Catalytic CO2 reduction by palladium-decorated silicon–hydride nanosheets

被引:2
|
作者
Chenxi Qian
Wei Sun
Darius L. H. Hung
Chenyue Qiu
Meysam Makaremi
Sai Govind Hari Kumar
Lili Wan
Mireille Ghoussoub
Thomas E. Wood
Meikun Xia
Athanasios A. Tountas
Young Feng Li
Lu Wang
Yuchan Dong
Ilya Gourevich
Chandra Veer Singh
Geoffrey A. Ozin
机构
[1] University of Toronto,Materials Chemistry and Nanochemistry Research Group, Solar Fuels Cluster, Department of Chemistry
[2] University of Toronto,Department of Materials Science and Engineering
[3] Nankai University,College of Environmental Science and Engineering
[4] University of Toronto,Department of Chemical Engineering and Applied Chemistry
来源
Nature Catalysis | 2019年 / 2卷
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摘要
Heterogeneous conversion of CO2 to fuels by Si surface hydrides has recently attracted broad research interest. Being earth-abundant, low-cost and non-toxic, elemental Si is a very attractive candidate for this process, which targets CO2 conversion to synthetic fuels on a gigatonne-per-year scale. It is well known, however, that silicon hydrides react stoichiometrically with CO2, and all attempts have failed to achieve catalytic conversion. The problem originates from the formation of inactive silanols and siloxanes with permanent loss of Si hydrides. Here, we deposit Pd on the surface of Si nanosheets, aiming to address the core of the problem. An operando infrared study shows Si hydrides successfully regenerating on such surfaces exposed to CO2 and H2. We demonstrate that silicon–hydride nanosheets decorated with Pd nanoparticles can enable the reverse water–gas shift reaction in a catalytic cycle.
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页码:46 / 54
页数:8
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