Fe2O3/RGO nanocomposite photocatalyst: Effective degradation of 4-Nitrophenol

Botsa, Sathish Mohan; Ravi, Krishnan; Anjaneyulu, R. Balaji; Sree, Gonamanda Satya; Basavaiah, K.

doi:10.1016/j.physb.2018.10.033

Cited by 59 publications

(21 citation statements)

References 16 publications

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“…The same procedure is followed for the synthesis of SnO 2 /Fe 2 O 3 without added of AgNO 3 . Similarly, pure Fe 2 O 3 [2] was synthesized using 10 mL of 0.1 M FeCl 3 •6H 2 O and 10 mL of 1 M NaOH taken in beaker and stirred for half an hour, this slurry transferred into Teflon lined stainless steel kept in controlled hot air oven at 180 °C for 24 h. The product was collected, washed and dried in aforementioned.…”

Section: Preparation Of Sno 2 /Fe 2 O 3 /Ag Nanocompositementioning

confidence: 99%

“…Dyes are coloured compounds and industrial effluents which are released into water bodies, resulting in high quantity released in environment as non-biodegradable, cause severe problem to all living organisms [1,2]. The dyes for example Eosin yellow and Brilliant green which are most carcinogenic and they poses a danger to human and aquatic biota due to mutagenic and carcinogenic effects [3].…”

Section: Introductionmentioning

confidence: 99%

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SnO2/Fe2O3/Ag Nanocomposite via Hydrothermal Approach: A Novel Highly Efficient Photodegradation of Eosin Yellow and Brilliant Green Dyes Under Visible Light Irradiation

Sunkara

Botsa

2019

Chemistry Africa

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The health hazards generated from textile and dye industries wastewater which are most carcinogenic and they poses a danger to human and aquatic biota. The present work investigates the degradation of dye pollutants such as Eosin yellow (EY) and Brilliant green (BG) under visible light irradiation using SnO 2 /Fe 2 O 3 /Ag nanocomposite. This nanocomposite was prepared by hydrothermal route and characterized by various instrument techniques like XRD, FTIR, FESEM, EDS, HRTEM, UV-Vis DRS, PL and UV-Vis spectrophotometer for determine its crystalline phase, morphology, bandgap and photocatalytic efficiency. The photocatalytic activity of nanocomposite was tested on both dyes EY and BG under visible light irradiation and the experimental results declared that this composite shown better photocatalytic activity in basic solution degraded 93% of BG and 95% of EY in 75 min and 60 min, respectively under the normalised conditions such as basic pH, 30 mg catalyst dose and 10 mg/L of dye solution concentration without any oxidants such as H 2 O 2. This is due to lower bandgap energy of SnO 2 /Fe 2 O 3 /Ag nanocomposite (1.78 eV) and thus shows the red shift, making it active in the visible region, resulting in higher photocatalytic activity. This was proved by compare the photocatalytic efficiency with SnO 2 and SnO 2 /Fe 2 O 3 shown lesser photocatalytic degradation efficiency over EY and BG under visible light irradiation.

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Section: Preparation Of Sno 2 /Fe 2 O 3 /Ag Nanocompositementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

SnO2/Fe2O3/Ag Nanocomposite via Hydrothermal Approach: A Novel Highly Efficient Photodegradation of Eosin Yellow and Brilliant Green Dyes Under Visible Light Irradiation

Sunkara

Botsa

2019

Chemistry Africa

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“…The nanomaterials exclusively metal oxide semiconductors have attracted by the scientists in evolving the pollute water treatment methods. Nanocatalysts (second class of nanomaterials) such as electrocatalysts, fenton based catalysts (photocatalysts) to developing for organic pollutants degradation and antimicrobial properties 9 – 11 . The number of processes has been employed yet but they are ineffective and moreover time consuming.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of multifunctional TANI/Cu2O/Ag nanocomposite for environmental abatement

