文献类型：期刊文献

英文题名：Synergistic Pt-WO3 Dual Active Sites to Boost Hydrogen Production from Ammonia Borane

作者：Chen, Wenyao[1];Fu, Wenzhao[1];Qian, Gang[1];Zhang, Bingsen[2];Chen, De[3];Duan, Xuezhi[1];Zhou, Xinggui[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China;[3]Norwegian Univ Sci & Technol, Dept Chem Engn, N-7491 Trondheim, Norway

年份：2020

卷号：23

期号：3

外文期刊名：ISCIENCE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000528358900044)】；

基金：This work was financially supported by the Natural Science Foundation of China (21922803 and 21776077), the Shanghai Natural Science Foundation (17ZR1407300 and 17ZR1407500), the China Postdoctoral Science Foundation (BX20190116), the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning, the Shanghai Rising-Star Program 17QA1401200), the State Key Laboratory of Organic-Inorganic Composites (oic-201801007), and the Open Project of State Key Laboratory of Chemical Engineering (SKLChe-15C03).

语种：英文

摘要：Development of synergistic heterogeneous catalystswith active sites working cooperatively has been a pursuit of chemists. Herein, we report for the first time the fabrication and manipulation of Pt-WO3 dual-active-sites to boost hydrogen generation from ammonia borane. A combination of DFT calculations, structural characterization, and kinetic (isotopic) analysis reveals that Pt and WO3 act as the active sites for ammonia borane and H2O activation, respectively. A trade-off between the promoting effect of WO3 and the negative effect of decreased Pt binding energy contributes to a volcano-shaped activity, and Pt/CNT-5Wdelivers a 4-fold increased activity of 710.1 mol(H2).mol(Pt)(-1).min(-1). Moreover, WO3 is suggested to simultaneously act as the sacrificial site that can divert B-containing by-products away from Pt sites against deactivation, yielding an increase from 24% to 68% of the initial activity after five cycles. The strategy demonstrated here could shed a new light on the design and manipulation of dual-active-site catalysts.