光催化
催化作用
甲酸
镍
醋酸
材料科学
太阳能燃料
光化学
化学
化学工程
有机化学
冶金
工程类
作者
Kai‐Yang Niu,You Xu,Haicheng Wang,Rong Ye,Huolin L. Xin,Feng Lin,Chixia Tian,Yanwei Lum,Karen C. Bustillo,Marca M. Doeff,Marc T. M. Koper,Joel W. Ager,Rong Xu,Haimei Zheng
出处
期刊:Science Advances
[American Association for the Advancement of Science (AAAS)]
日期:2017-07-07
卷期号:3 (7)
被引量:183
标识
DOI:10.1126/sciadv.1700921
摘要
Solar-driven photocatalytic conversion of CO2 into fuels has attracted a lot of interest; however, developing active catalysts that can selectively convert CO2 to fuels with desirable reaction products remains a grand challenge. For instance, complete suppression of the competing H2 evolution during photocatalytic CO2-to-CO conversion has not been achieved before. We design and synthesize a spongy nickel-organic heterogeneous photocatalyst via a photochemical route. The catalyst has a crystalline network architecture with a high concentration of defects. It is highly active in converting CO2 to CO, with a production rate of ~1.6 × 104 μmol hour-1 g-1. No measurable H2 is generated during the reaction, leading to nearly 100% selective CO production over H2 evolution. When the spongy Ni-organic catalyst is enriched with Rh or Ag nanocrystals, the controlled photocatalytic CO2 reduction reactions generate formic acid and acetic acid. Achieving such a spongy nickel-organic photocatalyst is a critical step toward practical production of high-value multicarbon fuels using solar energy.
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