CAS OpenIR  > 多相复杂系统国家重点实验室
Facet-dependent gas sensing properties of Cu2O crystals
Xie, Zheng1,2; Han, Ning2,3; Li, Wenhui2; Deng, Yuzhou2; Gong, Shuyan2; Wang, Ying2; Wu, Xiaofeng2; Li, Yingxia1,2; Chen, Yunfa2,3
2017-06-01
发表期刊PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
ISSN1862-6300
卷号214期号:6
摘要Well-defined polyhedral Cu2O exposing different crystal facets are synthesized via a facile solution-phase method, and the facet-dependent gas sensing properties are investigated. The results show that cubic Cu2O exposing (100) facets has higher sensitivity to NO2, acetone and benzene than octahedral Cu2O with (111) facets. More importantly, the cubic Cu2O has high selectivity to NO2 and acetone at varied working temperatures by different sensing mechanisms of adsorption, chemical reaction, and intrinsic carrier excitation, as verified by the catalytic and electric property measurements. The higher sensitivity and selectivity of cubic Cu2O is explained by the relatively lower work function of (100) surfaces than that of (111), which induces a thicker surface hole accumulation layer and thus, a higher bulk hole activation energy (0.55eV and 0.36eV respectively). The synergistic effect of catalytic and electric properties gives rise to gas sensitivity decrease with the reduced percentage of (111) facets, which is beneficial to the gas sensing material design and also, is promising for the future highly sensitive and selective gas sensor fabrication.
关键词Catalysis Crystal Facets Cu_2o Gas Sensing Surfaces Work Function
文章类型Article
WOS标题词Science & Technology ; Technology ; Physical Sciences
DOI10.1002/pssa.201600904
收录类别SCI
语种英语
关键词[WOS]ELECTRICAL-CONDUCTIVITY PROPERTIES ; CATALYTIC-ACTIVITIES ; ROOM-TEMPERATURE ; SHAPE EVOLUTION ; NANOCRYSTALS ; SENSITIZATION ; FORMALDEHYDE ; PERFORMANCE ; REDUCTION ; NANOWIRES
WOS研究方向Materials Science ; Physics
WOS类目Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
项目资助者National Key Research and Development Program(2016YFC0207101) ; National Natural Science Foundation of China(51272253) ; State Key Laboratory of Multiphase Complex Systems(MPCS-2014-C-01)
WOS记录号WOS:000403339900014
引用统计
被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/22630
专题多相复杂系统国家重点实验室
作者单位1.Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, North Third Ring Rd 15, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, North Second St 1, Beijing 100190, Peoples R China
3.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Reg Atmospher Environm, Jimei Ave 1799, Xiamen 361021, Peoples R China
推荐引用方式
GB/T 7714
Xie, Zheng,Han, Ning,Li, Wenhui,et al. Facet-dependent gas sensing properties of Cu2O crystals[J]. PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE,2017,214(6).
APA Xie, Zheng.,Han, Ning.,Li, Wenhui.,Deng, Yuzhou.,Gong, Shuyan.,...&Chen, Yunfa.(2017).Facet-dependent gas sensing properties of Cu2O crystals.PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE,214(6).
MLA Xie, Zheng,et al."Facet-dependent gas sensing properties of Cu2O crystals".PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE 214.6(2017).
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Xie, Zheng]的文章
[Han, Ning]的文章
[Li, Wenhui]的文章
百度学术
百度学术中相似的文章
[Xie, Zheng]的文章
[Han, Ning]的文章
[Li, Wenhui]的文章
必应学术
必应学术中相似的文章
[Xie, Zheng]的文章
[Han, Ning]的文章
[Li, Wenhui]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。