Facile synthesis of C_(3)N_(4)-supported metal catalysts for efficient CO_(2) photoreduction  

作　　者：Yun-Nan Gong Bi-Zhu Shao Jian-Hua Mei Wei Yang Di-Chang Zhong Tong-Bu Lu 

机构地区：[1]Institute for New Energy Materials and Low Carbon Technologies,School of Materials Science and Engineering,School of Chemistry and Chemical Engineering,Tianjin University of Technology,Tianjin 300384,China [2]Key Laboratory of Jiangxi University for Functional Material Chemistry,College of Chemistry&Chemical Engineering,Gannan Normal University,Ganzhou 341000,China

出　　处：《Nano Research》2022年第1期551-556,共6页纳米研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.21861001,21931007,21962002,22001043,and 22071182);the National Key R&D Program of China(No.2017YFA0700104);the Natural Science Foundation of Jiangxi Province(No.20202BAB203001);the Science Foundation of Jiangxi Provincial Office of Education(No.GJJ190753);the 111 Project of China(No.D17003);the Science&Technology Development Fund of Tianjin Education Commission for Higher Education(No.2018KJ129).

摘　　要：Facile synthesis of photocatalysts with highly dispersed metal centers is a high-priority target yet still a significant challenge.In this work,a series of Co-C_(3)N_(4) photocatalysts with different Co contents atomically dispersed on g-CaN4 have been prepared via one-step thermal treatment of cobalt-based metal-organic frameworks(MOFs)and urea in the air.Thanks to the highly dispersed and rich exposed Co sites,as well as good charge separation efficiency and abundant mesopores,the optimal 25-Co-C_(3)N_(4),in the absence of noble metal catalysts/sensitizers,exhibits excellent performance for photocatalytic C0_(2) reduction to CO under visible.light irradiation,with a high CO evolution rate of 394.4μmol·g^(-1)·h^(-1),over 80 times higher than that of pure g-C_(3)N_(4)(4.9μmol·g^(-1)·h^(-1)).In:addition,by this facile synthesis strategy,the atomically dispersed Fe and Mn anchoring on g-C_(3)N_(4)(Fe-C_(3)N_(4) and Mn-C_(3)N_(4))have been also obtained,indicating the reliability and universality of this strategy in synthesizing photocatalysts with highly dispersed metal centers.This work paves a new way to develop cost-effective photocatalysts for photocatalytic C0_(2) reduction.

关 键 词：metal-organic frameworks highly dispersed metal g-C_(3)N_(4) PHOTOCATALYSTS C02 reduction 

分 类 号：O64[理学—物理化学]