Low-Potential Arc Plasma Solar-Powered Synthesis of WO3Nanoparticles
Issued Date
2025-11-11
Resource Type
eISSN
24701343
Scopus ID
2-s2.0-105021259767
Journal Title
ACS Omega
Volume
10
Issue
44
Start Page
53201
End Page
53211
Rights Holder(s)
SCOPUS
Bibliographic Citation
ACS Omega Vol.10 No.44 (2025) , 53201-53211
Suggested Citation
Kettrakul P., Dulwarakorn T., Srisukkho N., Subannajui K. Low-Potential Arc Plasma Solar-Powered Synthesis of WO3Nanoparticles. ACS Omega Vol.10 No.44 (2025) , 53201-53211. 53211. doi:10.1021/acsomega.5c07835 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/113083
Title
Low-Potential Arc Plasma Solar-Powered Synthesis of WO3Nanoparticles
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Abstract
A novel approach for synthesizing tungsten trioxide (WO<inf>3</inf>) nanoparticles utilizing arc plasma with a low applied potential is directly obtained from a series of solar panels. This low-potential arc plasma is successfully ignited in a closed, atmospheric-pressure system. The gas molecules inside the chamber are ionized to enhance the oxidization of tungsten. A high-purity tungsten rod (99.99%) is subjected to arc discharge, resulting in the formation of WO<inf>3</inf>. The synthesized product was comprehensively characterized by using FESEM, TEM, HRTEM, EDS, XRD, Raman spectroscopy, FT-IR, TGA, DSC, UV–vis spectroscopy, PL, BET, and XPS, all of which confirmed the structure of WO<inf>3</inf>. UV–vis absorption implied deep-level luminescence related to the oxygen vacancies within the structure. With tungsten (W) electrodes, the low-potential plasma, which can produce nanoparticles, has sufficient energy to successfully slice through Cu, Fe, and Ti plates. The antimicrobial potential of WO<inf>3</inf>was evaluated under dark, UV-A, and visible-light conditions. Notably, WO<inf>3</inf>exhibited significant antibacterial activity against Gram-negative (Escherichia coli) and Gram-positive (Staphylococcus aureus) bacteria, even under dark conditions, suggesting potential photocatalytic and reactive oxygen species-mediated disinfection mechanisms. These findings demonstrate a simple synthesis method of nanoparticles using only renewable electricity and highlight the multifunctional potential of synthesized WO<inf>3</inf>.