Open AccessUse of Nanostructured Photocatalysts for Dye Degradation: A Review
Author(s) -
Víctor Ruiz Santoyo,
Beatriz A. Andrade-Espinoza,
Rafael Romero-Toledo,
Luis Miguel Anaya-Esparza,
Zuamí Villagrán,
Antonio GuerraContreras
Publication year - 2022
Publication title -
periodica polytechnica. chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.322
H-Index - 19
eISSN - 1587-3765
pISSN - 0324-5853
DOI - 10.3311/ppch.18885
Subject(s) - photodegradation , photocatalysis , degradation (telecommunications) , materials science , nanotechnology , wastewater , process (computing) , process engineering , biochemical engineering , environmental science , computer science , catalysis , chemistry , environmental engineering , engineering , telecommunications , organic chemistry , operating system
Among the technologies proposed for wastewater treatment, the Advanced Oxidation Processes are viable and technological strategies for dyes degradation. Different photocatalytic systems classified in metal oxides alone or combined through hybrid composites or immobilized onto supports have been designed in various nanostructured shapes for their application in the photodegradation of polluting dyes. This review aims to describe the dyes as an environmental threat, photocatalysis as an effective process to remove dyes from water and provide an overview of the recent studies using photocatalytic systems grouped according to their development. Furthermore, this review describes the main parameters of a photocatalytic system with an important role in dye photodegradation. Finally, we discuss the limitations of photocatalysis for real industrial applications and the challenges for this environmental nanotechnology.