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Journal of Materials Chemistry C Vol - 4 Issue - 39

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Preparation of quantum dots from MoO₃ nanosheets by UV irradiation and insight into morphology changes

Content Provider	Royal Society of Chemistry (RSC)
Author	Peng, Ping Lu, Xiaolong Jiao, Weicheng Zhang, Jian Yang, Fan Hao, Lifeng Wang, Rongguo Liu, Wenbo
Copyright Year	2016
Abstract	After UV irradiation of orthorhombic molybdenum trioxide (α-MoO3) nanosheets dispersed in two different solvents including water/ethanol mixed solvents and individual N-methyl-2-pyrrolidinone (NMP), we observed remarkable but distinct morphology changes in combination with different photochromic phenomena. MoO3−x quantum dots (QDs) with both different sizes and oxygen vacancy concentrations could be acquired through this facile and efficient method. The consumption of photoexcited holes played an important role in the morphology changes. In water/ethanol, intercalation of H+ originating from the oxidation of water by photoholes contributes to the acquisition of QDs. While in NMP, we provided a new insight and proved that photocorrosion induced by accumulated holes was responsible for the morphology evolution and acquisition of QDs.
Starting Page	11449
Ending Page	11456
Page Count	8
File Format	HTM / HTML PDF
ISSN	20507526
Volume Number	4
Issue Number	48
Journal	Journal of Materials Chemistry C
DOI	10.1039/c6tc04006c
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	NMP Orthorhombic crystal system Ethanol Photochromism Quantum Oxygen Hydrogen
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry

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