Polymeric nanocomposite materials for photocatalytic detoxification of polycyclic aromatic hydrocarbons in aquatic environments-A review

Munyengabe, Alexis; Ndibewu, Peter Papoh; Sibali, Linda Lunga; Ngobeni, Prince

doi:10.1016/j.rineng.2022.100530

Cited by 14 publications

(3 citation statements)

References 92 publications

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“…Numerous VOCs are synthetic compounds employed in the manufacture of items such as paints, pharmaceuticals, and refrigerants . POPs are considered hazardous contaminants due to their possession of toxic chemical compounds that exhibit genotoxic, carcinogenic, teratogenic, and mutagenic properties . Persistent pollution gives rise to a range of challenges, including the contamination of drinking water and the release of dyes, pharmaceutical waste, and heavy metals into aquatic systems, along with disturbance and eutrophication of water bodies, among other issues .…”

Section: Wastewater and Why Photocatalysis?mentioning

confidence: 99%

Review of Polymeric Nanocomposites for Photocatalytic Wastewater Treatment

Dey,

Manna,

Pradhan

et al. 2024

ACS Appl. Nano Mater.

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The continuous upsurge in water pollution caused by harmful organic and inorganic contaminants has led to a shortage of nontoxic, clean water and effective waste management. Therefore, it is crucial to establish an eco-friendly approach using sustainable, biodegradable, and recyclable materials to treat the wastewater. In this regard, photocatalysts are highly effective for mitigating water pollution to a certain degree through an energy-efficient and greener approach. Among various photocatalysts, polymeric nanocomposites have attracted considerable consideration owing to their several advantageous characteristics like higher surface area, extended surface to volume ratio, advanced adsorption efficiency, and application for the degradation of harmful contaminants. In this comprehensive review, we have focused on the recent synthetic approaches for development of polymeric nanocomposites. Also, the application of these polymeric nanocomposites for the degradation of harmful contaminants has also been extensively summarized. This article further extensively discusses the process of photocatalysis to provide a clear understanding to the reader.

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Section: Wastewater and Why Photocatalysis?mentioning

confidence: 99%

Review of Polymeric Nanocomposites for Photocatalytic Wastewater Treatment

Dey,

Manna,

Pradhan

et al. 2024

ACS Appl. Nano Mater.

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“…In the past few decades, numerous PAHs have undergone extensive research and some of the most extensively studied ones include Naphthalene, Acenaphthylene, Acenaphthene, Fluorene, Phenanthrene, Anthracene, Fluoranthene, Pyrene, Benz[a]anthracene, Chrysene, Benzo[b] fluoranthene, Benzo[k]fluoranthene, Benzo[a]pyrene, Dibenz[a,h]anthracene, Benzo[g,h,i] perylene and Indeno [1,2,3-cd]pyrene [4]. As a result, the European Union and U.S. Environmental Protection Agency have classified these 16 PAHs as high priority contaminants that require monitoring and quantification in all aquatic environments [4][5][6][7]. PAHs exhibit strong persistence as pollutants due to their high octanol/water partition coefficient (K ow ), low water solubility, and strong attraction to lipophilic substances [8].…”

Section: Introductionmentioning

confidence: 99%

Polycyclic Aromatic Hydrocarbons (PAHs) in aquatic ecosystem exposed to the 2020 Baghjan oil spill in upper Assam, India: Short-term toxicity and ecological risk assessment

Singh,

Negi,

Jacob

et al. 2023

PLoS ONE

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This study focuses on the short-term contamination and associated risks arising from the release of Polycyclic Aromatic Hydrocarbons (PAHs) due to the 2020 Baghjan oil blowout in upper Assam, India. Shortly after the Baghjan oil blowout, samples were collected from water, sediment, and fish species and examined for PAHs contents. The results of the analysis revealed ΣPAHs concentrations ranged between 0.21–691.31 μg L-1 (water); 37.6–395.8 μg Kg-1 (sediment); 104.3–7829.6 μg Kg-1 (fish). The prevalence of 3–4 ring low molecular weight PAHs compounds in water (87.17%), sediment (100%), and fish samples (93.17%) validate the petrogenic source of origin (oil spill). The geographic vicinity of the oil blowout is rich in wildlife; thus, leading to a significant mass mortality of several eco-sensitive species like fish, plants, microbes, reptiles, amphibians, birds and mammals including the Gangetic River dolphin. The initial ecological risk assessment suggested moderate to high-risk values (RQ >1) of majority PAHs concerning fish, daphnia, and algae species. This study highlights the need for recognizing the potential for short-term exposure to local species. To safeguard local ecosystems from potential future environmental disasters, it is imperative for the government to adopt a precautionary strategy.

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“…As a case study, we chose the oxidation of anthracene to anthracene‐9,10‐endoperoxide (EPO, Scheme 1). This aromatic oxygenation is important for tackling the problem of polycyclic aromatic hydrocarbons (PAHs [26,27] ). The EPO product can also serve as an organic oxygen carrier [28] .…”

Section: Introductionmentioning

confidence: 99%

Selective Anthracene Photooxidation over Titania‐supported Single Atom Catalysts

Mekkering,

Rothenberg,

Zhang

et al. 2023

ChemCatChem

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Single‐atom catalysts (SACs) often show exceptionally high performance per metal loading. Besides benefiting from a better atom utilisation, the metal‐support interaction is more pronounced in SACs compared to traditional nanoparticle catalysts. Thus, using SACs in photochemical conversions is of great advantage where the rapid reactions often depend on the synergistic interaction of the active site with the photoactive support. Here we show the importance of this interaction by maximizing the active site/support interface using SACs. As an example, we examine the oxidation reaction of anthracene to anthracene‐9,10‐endoperoxide (EPO) in the presence of 0.1 wt% Pt/TiO2. Our SACs give a six‐fold improvement compared to dense packed nanoparticle catalysts (TOF=113 mMol Anthracene gPt−1 min‐−1 for the SAC). We attribute this to the synergy between the active site and the support. Moreover, we show that photocatalytic conversion is possible with photons of lower energy (2.7 eV) than the bandgap of pristine TiO2 (Eg=3.0–3.2 eV) thanks to organic doping of the metal oxide.

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Polymeric nanocomposite materials for photocatalytic detoxification of polycyclic aromatic hydrocarbons in aquatic environments-A review

Cited by 14 publications

References 92 publications

Review of Polymeric Nanocomposites for Photocatalytic Wastewater Treatment

Review of Polymeric Nanocomposites for Photocatalytic Wastewater Treatment

Polycyclic Aromatic Hydrocarbons (PAHs) in aquatic ecosystem exposed to the 2020 Baghjan oil spill in upper Assam, India: Short-term toxicity and ecological risk assessment

Selective Anthracene Photooxidation over Titania‐supported Single Atom Catalysts

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