Single-atom Pt anchored In_(2)O_(3)nanorods for sensitive acetone detection using early fire warningOA
The development of high-performance gas sensors is crucial for applications in environmental monitoring,public safety,and healthcare.However,existing analytical techniques are often limited by high costs and operational complexity.In_(2)O_(3)semiconductors exhibit great potential,while their practical application is hindered by inherent issues such as sensitivity and selectivity.Herein,we synthesized In_(2)O_(3)with oxygen vacancies(In_(2)O_(3)-L)and anchored Pt single atoms,enabling real-time detection of lowconcentration acetone.The In_(2)O_(3)-L-Pt sensor demonstrated a 5-fold improvement in response to 20 ppm acetone at 220℃ compared to In_(2)O_(3),exhibiting rapid response/recovery time(2/30 s),ultra-low theoretical detection limits,excellent selectivity,and outstanding long-term stability.Experimental and theoretical results indicated that Pt single atoms enhanced adsorption and reduced activation energy barrier.Importantly,the Pt induced an internal electric field,increasing the thickness of the electron depletion layer(EDL),thereby amplifying the electrical response.This work demonstrates the potential of single-atom engineering to overcome the limitations of metal oxide sensors and presentes a new approach for designing next-generation portable sensing devices.Moreover,the sensor demonstrates practical application potential,as shown in simulated automotive fire-warning scenarios.
Jingmin Ge;Zhichuang Ma;Jingfang Ji;Ruipeng Wang;Hao Gao;Kaihang Sun;Pan Liu;Guochen Qi;Ronghan Wei
School of Mechanics and Safety Engineering,Henan Province Engineering Technology Research Center of MEMS Manufacturing and Applications,Industrial Technology Research Institute,Zhengzhou University,Zhengzhou 450001,ChinaSchool of Mechanics and Safety Engineering,Henan Province Engineering Technology Research Center of MEMS Manufacturing and Applications,Industrial Technology Research Institute,Zhengzhou University,Zhengzhou 450001,ChinaKey Laboratory of Automotive Power Train and Electronic Control,Hubei University of Automotive Technology,Shiyan 442002,ChinaSchool of Mechanics and Safety Engineering,Henan Province Engineering Technology Research Center of MEMS Manufacturing and Applications,Industrial Technology Research Institute,Zhengzhou University,Zhengzhou 450001,ChinaSchool of Mechanics and Safety Engineering,Henan Province Engineering Technology Research Center of MEMS Manufacturing and Applications,Industrial Technology Research Institute,Zhengzhou University,Zhengzhou 450001,ChinaCollege of Chemistry,Zhengzhou University,Zhengzhou 450001,ChinaSchool of Mechanics and Safety Engineering,Henan Province Engineering Technology Research Center of MEMS Manufacturing and Applications,Industrial Technology Research Institute,Zhengzhou University,Zhengzhou 450001,ChinaSchool of Mechanics and Safety Engineering,Henan Province Engineering Technology Research Center of MEMS Manufacturing and Applications,Industrial Technology Research Institute,Zhengzhou University,Zhengzhou 450001,ChinaSchool of Mechanics and Safety Engineering,Henan Province Engineering Technology Research Center of MEMS Manufacturing and Applications,Industrial Technology Research Institute,Zhengzhou University,Zhengzhou 450001,China
信息技术与安全科学
metal oxide sensorsIn_(2)O_(3)single atomshigh selectivityfire-warning scenarios
《Nano Research》 2026 (3)
P.1034-1043,10
supported by the National Natural Science Foundation of China(Nos.22508367 and 52171193)China Postdoctoral Science Foundation(No.2024M762994)High-end Foreign Experts Recruitment Program of Henan Province(No.HNGD2023001)High-end Foreign Experts Recruitment Program of China(No.G2023026020L)Key Research and Development Program of Henan Province(No.241111220400)the Plan for Zhongyuan Scientific Innovation Postdoctoral Talent of Henan Province(No.33220054)the Key Laboratory of Automotive Power Train and Electronics(Hubei University of Automotive Technology)(No.2015XTZX0430).
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