@article{Shao2021, 
author = {Weiwei Shao and Shumin Wang and Juncheng Zhu and Xiaodong Li and Xingchen Jiao and Yang Pan and Yongfu Sun and Yi Xie},
title = {In-plane heterostructured Ag2S-In2S3 atomic layers enabling boosted CO2 photoreduction into CH4},
year = {2021},
journal = {Nano Research},
volume = {14},
number = {12},
pages = {4520-4527},
keywords = {atomic layers, carrier dynamics, in-plane heterostructure, selective CO2 photoreduction},
url = {https://www.sciopen.com/article/10.1007/s12274-021-3365-4},
doi = {10.1007/s12274-021-3365-4},
abstract = {Sluggish separation and migration kinetics of the photogenerated carriers account for the low-efficiency of CO2 photoreduction into CH4. Design and construction two-dimensional (2D) in-plane heterostructures demonstrate to be an appealing approach to address above obstacles. Herein, we fabricate 2D in-plane heterostructured Ag2S-In2S3 atomic layers via an ion-exchange strategy. Photoluminescence spectra, time-resolved photoluminescence spectra, and photoelectrochemical measurements firmly affirm the optimized carrier dynamics of the In2S3 atomic layers after the introduction of in-plane heterostructure. In-situ Fourier transform infrared spectroscopy spectra and density functional theory (DFT) calculations disclose the in-plane heterostructure contributes to CO2 activation and modulates the adsorption strength of CO* intermediates to facilitate the formation of CHO* intermediates, which are further protonated to CH4. In consequence, the in-plane heterostructure achieves the CH4 evolution rate of 20 μmol·g-1·h-1, about 16.7 times higher than that of the In2S3 atomic layers. In short, this work proves construction of in-plane heterostructures as a promising method for obtaining high-efficiency CO2-to-CH4 photoconversion properties.}
}