Surface modyfication of nano-TiO2 with Cu nanoparticles

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F24%3A10257203" target="_blank" >RIV/61989100:27360/24:10257203 - isvavai.cz</a>

Result on the web

<a href="https://www.newcastle.edu.au/research/centre/gican/icean-2024" target="_blank" >https://www.newcastle.edu.au/research/centre/gican/icean-2024</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Surface modyfication of nano-TiO2 with Cu nanoparticles

Original language description

Titanium dioxide (TiO2) is a widely used semiconductor material in photocatalysis due to its strong oxidative power, chemical stability, and non-toxicity. It effectively degrades a wide range of organic pollutants in wastewater under UV light irradiation. TiO2&apos;s photocatalytic efficiency can be further enhanced by doping with metals or modifying its surface [1, 2], expanding its activity to the visible light spectrum. Its ability to generate reactive oxygen species under light exposure makes TiO2 a potential and sustainable solution for advanced wastewater treatment applications.This work explores an innovative and environmentally friendly chemical method for creating photocatalysts aimed at wastewater treatment. Specifically, it details the deposition of nanometer-sized copper (Cu) nanoparticles (NPs) onto the surface of a commercial titanium dioxide (TiO2) mixture containing both anatase and rutile phases. The process involves a novel low-temperature chemical approach utilizing ultrasonication without the use of a reducing agent to modify the surface of TiO2 grains with Cu NPs. The materials were examined using following techniques: XRD, SEM with TEM, DRS(UV VIS), Raman and FTIR. The study included samples with a Cu content ranging from 0.5 wt% to 5 wt%. The photocatalytic activity of the pristine TiO2 and the Cu NPs modified TiO2 powders was evaluated by their ability to degrade the acid orange 7 (AO7) dye, a common model pollutant, under both ultraviolet (UV) and visible (Vis) light irradiation. The results will be presented during the conference.References[1]M. Michalska, V. Matejka, J. Pavlovsky, P. Praus, M. Ritz, J. Serencisova, L Gembalova, M. Kormunda, K. Foniok, M. Reli, G. Simha Martynkova, Effect of Ag modification on TiO2 and melem/g-C3N4 composite on photocatalytic performances, Scientific Reports 13 (2023) 5270.[2]M. Michalska, J. Pavlovsky, K. Lemański, M. Małecka, M. Ptak, V. Novak, M. Kormunda, V. Matejka, The effect of surface modification with Ag nanoparticles on 21 nm TiO2: anatase/rutile material for application in photocatalysis, Materials Today Chemistry 26 (2022) 101123.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

10403 - Physical chemistry

Project

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Continuities

N - Vyzkumna aktivita podporovana z neverejnych zdroju

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů