Influence of TiO2 phase composition on the photocatalytic activity of TiO2/MWCNT composites prepared by combined sol–gel/hydrothermal method

Réti, Balázs; Zoltan, Major; Szarka, Dóra; Boldizsár, Tamás; Horváth, Endre; Magrez, Arnaud; Forró, Lászlø; Dombi, András; Hernádi, Klára

doi:10.1016/j.molcata.2016.01.016

Cited by 39 publications

(17 citation statements)

References 53 publications

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“…5 shows the photocatalytic degradation of phenol in presence of different composites under visible light irradiation. Unlike composite systems reported elsewhere [70], the samples without MWCNTs showed the enhanced photocatalytic degradation of phenol as compared to the composites containing different amount of MWCNTs. The trends as expected from the theoretical information and literatures mentioned previously, were not observed with the addition of MWCNTs even at low concentration into BiOBr.…”

Section: Drs Measurementsmentioning

confidence: 56%

Hydrothermal synthesis of BiOBr and BiOBr/CNT composites, their photocatalytic activity and the importance of early Bi6O6(OH)3(NO3)3·1.5H2O formation

Sharma

Pap

Garg

et al. 2019

Applied Surface Science

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Section: Drs Measurementsmentioning

confidence: 56%

Hydrothermal synthesis of BiOBr and BiOBr/CNT composites, their photocatalytic activity and the importance of early Bi6O6(OH)3(NO3)3·1.5H2O formation

Sharma

Pap

Garg

et al. 2019

Applied Surface Science

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“…In the last two decades, ever-growing efforts have been made for the development of photocatalytic disinfection applications. Two categories of photocatalysts have been developed for inactivation of microbial species: the metal oxides like photocatalysts, including TiO 2 (Ref 13 ), zinc oxide (ZnO) (Ref 14 ), tungsten oxide (WO 3 ) (Ref 15 ), and the nonmetal catalysts, such as graphitic carbon nitride (g-C 3 N 4 ) (Ref 16 ), C 60 (Ref 17 ), and so on. With the advance of analytical methods for pathogens detection and increasing public health concern, there is a pressing need to evaluate the performance of photocatalysis as an eco-friendly, cost-effective, and sustainable strategy for the disinfection of air, water, and solid surface and also the future opportunities for industrial use.…”

Section: Introductionmentioning

confidence: 99%

Thermal-Sprayed Photocatalytic Coatings for Biocidal Applications: A Review

et al. 2020

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There have been ever-growing demands for disinfection of water and air in recent years. Efficient, eco-friendly, and cost-effective methods of disinfection for pathogens are vital to the health of human beings. The photocatalysis route has attracted worldwide attention due to its highly efficient oxidative capabilities and sustainable recycling, which can be used to realize the disinfection purposes without secondary pollution. Though many studies have comprehensively reviewed the work about photocatalytic disinfection, including design and fabrication of photocatalytic coatings, inactivation mechanisms, or practical applications, systematic reviews about the disinfection photocatalysis coatings from fabrication to effort for practical use are still rare. Among different ways of fabricating photocatalytic materials, thermal spray is a versatile surface coating technique and competitive in constructing large-scale functional coatings, which is a most promising way for the future environmental purification, biomedical and life health applications. In this review, we briefly introduced various photocatalytic materials and corresponding inactivation mechanisms for virus, bacteria and fungus. We summarized the thermal-sprayed photocatalysts and their antimicrobial performances. Finally, we discussed the future perspectives of the photocatalytic disinfection coatings for potential applications. This review would shed light on the development and implementation of sustainable disinfection strategies that is applicable for extensive use for controlling pathogens in the near future.

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“…In most cases, crystal phase composition is determinative regarding the photocatalytic performance. However, mixed phase (particularly anatase-rutile) TiO 2 photocatalysts may possess elevated activities most presumably due to their interfacial interactions [18][19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Carbon sphere templates for TiO 2 hollow structures: Preparation, characterization and photocatalytic activity

et al. 2017

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TiO 2 hollow structures (HS) were synthesized by carbon sphere template removal method. Nanometer sized carbon spheres (CS) were prepared by mild hydrothermal treatment of ordinary table sugar (sucrose). The size of these spheres can be controlled by the parameters of the hydrothermal treatment (e.g. time and pH). The obtained CSs were characterized by scanning electron microscopy (SEM), Raman spectroscopy, infrared spectroscopy (IR), X-ray diffraction (XRD) and thermogravimetry (TG). CSs were successfully coated with TiO 2 via sol-gel method. The phase composition of the TiO 2 hollow spheres were controlled by the annealing temperature during crystallization and CSs template removal. TiO 2 hollow structures (HSs) were characterized by SEM, XRD, Raman spectroscopy, TG and energy-dispersive X-ray spectroscopy (EDX). Photocatalytic performance of the TiO 2 HSs was evaluated by phenol degradation in a batch-type foam reactor under low powered UV-A irradiation. The degradation reaction was followed by high-performance liquid chromatography (HPLC) and total organic carbon (TOC) measurement techniques. Photocatalytic activity test results pointed out that increased rutile content up to a certain extent (resulting mixed phase anatase-rutile TiO 2) effects advantageously the photocatalytic performance of TiO 2 HSs and the unique morphology proved to enhance the photocatalytic activity (six times) as well as TOC removal efficiency (twelve times) compared to the sample which was prepared by the same method without the CSs.

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Influence of TiO2 phase composition on the photocatalytic activity of TiO2/MWCNT composites prepared by combined sol–gel/hydrothermal method

Cited by 39 publications

References 53 publications

Hydrothermal synthesis of BiOBr and BiOBr/CNT composites, their photocatalytic activity and the importance of early Bi6O6(OH)3(NO3)3·1.5H2O formation

Hydrothermal synthesis of BiOBr and BiOBr/CNT composites, their photocatalytic activity and the importance of early Bi6O6(OH)3(NO3)3·1.5H2O formation

Thermal-Sprayed Photocatalytic Coatings for Biocidal Applications: A Review

Carbon sphere templates for TiO 2 hollow structures: Preparation, characterization and photocatalytic activity

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