Synthesis, Humidity Sensing, Photocatalytic and Antimicrobial Properties of Thin Film Nanoporous PbWO4-WO3 Nanocomposites
| Autor: | Markasagayam Visagamani Arularasu, Rangasamy Sundaram, Chinnapan Maria Magdalane, Kasinathan Kanimozhi, Kaviyarasu Kasinathan, Force Tefo Thema, Douglas Letsholathebe, Genene Tessema Mola, Malik Maaza |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Journal of Nanostructures, Vol 7, Iss 1, Pp 47-56 (2017) |
| Druh dokumentu: | article |
| ISSN: | 2251-7871 2251-788X |
| DOI: | 10.22052/jns.2017.01.006 |
| Popis: | A humidity sensor thin film based on nanoporous PbWO4-WO3 composites has been prepared by spin coating technique with different weight ratio of PbWO4 (Pb) and WO3 (WO) (PWWO-01, PWWO-82, PWWO-64, PWWO-46, PWWO-28, PWWO-01) and their humidity sensing properties have also been investigated at different relative humidity (RH) in the range of 5% - 98% at room temperature with dc resistance. It is found that composite PWWO-28 show best humidity sensing properties with the sensitivity factor value of (Sf) 3733. The response and recovery time of humidity sensor are about 50 s and 120 s, respectively. High sensitivity, narrow hysteresis loop, rapid response and recovery, prominent stability and good repeatability are obtained. Synthesized PbWO4-WO3 composites were characterized by power X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, BET and photoluminescence studies. The photocatalytic result demonstrated photocatalytic efficiency of nonporous PWWO-28 composite. The antimicrobial activity of the composites was determined by disc diffusion method. |
| Databáze: | Directory of Open Access Journals |
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