| Title: | Metal-organic frameworks derived inverse/normal bimetallic spinel oxides toward the selective VOCs and H(2)S sensing |
| Author(s): | Cao S; Zhou T; Xu X; Bing Y; Sui N; Wang J; Li J; Zhang T; |
| Address: | "State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, PR China. State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, PR China. Electronic address: zhoutt@jlu.edu.cn. School of Public Health, Jilin University, Changchun 130012, PR China. School of Public Health, Jilin University, Changchun 130012, PR China. Electronic address: li_juan@jlu.edu.cn. State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, PR China. Electronic address: zhangtong@jlu.edu.cn" |
| DOI: | 10.1016/j.jhazmat.2023.131734 |
| ISSN/ISBN: | 1873-3336 (Electronic) 0304-3894 (Linking) |
| Abstract: | "As the typical toxic and hazardous gases, volatile organic compounds (VOCs) and hydrogen sulfide (H(2)S) pose a threat to the environment and human health. The demand for real-time detection of VOCs and H(2)S gases is growing in many application to protect human health and air quality. Therefore, it is essential to develop advance sensing materials for the construction of effective and reliable gas sensors. Herein, bimetallic spinel ferrites with different metal ions (MFe(2)O(4), M = Co, Ni, Cu and Zn) were designed by using metal-organic frameworks as templates. The evaluation of cation substitution on crystal structures (inverse/normal spinel structure) and electrical properties (n/p type and band gap) is systematically discussed. The results indicate that p-type NiFe(2)O(4) and n-type CuFe(2)O(4) nanocubes with inverse spinel structure exhibit high response and great selectivity towards acetone (C(3)H(6)O) and H(2)S, respectively. Moreover, the two sensors also display the detection limits as low as 1 ppm (C(3)H(6)O) and 0.5 ppm (H(2)S), which are far below the threshold values of 750 ppm to acetone and 10 ppm to H(2)S for 8 h exposure set by American Conference of Governmental Industrial Hygienists (ACGIH). The finding provides new possibilities for the design of high-performance chemical sensors, which display tremendous potential for practical applications" |
| Keywords: | Acetone Bimetallic spinel oxides Gas sensor Hydrogen sulfide Metal-organic frameworks; |
| Notes: | "PubMed-not-MEDLINECao, Shuang Zhou, Tingting Xu, Xiaoyi Bing, Yu Sui, Ning Wang, Juan Li, Juan Zhang, Tong eng Netherlands 2023/06/09 J Hazard Mater. 2023 Sep 5; 457:131734. doi: 10.1016/j.jhazmat.2023.131734. Epub 2023 May 30" |
