Superior gas-sensing performance of amorphous CdO nanoflake arrays prepared at room temperature

Zhang, Ye Qing, Li, Zhe, Ling, Tao, Kulinich, Sergei A. and Du, Xi-Wen (2016). Superior gas-sensing performance of amorphous CdO nanoflake arrays prepared at room temperature. Journal of Materials Chemistry A, 4 (22), pp. 8700-8706.

Abstract

Highly sensitive and selective detection of volatile organic compounds (VOCs) with fast response time is imperative based on safety requirements, yet often remains a challenge. Herein, we propose an effective solution, preparing a novel gas sensor comprised of amorphous nanoflake arrays (a-NFAs) with specific surface groups. The sensor was produced via an extremely simple process in which a-NFAs of CdO were deposited directly onto an interdigital electrode immersed in a chemical bath under ambient conditions. Upon exposure to a widely used VOC, diethyl ether (DEE), the sensor exhibits excellent performance, more specifically, the quickest response, lowest detection limit and highest selectivity ever reported for DEE as a target gas. The superior gas-sensing properties of the prepared a-NFAs are found to arise from their open trumpet-shaped morphology, defect-rich amorphous nature, and surface CO groups.

Publication DOI: https://doi.org/10.1039/c6ta01300g
Divisions: Engineering & Applied Sciences > Aston Institute of Photonics Technology
Additional Information: Funding: National Basic Research Program of China (2014CB931703); Natural Science Foundation of China (No. 51471115 and 51171127); and FP7 (FP7-PEOPLE-2012-IIF, project no. 330516).
Uncontrolled Keywords: Chemistry(all),Renewable Energy, Sustainability and the Environment,Materials Science(all)
Full Text Link: http://pubs.rsc ... 0G#!divAbstract
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
Published Date: 2016-06-14
Authors: Zhang, Ye Qing
Li, Zhe
Ling, Tao
Kulinich, Sergei A. ( 0000-0002-1365-9221)
Du, Xi-Wen

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