DataVXACS Applied Nano MaterialsPaper
journal article·2023-05-26

Expanding Selectivity Functionality of a ZnO Nanotetrapod-Based Volatile Organic Compound Sensor Using Au Nanoparticle Decoration

Fang Xu, Wen Li, Shuai Sun, Aihua Zhong, Xuelan Cheng, Jidong Shi, Zeren Li, Jia Li, Wei Zhang, Xiaohu Wang, Yujie Ma, Aaron Ho-Pui Ho

ACS Applied Nano Materials· Volume 6· Issue 10
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Source abstract

Abstract

Gas sensors with multiselectivity are drawing increasing attention and sensors with temperature-tuned dual selectivity have been developed. Because Au nanoparticles (NPs) can lower the activation barrier for sensing reactions, herein, Au NP decoration was used to expand the selectivity range of a ZnO nanotetrapod (NTP)-based sensor. A temperature-tuned triselectivity sensor based on Au NP–ZnO NTPs was developed. The sensor exhibited enhanced selectivity for formaldehyde when the operation temperature was <200 °C, ethanol when the operation temperature was between 200 and 340 °C, and acetone when the operation temperature was >400 °C. Additionally, Au NP decoration increased the magnitude of response and decreased the optimal detection temperature of the sensor. This work demonstrates that Au NP decoration is an efficient approach for improving the performance of semiconductor-based gas sensors with temperature-tunable selectivity.
Source: openalex_inverted_index · Quality: baseline

Research context

NanomaterialsElectronic materials

OpenAlex topics: Gas Sensing Nanomaterials and Sensors · Advanced Chemical Sensor Technologies · Analytical Chemistry and Sensors

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology, Center for Advanced Material Diagnostic Technology, and College of Engineering Physics, Shenzhen Technology University, Shenzhen 518118, China

College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, P.R. China

Department of Biomedical Engineering, The Chinese University of Hong Kong, N.T., Shatin, Hong Kong Special Administrative Region

Funding

Guangdong Science and Technology Department · Shenzhen Technology University · Shenzhen Fundamental Research Program · National Natural Science Foundation of China · Guangdong Key Construction Discipline Research Capacity Enhancement Project · Shenzhen Outstanding Scientific and Technological Innovation Talent Training Project · Shenzhen Science and Technology Program

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