Selective light absorber-assisted single nickel atom catalysts for ambient sunlight-driven CO2 methanation
Year: 2019
Type: article
Abstract: Ambient sunlight-driven CO 2 methanation cannot be realized due to the temperature being less than 80 °C upon irradiation with dispersed solar energy. In this work, a selective light absorber was used to construct a photothermal system to generate a high temperature (up to 288 °C) under weak solar irradiation (1 kW m −2 ), and this temperature is three times higher than that in traditional photothermal catalysis systems. Moreover, ultrathin amorphous Y 2 O 3 nanosheets with confined single nickel atoms (SA Ni/Y 2 O 3 ) were synthesized, and they exhibited superior CO 2 methanation activity. As a result, 80% CO 2 conversion efficiency and a CH 4 production rate of 7.5 L m −2 h −1 were achieved through SA Ni/Y 2 O 3 under solar irradiation (from 0.52 to 0.7 kW m −2 ) when assisted by a selective light absorber, demonstrating that this system can serve as a platform for directly harnessing dispersed solar energy to convert CO 2 to valuable chemicals.
Source: Nature Communications
Authors: Yaguang Li, Jianchao Hao, Hui Song, Fengyu Zhang, Xianhua Bai, Xianguang Meng, Hongyuan Zhang, Shufang Wang, Yong Hu, Jinhua Ye
Institutions: Hebei University, Hokkaido University, National Institute for Materials Science, Research Center for Materials Nanoarchitectonics, North China University of Science and Technology, Zhejiang Normal University, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering Tianjin
Language: English
Subfield: Catalysis
Field: Chemical Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $5,200
OpenAlex ID: W2947298237