Hydrothermally synthesized CeO2 nanowires for H2S sensing at room temperature

JOURNAL OF ALLOYS AND COMPOUNDS

卷:682

Article

Li, Zhijie¹  Niu, Xinyue¹  Lin, Zhijie¹  Wang, Ningning¹  Shen, Huahai¹  Liu, Wei¹  Sun, Kai²  Fu, Yong Qing^1,3  Wang, Zhiguo¹ 

[1] Univ Elect Sci & Technol China, Sch Phys Elect, Chengdu 610054, Peoples R China

[2] Univ Michigan, Dept Nucl Engn & Radiol Sci, Ann Arbor, MI 48109 USA

[3] Northumbria Univ, Dept Phys & Elect Engn, Fac Engn & Environm, Newcastle Upon Tyne NE1 8ST, Tyne & Wear, England

关键词: CeO2;    Nanowires;    Hydrothermal;    Sensitivity;    Gas sensor;   

DOI  :  10.1016/j.jallcom.2016.04.311

来源: Elsevier

【 摘 要 】

CeO2 nanowires were synthesized using a facile hydrothermal process without any surfactant, and their morphological, structural and gas sensing properties were systematically investigated. The CeO2 nanowires with an average diameter of 12.5 nm had a face-centered cubic fluorite structure and grew along [111] of CeO2. At the room temperature of 25 degrees C, hydrogen sulfide (H2S) gas sensor based on the CeO2 nanowires showed excellent sensitivity, low detection limit (50 ppb), and short response and recovery time (24 s and 15 s for 50 ppb H2S, respectively). (C) 2016 Elsevier B.V. All rights reserved.

【 授权许可】

Free