Photocatalytic degradation of methyl orange in the presence of electrodeposited Pani-ZNO composite film

Date

4-2013

Degree

Bachelor of Science in Applied Physics

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Armida V. Gillado

Restrictions

Restricted: Not available to the general public. Access is available only after consultation with author/thesis adviser and only to those bound by the confidentiality agreement.

Abstract

Semiconductor assisted photodegradation has gained attention for wastewater treatment. Previous studies showed that addition of polyaniline to semiconductor extends photocatalytic property from the UV region to the visible region. In this study, Pani-ZnO composite was fabricated via in-situ chemical oxidative polymerization technique with 2:1 Pani-ZnO molar concentration. It was then electrodeposited on aluminum substrate with applied voltage of 150V for three minutes. UV-Vis spectroscopy and XRD pattern of PAni-Zno composite film on the photocatalytic degradation of methyl orange was observed via absorption spectroscopy. This was done by submerging the PAni-ZnO composite film to methyl orange solution. The solution was then exposed to fluorescent light and was subjected to UV-Vis absorption spectroscopy at different time intervals. The spectra showed that as the time light exposure increases, the absorption band intensity decreases, which indicates that the PAni-ZnO composite film degraded the methyl orange. However, this degradation decreases after soaking with methyl orange shows a relatively rough surface compared to PAni-ZnO composite film before it was soaked. Thus, it can be inferred that the composite film absorbed the methyl orange.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 2013 P51 /C33

Document Type

Thesis

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