Urea and green tea like precursors for the preparation of g-C3N4 based carbon nanomaterials (CNMs) composites as photocatalysts for photodegradation of pollutants under UV light irradiation

Djoko, Simon Yves Tameu; Bashiri, Hadis; Njoyim, Estella Tamungang; Arabameri, Mojtaba; Djepang, Serges A.; Tamo, Arnaud Kamdem; Laminsi, Samuel; Tasbihi, Minoo; Schwarze, Michael; Schomäcker, Reinhard

doi:10.1016/j.jphotochem.2020.112596

Cited by 29 publications

(11 citation statements)

References 51 publications

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“…These characteristic curves for mesoporous materials stem from the difference in the curvatures of the meniscus during adsorption and desorption with a capillary condensation. The pore size distribution curves of both materials show a maximum at a radius of 1.9 nm, which means that the materials were mesoporous [31,32]. Specific surface areas were measured to reveal any change in the structural features of carbon nitride before and after the exfoliation.…”

Section: Introductionmentioning

confidence: 99%

Efficient Advanced Oxidation Process (AOP) for Photocatalytic Contaminant Degradation Using Exfoliated Metal-Free Graphitic Carbon Nitride and Visible Light-Emitting Diodes

et al. 2021

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The photocatalytic performance of metal-free graphitic carbon nitride (g-C3N4) was examined using visible light-emitting diodes (LEDs). A comparative and parametric study was conducted using the photocatalytic degradation of phenol as a model reaction. The g-C3N4 photocatalyst was synthesized from melamine using thermal condensation, followed by a thermal exfoliation that increases the catalyst surface area from 11 to 170 m2/g. Different characterization techniques, namely X-ray powder diffraction, X-ray photoelectron spectroscopy, nitrogen adsorption using the Brunauer–Emmett–Teller method, ultraviolet-visible (UV–vis) spectroscopy, transmission electron microscopy, photoluminescence spectroscopy (PL), and zeta potential analysis, were used to characterize the photocatalyst. A comparison of the photodegradation experiments conducted with a full-spectrum xenon lamp and a custom-made single-wavelength LED immersion lamp showed that the photocatalyst performance was better with the LED immersion lamp. Furthermore, a comparison of the performance of exfoliated and bulk g-C3N4 revealed that exfoliated g-C3N4 completely degraded the pollutant in 90 min, whereas only 25% was degraded with bulk g-C3N4 in 180 min because the exfoliated g-C3N4 enhances the availability of active sites, which promotes the degradation of phenol. Experiments conducted at different pH have shown that acidic pH favors the degradation process. The exfoliated g-C3N4 has shown high photocatalytic performance in the photodegradation of other phenolic compounds, such as catechol, m-cresol, and xylenol, as well.

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Section: Introductionmentioning

confidence: 99%

Efficient Advanced Oxidation Process (AOP) for Photocatalytic Contaminant Degradation Using Exfoliated Metal-Free Graphitic Carbon Nitride and Visible Light-Emitting Diodes

et al. 2021

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“…These are the building blocks for carbon nitride and were observed to decrease with the addition of glucose. 35 Oxygen doping has irrefutably affected the C–N and N–H bonds, as evidenced by the transformation and shifting of these bands. These findings are in agreement with the XRD data, which confirmed the alterations in the triazine structure.…”

Section: Resultsmentioning

confidence: 99%

Insight into the photodegradation mechanism of bisphenol-A by oxygen doped mesoporous carbon nitride under visible light irradiation and DFT calculations

et al. 2022

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“…Further, each sample shows the characteristic peaks of the photocatalyst powder. The two carbon nitride photocatalysts, mp-CN and Pt@exf-CN show a peak at about 27.4°, corresponding to the (002) plane [9,19]. Although the exf-CN is covered with Pt, the concentration is too low to show a peak in XRD.…”

Section: Photocatalyst Immobilizationmentioning

confidence: 99%

Screening of Heterogeneous Photocatalysts for Water Splitting

Schwarze

Thiel

Rana

et al. 2022

Chemie Ingenieur Technik

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In this contribution, a simple method for the screening of photocatalytic activity of catalyst materials is presented. The method is based on two steps: the immobilization of the photocatalyst and the subsequent testing of their photocatalytic activity, using the gas evolution at the solid-liquid interface. Up to four catalysts can be tested under the same conditions. The observed gas evolution for selected photocatalysts is consistent with trends reported in the literature from conventional photocatalytic reactors.

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Urea and green tea like precursors for the preparation of g-C3N4 based carbon nanomaterials (CNMs) composites as photocatalysts for photodegradation of pollutants under UV light irradiation

Cited by 29 publications

References 51 publications

Efficient Advanced Oxidation Process (AOP) for Photocatalytic Contaminant Degradation Using Exfoliated Metal-Free Graphitic Carbon Nitride and Visible Light-Emitting Diodes

Efficient Advanced Oxidation Process (AOP) for Photocatalytic Contaminant Degradation Using Exfoliated Metal-Free Graphitic Carbon Nitride and Visible Light-Emitting Diodes

Insight into the photodegradation mechanism of bisphenol-A by oxygen doped mesoporous carbon nitride under visible light irradiation and DFT calculations

Screening of Heterogeneous Photocatalysts for Water Splitting

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