Influence of selected reactive oxygen species on the photocatalytic activity of TiO2/SiO2 composite coatings processed at low temperature

Romero-Morán, Alejandra; Sánchez-Salas, José Luis; Molina, Joel

doi:10.1016/j.apcatb.2020.119685

Cited by 32 publications

(14 citation statements)

References 67 publications

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“…103 Silicon dioxide (SiO 2 ) is another important photocatalytic material for microbial inactivation. 104 Singh et al used TiO 2 as a photocatalytic coating on Si and SiO 2 nanostructures. The optical absorption of TiO 2 −SiO 2 was 1.8 times higher than that of TiO 2 −Si through numerical optical analysis.…”

Section: Titanium Dioxide-based Materialsmentioning

confidence: 99%

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Photocatalytic Antimicrobials: Principles, Design Strategies, and Applications

Ran,

Wang

et al. 2023

Chem. Rev.

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Nowadays, the increasing emergence of antibiotic-resistant pathogenic microorganisms requires the search for alternative methods that do not cause drug resistance. Phototherapy strategies (PTs) based on the photoresponsive materials have become a new trend in the inactivation of pathogenic microorganisms due to their spatiotemporal controllability and negligible side effects. Among those phototherapy strategies, photocatalytic antimicrobial therapy (PCAT) has emerged as an effective and promising antimicrobial strategy in recent years. In the process of photocatalytic treatment, photocatalytic materials are excited by different wavelengths of lights to produce reactive oxygen species (ROS) or other toxic species for the killing of various pathogenic microbes, such as bacteria, viruses, fungi, parasites, and algae. Therefore, this review timely summarizes the latest progress in the PCAT field, with emphasis on the development of various photocatalytic antimicrobials (PCAMs), the underlying antimicrobial mechanisms, the design strategies, and the multiple practical antimicrobial applications in local infections therapy, personal protective equipment, water purification, antimicrobial coatings, wound dressings, food safety, antibacterial textiles, and air purification. Meanwhile, we also present the challenges and perspectives of widespread practical implementation of PCAT as antimicrobial therapeutics. We hope that as a result of this review, PCAT will flourish and become an effective weapon against pathogenic microorganisms and antibiotic resistance.

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Section: Titanium Dioxide-based Materialsmentioning

confidence: 99%

“…Silicon dioxide (SiO 2 ) is another important photocatalytic material for microbial inactivation . Singh et al used TiO 2 as a photocatalytic coating on Si and SiO 2 nanostructures.…”

Section: Classification Of Photocatalytic Antimicrobialsmentioning

confidence: 99%

Photocatalytic Antimicrobials: Principles, Design Strategies, and Applications

Ran,

Wang

et al. 2023

Chem. Rev.

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“…The photogenerated holes may react with the adsorbed water on the surface to form oxygen and hydrogen ions. It may also be oxidized to hydroxyl radicals •OH [36,37], which could oxidize Cr(III) backward to Cr(VI), and the photocatalytic reduction of Cr(VI) efficiency of the photocatalyst could be suppressed. With the addition of p-hydroxybenzoic acid, photogenerated holes could be trapped by p-hydroxybenzoic acid and considerably promote the charge separation, resulting in the improved photocatalytic reduction of Cr(VI) on the surface of Bi 12 TiO 20 /RGO.…”

Section: Catalytic Mechanismmentioning

confidence: 99%

Enhanced Photocatalytic Removal of Hexavalent Chromium over Bi12TiO20/RGO Polyhedral Microstructure Photocatalysts

