Polyaniline (PANI) grafted hierarchical heterostructure nanocomposites for photocatalytic degradation of organic pollutants in waste water: A review

Kausor, Mehdi Al; Chakrabortty, Dhruba

doi:10.1016/j.surfin.2022.102079

Cited by 12 publications

(4 citation statements)

References 180 publications

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“…S10. As a special organic semiconductor photocatalysts, PANI consisting of benzenoid and quinonoid units has a wide range of delocalized π-π conjugated structure in molecules that can efficiently improve a rapid photoinduced charge separation and a relatively slow charge recombination [37,38]. Furthermore, the PGA3 composite membrane is tested for three cycles without cleaning; the results are shown in Fig.…”

Section: Photocatalytic Adsorption-degradation Performancementioning

confidence: 99%

“…Of them, conductive PANI attracted widespread interests owing to its merits of excellent environment stability, low cost, and convenient production [35]. Most importantly, PANI consisting of benzenoid and quinonoid units is a special organic semiconductor photocatalysts, which has a wide range of delocalized π-π conjugated structures in its molecules [36][37][38]. Thus, photothermal and photocatalyst properties of PANI provide a strategy for multi-functional purification membrane.…”

Section: Introductionmentioning

confidence: 99%

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A Trimode Self-Cleaning Composite Membrane with an Eco-friendly Substrate for Energy-Saving Wastewater Recycling

Yu,

et al. 2024

Adv. Fiber Mater.

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A separation membrane with low or clean energy costs is urgently required for energy-saving and long-term service since electric energy generated from burning non-renewable resources will gradually cause a burden to the environment. At present, the conventional membrane being used in one mode is critical for a variety of scenarios in real life, which suffers from a trade-off effect, short service life, being difficult to recycle after damage. Herein, we report a trimode purification membrane composed of an eco-friendly polycaprolactone (PCL) substrate and functional graphene dioxide/polyaniline (GO/PANI) particles. Due to the photothermal transfer and photocatalytic properties of GO/PANI blend, the composite membrane can absorb 97.44% solar energy to handle natural seawater or mixed wastewater, which achieves a high evaporation rate of 1.47 kg m−2 h−1 in solar-driven evaporation mode. For the photocatalytic adsorption–degradation mode, 93.22% of organic dyes can be adsorbed and degraded after 12 h irradiation under 1 kW m−2. Moreover, electric-driven cross-flow filtration mode as a supplement also shows effective rejection over 99% for organic dyes with a high flux over 40 L m−2 h−1 bar−1. The combination of solar-driven evaporation, photocatalytic adsorption–degradation, and electric-driven cross-flow filtration demonstrates a prospective and sustainable strategy to generating clean water from sewages. Graphical Abstract A trimode self-cleaning composite membrane of bio-degradable substrate PCL and functional particles GO/PANI were successfully fabricated, which can purify natural seawater or mixed wastewater stably in solar-driven evaporation mode, handle organic dyes by reduction–oxidation chemical transformation in photothermal adsorption–degradation mode, and be applied in cross-flow filtration mode driven by electric as a supplement for rainy, cloudy days, or at night.

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Section: Photocatalytic Adsorption-degradation Performancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Trimode Self-Cleaning Composite Membrane with an Eco-friendly Substrate for Energy-Saving Wastewater Recycling

Yu,

et al. 2024

Adv. Fiber Mater.

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“…However, the photocatalytic efficiency of PANI has not yet been examined thoroughly. Thus, the research about PANI would open new possibilities for this material to be utilized in photocatalysis [30,31]. In the present study, nano-N-TiO 2 and nano-Ag-TiO 2 powders were prepared applying a sol-gel technique.…”

Section: Introductionmentioning

confidence: 99%

Biocompatible PANI-Encapsulated Chemically Modified Nano-TiO2 Particles for Visible-Light Photocatalytic Applications

Papadopoulou-Fermeli,

Lagopati,

Gatou

et al. 2024

Nanomaterials

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Polyaniline (PANI) constitutes a very propitious conductive polymer utilized in several biomedical, as well as environmental applications, including tissue engineering, catalysis, and photocatalysis, due to its unique properties. In this study, nano-PANI/N-TiO2 and nano-PANI/Ag-TiO2 photocatalytic composites were fabricated via aniline’s oxidative polymerization, while the Ag-and N-chemically modified TiO2 nanopowders were synthesized through the sol–gel approach. All produced materials were fully characterized. Through micro-Raman and FT-IR analysis, the co-existence of PANI and chemically modified TiO2 particles was confirmed, while via XRD analysis the composites’ average crystallite size was determined as ≈20 nm. The semi-crystal structure of polyaniline exhibits higher photocatalytic efficiency compared to that of other less crystalline forms. The spherical-shaped developed materials are innovative, stable (zeta potential in the range from −26 to −37 mV), and cost-effective, characterized by enhanced photocatalytic efficiency under visible light (energy band gaps ≈ 2 eV), and synthesized with relatively simple methods, with the possibility of recycling and reusing them in potential future applications in industry, in wastewater treatment as well as in biomedicine. Thus, the PANI-encapsulated Ag and N chemically modified TiO2 nanocomposites exhibit high degradation efficiency towards Rhodamine B dye upon visible-light irradiation, presenting simultaneously high biocompatibility in different normal cell lines.

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“…On the other hand, polymer-based photocatalysts are developing at a faster rate as a cost-effective material. Therefore, polymers like polyaniline (PANI) (Kausor & Chakrabortty, 2022), polypyrrole (PPy) (Yuan et al, 2019), poly(3,4-ethylene dioxythiophene) (PEDOT) (Ledezma-Espinoza et al, 2022), and polythiophene (PTh) (Ansari et al, 2015) with their structural modifications are mostly applied as ECP materials for this purpose.…”

Section: Introductionmentioning

confidence: 99%

Insights Into the Application of Polyaniline-Based Composites in Environmental Engineering

et al. 2023

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Environmental management demands innovative techniques for its protection and treatment. The essential agreement of the modern world is to overcome every issue in a sustainable way. The two major financial problems in this area are water pollution and material corrosion. Persistent, organic compounds such as pesticides have devastating effects on the water ecosystem. This problem can be solved by applying advanced treatment processes (ATPs) like membrane separation and photocatalysis. Additionally, the corrosion of metal materials needs to be prevented to preserve natural resources and reduce environmental concerns. Therefore, researchers are trying to develop tunable, multifunctional materials with broad applications. Employed materials in these operations must fulfill high criteria, like durability, stability, and chemical and optical activity, to make specified processes efficient and viable. Electroconductive polymers (ECPs) can meet the aforementioned standards. The most used ECP is polyaniline (PANI), due to its catalytic and electrochemical performances. These two properties are beneficial for both water purification and anticorrosion applications. The objectives of the paper are to represent various PANI-based composites utilized in the removal of different classes of pesticides during wastewater treatment by adsorption or photocatalytic degradation. Further corrosion inhibition, utilizing PANI-based inhibitors, will be discussed as well.

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Polyaniline (PANI) grafted hierarchical heterostructure nanocomposites for photocatalytic degradation of organic pollutants in waste water: A review

Cited by 12 publications

References 180 publications

A Trimode Self-Cleaning Composite Membrane with an Eco-friendly Substrate for Energy-Saving Wastewater Recycling

A Trimode Self-Cleaning Composite Membrane with an Eco-friendly Substrate for Energy-Saving Wastewater Recycling

Biocompatible PANI-Encapsulated Chemically Modified Nano-TiO2 Particles for Visible-Light Photocatalytic Applications

Insights Into the Application of Polyaniline-Based Composites in Environmental Engineering

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