Publication detail

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

GOMEZ PEREZ, I. DIAZ-SANCHEZ, M. PIZÚROVÁ, N. ZAJÍČKOVÁ, L. PRASHAR, S. GOMEZ-RUIZ, S.

Original Title

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

Type

journal article in Web of Science

Language

English

Original 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 lightdriven 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).

Keywords

Graphene quantum dots; Microwave; Titanium dioxide; Functionalization; Photocatalysis; Wastewater treatment

Authors

GOMEZ PEREZ, I.; DIAZ-SANCHEZ, M.; PIZÚROVÁ, N.; ZAJÍČKOVÁ, L.; PRASHAR, S.; GOMEZ-RUIZ, S.

Released

1. 9. 2023

Publisher

ELSEVIER SCIENCE SA

Location

LAUSANNE

ISBN

1010-6030

Periodical

Journal of Photochemistry and Photobiology A:Chemistry

Year of study

443

Number

114875

State

Swiss Confederation

Pages count

9

URL

https://www.sciencedirect.com/science/article/pii/S1010603023003404?via%3Dihub

BibTex

@article{BUT187373,
  author="Inmaculada Jennifer {Gomez Perez} and Miguel {Diaz-Sanchez} and Naděžda {Pizúrová} and Lenka {Zajíčková} and Sanjiv {Prashar} and Santiago {Gomez-Ruiz}",
  title="Crystalline F-doped titanium dioxide nanoparticles decorated with graphene quantum dots for improving the photodegradation of water pollutants",
  journal="Journal of Photochemistry and Photobiology A:Chemistry",
  year="2023",
  volume="443",
  number="114875",
  pages="9",
  doi="10.1016/j.jphotochem.2023.114875",
  issn="1010-6030",
  url="https://www.sciencedirect.com/science/article/pii/S1010603023003404?via%3Dihub"
}