Two-Dimensional Janus p-n Heterojunction of Co_(3)O_(4)and CoMoO_(4)for Boosting Photocatalytic Oxidative Desulfurization  

作　　者：Dongxiao Wang Zheng Lan Yue Li Ying Huang Kun Yin Lixia Yang Liangjiu Bai Donglei Wei Huawei Yang Hou Chen Mingchuan Luo 

机构地区：[1]School of Chemistry and Materials Science,Ludong University,Yantai,Shandong,264025 China [2]School of Materials Science and Engineering,Peking University,Beijing,100871 China [3]College of Design and Engineering,National University of Singapore,Singapore,119077 Singapore

出　　处：《Chinese Journal of Chemistry》2025年第3期308-314,共7页中国化学(英文版)

基　　金：supported by the National Natural Science Foundation of China(No.21808098);the Project of Shandong Province Higher Educational Science(No.2022KJ122).

摘　　要：Photocatalytic aerobic oxidative desulfurization(PAODS)is a sustainable alternative technology to traditional,energy-intensive fuel desulfurization methods.Nonetheless,its advancement is hindered by the notable challenge of inadequate electron-hole separation efficiency within the existing catalytic systems.Herein,a Janus 2D/2D heterostructure composed of Co_(3)O_(4)and CoMoO_(4)is reported for the PAODS of thiophenic sulfides.Through a combination of detailed experimental characterizations and density functional theory(DFT)calculations,we elucidate the formation of a typeⅡp-n heterojunction in the catalyst,significantly enhancing electron-hole separation through electric field force and reducing the possibility of electron-hole recombination due to the spatial separation of redox centres.The photocatalyst exhibits exceptional activity and demonstrates an impressive performance of 10.4 mmol·g^(-1)·h^(-1)in the oxidation of dibenzothiophene(DBT).Moreover,the photocatalyst demonstrates profound desulfurization capabilities in real diesel,reinforcing its promising prospects for industrial application.These discoveries provide invaluable insights,both scientifically and practically,towards the development of advanced photocatalysts for PAODS processes.

关 键 词：Cog_(3)O_(4) CoMoO_(4) Density functional theory HETEROSTRUCTURE DIBENZOTHIOPHENE DESULFURIZATION Photocatalysis Nanostructures 

分 类 号：O64[理学—物理化学]