DataVXACS Applied Nano MaterialsPaper
journal article·2024-09-27

Hierarchical Heterojunction Microrods of MgO/Co3O4/ZnO for Enhanced Conductometric Detection of Ethylene Glycol

Chen Su, Yuanzhang Wang, Shuai Zhang, Mingyu Li, Weiwei Wu, Peipei Li, Lu Zhang

ACS Applied Nano Materials· Volume 7· Issue 18
Publisher page
Source abstract

Abstract

Morphology modulation and heterojunction construction are two efficacious strategies for developing high-performance gas sensors using metal oxide semiconductors. This study proposes a hierarchical MgO/Co 3 O 4 /ZnO hybrid structure for conductometric ethylene glycol gas sensing, achieved by fine-tuning the Co/Zn proportions in p–n heterojunction composites. The constructed ethylene glycol gas sensor, based on the hierarchical MgO/Co 3 O 4 /ZnO heterostructure, exhibits exceptional gas sensing capabilities with a Co/Zn feeding molar ratio of 4:1, manifesting a maximum response of 7.8–50 ppm of ethylene glycol at 125 °C. The noteworthy augmentation in ethylene glycol sensing performance is attributed to the synergistic effects of both n–n and p–n heterojunctions, along with the maximized surface area derived from the optimized feeding molar ratio of Co/Zn. The discerned findings of this study are poised to stimulate the innovation of prospective sensing materials for high-performance gas sensors.
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Research context

Electronic materialsComposites

OpenAlex topics: Gas Sensing Nanomaterials and Sensors · Analytical Chemistry and Sensors · Acoustic Wave Resonator Technologies

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

Affiliations

Interdisciplinary Research Center of Smart Sensors, Shaanxi Key Laboratory of High-Orbits-Electron Materials and Protection Technology for Aerospace, School of Advanced Materials and Nanotechnology, Xidian University, Xi’an, Shaanxi 710126, China

State Key Laboratory of Electromechanical Integrated Manufacturing of High-performance Electronic Equipment, Xidian University, Xi’an, Shaanxi 710126, China

Key Laboratory of Artificial Olfaction of Shaanxi Higher Education Institutes, Xidian University, Xi’an, Shaanxi 710126, China

Funding

Ministry of Education of the People's Republic of China · Natural Science Basic Research Program of Shaanxi Province · Fundamental Research Funds for the Central Universities · National Natural Science Foundation of China · Key Research and Development Projects of Shaanxi Province

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