Photocatalysis of rhodamine B and methyl orange degradation under solar light on ZnO and Cu2O thin films

Boughelout, A.; Macaluso, Roberto; Kechouane, M.; Trari, M.

doi:10.1007/s11144-020-01741-8

Cited by 50 publications

(16 citation statements)

References 51 publications

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Section: Main Textmentioning

confidence: 99%

“…A huge amount of e uent is released throughout dyeing processes into water bodies and the surrounding environment. Dye pollutants can cause dermatitis, allergy, cancer, kidney dysfunction, skin irritation, and problems with the reproductive system and liver in humans [4][5][6][7] .Methylene blue (MB) is a cationic dye that has been used extensively in healthcare, including in several therapeutic and diagnostic procedures. It is commonly used as an antidote, redox agent, antihemoglobinemia medication, antiseptic, stain, and bactericide.…”

mentioning

confidence: 99%

“…MB is harmful to human health, causing irritation of the skin, respiratory tract, and eyes. It also causes permanent damage to the conjunctiva and cornea in human eyes [3][4][5][6] . Two other hazardous dyes are methyl orange (MO) and rhodamine B (RhB).…”

mentioning

confidence: 99%

“…MO is used in the textile, leather, paint, and paper printing industries, whereas RhB is used in the pharmaceutical, leather, and textile industries. Wastewater contaminated by such organic dyes causes several human health and environmental problems, making the development and implementation of an e cient and green technique to resolve this problem urgent [5][6][7][8] . Numerous research groups are working to e ciently solve environmental problems related to water resources.…”

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confidence: 99%

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Selective growth of Ti3+/TiO2/CNT and Ti3+/TiO2/C nanocomposite photocatalysts for enhanced visible-light utilization to degrade organic pollutants by lowering the bandgap of TiO2

Akter

Hanif

Islam

et al. 2021

Preprint

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A convenient route was developed for the selective preparation of two stable nanocomposites, Ti3+/TiO2/CNT (labeled as TTOC-1 and TTOC-3) and Ti3+/TiO2/carbon layer (labeled as TTOC-2), from the same precursor by varying the amount of single-walled carbon nanotubes used in the synthesis. TiO2 is an effective photocatalyst; however, its wide bandgap limits its usefulness to the UV region. As a solution to this problem, our prepared nanocomposites exhibit a small bandgap and wide visible-light (VL) absorption because of the introduction of carbonaceous species and Ti3+ vacancies. The photocatalytic efficiency of the nanocomposites was examined via the degradation of methylene blue dye under VL. Excellent photocatalytic activity of 83%, 98%, and 93% was observed for TTOC-1, TTOC-2, and TTOC-3 nanocomposites within 25 min. In addition, the photocatalytic degradation efficiency of TTOC-2 toward rhodamine B was 71% and for methyl orange (MO) dye was 28% under similar experimental conditions, after 25 min. Higher reusability and structural integrity of the as-synthesized photocatalyst were confirmed within five consecutive runs by photocatalytic test and X-ray diffraction analysis, respectively. The resulting nanocomposites provide new insights into the development of VL-active and stable photocatalysts with high efficiencies.

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confidence: 99%

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Selective growth of Ti3+/TiO2/CNT and Ti3+/TiO2/C nanocomposite photocatalysts for enhanced visible-light utilization to degrade organic pollutants by lowering the bandgap of TiO2

Akter

Hanif

Islam

et al. 2021

Preprint

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“…Photocatalysis can be conveniently applied for degradation of dye pollutants without secondary pollution owning to the complete mineralization of organic dyes into H 2 O, CO 2 and mineral acids [ 12 ]. Metal semiconductor materials, such as TiO 2 [ 13 , 14 ], ZnO [ 15 , 16 ], Fe 2 O 3 [ 17 , 18 , 19 ] and Cu 2 O [ 20 , 21 , 22 ], are used as a photocatalyst.…”

