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Updated: Feb 12, 2026

Preparation of Binary and Ternary Deep Eutectic Systems
Published on: October 31, 2019
Characteristics of binary WO3@CuO and ternary WO3@PDA@CuO based on impressive sensing acetone odor
Fuchao Yang1, Fengyi Wang1, Zhiguang Guo2
1Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials and Hubei Key Laboratory of Polymer Materials, Hubei University, Wuhan 430062, People's Republic of China.
Abstract:
A series of biomimetic electronic nose nanomaterials of WO3, WO3@PDA, WO3@PDA@CuO, WO3@CuO and CuO were prepared by a facile method and their microstructures, surface chemical composition and sensing ability for acetone odor were investigated systematically by a variety of technologies. The WO3@PDA@CuO and WO3@CuO particles are in nano-sized shape, about 20 nm. The sensing ability to different concentrations acetone odor (50, 100 and 200 ppm) is addressed. The effect of different sensitivity definitions (Rg/Ra or |Ra - Rg|/Ra × 100%) on the comparison of experiment results is discussed. The WO3@CuO sensing material shows the best sensing performance of all the sensors, being independent of concentration or sensitivity definitions. These results provide novel insights into the design and preparation of composite electronic nose sensing nanomaterials.
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