Journal
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
Volume 123, Issue 1, Pages -Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00339-016-0699-y
Keywords
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Funding
- USM/RUI Grant from Universiti Sains Malaysia [1001/PBAHAN/814200]
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The photocatalytic performance of ZnO rods in degradation of Rhodamine B dye under UV light was improved by 7.3% via deposition of Ag/AgO using 1.0 x 10(-3) g mL(-1) of silver nitrate solution. However, its photodegradation efficiency decreased with the increase in silver nitrate concentration which was used to prepare the Ag/AgO-ZnO rods. This result suggests that the loading of Ag/AgO on the surface of ZnO rods affected the photocatalytic performance differently. The scavenger study indicates that the main reactive species responsible for the degradation of Rhodamine B dye by Ag-/AgO-deposited ZnO rods were holes, followed by superoxide anion free radicals, hydroxyl free radicals and electrons. Based on these findings, a refined photodegradation mechanism of Rhodamine B by Ag/AgO-ZnO rods is proposed.
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