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

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: College of Engineering & Physical 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)
PURE Output Type: Article
Published Date: 2016-06-14
Published Online Date: 2016-04-29
Accepted Date: 2016-04-28
Submitted Date: 2016-02-12
Authors: Zhang, Ye Qing
Li, Zhe
Ling, Tao
Kulinich, Sergei A. (ORCID Profile 0000-0002-1365-9221)
Du, Xi-Wen

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