Determination of the half-life and the quantum yield of ZnO semiconductor photocatalyst in humic acid

Rahadian Zainul

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Determination of the half-life and the quantum yield of ZnO semiconductor photocatalyst in humic acid

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Rahadian Zainul

2016 Der Pharmacia Lettre Vol. 8 Issue 15 Article Cited by 16 SDG 12

Abstract

This research aim to investigate kinetics of humic acid photo-transformation. This study was done under some optimum conditions: lighting time of 2 hours, using Hg lamp of low pressure (λ = 254 nm), humic acid of 100 ppm and pH=9.2. it was disclosed that 97.51 % of humic acid transformed into minerals product which involved the first orde reaction, 38.4 minute half-life, the constant rate of reaction is 0.02 minutes-1 and the quantum rendement of 0.115 molecules per photons.

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Department of Physical Chemistry, Universitas Negeri Padang, Indonesia

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