文献类型：期刊文献

英文题名：Tuning charge transfer of Pt cluster by support defects in Pt/TiO2 for photocatalytic conversion of fatty acid into diesel-like alkane

作者：Long, Feng[1] Cao, Xincheng[1] Liu, Peng[1] Jiang, Xia[1] Jiang, Jianchun[1,2] Zhang, Xiaolei[3] Xu, Junming[1,2]

第一作者：Long, Feng

通信作者：Xu, JM[1]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Key Lab Biomass Energy & Mat, Key Lab Chem Engn Forest Prod,Natl Forestry & Gras, Nanjing 210042, Jiangsu Provinc, Peoples R China;[2]Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Res, Nanjing 210037, Peoples R China;[3]Univ Strathclyde, Dept Chem & Proc Engn, Glasgow G1 1XJ, Scotland

年份：2022

卷号：375

外文期刊名：JOURNAL OF CLEANER PRODUCTION

收录：;EI(收录号：20223912791039);Scopus(收录号：2-s2.0-85138455086);WOS:【SCI-EXPANDED(收录号:WOS:000862647400006)】；

基金：Acknowledgements Our investigation was supported by the ?National Key Research and Development Project? (Grant No. 2019YFB1504005) .

语种：英文

外文关键词：Photocatalytic; Oxygen vacancy; Density functional theory calculation; H spillover; Pt; TiO2

摘要：Efficient deoxygenation for the bio-derived fatty acid is paramount to producing diesel-like alkane and usually requires harsh reaction conditions. Here, we reported an efficient conversion system for the photocatalytic conversion of fatty acid over Pt/TiO2 catalysts and acid conversion higher than 99.0% (yield nearly 84.5%) under the mild conditions 30 degrees C, 0.1 MPa H2, and 365 nm light. X-ray photoelectron spectroscopy (XPS) and Density Functional Theory (DFT) calculations suggest that the oxygen vacancies TiO2 can achieve the charge transfer from TiO2 support to Pt clusters. The electron-rich Pt cluster can promote hydrogen spillover to form a hydrogenrich surface. Thus, it leads to the photo-decarboxylation Cn-1 alkyl radical being amenable to proton hydrogenation to produce Cn-1 alkane. Detailed characterization demonstrates that 0.50 wt% Pt/TiO2 has superior photocatalytic performance. Introducing the Pt atoms can promote the formation the oxygen vacancies and reverse charge transfer, which determines the acid adsorption and conversion mechanism.