Anatase TiO2 powder immobilized on reticulated Al2O3 ceramics as a photocatalyst for degradation of RO16 azo dye

Yildiz, Tuba; Yatmaz, H. Cengiz; Öztürk, Koray

doi:10.1016/j.ceramint.2019.12.098

Cited by 38 publications

(15 citation statements)

References 38 publications

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“…Among others, three-dimensional (3D) macroporous supports (average pore size ranging from 50 nm to a few millimeters) have gained attention because they enable the development of photocatalytic materials with high active surface area per unit of photoreactor volume and low flow resistance [22][23][24][25][26][27][28][29][30][31]. For instance, it has been found that, due to their highly interconnected porous structure, photocatalyst-coated open-cell foams (e.g., ceramic, metal, or polymer foams coated with photocatalytic thin films) exhibit large interface for reaction and superior lightharnessing capabilities, while allowing polluted water to flow through efficiently [22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37]. As a consequence, they are able to significantly exceed the overall photocatalytic performances obtained by using conventional flat supports (often referred to as two-dimensional supports) [27,28].…”

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confidence: 99%

“…Wet impregnation represents the most used strategy for such purpose. It generally involves dipping the porous substrate into a nanocatalyst suspension, followed by drying at room or moderate temperature (commonly less than 150°C) and, in some cases, also by high-temperature calcination (400-900°C) [23][24][25][26][27][28][29][31][32][33][34][35]. Although impregnation is simple and inexpensive to implement, it does not allow a fine control of the growth of the photocatalytic layer.…”

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confidence: 99%

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Low-temperature atmospheric pressure plasma deposition of TiO2-based nanocomposite coatings on open-cell polymer foams for photocatalytic water treatment

Uricchio¹,

Nadal²,

Plujat³

et al. 2021

Applied Surface Science

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confidence: 99%

mentioning

confidence: 99%

Low-temperature atmospheric pressure plasma deposition of TiO2-based nanocomposite coatings on open-cell polymer foams for photocatalytic water treatment

Uricchio¹,

Nadal²,

Plujat³

et al. 2021

Applied Surface Science

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“…In this sense, several supported photocatalysts have been prepared for MO [121,[126][127][128][129][130], RhB [123,[131][132][133], MB [122,[134][135][136][137][138][139][140][141][142][143][144], and other pulliting dyes [124,125,[145][146][147][148][149][150][151][152][153][154][155][156][157][158][159] removal, as shown in Table 3.…”

Section: Immobilized Photocatalystsmentioning

confidence: 99%

Use of Nanostructured Photocatalysts for Dye Degradation: A Review

Santoyo

Andrade-Espinoza

Romero-Toledo

et al. 2022

Period. Polytech. Chem. Eng.

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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.

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“…Highly crystallized and high porosity anatase samples allow the access of large organic molecules as well as light during the reaction [ 120 ]. pH can influence differently the degradation of contaminants [ 38 , 156 ] because, in acidic or alkaline conditions, the TiO 2 surface can be protonated or deprotonated [ 156 , 157 ].…”

Section: Photocatalysis With Supported Materialsmentioning

confidence: 99%

Supported TiO2 in Ceramic Materials for the Photocatalytic Degradation of Contaminants of Emerging Concern in Liquid Effluents: A Review

et al. 2021

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The application of TiO2 as a slurry catalyst for the degradation of contaminants of emerging concern (CEC) in liquid effluents has some drawbacks due to the difficulties in the catalyst reutilization. Thus, sophisticated and expensive separation methods are required after the reaction step. Alternatively, several types of materials have been used to support powder catalysts, so that fixed or fluidized bed reactors may be used. In this context, the objective of this work is to systematize and analyze the results of research inherent to the application of ceramic materials as support of TiO2 in the photocatalytic CEC removal from liquid effluents. Firstly, an overview is given about the treatment processes able to degrade CEC. In particular, the photocatalysts supported in ceramic materials are analyzed, namely the immobilization techniques applied to support TiO2 in these materials. Finally, a critical review of the literature dedicated to photocatalysis with supported TiO2 is presented, where the performance of the catalyst is considered as well as the main drivers and barriers for implementing this process. A focal point in the future is to investigate the possibility of depurating effluents and promote water reuse in safe conditions, and the supported TiO2 in ceramic materials may play a role in this scope.

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Anatase TiO2 powder immobilized on reticulated Al2O3 ceramics as a photocatalyst for degradation of RO16 azo dye

Cited by 38 publications

References 38 publications

Low-temperature atmospheric pressure plasma deposition of TiO2-based nanocomposite coatings on open-cell polymer foams for photocatalytic water treatment

Low-temperature atmospheric pressure plasma deposition of TiO2-based nanocomposite coatings on open-cell polymer foams for photocatalytic water treatment

Use of Nanostructured Photocatalysts for Dye Degradation: A Review

Supported TiO2 in Ceramic Materials for the Photocatalytic Degradation of Contaminants of Emerging Concern in Liquid Effluents: A Review

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