Fly ash–based nanocomposites: a potential material for effective photocatalytic degradation/elimination of emerging organic pollutants from aqueous stream

Gadore, Vishal; Ahmaruzzaman, Md.

doi:10.1007/s11356-021-15251-0

Cited by 43 publications

(21 citation statements)

References 134 publications

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“…The pH of the solution is a significant factor affecting the photodegradation of dye in the aqueous phase 44 . The effect of pH on the degradation of RB was investigated by keeping the other parameters constant (Initial dye concentration = 150 ppm, Volume = 50 mL, Catalyst dosage = 2 mg and H 2 O 2 dosage = 0.6 mL) and varying pH from 4 to 10.…”

Section: Resultsmentioning

confidence: 99%

“…Pharmaceuticals, textile, paint, and chemical industries flourished, leading to the generation of harmful chemicals. Moreover, due to large-scale industrialization, many pollutants are dumped into water bodies, resulting in water and environmental pollution 2 . When present in wastewater, dyes, and pigment affect the growth of aquatic plants by blocking the sunlight from reaching the surface.…”

Section: Introductionmentioning

confidence: 99%

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One-pot synthesis of CdS/CeO2 heterojunction nanocomposite with tunable bandgap for the enhanced advanced oxidation process

Gadore

Mishra

Ahmaruzzaman

2023

Sci Rep

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Herein, a binary nanocomposite CdS/CeO2 has been fabricated via a one-pot co-precipitation method for the degradation of Rose Bengal (RB) dye. The structure, surface morphology, composition, and surface area of the prepared composite were characterized by transmission electron microscopy, scanning electron microscopy, X-ray powder diffraction, X-ray photoelectron spectroscopy, Brunaur–Emmett–Teller analysis UV–Vis diffuse reflectance spectroscopy and photoluminescence spectroscopy. The prepared CdS/CeO2(1:1) nanocomposite has a particle size of 8.9 ± 0.3 nm and a surface area of 51.30 m2/g. All the tests indicated the agglomeration of CdS nanoparticles over the surface of CeO2. The prepared composite showed excellent photocatalytic activity in the presence of hydrogen peroxide under solar irradiation towards the degradation of Rose Bengal. Near to about complete degradation of 190 ppm of RB dye could be achieved within 60 min under optimum conditions. The enhanced photocatalytic activity was attributed to the delayed charge recombination rate and a lower bandgap of the photocatalyst. The degradation process was found to follow pseudo-first-order kinetics with a rate constant of 0.05824 min−1. The prepared sample showed excellent stability and reusability and maintained about 87% of the photocatalytic efficiency till the fifth cycle. A plausible mechanism for the degradation of the dye is also presented based on the scavenger experiments.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

One-pot synthesis of CdS/CeO2 heterojunction nanocomposite with tunable bandgap for the enhanced advanced oxidation process

Gadore

Mishra

Ahmaruzzaman

2023

Sci Rep

Self Cite

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“…These heavy metals were also detected in plants and their parts. The flowering plants can accumulate these heavy metals in their nectar which affects the pollinators and nectar robbers and also alters the plant’s reproductive ability [ 9 , 10 , 11 , 41 , 42 , 43 , 44 , 45 ]. The kind of plant species recorded from both places also differs significantly.…”

Section: Discussionmentioning

confidence: 99%

Multiple Site Dissimilarities of Herbaceous Species Due to Coal Fly Ash Dumping Based Soil Heavy Metal Toxication

Singh

Gacem

et al. 2023

Toxics

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The present study analyzes the determinants and patterns of the regional, local, and differential plant diversity of two different sites with similar climatic but varied edaphic factors. This research was undertaken to study the plant diversity and population structure as a consequence of variation in the soil quality between two biotopes: Guru Ghasidas Vishwavidyalaya in Koni (site-I) and National Thermal Power Corporation in Sipat (site-II). The soil of site-I was found to be fertile and showed rich vegetation. On the other hand, the soil of site II was found to be contaminated with heavy metals, which impacts the flora of the region. The ecology of both sites was studied, and their quantitative and qualitative aspects were compared and contrasted. The abundance, density, and richness of the plants in site II were fairly lower than in site-I, which was confirmed by utilizing Simpson’s and Shannon’s diversity indices. Many of the species collected from site II were heavy metal accumulators and could also serve as indicators of heavy metal toxicity.

