| Title: | Comparative study on formic acid sensing properties of flame-made Zn(2)SnO(4) nanoparticles and its parent metal oxides |
| Author(s): | Punginsang M; Inyawilert K; Siriwalai M; Wisitsoraat A; Tuantranont A; Liewhiran C; |
| Address: | "Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand. cliewhiran@gmail.com. PhD Program in Nanoscience and Nanotechnology (International Program/Interdisciplinary), Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand. Graduate School, Chiang Mai University, Chiang Mai, 50200, Thailand. Center of Excellence in Materials Science and Technology, Chiang Mai University, Chiang Mai 50200, Thailand. National Security and Dual-Use Technology Center, National Science and Technology Development Agency (NSTDA), Klong Luang, Phathum Thani 12120, Thailand" |
| ISSN/ISBN: | 1463-9084 (Electronic) 1463-9076 (Linking) |
| Abstract: | "In this work, the formic acid (CH(2)O(2))-sensing properties of flame-made inverse spinel Zn(2)SnO(4) nanostructures were systematically studied by comparing with its parent oxides, namely ZnO and SnO(2). All nanoparticles were synthesized via single nozzle flame spray pyrolysis (FSP) in one step and verified by electron microscopy, X-ray analysis, and nitrogen adsorption to exhibit high phase purity and high specific surface area. From gas-sensing measurements, the flame-made Zn(2)SnO(4) sensor displayed the highest response of 1829 towards 1000 ppm CH(2)O(2) at the optimal working temperature of 300 degrees C compared with ZnO and SnO(2). In addition, the Zn(2)SnO(4) sensor presented a moderately low humidity sensitivity and high formic acid selectivity against several volatile organic acids, volatile organic compounds, and environmental gases. The enhanced CH(2)O(2)-sensing of Zn(2)SnO(4) was attributed to very fine FSP-derived nanoparticles with a high surface area and unique crystal structure, which could induce the creation of a large number of oxygen vacancies useful for CH(2)O(2) sensing. Moreover, the CH(2)O(2)-sensing mechanism with an atomic model was proposed to describe the surface reaction of the inverse spinel Zn(2)SnO(4) structure to CH(2)O(2) adsorption in comparison with that of the parent oxides. The results suggest that Zn(2)SnO(4) nanoparticles derived from the FSP process could be a promising alternative material for CH(2)O(2) sensing" |
| Notes: | "PubMed-not-MEDLINEPunginsang, Matawee Inyawilert, Kanittha Siriwalai, Mameaseng Wisitsoraat, Anurat Tuantranont, Adisorn Liewhiran, Chaikarn eng England 2023/05/26 Phys Chem Chem Phys. 2023 Jun 7; 25(22):15407-15421. doi: 10.1039/d3cp00845b" |
