The co-enhanced effect of Zn-doping and Ag-loading on the selectivity of a p-type Fe2O3 toward acetone

被引：4
作者：
Qin, Qixuan [1 ]
Liu, Na [1 ]
Zhang, Yan [1 ]
Bu, Weiyi [1 ]
Zhou, Zhijie [2 ]
Hu, Changhua [2 ]
Chuai, Xiaohong [1 ]
机构：
[1] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, 2699 Qianjin St, Changchun 130012, Peoples R China
[2] High Tech Inst Xian, Xian 710025, Shanxi, Peoples R China
来源：
NEW JOURNAL OF CHEMISTRY | 2023年 / 47卷 / 32期
基金：
中国国家自然科学基金;
关键词：
GAS SENSOR; SENSING PROPERTIES; DOPED IN2O3; NANOSPHERES; ALPHA-FE2O3/TIO2; NANOPARTICLES; TEMPERATURE; SENSITIVITY; NANOSHEETS; NANOWIRES;
D O I：
10.1039/d3nj01782f
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The sensitivity and selectivity of semiconductor metal oxides can be effectively improved by transition metal doping and noble metal loading. In this work, Ag-loaded p-type Zn-doped Fe2O3 (Ag@Zn-Fe2O3) nanoparticles were synthesized by a combination of a one-step hydrothermal route and a co-precipitation method. The prepared Ag@Zn-Fe2O3 nanoparticles show a peanut-like structure with a size of about 50-150 nm. The Zn doping and the Ag loading can synergistically improve the response of the Fe2O3 nanoparticles to acetone. At the optimum operating temperature (150 & DEG;C), the response of the Ag@Zn-Fe2O3 sensor to 100 ppm acetone is 50.2, which is significantly higher than 8.9 and 25.8 corresponding to Fe2O3 and Zn-Fe2O3, respectively. In addition, the Ag@Zn-Fe2O3 sensor exhibits excellent selectivity, good moisture resistance, and long-term stability to acetone. Meanwhile, the possible mechanism of the improved acetone sensing properties is also discussed.
引用
收藏
页码：15089 / 15098
页数：10
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