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Preparation of Pt and bamboo charcoal co-modified TiO2 for formaldehyde sensing at room temperature

Authors :
Jian-Wei Lin
Yu-Xuan Wang
Hao Xu
Li-Zhu Huo
Xue-Juan Yang
Xi-Ping Luo
Source :
Royal Society Open Science, Vol 11, Iss 7 (2024)
Publication Year :
2024
Publisher :
The Royal Society, 2024.

Abstract

Anatase TiO2 has evolved into one of the most attractive materials for gas sensing owing to its strong oxidation activity and excellent sensing properties. In this study, we prepared Pt and bamboo charcoal co-modified nano-TiO2 using a one-pot hydrothermal process and applied it to detect formaldehyde. The successful incorporation of the precious metal Pt and bamboo charcoal onto TiO2 was confirmed by scanning electron microscope, transmission electron microscopy, energy dispersive spectrometer, X-ray diffraction and X-ray photoelectron spectroscopy. Detailed analysis revealed a homogeneous distribution of Pt nanoparticles and bamboo charcoal on the TiO2 surface, which significantly improved the surface area and facilitated gas adsorption. These modifiers significantly enhanced the response of TiO2 to formaldehyde, for instance, the response signal increased fourfold, while the response time decreased from 91 to 68 s. The sample with 0.5@Pt and 0.5@C bamboo charcoal performed the best, showcasing the synergistic effect of metal nanoparticles and carbonaceous materials on gas-sensing properties. Our work highlighted the potential of using biomass-derived carbon to enhance the detection of formaldehyde and demonstrated the importance of material characteristics in designing effective gas sensors.

Details

Language :
English
ISSN :
20545703
Volume :
11
Issue :
7
Database :
Directory of Open Access Journals
Journal :
Royal Society Open Science
Publication Type :
Academic Journal
Accession number :
edsdoj.5df1840d42054dea9ff6e1d5b22dc3da
Document Type :
article
Full Text :
https://doi.org/10.1098/rsos.231216