Boosting syngas production in photoelectrochemical CO_(2) reduction through organic molecule interaction with copper photoanodes  

作　　者：Chenchen Zhang Chaofeng Chen Junjun Mao Dan Wang Peng Luan Qingqing Song Yuanming Xie Yao Wang Yong Zhao Ying Zhang Yongfa Zhu 

机构地区：[1]Key Laboratory of Synthetic and Biological Colloids Ministry of Education,School of Chemical and Material Engineering,Jiangnan University,Wuxi 214122,China [2]State Key Laboratory of Catalysis,Dalian National Laboratory for Clean Energy,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,China [3]CSIRO Energy Centre,Mayfield West,NSW 2304,Australia [4]Department of Chemistry,Tsinghua University,Beijing 100084,China

出　　处：《Nano Research》2025年第4期125-133,共9页纳米研究(英文版)

基　　金：supported by the National Natural Science Foundation of China(No.22379054);Startup Funding at Jiangnan University.

摘　　要：Photoelectrochemical syngas production using photoanode-driven systems from aqueous CO_(2) is a promising technology.To address the challenge of poor selectivity caused by the wide band gap of photoelectrode,we introduce a novel photoanode,PDI/Cu_(2)O/Cu,where PDI is the perylene tetracarboxylic di-(propyl imidazole).Using Cu_(2)O as a substrate enhances charge transfer kinetics,while PDI modification mitigates photocorrosion and augments photoelectrochemical CO_(2) reduction reaction(PEC CO_(2)RR)activity.This enhancement stems from PDI’s narrow band gap and efficient visible light absorption.The syngas production achieved a noteworthy 124.47μmol/(cm^(2)·h)at 1.57 V vs.RHE,making it an optimal feedstock gas for hydrocarbon synthesis.Detailed UV-vis spectra indicate that layered structure significantly improves the absorption edge of the photoanode,facilitating enhanced utilization of visible light.Additionally,the electron lifetime of the PDI/Cu_(2)O/Cu photoanode is substantially increased which is also one of the factors affecting the reactivity,as demonstrated by the Bode phase plot.

关 键 词：photoelectrochemical(PEC)CO_(2)reduction syngas production PHOTOANODE metal-organic framework(MOF) 

分 类 号：O646[理学—物理化学]