Crystalline F-doped titanium dioxide nanoparticles decorated with graphene quantum dots for improving the photodegradation of water pollutants

GOMEZ PEREZ, Inmaculada Jennifer, Miguel DÍAZ-SÁNCHEZ, Naděžda PIZÚROVÁ, Lenka ZAJÍČKOVÁ, Sanjiv PRASHAR and Santiago GÓMEZ-RUIZ. Crystalline F-doped titanium dioxide nanoparticles decorated with graphene quantum dots for improving the photodegradation of water pollutants. Journal of Photochemistry and Photobiology A: Chemistry. Elsevier Science, 2023, vol. 443, September, p. 1-9. ISSN 1010-6030. Available from: https://dx.doi.org/10.1016/j.jphotochem.2023.114875.

Basic information

• Original name: Crystalline F-doped titanium dioxide nanoparticles decorated with graphene quantum dots for improving the photodegradation of water pollutants
• Authors: GOMEZ PEREZ, Inmaculada Jennifer (724 Spain, guarantor, belonging to the institution), Miguel DÍAZ-SÁNCHEZ, Naděžda PIZÚROVÁ, Lenka ZAJÍČKOVÁ (203 Czech Republic, belonging to the institution), Sanjiv PRASHAR and Santiago GÓMEZ-RUIZ.
• Edition: Journal of Photochemistry and Photobiology A: Chemistry, Elsevier Science, 2023, 1010-6030.

Other information

• Original language: English
• Type of outcome: Article in a journal
• Field of Study: 10302 Condensed matter physics
• Country of publisher: Switzerland
• Confidentiality degree: is not subject to a state or trade secret
• WWW: URL
• Impact factor: Impact factor: 4.300 in 2022
• RIV identification code: RIV/00216224:14310/23:00133044
• Organization unit: Faculty of Science
• Doi: http://dx.doi.org/10.1016/j.jphotochem.2023.114875
• UT WoS: 001055605800001
• Keywords in English: Graphene quantum dots; Microwave; Titanium dioxide; Functionalization; Photocatalysis; Wastewater treatment
• Tags: rivok
• Tags: International impact, Reviewed

Abstract

Carbon dots are emerging photoactive materials with high chemical stability, aqueous solubility, abundant surface functional groups and low-cost production. Their great advantages, incorporated into the high photocatalytic activity of the TiO2, result in hybrid systems that overcome some of the photocatalytic drawbacks associated with TiO2. In this work, a facile synthesis of hybrids of F-doped TiO2 and N-doped graphene quantum dots (F-TiO2@N-GQDs) is reported. These systems have demonstrated efficient photocatalytic properties in light-driven pollutant reduction from water. Therefore, using a simple and low-cost synthesis method, the N-GQDs act as electron reservoirs improving the pairs e--h+ lifetime in TiO2 by decreasing charge recombination, increasing their photocatalytic capacity. The photocatalysts showed very effective degradations of different contaminants such as methylene blue (90% degradation) ciprofloxacin (62% degradation) and naproxen (60% degradation) in short periods of up to 15 min and 4-chlorophenol (59% degradation) in 30 min using UV light (300 W).

Links

• EF17_043/0009632, research and development project: Name: CETOCOEN Excellence
• EF20_079/0017045, research and development project: Name: MSCAfellow4@MUNI
• LM2018121, research and development project: Name: Výzkumná infrastruktura RECETOX (Acronym: RECETOX RI)

Investor: Ministry of Education, Youth and Sports of the CR, RECETOX RI

• 857560, interní kód MU(CEP code: EF17_043/0009632): Name: CETOCOEN Excellence (Acronym: CETOCOEN Excellence)

Investor: European Union, Spreading excellence and widening participation

• 90110, large research infrastructures: Name: CzechNanoLab