摘要
以钛酸四丁酯和钨酸钠为主要原料,采用溶胶-凝胶法制备了WO_3-TiO_2复合光阳极,WO_3所占的质量分数分别为0.5%、1%、2%和3%。采用XRD和SEM表征了WO_3-TiO_2光阳极的结构,研究了WO3掺杂、热处理温度对薄膜结构和光解水制氢性能的影响。结果表明,WO_3掺杂提高了TiO_2光阳极的光解水制氢速率。当WO_3掺杂量为2%、热处理温度为400℃、WO_3-TiO_2复合光阳极为高结晶度的锐钛矿晶型时,光催化活性最好,光解水制氢速率为5.8μmol/h。
WO3-TiO2 composite photo-anodes were prepared by sol-gel method with butyltitanate and sodium tungstate as main rawmaterials. WO3 mass fraction was 0. 5%,1%,2% and 3%. Structure of WO3-TiO2 photo-anode was investigated by XRD and SEM. The effects of WO3 doping amount and heat treatment temperature on the structure and photocatalytic properties were discussed. The results indicate that WO3 doping improves the hydrogen production rate of WO3-TiO2 photo-anode. When the doped amount of WO3 is at 2%,heat treatment temperature is at 400℃,and WO3-TiO2 photo-anode is anatase with high crystallinity,the WO3-TiO2 photo-anode has the best photocatalytic properties. The hydrogen production amount is 58μmol in 10 hours.
出处
《沈阳工程学院学报（自然科学版）》
2016年第1期87-91,共5页
Journal of Shenyang Institute of Engineering:Natural Science
基金
辽宁省教育厅科研项目(L2014524)
