Enhanced photocatalytic degradation of methylene blue dye using CuS CdS nanocomposite under visible light irradiation

Mahanthappa, Mallappa; Kottam, Nagaraju; Yellappa, Shivaraj

doi:10.1016/j.apsusc.2018.12.178

Cited by 127 publications

(29 citation statements)

References 52 publications

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“…[ 51 ]. MB decomposition is one of the most popular test reactions used as a reference in determining the photoactivity of semiconductor and nanoscale materials [ 52 , 53 , 54 , 55 ]. In this study, the effects of dye concentration, sample exposure time, and temperature on the catalytic activity of composite Ag/PET TeMs along with the stability of catalysts’ properties were investigated.…”

Section: Resultsmentioning

confidence: 99%

Application of Silver-Loaded Composite Track-Etched Membranes for Photocatalytic Decomposition of Methylene Blue under Visible Light

et al. 2021

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In this study, the use of composite track-etched membranes (TeMs) based on polyethylene terephthalate (PET) and electrolessly deposited silver microtubes (MTs) for the decomposition of toxic phenothiazine cationic dye, methylene blue (MB), under visible light was investigated. The structure and composition of the composite membranes were elucidated by scanning electron microscopy, energy dispersive spectroscopy, and X-ray diffraction technique. Under visible light irradiation, composite membrane with embedded silver MTs (Ag/PET) displayed high photocatalytic efficiency. The effects of various parameters such as initial dye concentration, temperature, and sample exposure time on the photocatalytic degradation process were studied. The decomposition reaction of MB was found to follow the Langmuir–Hinshelwood mechanism and a pseudo-first-order kinetic model. The degradation kinetics of MB accelerated with increasing temperature and activation energy, Ea, was calculated to be 20.6 kJ/mol. The reusability of the catalyst was also investigated for 11 consecutive runs without any activation and regeneration procedures. The Ag/PET composite performed at high degradation efficiency of over 68% after 11 consecutive uses.

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Section: Resultsmentioning

confidence: 99%

Application of Silver-Loaded Composite Track-Etched Membranes for Photocatalytic Decomposition of Methylene Blue under Visible Light

et al. 2021

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“…In a study it was shown that Au-CdS nanocomposite prepared via facile synthesis was able to degrade 95% rhodamine b dye under UV visible light source [136]. In other researches as well, nanocomposites like CdS-Graphene and CuS-CdS have been reported to show degradation efficiency up to 90% and 99.97%, respectively [137,138]. The number of cycles for the use of photocatalyst varies depending on the type of composite synthesized.…”

Section: Photo-catalytic Organic Contaminant Decompositionmentioning

confidence: 99%

Recent Developments in Detoxification of Organic Pollutants Using CdS-based Nanocomposites

Mishra¹,

Tripathi²,

Sinha³

2021

Nano BioMed ENG

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He received young scientist award in 2019 by International Scientist award on Engineering, Science, and Medicine. He has 14 years of teaching and research experience in the area of Nanobiotechnology. He developed innovative method for the biological synthesis of nanomaterials like particles, nanodots, flowers, rods, fibers, etc. He has gained expertise in the area of antimicrobial nanomedicine, colorimetric detection and catalytic/photocatalytic degradation of toxic pollutants. He got recognition as reviewer of highly reputed journals likes Sensors and Actuators B, Scientific Reports, Materials Letter, IOP Nanotechnology, Journal of Photochemistry & Photobiology B, IET Nanobiotechnology, etc. He has authored more than 35 high quality research and review articles in peerreviewed journals of international repute.Dr. Om Prakash Sinha was born on 16 th Jan. 1972 and did his Ph.D.

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“…Using simple and eco-friendly hydrothermal method, CuS/CdS and CuS/MoS 2 heterojunctions were synthesized (Meng et al, 2015; Mahanthappa et al, 2019). Based on the photocatalytic results, as compared to pure CuS, CdS, and MoS 2 , the CuS/CdS and CuS/MoS 2 heterostructures showed higher photocatalytic performance toward the degradation of MB dye under Vis light (250 W W lamp with illumination intensity of 0.01 W/cm 2 ), respectively simulated natural light (Xe lamp, 300 W) irradiation.…”

Section: Photodegradation Of Dyes Using Heterojunctions Based On Coppmentioning

confidence: 99%

Copper Sulfide Based Heterojunctions as Photocatalysts for Dyes Photodegradation

et al. 2019

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The presence of toxic, non-biodegradable and harmful organic pollutants in soils, wastewater, and atmosphere has become an indisputable, and global fact as a significant environmental problem. The heterogeneous photocatalysis, an advanced oxidation process (AOP) using semiconductor materials as catalysts, is a topic of great interest considering the possibility of the pollutants removal from water. The photocatalytic degradation of organic contaminants (i.e., dyes, pesticides, phenolic compounds) present in water using semiconductor materials depends on a number of parameters such as: the bandgap energy, phase composition, crystallinity, morphology and surface area of catalyst, electron-hole recombination rate, intensity of light, and adsorption capacity of the dye on the photocatalyst surface. One of the important constraints related to the catalyst photocatalytic efficiency is the fast recombination of the photogenerated electrons and holes. Therefore, various strategies have been involved in promoting the charge separation, including the development of heterojunction between two semiconductor materials, by tailoring the photocatalysts properties. This mini-review deals with the recent developments on dyes photodegradation using as catalysts various heterojunctions based on copper sulfide nanostructures, such as copper sulfide/metal oxide, copper sulfide/metal sulfide, copper sulfide/graphene, copper sulfide/organic semiconductors etc. The effects of different parameters, such as synthesis parameters, particle size, bandgap energy, surface area, and morphology on the photocatalytic activity of copper sulfide heterojunctions for dyes degradation is also highlighted.

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Enhanced photocatalytic degradation of methylene blue dye using CuS CdS nanocomposite under visible light irradiation

Cited by 127 publications

References 52 publications

Application of Silver-Loaded Composite Track-Etched Membranes for Photocatalytic Decomposition of Methylene Blue under Visible Light

Application of Silver-Loaded Composite Track-Etched Membranes for Photocatalytic Decomposition of Methylene Blue under Visible Light

Recent Developments in Detoxification of Organic Pollutants Using CdS-based Nanocomposites

Copper Sulfide Based Heterojunctions as Photocatalysts for Dyes Photodegradation

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