The comparison of ZnO/polyaniline nanocomposite under UV and visible radiations for decomposition of metronidazole: Degradation rate, mechanism and mineralization

Asgari, Esrafil; Esrafili, Ali; Jafari, Ahmad Jonidi; Kalantary, Roshanak Rezaei; Nourmoradi, Heshmatollah; Farzadkia, Mahdi

doi:10.1016/j.psep.2019.05.050

Cited by 80 publications

(24 citation statements)

References 67 publications

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“…The polymer load can affect the thickness of the composite [49][50][51][52], its light absorp- Examples of ex situ processes are mixing the catalyst with a polymer and the hydrothermal process, which are illustrated in Figure 2c,d. During the direct mixing of the polymer with the catalyst nanoparticles, the polymer will cover the surface of the catalyst [45].…”

Section: Polymer Loadmentioning

confidence: 99%

“…The polymer load can affect the thickness of the composite [49][50][51][52], its light absorption capacity [49,53], the electron-hole pair recombination rate [49], the catalyst agglomeration [13,54,55], and the composite crystallinity [56].…”

Section: Polymer Loadmentioning

confidence: 99%

“…Asgari et al [49] prepared a ZnO/PANI powder composite through in situ polymerization, to degrade metronidazole (MNZ). Different amounts of aniline (0.0392, 0.196, 0.392 mL) were added to the polymerization medium to obtain composites with varying amounts of PANI.…”

Section: Polymer Loadmentioning

confidence: 99%

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An Overview of Polymer-Supported Catalysts for Wastewater Treatment through Light-Driven Processes

Silva

Gomes

Ferreira

et al. 2022

Water

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In recent years, alarm has been raised due to the presence of chemical contaminants of emerging concern (CECs) in water. This concern is due to the risks associated with their exposure, even in small amounts. These complex compounds cannot be removed or degraded by existing technologies in wastewater treatment plants. Therefore, advanced oxidation processes have been studied, with the objective of developing a technology capable of complementing the conventional water treatment plants. Heterogenous photocatalysis stands out for being a cost-effective and environmentally friendly process. However, its most common form (with suspended catalytic particles) requires time-consuming and costly downstream processes. Therefore, the heterogeneous photocatalysis process with a supported catalyst is preferable. Among the available supports, polymeric ones stand out due to their favorable characteristics, such as their transparency, flexibility and stability. This is a relatively novel process; therefore, there are still some gaps in the scientific knowledge. Thus, this review article aims to gather the existing information about this process and verify which questions are still to be answered.

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Section: Polymer Loadmentioning

confidence: 99%

Section: Polymer Loadmentioning

confidence: 99%

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An Overview of Polymer-Supported Catalysts for Wastewater Treatment through Light-Driven Processes

Silva

Gomes

Ferreira

et al. 2022

Water

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“…Polyaniline (PANI) is a narrow band-gap polymer and by coupling with ZnO, it was possible to modulate the band-gap energy and enhance the absorption capacity for sunlight. 31,32 With a narrower band gap than ZnO, a wider range of light (ultraviolet light and visible light) can be utilized in the ZnO/ PANI nanocomposite system. In addition, PANI as a conductive polymer is not soluble in water.…”

Section: Open-sunlight Polymerization In Zno/pani Microreactor Arraysmentioning

confidence: 99%

Aqueous broadband photopolymerization on microreactor arrays: from high throughput polymerization to fabricating artificial cells

Zhou

Zheng

et al. 2022

Polym. Chem.

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“…Metronidazole (MNZ) is a synthetic antibacterial agent, known for its non-biodegradability and high solubility in water, therefore its removal from the wastewaters before being discharged into the environment has gained important attention. Very recently, Asgari et al [99] investigated the photocatalytic potential of ZnO/PANI nanocomposites for the degradation of MNZ under UV and visible light irradiation. They established that the degradation rate of MNZ by the ZnO/PANI nanocomposite (k = 2.53 × 10 −2 min −1 ) was almost 63 times higher than for the pure ZnO photocatalyst (k = 0.04 × 10 −2 min −1 ) and proposed a diagram for the photocatalytic mechanism of this system ( Figure 6).…”

Section: Zno Nanoparticlesmentioning

confidence: 99%

Polymer Nanocomposites for Photocatalytic Applications

Melinte¹,

Stroea²,

Chibac-Scutaru³

2019

Catalysts

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In the present comprehensive review we have specifically focused on polymer nanocomposites used as photocatalytic materials in fine organic reactions or in organic pollutants degradation. The selection of the polymer substrates for the immobilization of the active catalyst particles is motivated by several advantages displayed by them, such as: Environmental stability, chemical inertness and resistance to ultraviolet radiations, mechanical stability, low prices and ease availability. Additionally, the use of polymer nanocomposites as photocatalysts offers the possibility of a facile separation and reuse of the materials, eliminating thus the post-treatment separation processes and implicitly reducing the costs of the procedure. This review covers the polymer-based photocatalytic materials containing the most popular inorganic nanoparticles with good catalytic performance under UV or visible light, namely TiO2, ZnO, CeO2, or plasmonic (Ag, Au, Pt, Pd) NPs. The study is mainly targeted on the preparation, photocatalytic activity, strategies directed toward the increase of photocatalytic efficiency under visible light and reuse of the hybrid polymer catalysts.

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The comparison of ZnO/polyaniline nanocomposite under UV and visible radiations for decomposition of metronidazole: Degradation rate, mechanism and mineralization

Cited by 80 publications

References 67 publications

An Overview of Polymer-Supported Catalysts for Wastewater Treatment through Light-Driven Processes

An Overview of Polymer-Supported Catalysts for Wastewater Treatment through Light-Driven Processes

Aqueous broadband photopolymerization on microreactor arrays: from high throughput polymerization to fabricating artificial cells

Polymer Nanocomposites for Photocatalytic Applications

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