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Ultrasensitive and selective CuAlO2 sensor toward H2S based on surface sulfuration-desulfuration reaction

文献类型：期刊论文

作者Tong, Bin1,4,5,6; Deng, Zanhong1,4,5; Megn, Gang1,4,5; Chang, Junqing4,5,6; Lu, Yan3,7; Qi, Lingli4,5,6; Shan, Xueyan4,5,6; Shao, Jingzhen1,4,5; Wang, Shimao1,4,5; Shen, Chengyin3,7
刊名SENSORS AND ACTUATORS B-CHEMICAL
出版日期2020-06-15
卷号313
关键词Delafossite CuAlO2 H2S sensor Operando spectroscopy Selectivity
DOI10.1016/j.snb.2020.128027
通讯作者Megn, Gang(menggang@aiofm.ac.cn) ; Fang, Xiaodong(xdfang@aiofm.ac.cn)
英文摘要Exploring novel sensing materials with extraordinary specificity/selectivity is essential to construct artificial gas molecules recognition chips (sensor arrays) for future environment and health monitoring. Herein, we reported the excellent H2S sensing properties of a p-type delafossite CuAlO2 sensor. Without complex size, morphology or defect control procedures, irregularly shaped CuAlO2 particles (size ranging from tens of nm to several mu m) synthesized by a simple sol-gel route, exhibit an ultrahigh response (4600) toward (10 ppm) H2S molecules at 160 degrees C. Tiny responses (< 2) toward (100 ppm) NH3, NO2 and diverse volatile organic compounds (VOCs) molecules indicate an excellent selectivity. In addition to well-known surface oxygen involved gas/oxide charge interaction, quasi-operando spectroscopy (combing XPS, Raman, GC-MS, UPS etc.) analyzing suggests the surface sulfuration of CuAlO2 (S:CuAlO2 possessing a higher EV position than CuAlO2), which would act as a chemically switched 'gate' and effectively modulate the resistance of sensing channel, and thus contributes ultrahigh electrical response toward H2S. The reversible S doping-detaching and unique S:CuAlO2/CuAlO2 band alignment make delafossite CuAlO2 as an alternative novel H2S sensor with fantastic response and selectivity, and open up new opportunities for future applications.
WOS关键词GAS SENSORS ; PPB-LEVEL ; PERFORMANCE ; NANOSHEETS ; MICROSPHERES ; FILMS ; SIZE ; SNO2
资助项目CAS Pioneer Hundred Talents Program from Chinese Academy of Sciences ; National Natural Science Foundation of China[11674324] ; National Natural Science Foundation of China[11604339] ; CAS-JSPS Joint Research Projects[GJHZ1891]
WOS研究方向Chemistry ; Electrochemistry ; Instruments & Instrumentation
语种英语
WOS记录号WOS:000526287200029
出版者ELSEVIER SCIENCE SA
资助机构CAS Pioneer Hundred Talents Program from Chinese Academy of Sciences ; National Natural Science Foundation of China ; CAS-JSPS Joint Research Projects
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/103693]  
专题中国科学院合肥物质科学研究院
通讯作者Megn, Gang; Fang, Xiaodong
作者单位1.Adv Laser Technol Lab Anhui Prov, Hefei 230037, Peoples R China
2.Shenzhen Technol Univ, Sino German Coll Intelligent Mfg, Shenzhen 518118, Peoples R China
3.Chinese Acad Sci, Hefei Canc Hosp, Dept Pharm, Hefei 230031, Peoples R China
4.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Anhui Prov Key Lab Photon Devices & Mat, Hefei 230031, Peoples R China
5.Chinese Acad Sci, Key Lab Photovolta & Energy Conservat Mat, Hefei 230031, Peoples R China
6.Univ Sci & Technol China, Hefei 230026, Peoples R China
7.Chinese Acad Sci, Ctr Med Phys & Technol, Hefei Inst Phys Sci, Anhui Prov Key Lab Med Phys & Technol, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Tong, Bin,Deng, Zanhong,Megn, Gang,et al. Ultrasensitive and selective CuAlO2 sensor toward H2S based on surface sulfuration-desulfuration reaction[J]. SENSORS AND ACTUATORS B-CHEMICAL,2020,313.
APA Tong, Bin.,Deng, Zanhong.,Megn, Gang.,Chang, Junqing.,Lu, Yan.,...&Fang, Xiaodong.(2020).Ultrasensitive and selective CuAlO2 sensor toward H2S based on surface sulfuration-desulfuration reaction.SENSORS AND ACTUATORS B-CHEMICAL,313.
MLA Tong, Bin,et al."Ultrasensitive and selective CuAlO2 sensor toward H2S based on surface sulfuration-desulfuration reaction".SENSORS AND ACTUATORS B-CHEMICAL 313(2020).

入库方式： OAI收割

来源：合肥物质科学研究院

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