Synthesis of carbon microsphere-assisted snowflake-like ZnO nanomaterials for selective detection of NO2 at room temperature

被引：12
|
作者：
Li, Qiaoyan [1 ]
Cui, Yahan [1 ]
Lin, Jiasheng [1 ]
Zhao, Chun [2 ]
Ding, Lan [1 ]
机构：
[1] Jilin Univ, Coll Chem, Dept Analyt Chem, 2699 Qianjin St, Changchun 130012, Peoples R China
[2] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Peoples R China
来源：
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2022年 / 110卷
基金：
中国国家自然科学基金;
关键词：
Snowflake-like ZnO; Carbon microsphere; Nitrogen dioxide; Gas sensing; Room-temperature; GAS-SENSING PROPERTIES; HYDROTHERMAL SYNTHESIS; SHELL NANOSPHERES; NITROGEN-DIOXIDE; FACILE SYNTHESIS; PERFORMANCE; SENSOR; NANOCOMPOSITES; GRAPHENE; NANORODS;
D O I：
10.1016/j.jiec.2022.03.032
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In this paper, the snowflake-like ZnO nanomaterials were prepared by combining zinc salt impregnation and high-temperature calcination with carbon microspheres as the sacrificial template. The effects of ethanol concentration in aqueous solution on the microstructure and sensing properties of ZnO nanomaterials were investigated. The results showed that using 25 % ethanol-containing aqueous solution as impregnation solution, snowflake-like ZnO nanomaterials (ZnO-25) showed excellent sensing performance for NO2 at room temperature. It is mainly attributable to the rich channels and large specific surface area of the snowflake-like ZnO, which facilitates the rapid diffusion of the target gas. A large amount of chemisorbed oxygen can promote the surface reaction. In addition, the unremoved carbon during calcination promotes the electrical properties of ZnO. This strategy will provide a new sight on developing a type of sensitive NO2 gas sensing device working at room temperature. (C) 2022 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：542 / 551
页数：10
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