Photoreduction of palladium nanoparticles on ZnO nanorods for enhancing photocatalytic decolorization of methylene blue

A. Syampurwadi, I. Primadona, V. Fauzia, Isnaeni

Research output: Contribution to journalConference article

Abstract

The high recombination rate of zinc oxide (ZnO) limits its photocatalytic activity and performance. Depositing noble metal nanoparticles (NPs) onto ZnO nanorods (NRs) is a promising approach that could facilitate interfacial charge-transfer processes, thereby increasing its photocatalytic activity. Generally, silver and gold NPs are used in conventional powdered structure, but in this work, due to the unique chemical and optical properties, palladium (Pd) NPs were utilized. Pd NPs were successfully deposited onto the surface of ZnO NRs by photoreduction process using a UV (365 nm) and a simulated solar light (Xe lamp). Irradiation by a Xe lamp produced a high number of Pd NPs with a particle size average of 52 nm. Compared to the pristine of ZnO NRs, the modified Pd/ZnO NRs (Xe) enhanced the photocatalytic activity about 21 %. This improvement might be due to the effect of Pd NPs that increase the light absorbance and the number of free radicals to degrade the methylene blue structure.

Original languageEnglish
Article number012042
JournalIOP Conference Series: Earth and Environmental Science
Volume483
Issue number1
DOIs
Publication statusPublished - 12 Jun 2020
Event4th International Symposium on Green Technology for Value Chains 2019, GreenVC 2019 - Tangerang, Indonesia
Duration: 23 Oct 201924 Oct 2019

Keywords

  • hydrothermal
  • photocatalyst
  • photoreduction
  • ultrasonic spray pyrolysis
  • ZnO/Pd

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