Evaluation of the photodegradation of pharmaceuticals and dyes in water using a highly visible light-active graphitic carbon nitride modified with tungsten oxide

Zwane, Simphiwe; Dlamini, Derrick S.; Mamba, Bheki B.; Kuvarega, Alex T.

doi:10.1016/j.inoche.2023.110637

Cited by 4 publications

(2 citation statements)

References 61 publications

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“…The valence band potential ( E VB ) and conduction band potential ( E CB ) of the semiconductor zero charge point (pH zpc ) can be estimated by eqn (3) and (4): 56–60 E VB = X − E e + 0.5 E g E CB = E VB − E g where X is the geometric mean of the absolute electronegativity of the constituent atoms of the semiconductor, E e is the energy of the free electron at the hydrogen scale, and E g is the band gap. The X values of g-C 3 N 4 and WO 3 were 4.73 eV and 6.49 eV, respectively.…”

Section: Resultsmentioning

confidence: 99%

2D/2D Z-scheme WO₃/g-C₃N₄ heterojunctions for photocatalytic organic pollutant degradation and nitrogen fixation

Li,

Wang

2024

Mater. Adv.

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Section: Resultsmentioning

confidence: 99%

2D/2D Z-scheme WO₃/g-C₃N₄ heterojunctions for photocatalytic organic pollutant degradation and nitrogen fixation

Li,

Wang

2024

Mater. Adv.

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“…In the case of composite photocatalysts, a similar profile was observed, with the increase in WOF weight content leading to a further decrease in PL intensity in the corresponding materials. The lower PL intensity of the composite photocatalysts is attributed to the successful formation of Z-scheme heterojunctions that promote efficient charge separation [ 97 , 99 ].…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of Composite WO3 Fibers/g-C3N4 Photocatalysts for the Removal of the Insecticide Clothianidin in Aquatic Media

Lykos,

Bairamis,

Efthymiou

et al. 2024

Nanomaterials

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Photocatalysis is a prominent alternative wastewater treatment technique that has the potential to completely degrade pesticides as well as other persistent organic pollutants, leading to detoxification of wastewater and thus paving the way for its efficient reuse. In addition to the more conventional photocatalysts (e.g., TiO2, ZnO, etc.) that utilize only UV light for activation, the interest of the scientific community has recently focused on the development and application of visible light-activated photocatalysts like g-C3N4. However, some disadvantages of g-C3N4, such as the high recombination rate of photogenerated charges, limit its utility. In this light, the present study focuses on the synthesis of WO3 fibers/g-C3N4 Z-scheme heterojunctions to improve the efficiency of g-C3N4 towards the photocatalytic removal of the widely used insecticide clothianidin. The effect of two different g-C3N4 precursors (urea and thiourea) and of WO3 fiber content on the properties of the synthesized composite materials was also investigated. All aforementioned materials were characterized by a number of techniques (XRD, SEM-EDS, ATR-FTIR, Raman spectroscopy, DRS, etc.). According to the results, mixing 6.5% W/W WO3 fibers with either urea or thiourea derived g-C3N4 significantly increased the photocatalytic activity of the resulting composites compared to the precursor materials. In order to further elucidate the effect of the most efficient composite photocatalyst in the degradation of clothianidin, the generated transformation products were tentatively identified through UHPLC tandem high-resolution mass spectroscopy. Finally, the detoxification effect of the most efficient process was also assessed by combining the results of an in-vitro methodology and the predictions of two in-silico tools.

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Poly(m-phenylene isophthalamide) (PMIA) membranes as a support for WO3/g-C3N4 for the degradation of diclofenac in water

Zwane,

Ingwani,

Dlamini

et al. 2024

Journal of Photochemistry and Photobiology A: Chemistry

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Evaluation of the photodegradation of pharmaceuticals and dyes in water using a highly visible light-active graphitic carbon nitride modified with tungsten oxide

Cited by 4 publications

References 61 publications

2D/2D Z-scheme WO₃/g-C₃N₄ heterojunctions for photocatalytic organic pollutant degradation and nitrogen fixation

2D/2D Z-scheme WO₃/g-C₃N₄ heterojunctions for photocatalytic organic pollutant degradation and nitrogen fixation

Synthesis and Characterization of Composite WO3 Fibers/g-C3N4 Photocatalysts for the Removal of the Insecticide Clothianidin in Aquatic Media

Poly(m-phenylene isophthalamide) (PMIA) membranes as a support for WO3/g-C3N4 for the degradation of diclofenac in water

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Evaluation of the photodegradation of pharmaceuticals and dyes in water using a highly visible light-active graphitic carbon nitride modified with tungsten oxide

Cited by 4 publications

References 61 publications

2D/2D Z-scheme WO3/g-C3N4 heterojunctions for photocatalytic organic pollutant degradation and nitrogen fixation

2D/2D Z-scheme WO3/g-C3N4 heterojunctions for photocatalytic organic pollutant degradation and nitrogen fixation

Synthesis and Characterization of Composite WO3 Fibers/g-C3N4 Photocatalysts for the Removal of the Insecticide Clothianidin in Aquatic Media

Poly(m-phenylene isophthalamide) (PMIA) membranes as a support for WO3/g-C3N4 for the degradation of diclofenac in water

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Product

Resources

About

2D/2D Z-scheme WO₃/g-C₃N₄ heterojunctions for photocatalytic organic pollutant degradation and nitrogen fixation

2D/2D Z-scheme WO₃/g-C₃N₄ heterojunctions for photocatalytic organic pollutant degradation and nitrogen fixation