文献类型：期刊文献

英文题名：Facile Fabrication of Amorphous Molybdenum Oxide as a Sensitive and Stable SERS Substrate under Redox Treatment

作者：Ma, Jiayu[1,2];Tan, Xianjun[3];Ma, Yunfei[1,2];Yao, Xinyun[1,2];Zhang, Jinlong[1,2];Wang, Lingzhi[1,2]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Mat, Inst Fine Chem, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Inst Fine Chem, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]Tsinghua Univ, Tsinghua Berkeley Shenzhen Inst, Shenzhen 518055, Peoples R China

年份：2020

卷号：26

期号：12

起止页码：2653

外文期刊名：CHEMISTRY-A EUROPEAN JOURNAL

收录：;EI(收录号：20200508108760);WOS:【SCI-EXPANDED(收录号:WOS:000508756600001)】；

基金：This work was supported by the National Natural Science Foundation of China (21673073, 21677048 and 5171101651), Shanghai Municipal Science and Technology Major Project (2018SHZDZX03), the Programme of Introducing Talents of Discipline to Universities (B16017), Shanghai Municipal Science and Technology (16JC1401400, 17520711500) and the Fundamental Research Funds for the Central Universities and the Fundamental Research Funds for the Central Universities (222201717003).

语种：英文

外文关键词：amorphous materials; nanoparticles; photocatalysts; photochemistry; Raman spectroscopy

摘要：Amorphous MoO3-x nanosheets were fabricated by the room-temperature oxidation of molybdenum powder with H2O2, followed by light-irradiation reduction in methanol. When applied as a substrate for surface-enhanced Raman spectroscopy (SERS), these nanosheets exhibit higher sensitivity than the crystalline counterpart for a wide range of analytes. Moreover, the SERS activity remains stable on repeated oxygen insertion/extraction. In contrast, the performance of crystalline MoO3-x continuously deteriorates on successive redox treatments. This unique SERS activity allows the recycling of the substrate through an H2O2-based Fenton-like reaction. More importantly, the non-invasive SERS was unprecedentedly used for the self-diagnosis of amorphous MoO3-x as a more selective photocatalyst than its crystalline counterpart.