Zinc oxide-decorated polypyrrole/chitosan bionanocomposites with enhanced photocatalytic, antibacterial and anticancer performance

Ahmad, Nafees; Sultana, Saima; Syed, Farhatullah; Ahmed, Aquil; Sabir, Suhail; Khan, Mohammad Zain

doi:10.1039/c9ra06493a

Cited by 76 publications

(23 citation statements)

References 61 publications

(67 reference statements)

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“…Chitosan cannot increase photocatalytic degradation reaction directly; rather aids the adsorption of substrates to the surface where degradation occurs. [51,[97][98][99] In CuO and Co 3 O 4 composites containing chitosan/PANI, the same trend was observed. However, the functions of the PANI and metal oxides are reversed, with the PANI acting as an electron-hole stabilizer and the metal oxides acting as a sensitizer.…”

Section: Photocatalytic Degradation By Mixed Polymer (Conductive and Nonconductive)/metal Oxide Hybrid Nanocompositessupporting

confidence: 66%

“…As a result, dye molecules such as methylene blue are unable to release electrons to the CB. [49][50][51][52] Furthermore, the existence of numerous functional groups, a large surface area, and a porous structure created an oxygen vacancy in the reaction interface, which acts as an active site (induced bandgap) for capturing electrons from the conduction band at the heterojunction interface. Thus, the hole-electron recombination was delayed and hence the continuous flow of electrons from the conduction band to the induced bandgap prevents dye from releasing electrons.…”

Section: Degradation Mechanism By Dye Sensitizationmentioning

confidence: 99%

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Review of the Advancements on Polymer/Metal Oxide Hybrid Nanocomposite‐Based Adsorption Assisted Photocatalytic Materials for Dye Removal

2021

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The use of dyes increases with increasing dye processing industries, especially with textile industries. The persistent nature, environmental toxicity, and carcinogenicity of dyes become the current issue of managing their impact on the ecosystem. Hence various methods of discharging have been reported. Most of the technologies were not effective in the removal process and generate secondary pollutants. However, adsorption supported photocatalytic process becomes a feasible, eco‐friendly, and appropriate technique. Based on these directions, developing such photocatalytic material for dye removal becomes the trend in current research. Thus, this review deals with dye removal through an adsorptive‐assisted photocatalytic process by various hybrid nanocomposite photocatalysts. Particular emphasis on photocatalytic dye degradation progresses by polymer/metal oxide hybrid nanocomposite photocatalysts (metal oxide nanoparticles with conductive, nonconductive, and both conductive & non‐conductive polymers composites) synthesis and dye degradation mechanisms. Besides, the kinetics, efficiency of degradation, and related factors were also assessed. Conversion of dyes to water, carbon dioxide, and other mineralized non‐toxic pollutants makes this technique the most preferred.

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Section: Photocatalytic Degradation By Mixed Polymer (Conductive and Nonconductive)/metal Oxide Hybrid Nanocompositessupporting

confidence: 66%

Section: Degradation Mechanism By Dye Sensitizationmentioning

confidence: 99%

Review of the Advancements on Polymer/Metal Oxide Hybrid Nanocomposite‐Based Adsorption Assisted Photocatalytic Materials for Dye Removal

2021

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“…PPy/ZnO composite: With regards to photocatalytic activity, PPy donates photon-induced electrons to ZnO under visible-light irradiation, which results in an improvement in the photocatalytic activity and a reduction in the recombination of charge carriers [ 74 , 75 ]. To create a flexible photocatalytic film, a novel composite of ZnO-microrod arrays and electrodeposited PPy was recently developed ( Figure 3 ) [ 33 ].…”

Section: Synthesis and Properties Of Conjugated Polymer/metal Oxide Compositesmentioning

confidence: 99%

Advanced Photocatalysts Based on Conducting Polymer/Metal Oxide Composites for Environmental Applications

Tran

Jung

et al. 2021

Polymers

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Photocatalysts provide a sustainable method of treating organic pollutants in wastewater and converting greenhouse gases. Many studies have been published on this topic in recent years, which signifies the great interest and attention that this topic inspires in the community, as well as in scientists. Composite photocatalysts based on conducting polymers and metal oxides have emerged as novel and promising photoactive materials. It has been demonstrated that conducting polymers can substantially improve the photocatalytic efficiency of metal oxides owing to their superior photocatalytic activities, high conductivities, and unique electrochemical and optical properties. Consequently, conducting polymer/metal oxide composites exhibit a high photoresponse and possess a higher surface area allowing for visible light absorption, low recombination of charge carriers, and high photocatalytic performance. Herein, we provide an overview of recent advances in the development of conducting polymer/metal oxide composite photocatalysts for organic pollutant degradation and CO2 conversion through photocatalytic processes.

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“…The transmission of microorganisms could be minimized by introducing antimicrobial functions. Phenol derivatives, − metal particles or ions, − quaternary ammonium, − and N -halamine − compounds are currently used for the preparation of numerous types of biocidal materials. N -halamines are a promising candidate for the preparation of antibacterial materials due to their several advantages, including their broad-spectrum antibacterial activity, nontoxicity, durability, and low environmental impact. , N -halamine compounds contain one or more nitrogen–halogen covalent bonds, formed by the halogenation of imide, amide, or amine groups.…”

Section: Introductionmentioning

confidence: 99%

Crystallization, Mechanical, and Antimicrobial Properties of Diallyl Cyanuric Derivative-Grafted Polypropylene

Zhao

et al. 2021

ACS Omega

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A functional N -halamine precursor with double bonds, 1-3-diallyl- s -triazine-2,4,6-trione (DTT), was synthesized and grafted onto polypropylene using dicumyl peroxide (DCP) as an initiator via melt blending at 200 °C. The DTT content grafted onto the polypropylene (PP) backbone was depended on both DTT and DCP concentrations in feed. The crystallization temperature of PP increased from 116 °C (neat PP) to 123 °C (10% DTT) with the increasing DTT content. Meanwhile, the crystallization rate and relative crystallinity of PP were significantly increased after introduction of the N -halamine precursor. Moreover, the incorporation of DTT had partial compensation for the decreasing mechanical properties of polypropylene, which resulted from degradation. When the amount of added DTT reached up to 5%, the chlorinated DTT-modified PP sheets were able to kill 10 5–6 cfu/mL Escherichia coli (CMCC 44103) and Staphylococcus aureus (ATCC 6538) within 10 min. The DTT-modified PP with the regenerating antibacterial property may have great potential for application in packaging, filters, and hygienic products.

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Zinc oxide-decorated polypyrrole/chitosan bionanocomposites with enhanced photocatalytic, antibacterial and anticancer performance

Abstract: Bio-nanocomposites were synthesized via grafting polypyrrole/ZnO onto chitosan chain for the photodegradation of organic pollutants and biomedical applications.

Cited by 76 publications

References 61 publications

Review of the Advancements on Polymer/Metal Oxide Hybrid Nanocomposite‐Based Adsorption Assisted Photocatalytic Materials for Dye Removal

Review of the Advancements on Polymer/Metal Oxide Hybrid Nanocomposite‐Based Adsorption Assisted Photocatalytic Materials for Dye Removal

Advanced Photocatalysts Based on Conducting Polymer/Metal Oxide Composites for Environmental Applications

Crystallization, Mechanical, and Antimicrobial Properties of Diallyl Cyanuric Derivative-Grafted Polypropylene

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