文献类型：期刊文献

英文题名：Localized surface-plasmon resonance effect as a new driver of Z-scheme electron transfer in cerium dioxide–graphitic carbon nitride heterojunctions

作者：Li, Xiang[1,2,3] Wu, Ting[1,2,3] Liang, Long[1,2,3,4] Tian, Qingwen[1,2,3] Yang, Qiang[1,2,3] Zhu, Yawei[1,2,3] Fang, Guigan[1,2,3,5]

第一作者：Li, Xiang

机构：[1] Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Key Lab. of Biomass Energy and Material, Jiangsu Province, China; [2] Co-Innovation Center of Efficient Processing and Utilization of Forest Resource, Jiangsu Province, China; [3] Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration, National Engineering Lab. for Biomass Chemical Utilization, Nanjing, 210042, China; [4] State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, China; [5] Shandong Huatai Paper Co., Ltd., Shandong Province, Dongying, 257335, China

年份：2024

卷号：349

外文期刊名：Separation and Purification Technology

收录：EI(收录号：20240115020);Scopus(收录号：2-s2.0-85192449305)

语种：英文

外文关键词：Bamboo - Carbon nitride - Cerium oxide - Degradation - Electric fields - Particle size - Photocatalytic activity - Surface plasmon resonance

摘要：The intersecting interface between the two semiconductors of cerium dioxide (CeO2)–graphitic carbon nitride (g-C3N4) heterojunctions, which have demonstrated excellent photocatalytic activity, inhibits the rapid compounding of the photogenerated electron–hole pairs of g-C3N4. CeO2–g-C3N4 heterojunctions with Z-scheme and type-II electron-transfer routes were prepared via calcination in argon and air atmospheres, respectively. The built-in electric field theory cannot be used to explain the presence of a type-II electron-transfer route in CeO2–g-C3N4 heterojunctions. According the femtosecond transient absorption spectra, the localized surface-plasmon resonance (LSPR) effect of CeO2 drove the Z-scheme electron transfer in CeO2–g-C3N4 heterojunctions. The CeO2–g-C3N4 heterojunction exhibited a type-II electron-transfer route when the particle size of CeO2 increased, which attenuated the LSPR effect. The CeO2–g-C3N4 heterojunction with the Z-scheme electron-transfer route exhibited 4.4 times higher degradation efficiency for bamboo pulping wastewater than g-C3N4, and this result was attributed to the reduced complexation of photogenerated electron–hole pairs and extended photogenerated electron lifetime. Overall, this research provides a new idea for constructing Z-scheme electron-transfer heterojunctions. ? 2024 Elsevier B.V.