Chemistry

Strained few-layer MoS₂ with atomic copper and selectively exposed in-plane sulfur vacancies for CO₂ hydrogenation to methanol

S. Zhou, W. Ma, et al.

Discover groundbreaking research by Shenghui Zhou, Wenrui Ma, Uzma Anjum, Mohammadreza Kosari, Shibo Xi, Sergey M. Kozlov, and Hua Chun Zeng on a novel mesoporous silica-encapsulated MoS₂ catalyst that optimizes CO₂ hydrogenation to methanol, showcasing exceptional yield and selectivity.

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Abstract

In-plane sulfur vacancies (SV) in molybdenum disulfide (MoS₂) were newly unveiled for CO₂ hydrogenation to methanol, whereas edge SV were found to facilitate methane formation. This research reports a mesoporous silica-encapsulated MoS₂ catalyst with fullerene-like structure and atomic copper (Cu/MoS₂@SiO₂). The fullerene-like structure selectively exposes in-plane SV and reduces edge SV exposure. The Cu/MoS₂@SiO₂ catalyst exhibits a stable methanol yield of 6.11 molMeOH molMo⁻¹ h⁻¹ with 72.5% selectivity at 260 °C, exceeding other catalysts. In-situ DRIFTS and XAS, along with theoretical calculations, demonstrate the mechanism and the promoting role of copper and strain.

Publisher

Nature Communications

Published On

Sep 21, 2023

Authors

Shenghui Zhou, Wenrui Ma, Uzma Anjum, Mohammadreza Kosari, Shibo Xi, Sergey M. Kozlov, Hua Chun Zeng

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