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Synergistic Pt-WO3 Dual Active Sites to Boost Hydrogen Production from Ammonia Borane
Chen, Wenyao; Fu, Wenzhao; Qian, Gang; Zhang, Bingsen; Chen, De; Duan, Xuezhi; Zhou, Xinggui
2020-03-27
Source PublicationISCIENCE
Volume23Issue:3
AbstractDevelopment 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.
DOI10.1016/j.isci.2020.100922
WOS IDWOS:000528358900044
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/83018
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Chen, Wenyao,Fu, Wenzhao,Qian, Gang,et al. Synergistic Pt-WO3 Dual Active Sites to Boost Hydrogen Production from Ammonia Borane[J]. ISCIENCE,2020,23(3).
APA Chen, Wenyao.,Fu, Wenzhao.,Qian, Gang.,Zhang, Bingsen.,Chen, De.,...&Zhou, Xinggui.(2020).Synergistic Pt-WO3 Dual Active Sites to Boost Hydrogen Production from Ammonia Borane.ISCIENCE,23(3).
MLA Chen, Wenyao,et al."Synergistic Pt-WO3 Dual Active Sites to Boost Hydrogen Production from Ammonia Borane".ISCIENCE 23.3(2020).
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