Efficient UV-light photocatalytic activity of TiO2@Phosphogypsum composite synthesized by sol–gel method

Mertah, Oumaima; Hajjaji, K. El; Gaidoumi, Abdelali El; Lachehab, Adil; Hassoune, Hicham; Kherbeche, Abdelhak

doi:10.1007/s11082-020-02394-6

Cited by 5 publications

(2 citation statements)

References 61 publications

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“…For treating water and air pollution, photocatalysts synthesized from heterogeneous metal and metal oxide semiconductors are frequently used. Additionally, it is proven efficient in removing organic dye pollutants and pesticides when exposed to ultraviolet (UV) light . The catalyst’s capacity to generate electron–hole pairs is considered one of the crucial factors in determining the photocatalytic activity of the catalyst, which results in the production of free radicals that may cause further reactions .…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, it is proven efficient in removing organic dye pollutants and pesticides when exposed to ultraviolet (UV) light. 12 The catalyst’s capacity to generate electron–hole pairs is considered one of the crucial factors in determining the photocatalytic activity of the catalyst, which results in the production of free radicals that may cause further reactions. 13 The most effective photocatalysis uses semiconducting nanoparticles to break down organic molecules, dangerous chemicals, bacteria, and viruses into CO 2 and H 2 O. Metal-oxide nanoparticles, such as TiO 2 , ZnO, CuO, and WO 3, are known for their excellent photocatalytic properties and have been widely used to degrade pollutants and microorganisms under UV irradiation.…”

Section: Introductionmentioning

confidence: 99%

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Visible Light Photocatalytic Degradation of Methylene Blue Dye and Pharmaceutical Wastes over Ternary NiO/Ag/TiO₂ Heterojunction

Mohammed,

Matalkeh,

Al Soubaihi

et al. 2023

ACS Omega

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Ternary NiO/Ag/TiO 2 heterojunction photocatalyst was prepared by deposition coprecipitation for visible light photocatalytic applications. Physicochemical properties of the synthesized NiO/Ag/TiO 2 composite were characterized by X-ray diffraction, Brunauer−Emmett− Teller surface area measurement method, transmission electron microscopy, energy-dispersive X-ray spectroscopy techniques, X-ray photoelectron spectroscopy technique, and ultraviolet−visible absorption spectroscopy. The results suggest that the well-dispersed small metallic silver nanoparticles (<3 nm) facilitate electron transfer and bridge nickel oxide and titanium oxide. The photocatalytic degradation and the methylene blue (MB) dye kinetics were carried out on a ternary NiO/Ag/TiO 2 composite and compared to bare TiO 2 under visible light irradiation. The results indicate that NiO/Ag/TiO 2 has superior MB photodegradation efficiency with a high reaction rate constant and low degradation time (93.15% within 60 min) compared to Ag/TiO 2 , NiO/TiO 2 , and bare TiO 2 . NiO/Ag/TiO 2 nanocomposite was also investigated for the most common pharmaceutical waste degradation and exhibited excellent degradation efficiency. The enhancement of the composite's performance could be attributed to the surface plasmonic resonance of the Ag nanoparticles, the formation of Schottky junctions at the Ag−TiO 2 and Ag−NiO interface, and the p−n heterojunction between NiO and TiO 2 . Ag NPs act as a photosynthesizer and a photocatalyst, facilitate electron transfer, shift the absorption to the visible light region, reduce the band gap of TiO 2 , suppress the electron−hole recombination, and enhance the photocatalytic activity and stability as a result.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Visible Light Photocatalytic Degradation of Methylene Blue Dye and Pharmaceutical Wastes over Ternary NiO/Ag/TiO₂ Heterojunction

Mohammed,

Matalkeh,

Al Soubaihi

et al. 2023

ACS Omega

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Silver-photodeposited TiO2-clay nanocomposite: sol–gel synthesis, characterization and CCD-optimized photocatalytic activity

et al. 2022

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Catalytic wet oxidation degradation of malachite green with Cu-coated sediment as catalyst: parameter optimization using response surface methodology

Mardi,

Tanji,

El Gaidoumi

et al. 2024

Euro-Mediterr J Environ Integr

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Efficient UV-light photocatalytic activity of TiO2@Phosphogypsum composite synthesized by sol–gel method

Cited by 5 publications

References 61 publications

Visible Light Photocatalytic Degradation of Methylene Blue Dye and Pharmaceutical Wastes over Ternary NiO/Ag/TiO₂ Heterojunction

Visible Light Photocatalytic Degradation of Methylene Blue Dye and Pharmaceutical Wastes over Ternary NiO/Ag/TiO₂ Heterojunction

Silver-photodeposited TiO2-clay nanocomposite: sol–gel synthesis, characterization and CCD-optimized photocatalytic activity

Catalytic wet oxidation degradation of malachite green with Cu-coated sediment as catalyst: parameter optimization using response surface methodology

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Efficient UV-light photocatalytic activity of TiO2@Phosphogypsum composite synthesized by sol–gel method

Cited by 5 publications

References 61 publications

Visible Light Photocatalytic Degradation of Methylene Blue Dye and Pharmaceutical Wastes over Ternary NiO/Ag/TiO2 Heterojunction

Visible Light Photocatalytic Degradation of Methylene Blue Dye and Pharmaceutical Wastes over Ternary NiO/Ag/TiO2 Heterojunction

Silver-photodeposited TiO2-clay nanocomposite: sol–gel synthesis, characterization and CCD-optimized photocatalytic activity

Catalytic wet oxidation degradation of malachite green with Cu-coated sediment as catalyst: parameter optimization using response surface methodology

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Product

Resources

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Visible Light Photocatalytic Degradation of Methylene Blue Dye and Pharmaceutical Wastes over Ternary NiO/Ag/TiO₂ Heterojunction

Visible Light Photocatalytic Degradation of Methylene Blue Dye and Pharmaceutical Wastes over Ternary NiO/Ag/TiO₂ Heterojunction