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Enhanced visible light photocatalytic activity in N-doped edge- and corner-truncated octahedral Cu2O
Zou, Mingming1; Liu, Honghong1; Feng, Lu1; Thomas, Tiju2; Yang, Minghui1
KeywordMorphology Control Of Cu2o Ammonothermal Processing n Doping Visible Light Photoactivity
Source PublicationSOLID STATE SCIENCES
2017-03-01
ISSN1293-2558
DOI10.1016/j.solidstatesciences.2016.12.021
Volume65Pages:22-28
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Inorganic & Nuclear ; Chemistry, Physical ; Physics, Condensed Matter
WOS Research AreaChemistry ; Physics
WOS KeywordSUPERCAPACITOR ELECTRODES ; NANOCRYSTALS ; TIO2 ; PERFORMANCE ; EVOLUTION ; CATALYSTS
AbstractEdge- and corner-truncated octahedral Cu2O is successfully synthesized using an aqueous mixture of CuCl2, sodium dodecyl sulfate, NaOH, and NH2OH3 center dot HCI. Cu2O1-xNx(150 degrees C, 30 min) samples are synthesized by nitridation of Cu2O using an ammonotherinal process. Cu retains a formal valence state through and beyond the nitridation process. N concentration in this sample is 1.73 at%, out of which 1.08 at% is substitutional in nature. Photocatalytic activity of Cu2O1-xNx(150 degrees C, 30 min) sample is investigated and compared to that of pristine edge- and corner-truncated octahedral Cu2O. Results show that Cu2O1-xNx(150 degrees C, 30 min) sample with dominant {110} facets has a higher photocatalytic activity than the pristine Cu2O material. Higher surface energy and a greater density of the "Cu" dangling bonds on {110} facets of edge- and corner-truncated octahedral Cu2O1-xNx is the plausible reason for the observed optimum catalytic activity. Furthermore defect states induced by nitridation results in improved visible light adsorption. And also the band edge states changes which brought about by N doping. This is an interesting result since it bypasses the usual challenge faced by pristine Cu2O which have band edge states between which transitions are normally forbidden. Selective radical quenching experiments suggest that photocatalytic activity of Cu2O1-xNx is due to formation of hydroxyl radicals in water, subsequent to photogeneration of charge carriers in the photocatalyst. (C) 2017 Elsevier Masson SAS. All rights reserved.
Language英语
WOS IDWOS:000395615700004
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/169377
Collection中国科学院大连化学物理研究所
Corresponding AuthorThomas, Tiju; Yang, Minghui
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, 457 Zhongshan Rd, Dalian 116023, Peoples R China
2.Indian Inst Technol, Dept Met & Mat Engn, Madras 600036, Tamil Nadu, India
Recommended Citation
GB/T 7714
Zou, Mingming,Liu, Honghong,Feng, Lu,et al. Enhanced visible light photocatalytic activity in N-doped edge- and corner-truncated octahedral Cu2O[J]. SOLID STATE SCIENCES,2017,65:22-28.
APA Zou, Mingming,Liu, Honghong,Feng, Lu,Thomas, Tiju,&Yang, Minghui.(2017).Enhanced visible light photocatalytic activity in N-doped edge- and corner-truncated octahedral Cu2O.SOLID STATE SCIENCES,65,22-28.
MLA Zou, Mingming,et al."Enhanced visible light photocatalytic activity in N-doped edge- and corner-truncated octahedral Cu2O".SOLID STATE SCIENCES 65(2017):22-28.
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