In:
ECS Meeting Abstracts, The Electrochemical Society, Vol. MA2020-02, No. 61 ( 2020-11-23), p. 3132-3132
Abstract:
(Invited) Photocatalytic CO 2 conversion to hydrocarbon fuels, which makes solar energy harvesting and CO 2 reduction reaction (CO 2 RR) simultaneously, is a killing two birds with one stone approach to solving the energy and environmental problems. However, challenges are the low photon-to-fuel conversion efficiency of the photocatalysts and lack of the product selectivity. Recently, 2D-layered nanomaterials with defect engineering, e.g. the carbon interstitial-doped SnS 2 nanosheets [ Nature Comm. 9, 169 (2018)], have shown promise for CO 2 RR. Here, I will present a different case, MoS 2 with vacancies controlled by plasma. Productivity and selectivity of CO 2 RR were found to be dependent strongly with the different Mo/S ratios of the MoS 2 of single to few layers. Orders-of-magnitude enhancement in productivity and selectivity of C2 product over 97% has been obtained. The role and interplay of the defects and the hosting materials, and their effects on the adsorption of CO 2 and subsequent CO 2 RR, studied by the near-ambient pressure X-ray photoemission spectroscopy, along with density functional theory will be discussed.
Type of Medium:
Online Resource
ISSN:
2151-2043
DOI:
10.1149/MA2020-02613132mtgabs
Language:
Unknown
Publisher:
The Electrochemical Society
Publication Date:
2020
detail.hit.zdb_id:
2438749-6
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