et al. 2022

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A Bi12TiO20/RGO photocatalyst with polyhedron microstructure was fabricated via the template-free hydrothermal method, and the visible-light-induced photocatalytic activity of the prepared Bi12TiO20 was also evaluated by the photocatalytic reduction of heavy metal pollutants. The structures and optical properties of the prepared Bi12TiO20/RGO were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and UV–vis diffuse reflectance spectrum (UV–vis DRS). The effects of the reaction time and mineralizer concentration on the formation of the Bi12TiO20 polyhedral microstructure were analyzed. The enhanced photocatalytic performances of Bi12TiO20/RGO were observed which were ascribed to the combination of the Bi12TiO20 microstructure induced photogenerated charges and the RGO nanostructure as a photogenerated charges carrier. The effect of organic acids, p-hydroxybenzoic acid (PHBA), chloroacetic acid, and citric acid on the Cr(VI) photocatalytic reduction was also discussed. This work provides an insight into the design of the bismuth-based microstructure photocatalyst towards the application for environment purification of heavy metals.

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“…However, TiO 2 can only be activated by ultraviolet light (UV) and has poor activity, which limits its further application. [14][15][16] The high electron-hole pairs recombination rate and large band gap (3.2 eV) are the main reasons for the poor photocatalytic performance of TiO 2 . [17,18] To improve the photocatalytic performance, TiO 2 has been investigated by various methods, including doping materials.…”

Section: Introductionmentioning

confidence: 99%

“…Among all kinds of semiconductors, TiO 2 may be one of the best semiconductor materials to degrade pollutants and decompose water due to its high chemical resistance, low price, and nontoxic. However, TiO 2 can only be activated by ultraviolet light (UV) and has poor activity, which limits its further application [14–16] . The high electron‐hole pairs recombination rate and large band gap (3.2 eV) are the main reasons for the poor photocatalytic performance of TiO 2 [17,18] .…”

Section: Introductionmentioning

confidence: 99%

Construction of MoS₂/TiO₂ Heterojunction for Excellent Photocatalytic Degradation of Tetracycline

Zhang,

Huo,

Jia

et al. 2023

ChemistrySelect

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A series of MoS2/TiO2 heterojunction photocatalysts were prepared through the hydrothermal method and were analyzed via many characterizations. The tetracycline hydrochloride (TCH) was used to evaluate the performance of the photocatalysts under visible light. Compared with TiO2, the MoS2/TiO2 heterojunction has increased inhomogeneity and uneven grain size. The MoS2/TiO2 heterojunction exhibited the best activity for TCH degradation with a removal rate of 95.4 % in 120 min with a rate constant of. The reaction rate constants of MoS2/TiO2 heterojunction (0.0236 min−1) were 2.6 times and 18.2 times of the pure TiO2 and MoS2 (0.0090 min−1 and 0.0013 min−1), respectively. The research on the photocatalytic mechanism suggested that the charge transfer path conforms to the II‐scheme model, in which h+ and e− play a crucial role. This research provides strong practical support for the preparation of II‐scheme high‐efficiency photocatalytic materials.

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Influence of selected reactive oxygen species on the photocatalytic activity of TiO2/SiO2 composite coatings processed at low temperature

Cited by 32 publications

References 67 publications

Photocatalytic Antimicrobials: Principles, Design Strategies, and Applications

Photocatalytic Antimicrobials: Principles, Design Strategies, and Applications

Enhanced Photocatalytic Removal of Hexavalent Chromium over Bi12TiO20/RGO Polyhedral Microstructure Photocatalysts

Construction of MoS₂/TiO₂ Heterojunction for Excellent Photocatalytic Degradation of Tetracycline

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Influence of selected reactive oxygen species on the photocatalytic activity of TiO2/SiO2 composite coatings processed at low temperature

Cited by 32 publications

References 67 publications

Photocatalytic Antimicrobials: Principles, Design Strategies, and Applications

Photocatalytic Antimicrobials: Principles, Design Strategies, and Applications

Enhanced Photocatalytic Removal of Hexavalent Chromium over Bi12TiO20/RGO Polyhedral Microstructure Photocatalysts

Construction of MoS2/TiO2 Heterojunction for Excellent Photocatalytic Degradation of Tetracycline

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Construction of MoS₂/TiO₂ Heterojunction for Excellent Photocatalytic Degradation of Tetracycline