文献类型：期刊文献

英文题名：Efficient photothermal alcohol dehydration over a plasmonic W18O49 nanostructure under visible-to-near-infrared irradiation

作者：Zhang, Xueliang Luo, Dajun Liu, Yike Wang, Xin Hu, Huilin Ye, Jinhua Wang, Defa

第一作者：Zhang, Xueliang

通信作者：Wang, DF[1]

机构：[1]Guizhou Inst Technol, Sch Mat & Energy Engn, 1 Caiguan Rd, Guiyang 550003, Peoples R China;[2]Tianjin Univ, Sch Mat Sci & Engn, TJU NIMS Int Collaborat Lab, 92 Weijin Rd, Tianjin 300072, Peoples R China;[3]Natl Inst Mat Sci NIMS, Int Ctr Mat Nanoarchitecton WPI MANA, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan

第一机构：贵州理工学院

通信机构：corresponding author), Tianjin Univ, Sch Mat Sci & Engn, TJU NIMS Int Collaborat Lab, 92 Weijin Rd, Tianjin 300072, Peoples R China.

年份：2023

卷号：441

外文期刊名：JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY

收录：;EI(收录号：20235015206861);Scopus(收录号：2-s2.0-85151512453);WOS:【SCI-EXPANDED(收录号:WOS:001054362600001)】；

基金：Financial support by the National Natural Science Foundation of China (grant numbers 51572191, 21633004) , and the Guizhou Provincial Science and Technology Projects [QKHJC-ZK (2022) -General 189] is acknowledged.

语种：英文

外文关键词：Photothermal catalysis; Plasmonic semiconductor; Alcohol dehydration; Ethylene

摘要：Developing new techniques toward low-cost, high-efficiency, and environmental-friendly transformation of alcohol to hydrocarbon compounds via carbon-carbon coupling has been paid a lot of research attention. In this study, we report for the first time on photothermal alcohol dehydration over a plasmonic W18O49 nanostructure under visible-to-near-infrared (Vis-NIR) irradiation. In the case of methanol dehydration, dimethyl ether and ethylene are generated as the major products with a 75% of methanol conversion efficiency. The light source, especially the NIR part, plays an important role in activation of the target methanol molecules, favoring the photothermal catalysis for both the methanol conversion and ethylene selectivity. The methanol dehydration activity is also greatly improved with increasing the content of W5+ in the surface of W18O49. More importantly, the non-stoichiometric W18O49 catalyst can be self-remediated via the reduction of surface W6+ to W5+ by photoelectron and methanol. In addition to methanol dehydration, the W18O49 catalyst also exhibits an extremely high catalytic activity for photothermal ethanol dehydration with nearly 98% ethanol conversion and 100% ethylene selectivity under Vis-NIR irradiation. This work provides a new insight into the photothermal catalytic alcohol dehydration over plasmonic semiconductors.