摘要
Retaining the ultrathin structure of two-dimensional materials is very important for stabilizing their catalytic performances.However,aggregation and restacking are unavoidable,to some extent,due to the van der Waals interlayer interaction of two-dimensional materials.Here,we address this challenge by preparing an origami accordion structure of ultrathin twodimensional graphitized carbon nitride(oa-C_(3)N_(4))with rich vacancies.This novel structured oa-C_(3)N_(4) shows exceptional photocatalytic activity for the CO_(2) reduction reaction,which is 8.1 times that of the pristine C_(3)N_(4).The unique structure not only prevents restacking but also increases light harvesting and the density of vacancy defects,which leads to modification of the electronic structure,regulation of the CO_(2) adsorption energy,and a decrease in the energy barrier of the carbon dioxide to carboxylic acid intermediate reaction.This study provides a new avenue for the development of stable highperformance two-dimensional catalytic materials.
基金
Jilin Province Science and Technology Development Program,Grant/Award Number:20190201233JC
Project for Self-innovation Capability Construction of Jilin Province Development and Reform Commission,Grant/Award Number:2021C026
Program for JLU Science and Technology Innovative Research Team,Grant/Award Numbers:JLUSTIRT,2017TD-09
National Natural Science Foundation of China,Grant/Award Numbers:12034002,51872116
Natural Science Funds for Distinguished Young Scholar of Heilongjiang Province,Grant/Award Number:JC2018004
Excellent Young Foundation of Harbin Normal University,Grant/Award Number:XKYQ201304。