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Silver-Decorated TiO2 Inverse Opal Structure for Visible Light-Induced Photocatalytic Degradation of Organic Pollutants and Hydrogen Evolution

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Details

Original languageEnglish
Pages (from-to)41200-41210
Number of pages11
JournalACS Applied Materials & Interfaces
Volume12
Issue number37
DOIs
Publication statusPublished - 16 Sep 2020
Publication typeA1 Journal article-refereed

Abstract

TiO2 inverse opal (TIO) structures were prepared by the conventional wet chemical method, resulting in well-formed structures for photocatalytic activity. The obtained structures were functionalized with liquid flame spray-deposited silver nanoparticles (AgNPs). The nanocomposites of TIO and AgNPs were extensively characterized by various spectroscopies such as UV, Raman, X-ray diffraction, energy-dispersive spectroscopy, and X-ray photoelectron spectroscopy combined with microscopic methods such as scanning electron microscopy, transmission electron microscopy (TEM), and high-resolution TEM. The characterization confirmed that high-quality heterostructures had been fabricated with evenly and uniformly distributed AgNPs. Fabrication of anatase TiO2 was confirmed, and formation of AgNPs was verified with surface plasmon resonant properties. The photocatalytic activity results measured in the gas phase showed that deposition of AgNPs increases photocatalytic activity both under UVA and visible light excitation; moreover, enhanced hydrogen evolution was demonstrated under visible light.

ASJC Scopus subject areas

Keywords

  • hydrogen evolution, liquid flame spray, photocatalysis, silver nanoparticles, TiO2 inverse opal

Publication forum classification

Field of science, Statistics Finland