High Loading of Transition Metal Single Atoms on Chalcogenide Catalysts

• DOI: 10.1021/jacs.1c01097
• Publication Date: 2021-05-21T17:30:33Z
• Authors: Jianwei Zheng; Konstantin Lebedev; Simson Wu; Chen Huang; Tuğçe Ayvalı; Tai-Sing Wu; Yiyang Li; Ping-Luen Ho; Yun-Liang Soo; Angus Kirkland; Shik Chi Edman Tsang
• Keywords: Chalcogen; Noble metal

Transition metal doped chalcogenides are one of the most important classes catalysts that have been attracting increasing attention for petrochemical and energy related chemical transformations due to their unique physiochemical properties. For practical applications, achieving maximum atom utilization by homogeneous dispersion metals on surface is essential. Herein, we report a detailed study deposition method using thiourea coordinated transition complexes. This allows preparation library wide range single atoms including both noble non-noble (Fe, Co, Ni, Cu, Pt, Pd, Ru) with loading as high 10 wt % various ultrathin 2D (MoS2, MoSe2, WS2 WSe2). As demonstrated state-of-the-art characterization, interact strongly anions anion vacancies in exfoliated materials, leading absence agglomeration. Taking Fe MoS2 benchmark, it has found atomically dispersed until %, beyond this loading, formation coplanar clusters evident. Atomic Fe, electron density at its conduction band, exhibits superior intrinsic activity stability CO2 hydrogenation CO per compared corresponding other reported reverse water–gas-shift reactions.