文献类型：期刊文献

英文题名：Loading of Co3O4 onto Pt-modified nitrogen-doped TiO2 nanocomposites promotes photocatalytic hydrogen production

作者：Wei, Wen-Dong[1];Liu, Xiang-Yu[1];Cui, Shi-Cong[1];Liu, Jin-Gang[1]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Mat, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2017

卷号：7

期号：41

起止页码：25650

外文期刊名：RSC ADVANCES

收录：;EI(收录号：20172703890579);WOS:【SCI-EXPANDED(收录号:WOS:000401535100058)】；

基金：This study was financially supported by the NSF of China (no. 21271072, 21571062 to JGL; 21571063 to SCC), the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning to JGL, and the Fundamental Research Funds for the Central Universities (no. 222201717003).

语种：英文

外文关键词：Photocatalysts - Doping (additives) - Photocatalysis - Fuels - Nitrogen - Platinum - Hydrogen production - Nanocomposites

摘要：Photocatalytic water splitting has been considered as one of the most promising methods to produce hydrogen as a source of clean fuel. Use of co-catalysts and elemental doping in TiO2 has been extensively explored for effective photocatalysis. Here we report the synthesis of visible light responsive Pt and Co3O4 co-modified nitrogen-doped TiO2 (N-TiO2) nanocomposites for efficient photocatalytic hydrogen production. Pt-Co3O4(S)/N-TiO2 (PCNT(S)) and Pt-Co3O4(D)/N-TiO2 (PCNT(D)) composites were synthesized by one-and two-step methods, respectively. Experimental results showed that additional loading of Co3O4 onto a very low content (0.02 wt%) Pt-modified N-TiO2 nanocomposite significantly increases the efficiency of photocatalytic hydrogen production. Catalyst composites prepared by the two-step method, where close interaction occurred between the surface-loaded Co3O4 and Pt on the N-TiO2 nanoparticles, showed much higher photocatalytic activity for hydrogen production than that prepared by the one-step method, where Co3O4 is evenly dispersed in N-TiO2. The position of the co-catalyst Co3O4 in TiO2 has a significant effect on the photocatalytic properties of the prepared photocatalysts.