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CuO nanoparticle loaded ZnO hierarchical heterostructure to boost H2S sensing with fast recovery

文献类型：期刊论文

作者Wang, Hong1,2; Luo, Yuanyuan2; Liu, Bo2; Gao, Lei2; Duan, Guotao3
刊名SENSORS AND ACTUATORS B-CHEMICAL
出版日期2021-07-01
卷号338
关键词Hierarchical heterostructures ZnO@CuO Hollow spheres array H2S gas Gas sensor
DOI10.1016/j.snb.2021.129806
通讯作者Luo, Yuanyuan(yyluo@issp.ac.cn) ; Duan, Guotao(duangt@hust.edu.cn)
英文摘要To achieve both sensitive and recoverable detection of H2S gas at low temperature, ZnO@CuO hierarchical heterostructures composed of porous hollow spheres array are in situ prepared through a template-assisted magnetron sputtering and subsequent annealing treatment. It was found that as the sputtering time of metal copper target is 40 s, the ZnO@CuO hierarchical heterostructure shows remarkably enhanced sensing response (Ra/Rg = 20.7) with short response/recovery time (33/298 s) toward 10 ppm (ppm) of H2S gas at a low operating temperature (25 ?C) compared with pristine ZnO and CuO sensing film. Such sensor exhibits a distinct response to an ultralow concentration of 20 parts per billion (ppb) H2S gas and possesses easy recovery even when the concentration of H2S gas increases to 100 ppm. Density functional theory (DFT) calculations reveal that H2S gas molecules tend to be adsorbed on the surface of ZnO@CuO hierarchical heterostructure compared with pristine ZnO. Moreover, the energy barrier for H2S decomposition on the heterostructure?s surface is 0.25 eV, indicating that this is a thermodynamically favorable reaction. Calculation and X-ray photoelectron spectroscopy analysis further revealed that the porous hierarchical heterostructure, p-n heterojunction at the interface, and intermediate CuS nanoparticles with small size are the major factors to enhance H2S gas sensing properties. Our work affords great potential for the development of high-performance gas sensors for H2S detection.
资助项目National Key R&D Program of China[2020YFB2008701] ; Natural Science Foundation of China[11674320] ; Natural Science Foundation of China[51771189] ; Natural Science Foundation for Young Scientists of China[51802309] ; Anhui Provincial Natural Science Foundation[1808085ME137] ; Post-doctoral innovative research post in Hubei Province[0106182068]
WOS研究方向Chemistry ; Electrochemistry ; Instruments & Instrumentation
语种英语
出版者ELSEVIER SCIENCE SA
WOS记录号WOS:000641350900002
资助机构National Key R&D Program of China ; Natural Science Foundation of China ; Natural Science Foundation for Young Scientists of China ; Anhui Provincial Natural Science Foundation ; Post-doctoral innovative research post in Hubei Province
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/122388]  
专题中国科学院合肥物质科学研究院
通讯作者Luo, Yuanyuan; Duan, Guotao
作者单位1.Univ Sci & Technol China, Hefei 230026, Peoples R China
2.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, HFIPS, Hefei 230031, Peoples R China
3.Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Hong,Luo, Yuanyuan,Liu, Bo,et al. CuO nanoparticle loaded ZnO hierarchical heterostructure to boost H2S sensing with fast recovery[J]. SENSORS AND ACTUATORS B-CHEMICAL,2021,338.
APA Wang, Hong,Luo, Yuanyuan,Liu, Bo,Gao, Lei,&Duan, Guotao.(2021).CuO nanoparticle loaded ZnO hierarchical heterostructure to boost H2S sensing with fast recovery.SENSORS AND ACTUATORS B-CHEMICAL,338.
MLA Wang, Hong,et al."CuO nanoparticle loaded ZnO hierarchical heterostructure to boost H2S sensing with fast recovery".SENSORS AND ACTUATORS B-CHEMICAL 338(2021).

入库方式： OAI收割

来源：合肥物质科学研究院

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