Photo-catalytic degradations of methylene blue, malachite green and Bismarck brown using poly(azomethine)/TiO2 nanocomposite

Now-a-days nanotechnology is one of the booming fields for the researchers. With the increase in industrialization mainly textile, paper, medicine, plastic industry, there is an increase in concentration of organic dyes as pollutant. Release of harmful dyes in water bodies has become a serious issue, as most of the dyes are carcinogenic and mutagenic in nature and causes various diseases. Therefore, there is a requirement to find out new approaches for efficient treatment of effluent containing dyes. Nanoparticles are one of the potential solutions to this problem. They can be synthesized from different methods, however synthesis of nanoparticles from different plant parts (leaf, root or stem extract) is economical as well as ecofriendly. Phytogenic nanoparticles have various environmental applications and one of them is remediation of dyes. The aim of this review is to provide an overview of last five years studies about catalytic and photocatalytic degradation of various harmful dyes by plant synthesized nanoparticles, mechanism of degradation and advantages and disadvantages of phytogenic synthesis.

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“…Some of the common dyes that act as a pollutant are methyl orange, eosin Y, methylene blue, etc. [24] (Fig. 2).…”

Section: Ingrain Dyesmentioning

confidence: 97%

Phytogenic Synthesis of Metal/Metal Oxide Nanoparticles for Degradation of Dyes

Roy¹,

Murthy²,

Ahmed³

et al. 2022

Journal of Renewable Materials

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“…Te efcient dye removal is observed with 10 cycles of catalytic activities. Pradeeba et al [168] degraded azo dye, cationic azo dye, and Bismarck brown by poly (azomethine)/TiO 2 photocatalyst. Ravikumar et al [169] reported a CdS/Ag photocatalyst for efcient degradation of RR120, AB 1, and DB 15 azo dyes under UV and solar light irradiation.…”

Section: Bismuthmentioning

confidence: 99%

Recent Advances in Efficient Photocatalytic Degradation Approaches for Azo Dyes

Chowdhury,

Anantharaju,

Keshavamurthy

et al. 2023

Journal of Chemistry

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In recent decades, the textile industry has contributed to continuous pollution in the environment. Synthetic dyes which are commonly found in waste water are azo, sulfur, anthraquinone, triphenylmethyl, indigoid, and phthalocyanine derivatives. These pollutants block the light penetration in water bodies and prevent photosynthesis activity, thereby affecting aquatic life. As an environmental crisis, several technologies have been explored to control pollution. Among all the techniques, the photocatalysis process is considered as a green, simple, and economical process. To improve the photocatalytic activity, researchers worldwide have investigated various photocatalysts such as metal oxides, metal ferrites, and heterostructured nanocomposites. The major goal of this review article is to propose a high-performing, cost-effective hybrid photocatalyst reported to date for prospective azo dye pollutant remediation. This review article also aimed to highlight the challenges and uncertainties associated with dye degradation in the photocatalytic process.

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“…Under sonication, ZnO or TiO 2 nanoparticles are liberated in acetone and simultaneously added to the polymeric solution. The precipitated ZnO incorporated polyazomethine (PNZ) or TiO 2 incorporated polyazomethine (PNT) composite material is filtered, washed repeatedly in acetone and dried out [24].FT-IR spectroscopy, UV-Vis spectroscopy, scanning electron microscopy, transmission electron microscopy and Energy Dispersive Analysis X-ray powder X-ray diffraction were used to verify the synthesised polyazomethines (PNT & PNZ) [25][26][27][28][29][30][31].…”

Section: Synthesis Of Zno/tio 2 Incorporated Polyazomethine Polymeric...mentioning

confidence: 99%

Photodegradation, thermodynamic and kinetic study of cationic and anionic dyes from effluents using polyazomethine/ZnO and polyazomethine/TiO2 nanocomposites

Pradeeba¹,

Sampath²

2022

JOBM

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Water is a life-giving and energising substance. People all around the world are struggling due to the deficiency of fresh and hygienic potable water. Clean water is a significant resource for human civilization on Earth and one of the most crucial requirements for all living species to survive. Contamination of water due to synthetic dye is one of the most serious threats to human health. The photocatalystspoly(azomethine), ZnO, TiO2, poly(azomethine)/TiO2 and poly(azomethine)/ZnO were synthesized and used to remove cationic and anionic dyes from contaminated water.The band gap of photocatalysts, reaction kinetics, isotherm studies and thermodynamic studies were assessed and the photocatalytic studies revealed that polyazomethine/ZnO and polyazomethine/TiO2 nanocomposites had significantly higher photocatalytic activity and are more efficient at removing dyes from effluents than PAZ, ZnO, and TiO2 in natural sunlight.

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Photo-catalytic degradations of methylene blue, malachite green and Bismarck brown using poly(azomethine)/TiO2 nanocomposite

Cited by 14 publications

References 29 publications

Phytogenic Synthesis of Metal/Metal Oxide Nanoparticles for Degradation of Dyes

Phytogenic Synthesis of Metal/Metal Oxide Nanoparticles for Degradation of Dyes

Recent Advances in Efficient Photocatalytic Degradation Approaches for Azo Dyes

Photodegradation, thermodynamic and kinetic study of cationic and anionic dyes from effluents using polyazomethine/ZnO and polyazomethine/TiO2 nanocomposites

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