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“…The charge transporters can be divided by adsorption on the surface of the photocatalyst or by the transfer of charges, which includes splitting e − and h + 39 . The photogenerated e − and h + react with adsorbed O 2 and H 2 O, producing • OH and • O 2 − radicals, and the joint assail of these radicals enables the breakdown of MO dye pollutants into less toxic molecules such as CO 2 and H 2 O 39,44 . Notably, increased focus has been placed on nanoparticles (NPs) as they have a higher surface area, high photocatalytic action, and size‐dependent physicochemical profile, making them promising candidates for photocatalytic AOP in the MO dye effluent treatment process 39,45 …”

Section: Introductionmentioning

confidence: 99%

“…39 The photogenerated e À and h + react with adsorbed O 2 and H 2 O, producing • OH and • O 2 À radicals, and the joint assail of these radicals enables the breakdown of MO dye pollutants into less toxic molecules such as CO 2 and H 2 O. 39,44 Notably, increased focus has been placed on nanoparticles (NPs) as they have a higher surface area, high photocatalytic action, and size-dependent physicochemical profile, making them promising candidates for photocatalytic AOP in the MO dye effluent treatment process. 39,45 Furthermore, the synthesis of nanomaterials used in AOP photocatalysis frequently occurs on chemical and physical synthetic routes such as vapor deposition, milling, sol-gel, thermal evaporation, lithography, hydrothermal, and many more.…”

Section: Introductionmentioning

confidence: 99%

A pragmatic review on photocatalytic degradation of methyl orange dye pollutant using greenly biofunctionalized nanometallic materials: A focus on aquatic body

Emmanuel

Adesibikan

Opatola

et al. 2023

Applied Organom Chemis

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Water is the source of life. But unfortunately, 80% of wastewater is discharged into the aquatic body untreated globally, of which industry is responsible for 70% of such water abstraction through the discharge of pollutants like methyl orange. According to the WWAP, water pollution kills 100 million individuals, 2 million marine animals, and seabirds yearly, and by 2025, it is forecasted that ~1000 million inhabitants in arid zones will experience severe water crisis, and thus, the security of water has become focal outcry due to daily environmental pollution escalation caused by rapid growth in industries and population. Recently, biosynthesized nanoparticles as photocatalysts have answered the call for sustainable treatment of methyl orange dye effluent through photodegradation because of their efficient photoactivity, inexpensiveness, and eco‐benignness. In this review, photocatalytic‐degradation mechanism and pathways of methyl orange in the aquatic environment in the presence of •OH− and •O2− using green nanoparticles were mechanistically discussed. The highest degradation efficiency was found to be 100%, the final mineralization products were H2O and CO2, and the least degradation time taken was 2 min with silver nanoparticles being the most commonly used degrader and plant extracts being the most commonly employed bioreductant for the biosynthesis of nanoparticles.

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Fly ash–based nanocomposites: a potential material for effective photocatalytic degradation/elimination of emerging organic pollutants from aqueous stream

Cited by 43 publications

References 134 publications

One-pot synthesis of CdS/CeO2 heterojunction nanocomposite with tunable bandgap for the enhanced advanced oxidation process

One-pot synthesis of CdS/CeO2 heterojunction nanocomposite with tunable bandgap for the enhanced advanced oxidation process

Multiple Site Dissimilarities of Herbaceous Species Due to Coal Fly Ash Dumping Based Soil Heavy Metal Toxication

A pragmatic review on photocatalytic degradation of methyl orange dye pollutant using greenly biofunctionalized nanometallic materials: A focus on aquatic body

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