Preparation and enhanced acetone sensing property of flower-like Sn-doped Fe2O3

被引：8
作者：
Xia, Qian [1 ]
Gu, Cuiping [1 ]
Xie, Xingxing [1 ]
Ren, Haibo [2 ]
Joo, Sang Woo [3 ]
Huang, Jiarui [1 ]
机构：
[1] Anhui Normal Univ, Coll Chem & Mat Sci, Anhui Lab Mol Based Mat, Key Lab Funct Mol Solids,Minist Educ, Wuhu 241002, Anhui, Peoples R China
[2] Anhui Polytech Univ, Modern Technol Ctr, Sch Mat Sci & Engn, Wuhu 241000, Anhui, Peoples R China
[3] Yeungnam Univ, Sch Mech Engn, Gyongsan 38541, Gyeongbuk, South Korea
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2024年 / 399卷
基金：
新加坡国家研究基金会;
关键词：
Tin doping; Ferric oxide; Microflower; Acetone; Gas sensor; VOLATILE ORGANIC-COMPOUNDS; GAS SENSOR; ALPHA-FE2O3; PERFORMANCE; NANOPARTICLES; FABRICATION; NANOSHEETS; HETEROSTRUCTURE; NANOSTRUCTURE; SEMICONDUCTOR;
D O I：
10.1016/j.snb.2023.134874
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Metal oxide semiconductor (MOS) nanostructures are used widely in acetone sensors, but pure MOS sensors usually have poor selectivity and low sensitivity. In this study, various Sn-doped Fe2O3 (Sn-Fe2O3) microflowers were obtained using FeOOH microflowers as precursors using a liquid hydrolysis reaction followed by a calci-nation process. Various characterization techniques verified the morphologies and composition of the products. The microflower-like 17.0 wt% Sn-Fe2O3 possessed a specific surface area of 138.9 m2 g-1. Employed as a sensing material, the 17.0 wt% Sn-Fe2O3 microflowers exhibited a strong response of 107.7 for 100 ppm acetone with short response/recovery times of 8/12 s. Furthermore, the 17.0 wt% Sn-Fe2O3 microflower sensor displayed good selectivity and high stability for acetone vapor with a detection limit of 114 ppb. The in-situ Raman spectrum verified that the Sn-Fe2O3 microflowers improved the adsorption of the acetone molecules, resulting in enhanced sensing performance.
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页数：11
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