Modification strategies for semiconductor metal oxide nanomaterials applied to chemiresistive NOx gas sensors: A review

Jiaxin Lv; Chaoneng Zhang; Guangfei Qu; Keheng Pan; Jin Qin; Kunling Wei; Yuqi Liang

doi:10.1016/j.talanta.2024.125853

Modification strategies for semiconductor metal oxide nanomaterials applied to chemiresistive NO_x gas sensors: A review

Talanta. 2024 Jun 1:273:125853. doi: 10.1016/j.talanta.2024.125853. Epub 2024 Feb 29.

Authors

Jiaxin Lv¹, Chaoneng Zhang¹, Guangfei Qu², Keheng Pan¹, Jin Qin¹, Kunling Wei¹, Yuqi Liang¹

Affiliations

¹ Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Yunnan, 650500, China; National Regional Engineering Research Center-NCW, Yunnan, 650500, China.
² Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Yunnan, 650500, China; National Regional Engineering Research Center-NCW, Yunnan, 650500, China. Electronic address: qgflab@sina.com.

PMID: 38460422
DOI: 10.1016/j.talanta.2024.125853

Abstract

Semiconductor metal oxides (SMOs) nanomaterials are a category of sensing materials that are widely applied to chemiresistive NO_x gas sensors. However, there is much space to improve the sensing performance of SMOs nanomaterials. Therefore, how to improve the sensing performance of SMOs nanomaterials for NO_x gases has always attracted the interest of researchers. Up to now, there are few reviews focus on the modification strategies of SMOs which applied to NO_x gas sensors. In order to compensate for the limitation, this review summarizes the existing modification strategies of SMOs, hoping to provide researchers a view of the research progress in this filed as comprehensive as possible. This review focuses on the progress of the modification of SMOs nanomaterials for chemiresistive NO_x (NO, NO₂) gas sensors, including the morphology modulation of SMOs, compositing SMOs, loading noble metals, doping metal ions, compositing with carbon nanomaterials, compositing with biomass template, and compositing with MXene, MOFs, conducting polymers. The mechanism of each strategy to enhance the NO_x sensing performance of SMOs-based nanomaterials is also discussed and summarized. In addition, the limitations of some of the modification strategies and ways to address them are discussed. Finally, future perspectives for SMOs-based NO_x gas sensors are also discussed.

Keywords: Chemiresistive gas sensor; Modification strategies; Nitrogen oxide gas detection; Semiconductor metal oxide.

Publication types

Review