Shipeng Zhang , Xiaoshan Wang , Dewen Song , Xiang Fei , Mingwang Wang , Wenting Wu , Qingshan Zhao , Ruirui Zhu , Hui Ning , Mingbo Wu
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引用次数: 0
Abstract
Electrochemical reduction of carbon dioxide to high-value products is a promising strategy to achieve carbon neutrality, but is hindered by lacking of effective catalysts. Herein, a laser-induced mesoporous carbon (LPC) is quickly prepared by CO2 laser etching commercial polyimide film (PI) without any templates, which proved an artificial support for Bi2O3. The well-defined porous structure and unique nitrogen doping structure synergistically improve the activity and stability of Bi2O3@LPC in catalyzing CO2 electroreduction to formate. The as-made Bi2O3@LPC composite delivers a high faradaic efficiency of 98 % for formate at −150 mA cm−2. DFT calculations reveal the graphitic N in PLC helps stabilize the oxidized state of bismuth under reduction potentials by forming a special N–O–Bi structure. This work provides a new idea for the designing of metal/carbon composite electrocatalysts with nitrogen doped carbon materials as supports.
期刊介绍:
The journal Carbon is an international multidisciplinary forum for communicating scientific advances in the field of carbon materials. It reports new findings related to the formation, structure, properties, behaviors, and technological applications of carbons. Carbons are a broad class of ordered or disordered solid phases composed primarily of elemental carbon, including but not limited to carbon black, carbon fibers and filaments, carbon nanotubes, diamond and diamond-like carbon, fullerenes, glassy carbon, graphite, graphene, graphene-oxide, porous carbons, pyrolytic carbon, and other sp2 and non-sp2 hybridized carbon systems. Carbon is the companion title to the open access journal Carbon Trends. Relevant application areas for carbon materials include biology and medicine, catalysis, electronic, optoelectronic, spintronic, high-frequency, and photonic devices, energy storage and conversion systems, environmental applications and water treatment, smart materials and systems, and structural and thermal applications.