%0 Journal Article
%T Large-Scale Synthesis of Multifunctional Single-Phase Co2 C Nanomaterials.
%A Yang Z
%A Zhao T
%A Hao S
%A Wang R
%A Zhu C
%A Tang Y
%A Guo C
%A Liu J
%A Wen X
%A Wang F
%J Adv Sci (Weinh)
%V 10
%N 19
%D 2023 Jul 24
%M 37092564
%F 17.521
%R 10.1002/advs.202301073
%X Achieving scalable synthesis of nanoscale transition-metal carbides (TMCs), regarded as substitutes for platinum-group noble metals, remains an ongoing challenge. Herein, a 100-g scale synthesis of single-phased cobalt carbide (Co2 C) through carburization of Co-based Prussian Blue Analog (Co-PBA) is reported in CO2 /H2 atmosphere under mild conditions (230 °C, ambient pressure). Textural property investigations indicate a successful preparation of orthorhombic-phased Co2 C nanomaterials with Pt-group-like electronic properties. As a demonstration, Co2 C achieves landmark photo-assisted thermal catalytic CO2 conversion rates with photo-switched product selectivity, which far exceeds the representative Pt-group-metal-based catalysts. This impressive result is attributed to the excellent activation of reactants, colorific light absorption, and photo-to-thermal conversion capacities. In addition to CO2 hydrogenation, the versatile Co2 C materials show huge prospects in antibacterial therapy, interfacial water evaporation, electrochemical hydrogen evolution reaction, and battery technologies. This study paves the way toward unlocking the potential of multi-functional Co2 C nanomaterials.