当前位置: X-MOL 学术Chem. Eur. J. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Facile Fabrication of Amorphous Molybdenum Oxide as a Sensitive and Stable SERS Substrate under Redox Treatment.
Chemistry - A European Journal ( IF 3.9 ) Pub Date : 2020-01-23 , DOI: 10.1002/chem.201904642
Jiayu Ma 1 , Xianjun Tan 2 , Yunfei Ma 1 , Xinyun Yao 1 , Jinlong Zhang 1 , Lingzhi Wang 1
Affiliation  

Amorphous MoO3-x nanosheets were fabricated by the room-temperature oxidation of molybdenum powder with H2 O2 , 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 H2 O2 -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.

中文翻译:

氧化还原处理下作为敏感而稳定的SERS衬底的无定形氧化钼的简便制备。

通过用H2 O2在室温下氧化钼粉,然后在甲醇中进行光辐照还原,制备出非晶态的MoO3-x纳米片。当将其用作表面增强拉曼光谱(SERS)的底物时,这些纳米片对多种分析物的敏感性要比结晶性对应物高。而且,SERS活性在反复的氧气插入/抽出后保持稳定。相反,在连续的氧化还原处理中,结晶MoO3-x的性能持续下降。这种独特的SERS活性可通过基于H2 O2的Fenton样反应回收底物。更重要的是,非侵入性SERS被史无前例地用于非晶态MoO3-x的自诊断,它比晶态MoO3-x更具选择性。
更新日期:2020-01-23
down
wechat
bug