Photocatalytic degradation of organic pollutants over visible light active plasmonic Ag nanoparticle loaded Ag2SO3 photocatalysts

Nahar, Samsun; Hasan, Md. Riad; Kadhum, Abdul Amir H.; Hasan, Hassimi Abu; Zain, Muhammad Fauzi Mohd.

doi:10.1016/j.jphotochem.2019.02.025

Cited by 24 publications

(2 citation statements)

References 58 publications

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“…According to some studies, the photocatalyst loading in the photoreactor also affects how much organic pollutants are degraded (Figure 2) [43]. The photocatalytic rate initially rises with catalyst loading but then starts to fall as the catalyst loading increases [45].…”

Section: Factors Affecting the Photocatalytic Degradation Of Organic ...mentioning

confidence: 99%

An overview of wastewater treatment using combined heterogeneous photocatalysis and membrane distillation

2023

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The need for efficient remediation solutions to wastewater has risen due to the concerning prevalence of toxic organic pollutants. It is possible for the linked photocatalysis-membrane separation system to concurrently achieve the photoreaction of pollutants and their removal from wastewater in order to accomplish the goal of completely purifying the wastewater. This investigation's objective is to provide analytical overview of the photocatalytic and membrane coupling process, photocatalytic membrane reactors, and the potential applications of these technologies in the treatment of wastewater for the persistent organic matter removal. In the review, an examination of photocatalytic and membrane processes to remove organic compounds from wastewater is presented. Based on the literature analysis, it was observed that the application of photocatalytic membrane reactors is significantly influenced by a wide variety of factors. Some of these factors include pollutant concentration, dissolved oxygen, aeration, pH, and hydraulic retention time. Light intensity is another factor that has a significant influence. It was also revealed how distillation membranes work when integrated with photocatalytic process. This brief overview will help researchers understand how successful coupled photocatalytic and membrane distillation are in the treatment of wastewater containing organic pollutants.

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Section: Factors Affecting the Photocatalytic Degradation Of Organic ...mentioning

confidence: 99%

An overview of wastewater treatment using combined heterogeneous photocatalysis and membrane distillation

2023

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“…However, there was great interest in the remediation of polluting industrial waste. The use of silver nanoparticles was a promising solution to overcome this problem as they exhibited photocatalytic potential to degrade water effluents under sunlight [11][12][13][14][15][16].This photocatalytic effect could be a disadvantage to a long term stability of a composite material. The following examples of earlier studies of polymer/Ag NPs composites illustrate the influence of the nanofillers on the photochemical and thermochemical stability of various polymers.…”

Section: Introductionmentioning

confidence: 99%

Influence of in situ photo-induced silver nanoparticles on the ageing of acrylate materials

Zouari

Dabert

Asia

et al. 2021

Journal of Photochemistry and Photobiology A: Chemistry

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The present work aims to investigate the impact of a low amount of photo-induced silver nanoparticles (0.2 and 0.4 wt.% of Ag NPs) on the stability of acrylate materials (carriers of ester and ether groups) under the combined effect of oxygen and light. Different techniques were implemented to monitor the structural changes at different scales. The determination of the influence of AgNPs required a preliminary investigation of the pure acrylate polymer under the same experimental conditions. The polymer underwent a post-polymerization of the residual vinyl groups and a photo-oxidative degradation. This degradation induced chemical modifications evidenced by infrared spectroscopy and architectural changes resulting from chain scission reactions. These reactions were not only responsible for the steaming of volatile organic compounds, detected by HS-SPME/GC-MS but also for the increase in mesh size controlled by thermoporosimetry. As regards the polymer/Ag NPs composite, the higher the amount of filler dispersed in the matrix, the greater the rate of degradation. This behaviour was due to the photocatalytic effect of Ag NPs, regardless of the loading in nanoparticles. As a result of irradiation, the nanoparticles migrate to the surface of the film and coalesce, thus inducing an increase in size distribution and a gradient structuring as revealed by TEM analysis. The outcomes of this investigation are important for the development of new composite material with new functionalities (antibacterial, optical, conductive properties) for industrial applications as in textile industry.

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Advances in Nanomaterial‐based Water Treatment Approaches for Photocatalytic Degradation of Water Pollutants

2020

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Demand of pure drinking water is increasing day by day in line with both a growing population and global industrialization. Studies in the past few decades on the application of advanced oxidation processes (AOP) for the treatment of wastewater containing perilous organic pollutants, are promising when compared to conventional water treatment methods. In case of AOP, generation of powerful oxidant radicals (.OH, HOO.) is crucial for the purpose of degradation. Several processes for the in‐situ generation of such highly reactive oxidants have been discussed. This Review highlights the literature reports on the degradation of various organic pollutants (dyes, pharmaceuticals, pesticides, herbicides, insecticides) by means of photocatalysis. A number of scientific investigations have been performed, which elucidate suitable properties (band gap energy, carrier transport, crystallinity etc.) for the deliberate design of efficient photocatalysts. The oxidation rates and degradation efficiency of photocatalysts are governed by some basic parameters, like organic pollutant concentration, photocatalyst concentration, pH, reaction temperature, light intensity, irradiation time, inorganic ions, oxidants, and these are also discussed. Titania and titania based materials have many attractive properties (nontoxicity, less costly, advanced optical properties, high stability) towards photo degradation process. Several studies have been reported investigating the intermediates produced during degradation process as well as the final degraded product, which might be toxic and/or hazardous to the human as well as to the environment. This review assimilates elaborate study on the mechanism of photocatalytic degradation of various organic pollutants.

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Photocatalytic degradation of organic pollutants over visible light active plasmonic Ag nanoparticle loaded Ag2SO3 photocatalysts

Cited by 24 publications

References 58 publications

An overview of wastewater treatment using combined heterogeneous photocatalysis and membrane distillation

An overview of wastewater treatment using combined heterogeneous photocatalysis and membrane distillation

Influence of in situ photo-induced silver nanoparticles on the ageing of acrylate materials

Advances in Nanomaterial‐based Water Treatment Approaches for Photocatalytic Degradation of Water Pollutants

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