Electron-transfer Dynamics and Photocatalytic H2-production Activity of PbS@ Cu2S Nanocomposites
學年 113
學期 1
出版（發表）日期 2024-09-01
作品名稱 Electron-transfer Dynamics and Photocatalytic H2-production Activity of PbS@ Cu2S Nanocomposites
作品名稱（其他語言）
著者 Chi-Jung Chang, Shao-Ching Hsieh, Jemkun Chen, Yi-Ching Wang, Chao-Lung Chiang, Yan-Gu Lin
單位
出版者
著錄名稱、卷期、頁數 Journal of the Taiwan Institute of Chemical Engineers, 162, 105587
摘要 Background Lead citrate is a precursor that can be prepared by recycling the spent lead paste of lead-acid batteries. Lead citrate is used to synthesize lead oxide, which can be repeatedly utilized for the lead-acid battery application. Methods We report a new application of lead citrate precursor to synthesize PbS@Cu2S nanomaterials for photocatalytic H2 production. PbS@Cu2S was prepared by microwave-assisted hydrothermal and ion-exchange processes. The electron-transfer dynamics and H2-production activity of PbS@Cu2S photocatalysts were studied. Significant findings A S-scheme heterojunction is proposed based on the results of Tauc plots, ultraviolet photoelectron spectroscopy, the electron paramagnetic resonance scavenger test, and in situ near-edge X-ray absorption fine structure (NEXAFS) analysis. Results of in situ NEXAFS reveal the transfer of photoexcited electrons from PbS to Cu2S. By loading an optimized amount of Cu2S, the carrier separation and photocatalytic activity of PbS@Cu2S photocatalysts are improved. This technology can transform the lead citrate precursor to the PbS@Cu2S photocatalyst with excellent high H2 production activity (3824 μmol g−1 h−1).
關鍵字 PbS@Cu2S nanocomposites, Photocatalytic Hydrogen-production, Electron-transfer Dynamics, In-situ NEXAFS
語言 en
ISSN
期刊性質 國外
收錄於 SCI SSCI Scopus
產學合作
通訊作者
審稿制度 1
國別 NLD
公開徵稿
出版型式 ,電子版
SDGS 永續城市與社區,氣候行動,可負擔的潔淨能源,產業創新與基礎設施