Synthesis, Humidity Sensing, Photocatalytic and Antimicrobial Properties of Thin Film Nanoporous PbWO4-WO3 Nanocomposites

Markasagayam Visagamani Arularasu; Rangasamy Sundaram; Chinnapan Maria Magdalane; Kasinathan Kanimozhi; Kaviyarasu Kasinathan; Force Tefo Thema; Douglas Letsholathebe; Genene Tessema Mola; Malik Maaza

doi:10.22052/jns.2017.01.006

Journal of Nanostructures (Jan 2017)

Synthesis, Humidity Sensing, Photocatalytic and Antimicrobial Properties of Thin Film Nanoporous PbWO4-WO3 Nanocomposites

Markasagayam Visagamani Arularasu,
Rangasamy Sundaram,
Chinnapan Maria Magdalane,
Kasinathan Kanimozhi,
Kaviyarasu Kasinathan,
Force Tefo Thema,
Douglas Letsholathebe,
Genene Tessema Mola,
Malik Maaza

Affiliations

Markasagayam Visagamani Arularasu: PG and Research Department of Chemistry, Presidency College (Autonomous), Chennai, Tamil Nadu, India
Rangasamy Sundaram: PG and Research Department of Chemistry, Presidency College (Autonomous), Chennai, Tamil Nadu, India
Chinnapan Maria Magdalane: Department of Chemistry, St. Xavier’s College (Autonomous), Tirunelveli, India |LIFE, Department of Chemistry, Loyola College (Autonomous), Chennai, India
Kasinathan Kanimozhi: PG Research & Department of Chemistry, Auxilium College (Autonomous), Vellore, India
Kaviyarasu Kasinathan: UNESCO-UNISA Africa Chair in Nanoscience’s/Nanotechnology Laboratories, College of Graduate Studies, University of South Africa (UNISA), Muckleneuk Ridge, Pretoria, South Africa|Nanosciences African network (NANOAFNET), Materials Research Group (MRG), iThemba LABS-National Research Foundation (NRF), 1 Old Faure Road, 7129, Somerset West, Western Cape Province, South Africa
Force Tefo Thema: UNESCO-UNISA Africa Chair in Nanoscience’s/Nanotechnology Laboratories, College of Graduate Studies, University of South Africa (UNISA), Muckleneuk Ridge, Pretoria, South Africa|Nanosciences African network (NANOAFNET), Materials Research Group (MRG), iThemba LABS-National Research Foundation (NRF), 1 Old Faure Road, 7129, Somerset West, Western Cape Province, South Africa
Douglas Letsholathebe: Department of Physics, University of Botswana, Private Bag 0022, Gaborone, Botswana
Genene Tessema Mola: School of Chemistry and Physics, University of Kwazulu-Natal, Private Bag X01, Scottsville, 3209, Pietermaritzburg, South Africa
Malik Maaza: UNESCO-UNISA Africa Chair in Nanoscience’s/Nanotechnology Laboratories, College of Graduate Studies, University of South Africa (UNISA), Muckleneuk Ridge, Pretoria, South Africa|Nanosciences African network (NANOAFNET), Materials Research Group (MRG), iThemba LABS-National Research Foundation (NRF), 1 Old Faure Road, 7129, Somerset West, Western Cape Province, South Africa

DOI: https://doi.org/10.22052/jns.2017.01.006
Journal volume & issue: Vol. 7, no. 1
pp. 47 – 56

Abstract

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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.

Published in Journal of Nanostructures

ISSN: 2251-7871 (Print); 2251-788X (Online)
Publisher: Nanoscience and Nanotechnology Research Center, University of Kashan
Country of publisher: Iran, Islamic Republic of
LCC subjects: Technology: Chemical technology
Website: http://jns.kashanu.ac.ir

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