Highly Selective Photocatalytic CO₂ Reduction to CH₄ by Ball-Milled Cubic Silicon Carbide Nanoparticles under Visible-Light Irradiation.

Content Provider	Europe PMC
Author	Li, Hao Sun, Jianwu
Copyright Year	2021
Abstract	Theultimate goal of photocatalytic CO2 reduction isto achieve high selectivity for a single product with high efficiency.One of the most significant challenges is that expensive catalystsprepared through complex processes are usually used. Herein, gram-scalecubic silicon carbide (3C-SiC) nanoparticles are prepared througha top-down ball-milling approach from low-priced 3C-SiC powders. Thisfacile mechanical milling strategy ensures large-scale productionof 3C-SiC nanoparticles with an amorphous silicon oxide (SiOx) shell and simultaneously induces abundant surfacestates. The surface states are demonstrated to trap the photogeneratedcarriers, thus remarkably enhancing the charge separation, while thethin SiOx shell prevents 3C-SiC from corrosionunder visible light. The unique electronic structure of 3C-SiC tacklesthe challenge associated with low selectivity of photocatalytic CO2 reduction to C1 compounds. In conjugation withefficient water oxidation, 3C-SiC nanoparticles can reduce CO2 into CH4 with selectivity over 90%.
ISSN	19448244
Journal	ACS Applied Materials & Interfaces
Volume Number	13
PubMed Central reference number	PMC7877699
Issue Number	4
PubMed reference number	33480244
e-ISSN	19448252
DOI	10.1021/acsami.0c19945
Language	English
Publisher	American Chemical Society
Publisher Date	2021-01-22
Access Restriction	Open
Rights License	This is an open access article published under a Creative Commons Attribution (CC-BY) License, which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited. © 2021 AmericanChemical Society. Publishedby American Chemical Society
Subject Keyword	photocatalysis CO2 reduction 3C-SiC selectivity CH4
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Medicine Materials Science