期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 59, 期 42, 页码 18572-18577出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202000318
关键词
CO selectivity; CO(2)reduction; DFT calculations; nickel; size dependence
资金
- National Science Foundation Major Research Instrumentation Program [CHE-1338173]
- San Diego State University (SDSU) start-up funds
- NSF award [CBET-1704992]
- National Natural Science Foundation of China (NSFC) [21476046]
- Science Fund for Distinguished Young Scholars of Heilongjiang Province of China [JC2017002]
- Special Fund of Northeast Petroleum University [GLJHB201901]
Closing the anthropogenic carbon cycle by converting CO(2)into reusable chemicals is an attractive solution to mitigate rising concentrations of CO(2)in the atmosphere. Herein, we prepared Ni metal catalysts ranging in size from single atoms to over 100 nm and distributed them across N-doped carbon substrates which were obtained from converted zeolitic imidazolate frameworks (ZIF). The results show variance in CO(2)reduction performance with variance in Ni metal size. Ni single atoms demonstrate a superior Faradaic efficiency (FE) for CO selectivity (ca. 97 % at -0.8 V vs. RHE), while results for 4.1 nm Ni nanoparticles are slightly lower (ca. 93 %). Further increase the Ni particle size to 37.2 nm allows the H(2)evolution reaction (HER) to compete with the CO(2)reduction reaction (CO2RR). The FE towards CO production decreases to under 30 % and HER efficiency increase to over 70 %. These results show a size-dependent CO(2)reduction for various sizes of Ni metal catalysts.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据