Improved gas-sensitive properties for ethanol and acetone in Zn-doped CoTiO3 nanoparticles

Appropriate element doping is an important means to improve gas response. Pure and Zn-doped CoTiO 3 nanoparticles were fabricated by a simple sol–gel method and their gas response to ethanol and acetone was studied. Compared with pure CoTiO 3 nanoparticles, particle dispersion, specific surface area...

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Published in:Journal of materials science. Materials in electronics 2024-11, Vol.35 (33), p.2098, Article 2098
Main Authors: Zhang, Wenzhao, Han, Ruqu, Cheng, Bingjie, Xian, Yishu, Li, Hongbo, Xiang, Jun, Zhang, Yamei
Format: Article
Language:English
Subjects:
Acetone
Characterization and Evaluation of Materials
Chemistry and Materials Science
Defects
Doping
Ethanol
Irregular particles
Materials Science
Nanoparticles
Operating temperature
Optical and Electronic Materials
Oxygen
Sensitivity
Sol-gel processes
Synergistic effect
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container_title Journal of materials science. Materials in electronics
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creator Zhang, Wenzhao
Han, Ruqu
Cheng, Bingjie
Xian, Yishu
Li, Hongbo
Xiang, Jun
Zhang, Yamei
description Appropriate element doping is an important means to improve gas response. Pure and Zn-doped CoTiO 3 nanoparticles were fabricated by a simple sol–gel method and their gas response to ethanol and acetone was studied. Compared with pure CoTiO 3 nanoparticles, particle dispersion, specific surface area, oxygen vacancy defects, and gas-sensitive properties of Zn-doped CoTiO 3 nanoparticles are optimized and improved. With the increase of Zn doping concentration, the aggregates composed of irregular nanoparticles disperse loosely and the oxygen vacancy defects on the CoTiO 3 nanoparticles’ surface accordingly increase. The optimum operating temperature of Zn-doped CoTiO 3 nanoparticles is slightly reduced from 286 to 260 °C. CoTiO 3 nanoparticles with Zn doping concentration of 0.05 especially show excellent gas-sensing properties. The sensitivities of Co 0.95 Zn 0.05 TiO 3 nanoparticles to 50 ppm ethanol and acetone are as high as 125.8 and 143.4, increased to 1.98 and 1.74 times higher than those of pure CoTiO 3 nanoparticles. The linear fitting of logarithmic relationship between sensitivity and concentration shows that Zn-doped CoTiO 3 can accurately detect low concentration (
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subjects Acetone
Characterization and Evaluation of Materials
Chemistry and Materials Science
Defects
Doping
Ethanol
Irregular particles
Materials Science
Nanoparticles
Operating temperature
Optical and Electronic Materials
Oxygen
Sensitivity
Sol-gel processes
Synergistic effect
title Improved gas-sensitive properties for ethanol and acetone in Zn-doped CoTiO3 nanoparticles
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