On the Role of Plasmonic Nanoparticles on the Photocatalytic of TiO2 Nanoparticles for Visible-Light Photoreduction of Bicarbonate

Munawar Khalil, Muhammad Fariz Mulyanto, Jarnuzi Gunlazuardi

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

Abstract

The potential application of anatase titanium dioxide (TiO2) nanoparticles for solar fuel generation has been recently attracting many attentions due to its excellent chemical stability. Nevertheless, the fast charge recombination during photoexcitation process may often reduce the photocatalytic activity. This work presents the role of plasmonic Au nanoparticles on enhancing the photocatalytic activity of TiO2 nanoparticles for a visible-light-driven conversion of bicarbonate to formate. Here, two types of nano-sized Au and TiO2 heterostructures, i.e., Au-TiO2 Janus nanostructures and core-shell Au@TiO2 nanostructures were successfully prepared and characterized using UV-Vis and HR-TEM. Results demonstrated that Au-TiO2 Janus nanostructures had a superior photocatalytic activity compared to TiO2 nanoparticles and core-shell Au@TiO2 nanostructures. This photocatalytic enhancement is believed due to the presence of surface plasmon resonance (SPR) phenomenon in Au nanoparticles that provides a Fermi energy level, which could prevent the charge recombination process during photoexcitation.

Original languageEnglish
Article number012004
JournalJournal of Physics: Conference Series
Volume1310
Issue number1
DOIs
Publication statusPublished - 8 Oct 2019
EventApplied Nanotechnology and Nanoscience International Conference, ANNIC 2018 - Berlin, Germany
Duration: 22 Oct 201824 Oct 2018

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