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

doi:10.1016/j.snb.2020.128027

	Ultrasensitive and selective CuAlO2 sensor toward H2S based on surface sulfuration-desulfuration reaction
	Tong, Bin 2,3,4,5; Deng, Zanhong 2,3,5; Megn, Gang 2,3,5; Chang, Junqing 2,3,4; Lu, Yan 1,6; Qi, Lingli 2,3,4; Shan, Xueyan 2,3,4; Shao, Jingzhen 2,3,5; Wang, Shimao 2,3,5; Shen, Chengyin 1,6
刊名	SENSORS AND ACTUATORS B-CHEMICAL
	2020-06-15
卷号	313
关键词	Delafossite CuAlO2 H2S sensor Operando spectroscopy Selectivity
DOI	10.1016/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.
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关键词	GAS SENSORS ; PPB-LEVEL ; PERFORMANCE ; NANOSHEETS ; MICROSPHERES ; FILMS ; SIZE ; SNO2
WOS研究方向	Chemistry ; Electrochemistry ; Instruments & Instrumentation
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000526287200029
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
内容类型	期刊论文
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.Chinese Acad Sci, Hefei Canc Hosp, Dept Pharm, Hefei 230031, Peoples R China 2.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Anhui Prov Key Lab Photon Devices & Mat, Hefei 230031, Peoples R China 3.Chinese Acad Sci, Key Lab Photovolta & Energy Conservat Mat, Hefei 230031, Peoples R China 4.Univ Sci & Technol China, Hefei 230026, Peoples R China 5.Adv Laser Technol Lab Anhui Prov, Hefei 230037, Peoples R China 6.Chinese Acad Sci, Ctr Med Phys & Technol, Hefei Inst Phys Sci, Anhui Prov Key Lab Med Phys & Technol, Hefei 230031, Peoples R China 7.Shenzhen Technol Univ, Sino German Coll Intelligent Mfg, Shenzhen 518118, 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).