A comprehensive review on the photocatalytic activity of polythiophene-based nanocomposites against degradation of organic pollutants

Zia, Jannatun; Fatima, Fizzah; Riaz, Ufana

doi:10.1039/d1cy01129d

Cited by 27 publications

(15 citation statements)

References 84 publications

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“…With the rise of organic electronics and photovoltaics, massive efforts were dedicated to developing photostable π-conjugated polymers (polythiophenes, polyanilines, polyimides, and polycatechols, among others) and study of their optoelectronic and photoelectroactive behaviors. The photocatalysis community has recently exploited and directed such knowledge towards developing molecularly tunable photoactive polymer systems that may be used as photocatalysts themselves or exploited to improve the photocatalytic performance of traditional inorganic photocatalysts [158,[163][164][165]. Such approaches are particularly important since they offer the mechanical properties of the polymer matrices and enhance the system's photocatalytic and photoelectronic properties simultaneously.…”

Section: Polymer Supports: From Nanocomposite Water Filtration Membra...mentioning

confidence: 99%

Supported nanostructured photocatalysts: the role of support-photocatalyst interactions

Ullah

Ferreira-Neto

Khan

et al. 2022

Photochem Photobiol Sci

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Heterogeneous photocatalysis employing semiconductor oxide photocatalysts is a sustainable and promising method for environmental remediation and clean energy generation. In this context, nanostructured photocatalysts, with at least one dimension in the 1-100 nm size regime, have attracted ever-growing attention due to their unique and often enhanced sizedependent physicochemical properties. While their reduced size ensures enhanced photocatalytic performance, the same makes it difficult and time/energy-demanding to remove/recover such nanostructured photocatalysts from aqueous media. This fundamental limitation has paved the way towards developing supported nanophotocatalysts where the active photocatalytic nanostructures are coated on the surface of polymeric or inorganic support materials, often in a core@shell conformation. This arrangement solves the problem of photocatalysts' recovery for effective reuse or recycling and leads to improved and desired target properties due to specific photocatalyst-support interactions. While the enhanced physicochemical properties of supported photocatalysts have been widely studied in many target applications, the role of support-photocatalysts interactions in improving these properties remains unexplored. This review article provides an updated viewpoint on the photocatalyst-support interactions and the resulting unique physiochemical properties important for diverse photochemical applications and the design of practical devices. While exploring the properties of supported nanostructured metal oxide/ sulfides photocatalysts such as TiO 2 and MoS 2 , we also briefly discuss the common strategies employed to coat the active nanomaterials on the surface of different supports (organic/polymeric, inorganic, active, inert, and magnetic).

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Section: Polymer Supports: From Nanocomposite Water Filtration Membra...mentioning

confidence: 99%

Supported nanostructured photocatalysts: the role of support-photocatalyst interactions

Ullah

Ferreira-Neto

Khan

et al. 2022

Photochem Photobiol Sci

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“…Thiophene is a widely used building block of materials for variety of light-driven applications [75][76][77][78]. Although thiophene and its oligomers present many favorable photophysical properties, the resulting supramolecular structures are often limited by inherent disorder and heterogeneous environment, which in turn reduces the ability to fine tune and control their optoelectronic properties.…”

Section: Discussionmentioning

confidence: 99%

Thiophene-Based Covalent Organic Frameworks: Synthesis, Photophysics and Light-Driven Applications

2021

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Porous crystalline materials, such as covalent organic frameworks (COFs), have emerged as some of the most important materials over the last two decades due to their excellent physicochemical properties such as their large surface area and permanent, accessible porosity. On the other hand, thiophene derivatives are common versatile scaffolds in organic chemistry. Their outstanding electrical properties have boosted their use in different light-driven applications (photocatalysis, organic thin film transistors, photoelectrodes, organic photovoltaics, etc.), attracting much attention in the research community. Despite the great potential of both systems, porous COF materials based on thiophene monomers are scarce due to the inappropriate angle provided by the latter, which hinders its use as the building block of the former. To circumvent this drawback, researchers have engineered a number of thiophene derivatives that can form part of the COFs structure, while keeping their intrinsic properties. Hence, in the present minireview, we will disclose some of the most relevant thiophene-based COFs, highlighting their basic components (building units), spectroscopic properties and potential light-driven applications.

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“…1b), the band-gap energies for pure TiO 2 and pTh-1 were 3.2 and 1.9 eV, respectively. The photo-induced charge transfer from polythiophene to TiO 2 can be accelerated by this interaction (Zia et al, 2021). As a result of the polythiophene coating on TiO 2 , the photocatalytic effectiveness was improved.…”

Section: Synthesis and Characterization Of Pth-tio 2 Nanocompositesmentioning

confidence: 99%

Sorption-photocatalysis of structurally distinct pesticides using polythiophene/TiO2 composites: Kinetics, equilibrium, reusability and operational economics

Moradeeya

Madhava

Sharma

et al. 2022

Preprint

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An integrated process involving adsorption and photocatalysis are utilized for the breakdown of three different pesticides such as 2,4-D, 4-CPA and TCP. Photo-catalysts were fabricated using polythiophene supported TiO2 composites and utilized for the pesticides degradation under UV light irradiation. The synthesized materials were characterized for elemental, microscopic, spectroscopic and spectrophotometric properties. The outcome shows that polythiophene supported titanium dioxide systems can successfully facilitate the breakdown of pesticides under UV irradiation. The photocatalytic effectiveness of the TiO2 catalyst was significantly improved by the addition of polythiophene. Maximum amount of adsorption capacity for 2,4-D, 4-CPA and TCP were 8.18, 6.333, and 9.681 mg/g by pTh-1. The modified version of the Langmuir-Hinshelwood (L-H) model explained the inter-relationship between the adsorption and photodegradation. Results explained that the pTh-1 catalyzed photodegradation of 4-CPA, TCP and 2,4-D exists the surface reaction which was rate-limiting. Langmuir- Hinshelwood and electrical energy per order (EEO) model provided good fit with batch-mode experiments. Furthermore, these models were successful in elucidating the mechanisms of photocatalytic degradation when pTh-1 was available in the reaction mixture.

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A comprehensive review on the photocatalytic activity of polythiophene-based nanocomposites against degradation of organic pollutants

Abstract: Polythiophene (PTh) and its nanocomposites are considered as promising photocatalytic candidates due to their unique electrical behavior, good environmental stability, low optical band gap, stability in doped/neutral states and in...

Cited by 27 publications

References 84 publications

Supported nanostructured photocatalysts: the role of support-photocatalyst interactions

Supported nanostructured photocatalysts: the role of support-photocatalyst interactions

Thiophene-Based Covalent Organic Frameworks: Synthesis, Photophysics and Light-Driven Applications

Sorption-photocatalysis of structurally distinct pesticides using polythiophene/TiO2 composites: Kinetics, equilibrium, reusability and operational economics

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