Section: Introductionmentioning

confidence: 99%

Efficient and Rapid Photocatalytic Degradation of Methyl Orange Dye Using Al/ZnO Nanoparticles

et al. 2021

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ZnO and Aluminum doped ZnO nanoparticles (Al/ZnO NPs) were successfully synthesized by the sol-gel method. Together with the effect of calcination temperatures (200, 300 and 400 °C) and Al dosage (1%, 3%, 5% and 10%) on structural, morphological and optical properties of Al/ZnO NPs, their photocatalytic degradation of methyl orange (MO) dye was investigated. The calcination temperatures at 200, 300 and 400 °C in forming structure of ZnO NPs led to spherical nanoparticle, nanorod and nanoflake structures with a well-crystalline hexagonal wurtzite, respectively. The ZnO NPs calcined at 200 °C exhibited the highest specific surface area and light absorption property, leading to the MO removal efficiency of 80% after 4 h under the Ultraviolet (UV) light irradiation. The MO removal efficiency was approximately two times higher than the nanoparticles calcined at 400 °C. Furthermore, the 5% Al/ZnO NPs exhibited superior MO removal efficiency of 99% in only 40 min which was approximately 20 times enhancement in photocatalytic activity compared to pristine ZnO under the visible light irradiation. This high degradation performance was attributed to the extended light absorption, narrowed band gap and effective suppression of electron–hole recombination through an addition of Al metal.

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Enhancement of graphitic carbon nitride (g‐C₃N₄) assisted photodegradation of Rhodamine B under visible light

Kishore Kumar Dora,

K S

2023

ChemistrySelect

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In the current work, the g‐C3N4 photocatalyst was produced by thermal polycondensation of melamine. The Characterization techniques XRD, SEM, FTIR, UV‐DRS, PL, and BET were investigated to find out inherent properties. The PL spectra of the g‐C3N4 photocatalyst showed good absorbance in visible regions for faster degradation of Rhodamine B (RhdB). The synthesized g‐C3N4 photocatalyst is employed for decolorization and demineralization of RhdB about 73 % and 80 % in 105 min and 480 min under visible light. Further, the addition of H2O2 and H2SO4 to RhdB solution in the presence of g‐C3N4 showed enhanced results when compared to g‐C3N4 alone. Moreover, it reduces the time for the removal of RhdB. Simultaneously impeding shift of the maximum absorption peak of RhdB represents alteration of the degradation mechanism. Under alike conditions of photodegradation, after the addition of H2O2 and H2SO4 to the dye solution. The removal of RhdB is enhanced to 98 % and 95 % in 40 min, and 60 min for 5 mg/l and 10 mg/l respectively for H2O2. Further, the addition of H2SO4 enhances efficiency up to 87 %, and 95 % in 50 min, and 80 min respectively for 5 mg/l and 10 mg/l. The overall H2O2 addition showed better efficiency and better rate constants.

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Photocatalysis of rhodamine B and methyl orange degradation under solar light on ZnO and Cu2O thin films

Cited by 50 publications

References 51 publications

Selective growth of Ti3+/TiO2/CNT and Ti3+/TiO2/C nanocomposite photocatalysts for enhanced visible-light utilization to degrade organic pollutants by lowering the bandgap of TiO2

Selective growth of Ti3+/TiO2/CNT and Ti3+/TiO2/C nanocomposite photocatalysts for enhanced visible-light utilization to degrade organic pollutants by lowering the bandgap of TiO2

Efficient and Rapid Photocatalytic Degradation of Methyl Orange Dye Using Al/ZnO Nanoparticles

Enhancement of graphitic carbon nitride (g‐C₃N₄) assisted photodegradation of Rhodamine B under visible light

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Photocatalysis of rhodamine B and methyl orange degradation under solar light on ZnO and Cu2O thin films

Cited by 50 publications

References 51 publications

Selective growth of Ti3+/TiO2/CNT and Ti3+/TiO2/C nanocomposite photocatalysts for enhanced visible-light utilization to degrade organic pollutants by lowering the bandgap of TiO2

Selective growth of Ti3+/TiO2/CNT and Ti3+/TiO2/C nanocomposite photocatalysts for enhanced visible-light utilization to degrade organic pollutants by lowering the bandgap of TiO2

Efficient and Rapid Photocatalytic Degradation of Methyl Orange Dye Using Al/ZnO Nanoparticles

Enhancement of graphitic carbon nitride (g‐C3N4) assisted photodegradation of Rhodamine B under visible light

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Enhancement of graphitic carbon nitride (g‐C₃N₄) assisted photodegradation of Rhodamine B under visible light