Photoactive of Chitosan-ZrO2/TiO2 thin film in catalytic degradation of malachite green dyes by solar light

Majnis, Mohd Fadhil; Yee, Ong Chia; Adnan, Mohd; Hamid, Mohd Rashid Yusof; Shaari, Ku Zilati Ku; Julkapli, Nurhidayatullaili Muhd

doi:10.1016/j.optmat.2022.111967

Cited by 16 publications

(5 citation statements)

References 22 publications

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“…Majnis et al integrated chitosan (CS) and ZrO 2 into TiO 2 NPs through a sol–gel fabrication method, to make the CS–ZrO 2 /TiO 2 photocatalyst having a smaller band gap, compared to the unmodified TiO 2 NPs. 97 The photodegradation efficiency of CS–ZrO 2 /TiO 2 was tested (under solar irradiation) using a model dye, malachite green (MG), and the results showed an increase efficiency from 11.87% (for TiO 2 NPs alone) to 30.72% (with ZrO 2 and CS addition in TiO 2 NPs).…”

Section: Surface Modification Of Tio2npsmentioning

confidence: 99%

Surface modification of TiO₂nanoparticles with organic molecules and their biological applications

et al. 2023

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Section: Surface Modification Of Tio2npsmentioning

confidence: 99%

Surface modification of TiO₂nanoparticles with organic molecules and their biological applications

et al. 2023

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“…Therefore, thiazine dyes need to be removed during wastewater treatment. There are some efficient methods to remove thiazine dyes, such as physical adsorption [4,6], oxidation [7,8], electrochemical degradation [9,10] and photocatalytic degradation [11,12]. However, some methods are unstable, harmful, can cause corrosion reactions, and are expensive.…”

Section: Introductionmentioning

confidence: 99%

Efficient methylene blue dye removal using hybrid ZnO/Co/Cs photocatalyst beads

Ong Kwang Zhean,

Mohd Fadhil Majnis,

Mohd Azam Mohd Adnan

et al. 2024

PROGEE

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This study highlighted the developments of the hybrid photocatalytic system for wastewater treatment in the textile industry. Chitosan (Cs) and cobalt (Co) were introduced into the conventional catalyst zinc oxide (ZnO) to form the hybrid photocatalyst beads. Four different weight ratios of ZnO/Cs (1:1) and ZnO/Co/Cs (1:1:1, 1:2:1 and 2:1:1) beads were synthesized by the sol-gel method. The photocatalytic degradation properties of the hybrid ZnO/Co/Cs were investigated under visible light irradiation for methylene blue (MB) photodegradation. The study focused on the effect of ZnO/Co/Cs composition ratio, irradiation time and the amount of catalyst loading in the photoreactor for five hours of exposure time. The result was that the 1:1:1 ZnO/Co/Cs photocatalyst beads had the highest degradation rate compared to the other systems. Adding Co to the ZnO/Cs photocatalyst improved the photocatalytic activity by increasing the decolourization percentage of methylene blue

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“…Various reports have been published in the literature on the use of ZrO2 for the photodegradation of dyes and organic pollutants. All crystal forms of ZrO2, monoclinic, tetragonal and cubic, can have photocatalytic properties [16]. Depending on the synthesis method, calcination temperature and synthesis parameters, products containing a combination of these phases can be obtained.…”

Section: Introductionmentioning

confidence: 99%

Treatment of Automotive Paint Wastewater: Photocatalytic degradation of methylene blue using semi-conductive ZrO2

SEYREK,

BORAN,

OKUTAN

2023

International Journal of Automotive Science and Technology

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Addressing water pollution, particularly in the automotive industry's painting processes, is vital due to its significant environmental impact, and the use of photocatalysis, an environmentally friendly and energy-efficient advanced oxidation method, holds promise for removing non-biodegradable organic dyes from wastewater. In this study, the use of semiconductor ZrO2 nanoparticles in the photocatalytic degradation of pollutants in wastewater under UV light was investigated. Zeta potential, Brunauer–Emmett–Teller (BET) surface area and UV-Vis absorption spectroscopy analyses were performed on the ZrO2 nanoparticle synthesized under optimized experimental conditions. ZrO2 nanoparticles synthesized under the optimized experimental conditions exhibited a high specific surface area (51.793 m2/g). ZrO2 nanoparticles had strong absorption in the visible light region, and the energy band gap was estimated to be approximately 3.062 eV. The photocatalytic activity was evaluated by the degradation of methylene blue under UV light (366 nm). The effects of parameters such as the amount of catalyst, concentration and pH of the dye solution, the wavelength of the UV light source used (366 and 254 nm) and the type of test environment on the removal efficiency of methylene blue were investigated. ZrO2 nanoparticles showed a high degradation efficiency of 91% in a strong alkaline environment, which may be the result of the facilitated formation of –OH radicals due to the increased concentration of hydroxyl ions.

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Photoactive of Chitosan-ZrO2/TiO2 thin film in catalytic degradation of malachite green dyes by solar light

Cited by 16 publications

References 22 publications

Surface modification of TiO₂nanoparticles with organic molecules and their biological applications

Surface modification of TiO₂nanoparticles with organic molecules and their biological applications

Efficient methylene blue dye removal using hybrid ZnO/Co/Cs photocatalyst beads

Treatment of Automotive Paint Wastewater: Photocatalytic degradation of methylene blue using semi-conductive ZrO2

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Photoactive of Chitosan-ZrO2/TiO2 thin film in catalytic degradation of malachite green dyes by solar light

Cited by 16 publications

References 22 publications

Surface modification of TiO2nanoparticles with organic molecules and their biological applications

Surface modification of TiO2nanoparticles with organic molecules and their biological applications

Efficient methylene blue dye removal using hybrid ZnO/Co/Cs photocatalyst beads

Treatment of Automotive Paint Wastewater: Photocatalytic degradation of methylene blue using semi-conductive ZrO2

Contact Info

Product

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Surface modification of TiO₂nanoparticles with organic molecules and their biological applications

Surface modification of TiO₂nanoparticles with organic molecules and their biological applications