH-value of the suspensions and the coexisting substances were studied. The final products of glycerol oxidation were H2O and CO2. Glycoladehyde, glycolic acid, formaldehyde were identified as the intermediate products. A possible reaction mechanism was discussed.
出处
《分子催化》
EI
CAS
CSCD
北大核心
2008年第2期166-171,共6页
Journal of Molecular Catalysis(China)
基金
国家重点规划基础研究项目(973计划2003CB214503)
国家自然科学基金(No.20763006)
江西省自然科学基金资助项目(2007GZH1754).
关键词
光催化
制氢
甘油
降解
Photocatalysis
Hydrogen generation
Glycerol
Degradation
