Porphyrin-graphitic carbon nitride quantum dots decorated on titanium dioxide electrospun nanofibers for photocatalytic degradation of organic pollutants

Mkhondwane, Siphumelele Thandokwazi; Matshitse, Refilwe; Nyokong, Tebello

doi:10.1080/00958972.2022.2132153

Cited by 6 publications

(1 citation statement)

References 43 publications

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“…The resulting nanofibers exhibited an enhanced photo-response relative to the unmodified ones. Mkhondwanae et al modified TiO 2 nanofibers using a Zn-5-p-carboxyphenyl-10,15,20-(tris-4-pyridyl)-porphyrin (amongst other things) and found that the nanofibers were highly active in visible light driven photocatalysis (Mkhondwane et al, 2022). Hlabangwane et al modified TiO 2 nanofibers with free base, tin (II) and indium (III) tetramethoxyporphyrins for comparison of photo-response enhancement efficiencies (Hlabangwane et al, 2023).…”

Section: Dye-photosensitized Tio 2 and Zno Nanofibersmentioning

confidence: 99%

Review of the recent advances on the fabrication, modification and application of electrospun TiO2 and ZnO nanofibers for the treatment of organic pollutants in wastewater

Mapukata,

Shingange,

Mokhena

2023

Front. Chem. Eng.

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The heightened occurrence of emerging organic pollutants (EOPs) in aquatic bodies has been the subject of global apprehension due to the toxicity they pose to the environment, humans and animals alike. The presence of EOPs has soared due to industrialization and is further exacerbated by human activities like the overuse and poor disposal of dyes, pesticides, pharmaceuticals, surfactants, personal care products and food additives. The complete treatment and removal of EOPs from industrial wastewater and sewage has remained a challenge because of their pseudo-persistence and resistance to degradation. Due to their impressive light absorption properties, high surface-area-to-volume ratio, high porosity, superior mechanical strength, electrospun titanium dioxide (TiO2) and zinc oxide (ZnO) nanofibers have been proposed for the photocatalytic treatment of EOPs. Therefore, this review first highlights the fabrication and modification methods of TiO2 and ZnO nanofibers. A systematic survey of the latest progress in the application of TiO2 and ZnO nanofibers for the degradation of EOPs is then elaborated. Thus, the main goal is to shed light and give insight to researchers on the possibilities surrounding the elimination of EOPs by applying electrospun TiO2 and ZnO semiconductor materials. In addition, the loopholes associated with fabrication and modification processes are discussed with the aim of encouraging innovation for prospective technology advancement and commercialization, as well as to enhance research efforts in wastewater treatment and environmental sustainability.

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Section: Dye-photosensitized Tio 2 and Zno Nanofibersmentioning

confidence: 99%

Review of the recent advances on the fabrication, modification and application of electrospun TiO2 and ZnO nanofibers for the treatment of organic pollutants in wastewater

Mapukata,

Shingange,

Mokhena

2023

Front. Chem. Eng.

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Catalytic Activity of Fe/Mn Porphyrins Grafted on Graphitic Carbon Nitride in the Heterogeneous Oxidation of Olefins

Rayati,

Bathaee,

Badiei

2024

Applied Organom Chemis

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Biomimetic heterogeneous catalysts were prepared by immobilization of meso‐tetrakis(4‐carboxyphenyl)porphyrinatomanganese(III) acetate (MnTCPP) and meso‐tetrakis(4‐carboxyphenyl)porphyrinatoiron(III) chloride (FeTCPP) on graphitic carbon nitride (g‐C3N4) nanosheets. The anchored catalysts were characterized by various techniques such as scanning electron microscopy, thermogravimetric analysis, powder X‐ray diffraction, ultraviolet visible, photoluminescence, flame atomic absorption, and Fourier transform infrared spectroscopy. The thermogravimetric analysis demonstrated that the prepared catalysts were thermally stable up to almost 350°C, exhibiting high thermal stability. In the following, the catalytic efficiency of the prepared nanocatalyst was also investigated for the oxidation of various olefins with hydrogen peroxide (as a green oxidant) and the effect of various parameters which may affect the catalytic efficiency was optimized. The maximum conversion (100% for α‐methylstyrene and 97% for cyclooctene) was obtained in the presence of MnTCPP@C3N4. The Mn porphyrin nanocatalyst shows higher catalytic efficiency compared to the Fe porphyrin.

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Phthalocyanine conjugated manganese ferrite nanoparticles embedded in TiO2 fibers for photo-, sono- and photosono-catalytic degradation of Rhodamine 6G

Mkhondwane,

Mgidlana,

Openda

et al. 2024

Catalysis Today

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Porphyrin-graphitic carbon nitride quantum dots decorated on titanium dioxide electrospun nanofibers for photocatalytic degradation of organic pollutants

Cited by 6 publications

References 43 publications

Review of the recent advances on the fabrication, modification and application of electrospun TiO2 and ZnO nanofibers for the treatment of organic pollutants in wastewater

Review of the recent advances on the fabrication, modification and application of electrospun TiO2 and ZnO nanofibers for the treatment of organic pollutants in wastewater

Catalytic Activity of Fe/Mn Porphyrins Grafted on Graphitic Carbon Nitride in the Heterogeneous Oxidation of Olefins

Phthalocyanine conjugated manganese ferrite nanoparticles embedded in TiO2 fibers for photo-, sono- and photosono-catalytic degradation of Rhodamine 6G

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