Photodegradation of methylene blue using CuO films grown via spray pyrolysis technique

Authors

Efren Suratos ⋅ PH National Institute of Physics, University of the Philippines Diliman
Christopher Jude Vergara ⋅ PH National Institute of Physics, University of the Philippines Diliman
Laureen Ida Ballesteros ⋅ PH National Institute of Physics, University of the Philippines Diliman
Debinya Buenafe ⋅ PH National Institute of Physics, University of the Philippines Diliman
Horace Andrew Husay ⋅ PH National Institute of Physics, University of the Philippines Diliman
Arven Cafe ⋅ PH National Institute of Physics, University of the Philippines Diliman
Anthony Tuico ⋅ PH Materials Science Engineering Program, University of the Philippines Diliman
Armando Somintac ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

Cupric oxide (CuO) films were deposited on glass substrates via spray pyrolysis technique for the photodegradation of methylene blue organic dye. Absorbance measurements showed a high degradation efficiency of 72.70% for the CuO film with a thickness of 477 nm (Sample 1) after 1 hour of UV irradiation. The calculated rate constants for Sample 1, Sample 2, Sample 3 and Sample 4 were 0.0196 min⁻¹, 0.0180 min⁻¹, 0.0164 min⁻¹, and 0.0069 min⁻¹, respectively. SEM images showed an increase in particle size as the film thickness was increased, which resulted in a lower degradation efficiency due to a reduced surface area-to volume ratio and enhanced recombination of photogenerated electrons and holes.

Downloads

Issue

2016: Proceedings of the 34th Samahang Pisika ng Pilipinas Physics Conference

Article ID

SPP-2016-1B-03

Section

Condensed Matter Physics and Materials Science

Published

2016-08-18

How to Cite

[1]

E Suratos, CJ Vergara, LI Ballesteros, D Buenafe, HA Husay, A Cafe, A Tuico, and A Somintac, Photodegradation of methylene blue using CuO films grown via spray pyrolysis technique, Proceedings of the Samahang Pisika ng Pilipinas 34, SPP-2016-1B-03 (2016). URL: https://proceedings.spp-online.org/article/view/SPP-2016-1B-03.