摘要
光重整催化生物质-水溶液制氢被认为是一种高效环保的制氢方法。大量水溶性生物质已被证明可被有效利用从而提高光催化效率,但油性生物质却因其会与水形成两相不互溶体系而在光重整制氢应用中受到极大限制。本文通过水解法制备出锐钛型TiO2微球作为光催化剂,再通过硅烷偶联剂对其进行表面部分疏水改性使其具备双亲性,以此作为固体乳化剂稳定辛醇-水乳液。实验结果表明,TiO2经改性后能有效稳定辛醇-水乳液且明显提高光重整制氢效率。
Photoreforming hydrogen production from biomass-water solution is considered to be an efficient and environmentally friendly method.A large amount of water-soluble biomass has been proved to be effectively utilized to improve photocatalytic efficiency,but oily biomass is greatly limited in the application of photoreforming hydrogen production due to its biphasic insoluble system with water.In this paper,anatase TiO2 microspheres were prepared by hydrolysis method as photocatalyst,and then modified with silane coupling agent to make it amphiphilic by partially hydrophobic surface modification,which could serve as solid emulsifier to stabilize octanol-water emulsion.The results show that modified TiO2 can efficiently stabilize octanol-water emulsion and obviously improve the efficiency of photoreforming hydrogen production.
作者
卜恩奇
陈颖
王超
BU En-Qi;CHEN Ying;WANG Chao(Guangdong Provincial Key Laboratory on Functional Soft Condensed Matter,School of Materials and Energy,Guangdong University of Technology,Guangzhou 510006,China)
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2019年第11期2468-2472,共5页
Journal of Engineering Thermophysics
基金
国家自然科学基金资助项目(No.51606046)
关键词
TIO2
表面改性
光重整制氢
乳液
TiO2
surface modification
photoreforming hydrogen production
emulsion
