Development of Hybrid TiO2/Paint Sludge Extracted Microbe Composite for Enhanced Photocatalytic Dye Degradation

“…Sm 3 GaO 6 acts as a potent photocatalyst to degrade methylene blue dye. The pseudo-first-order kinetic equation provided by the Langmuir-Hinshelwood model 85 was evaluated at relatively low concentrations. Fig.…”

Section: Dalton Transactions Papermentioning

confidence: 99%

Stable single phases of samarium gallium oxide (Sm₃Ga_xO_y) nano semiconductor self-assembly for supercapacitor and photocatalytic applications

et al. 2023

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“…Furthermore, the photocatalyst can cause the coating's organic features to oxidize, limiting the coating's reliability [10,11]. However, regardless of these issues, photocatalytic coatings are commonly utilized in a range of applications and have been found to play a fundamental role in the degradation of dyes [27], NO x [8,19,28], fungi [29], bacteria [30], and volatile organic compounds (VOCs) [31]. As such, using TiO 2 NPs within surface coating applications that are designed to improve photostability is both vital and economically beneficial.…”

Section: Introductionmentioning

confidence: 99%

Hydrophilic/Hydrophobic Silane Grafting on TiO2 Nanoparticles: Photocatalytic Paint for Atmospheric Cleaning

et al. 2021

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In this study, anatase titania was utilized to prepare a durable photocatalytic paint with substantially enhanced photoactivity towards NO oxidation. Consequently, to alleviate the choking effect of photocatalytic paint and incorporate self-cleaning properties, the parent anatase titania was modified with Al(OH)3 and a number of organosilane (tetraethyl orthosilicate, propyltrimethoxysilane, triethoxy(octadecyl)silane, and trimethylchlorosilane) coatings. A facile hydrolysis approach in ethanol was employed to coat the parent titania. To facilitate uniform dispersion in photocatalytic paint and strong bonding with the prevailing organic matrix, it is necessary to avail both hydrophobic and hydrophilic regions on the titania surface. Therefore, during the preparation of modified titania, the weight proportion of the total weight of alkyl silane and trimethylchlorosilane was adjusted to a ratio of 1:1. As the parent titania has few hydrophilic portions on the surface, tetraethyl orthosilicate was coated with an organic silane having an extended alkyl group as a hydrophobic group and tetraethyl orthosilicate as a hydrophilic group. When these two silane mixtures are hydrolyzed simultaneously and coated on the surface of parent titania, a portion containing a large amount of tetraethyl orthosilicate becomes hydrophilic, and a part containing an alkyl silane becomes hydrophobic. The surface morphology and the modified titania’s optical attributes were assessed using X-ray powder diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), UV-Vis diffuse reflectance spectroscopy (DRS), and electrochemical impedance spectroscopy (EIS) analysis. Based on the advanced characterizations, the NO removal mechanism of the modified titania is reported. The modified titania coated at 20 wt.% on the ceramic substrate was found to remove ~18% of NO under one h of UV irradiation. An extensive UV durability test was also carried out, whereby the coated surface with modified titania was exposed to 350 W/m2 of UV irradiance for 2 weeks. The results indicated that the coated surface appeared to preserve the self-cleaning property even after oil spraying. Hence, facile hydrolysis of multiple organosilane in ethanol could be a viable approach to design the coating on anatase titania for the fabrication of durable photoactive paint.

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Hybrid systems to improve photo-based processes and their importance in the dye degradation

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Pazos

2021

Photocatalytic Degradation of Dyes

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Development of Hybrid TiO2/Paint Sludge Extracted Microbe Composite for Enhanced Photocatalytic Dye Degradation

Cited by 10 publications

References 26 publications

Stable single phases of samarium gallium oxide (Sm₃Ga_xO_y) nano semiconductor self-assembly for supercapacitor and photocatalytic applications

Stable single phases of samarium gallium oxide (Sm₃Ga_xO_y) nano semiconductor self-assembly for supercapacitor and photocatalytic applications

Hydrophilic/Hydrophobic Silane Grafting on TiO2 Nanoparticles: Photocatalytic Paint for Atmospheric Cleaning

Hybrid systems to improve photo-based processes and their importance in the dye degradation

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Development of Hybrid TiO2/Paint Sludge Extracted Microbe Composite for Enhanced Photocatalytic Dye Degradation

Cited by 10 publications

References 26 publications

Stable single phases of samarium gallium oxide (Sm3GaxOy) nano semiconductor self-assembly for supercapacitor and photocatalytic applications

Stable single phases of samarium gallium oxide (Sm3GaxOy) nano semiconductor self-assembly for supercapacitor and photocatalytic applications

Hydrophilic/Hydrophobic Silane Grafting on TiO2 Nanoparticles: Photocatalytic Paint for Atmospheric Cleaning

Hybrid systems to improve photo-based processes and their importance in the dye degradation

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Product

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Stable single phases of samarium gallium oxide (Sm₃Ga_xO_y) nano semiconductor self-assembly for supercapacitor and photocatalytic applications

Stable single phases of samarium gallium oxide (Sm₃Ga_xO_y) nano semiconductor self-assembly for supercapacitor and photocatalytic applications