Botsa

Basavaiah

2020

Sci Rep

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During past decade, the ternary nanocomposite is ubiquitous in nanotechnology. Herein, a simple fabrication of cuprous oxide (cu 2 O) and silver (Ag) nanoparticles into Tetraaniline (TANI) matrix by in situ-polymerization approach to attain Tetramer-Metal Oxide-Metal (TANI/Cu 2 O/Ag, shortly TCA) ternary composite was reported firstly. The synthesized materials were further characterized by a series of instrumental techniques to understand its structure, morphology and thermal properties. This nanocomposite showed promising applications in wastewater treatment by the testing of photocatalytic activity over the pararosaniline hydrochloride (PRA) dye degradation under visible light radiations, removal of Cadmium ion (Cd 2+) by adsorption, corrosion resistance and antibacterial activity against both gram positive and gram negative bacterial strains. The obtained results of TCA compared with the pure TANI and binary nanocomposite (TANI/Cu 2 o) declared that the tcA composite is excellent material to solve the environmental issues due to lesser bandgap energy, visible light respond, high absorptivity, and long-life excitation. Water has exploit asset on the earth, as concern for human beings, the water pollution is currently great issue throughout world and cause copious diseases almost leads to death 1,2. In developing countries, the drinking water contamination by the second largest source mainly pesticides, chemical fertilizer residues and dyes are said to be concern agents 3. The nanomaterials have enormous potential to deletion of heavy metals, organic pollutants, inorganic anions and bacteria have been reported 4-7. Based on copious studies, the nanomaterials illustrate great importance for applications in purify the contaminated water. As a result of the small size, large surface area, especially high mobility in solution, the nanomaterials ensure strong adsorption capacities and reactivity 8. The nanomaterials exclusively metal oxide semiconductors have attracted by the scientists in evolving the pollute water treatment methods. Nanocatalysts (second class of nanomaterials) such as electrocatalysts, fenton based catalysts (photocatalysts) to developing for organic pollutants degradation and antimicrobial properties 9-11. The number of processes has been employed yet but they are ineffective and moreover time consuming. For example, adsorption process converts the dyes from one form to another. Later the Advanced Oxidation Processes (AOP) embraces Fenton, photo Fenton, ozonisation, semiconductor based photocatalysis, photolysis have been developed for the effective decolouration of dye pollutants and destroy the microorganisms. In photocatalysis, the water and oxygen undergo redox reactions which produce extremely Reactive Oxygen Species (*OH, *O 2 −) which are most accountable for the dyes degradation under light illumination 12. Especially the semiconductor heterogeneous photocatalysis seems as better destructive technology to the total decolouration of dyes and destroy the microorganisms. Cuprous oxide (Cu 2...

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“…This target has been achieved by metal doping, 1–5 nonmetal doping, 6–10 or choosing an appropriate preparation method 11–14 . Iron oxide (α‐Fe 2 O 3 , hematite) has a photocatalytic ability in electricity generation, and pollutants oxidize to environmentally safe products 15–20 . This photocatalyst with a low cost, high abundance, and a narrow band gap ( E g = 2.1 eV) has been developed to particularly enhance its efficiency in wastewater photodegradation.…”

Section: Introductionmentioning

confidence: 99%

Microwave synthesis of sulfur‐doped α‐Fe₂O₃ and testing in photodegradation of methyl orange

Almazroai

Maliabari

2020

J Chinese Chemical Soc

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α-Fe 2 O 3 , as a promising photocatalyst in environmental aspects, was doped by a nonmetal to enhance the optical and electronic properties. Sulfur-doped hematite was synthesized by microwave irradiation. The samples were investigated by X-ray diffraction and energy dispersive X-ray-scanning electron microscopy. Nanostructure particles have a hexagonal structure that did not change after sulfur incorporation. The optical studies via UV-Visible spectroscopy proved the high absorbance of S/α-Fe 2 O 3 under the visible region. Moreover, the band gap of S/α-Fe 2 O 3 was shifted to higher wavelengths. However, nonmetals may exhibit a negative effect and act as recombination centers as the photoactivity of undoped hematite was still higher in the photodegradation of methyl orange as a pollutant. H 2 O 2 as an oxidant was fourfold better than O 2 , leading to the formation of the active oxygen species. The preparation method plays a crucial role in the shaping of nanostructure particles and its photoactivity.

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Fe2O3/RGO nanocomposite photocatalyst: Effective degradation of 4-Nitrophenol

Cited by 59 publications

References 16 publications

SnO2/Fe2O3/Ag Nanocomposite via Hydrothermal Approach: A Novel Highly Efficient Photodegradation of Eosin Yellow and Brilliant Green Dyes Under Visible Light Irradiation

SnO2/Fe2O3/Ag Nanocomposite via Hydrothermal Approach: A Novel Highly Efficient Photodegradation of Eosin Yellow and Brilliant Green Dyes Under Visible Light Irradiation

Fabrication of multifunctional TANI/Cu2O/Ag nanocomposite for environmental abatement

Microwave synthesis of sulfur‐doped α‐Fe₂O₃ and testing in photodegradation of methyl orange

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Fe2O3/RGO nanocomposite photocatalyst: Effective degradation of 4-Nitrophenol

Cited by 59 publications

References 16 publications

SnO2/Fe2O3/Ag Nanocomposite via Hydrothermal Approach: A Novel Highly Efficient Photodegradation of Eosin Yellow and Brilliant Green Dyes Under Visible Light Irradiation

SnO2/Fe2O3/Ag Nanocomposite via Hydrothermal Approach: A Novel Highly Efficient Photodegradation of Eosin Yellow and Brilliant Green Dyes Under Visible Light Irradiation

Fabrication of multifunctional TANI/Cu2O/Ag nanocomposite for environmental abatement

Microwave synthesis of sulfur‐doped α‐Fe2O3 and testing in photodegradation of methyl orange

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Microwave synthesis of sulfur‐doped α‐Fe₂O₃ and testing in photodegradation of methyl orange