Novel approaches for highly selective, room-temperature gas sensors based on atomically dispersed non-precious metals

doi:10.1039/d0ta05775d

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	Novel approaches for highly selective, room-temperature gas sensors based on atomically dispersed non-precious metals
	Tian, RB ; Wang, SY ; Hu, XF ; Zheng, JG ; Ji, P ; Lin, J ; Zhang, J ; Xu, MJ ; Bao, J ; Zuo, SW
刊名	JOURNAL OF MATERIALS CHEMISTRY A
	2020
卷号	8 期号:45 页码:23784-23794
关键词	SINGLE-ATOM CATALYST OXYGEN EVOLUTION REACTION NITROGEN-DIOXIDE GRAPHENE OXIDE CARBON NANOTUBE CHARGE-TRANSFER NO2 DETECTION SEMICONDUCTOR FILM SENSITIVITY
ISSN号	2050-7488
DOI	10.1039/d0ta05775d
文献子类	期刊论文
英文摘要	Atomically dispersed (AD) materials have incredible catalytic ability and offer atom economy with 100% metal utilization during catalytic reactions. Herein, we report the first attempt to synthesize AD FeNC materials for use as highly selective, room-temperature gas sensors. Aberration-corrected high-angle annular dark-field scanning transmission electron microscopy (AC-HAADF-STEM), extended X-ray absorption fine structure (EXAFS) spectroscopy, and Mossbauer spectroscopy characterization methods confirm the existence of atomically dispersed Fe with an FeN4 coordination. We demonstrate a room temperature, sensitive, and selective NO2 gas sensor technology using this platform, offering significant advantages over existing technology. Density functional theory (DFT) calculations verify that electrons are transferred to NO2 from FeN4 during NO2 adsorption. Both DFT calculations and experiments also reveal that the barrier for NO2 decomposition by AD FeNC is 0.73 eV, which is significantly lower than previously reported barriers (2.60-3.54 eV) in other materials. Such unique catalytic properties combined with a high surface affinity for NO2 molecules enable AD FeNC gas sensors to have excellent selective NO2 detection at room temperature. The method proposed here can inspire the use of AD materials to detect other gases and catalyze similar novel developments in the gas sensor industry.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/33036]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Key Lab Surface & Interface Chem & Energy Catalys, Hefei 230029, Peoples R China 2.Chinese Acad Sci, Beijing Synchrotron Radiat Facil, Inst High Energy Phys, Beijing 100049, Peoples R China 3.Xi An Jiao Tong Univ, Sch Sci, Dept Mat Phys, Xian 710049, Peoples R China 4.Dongguan Univ Technol, Sch Elect Engn & Intelligentizat, Dongguan 523808, Peoples R China 5.Southeast Univ, Sch Phys, Nanjing 211189, Peoples R China 6.Hefei Univ Technol, Sch Instrument Sci & Optoelect Engn, Res Ctr Sensor Sci & Technol, Special Display & Imaging Technol Innovat Ctr Anh, Hefei 230009, Peoples R China 7.Univ Calif Irvine, Irvine Mat Res Inst, Irvine, CA USA 8.Chinese Acad Sci, Key Lab Interfacial Phys & Technol, Shanghai Inst Appl Phys, Shanghai, Peoples R China 9.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Tian, RB,Wang, SY,Hu, XF,et al. Novel approaches for highly selective, room-temperature gas sensors based on atomically dispersed non-precious metals[J]. JOURNAL OF MATERIALS CHEMISTRY A,2020,8(45):23784-23794.
APA	Tian, RB.,Wang, SY.,Hu, XF.,Zheng, JG.,Ji, P.,...&Yu, LD.(2020).Novel approaches for highly selective, room-temperature gas sensors based on atomically dispersed non-precious metals.JOURNAL OF MATERIALS CHEMISTRY A,8(45),23784-23794.
MLA	Tian, RB,et al."Novel approaches for highly selective, room-temperature gas sensors based on atomically dispersed non-precious metals".JOURNAL OF MATERIALS CHEMISTRY A 8.45(2020):23784-23794.