Preparation and characterization of tungsten tailing-based geopolymers

Zeng, Yili; Duan, Nan; Fu, Caiping; Liao, Dejin; Song, Xiaolan; Jin, Shengming; Cui, Kuixin

doi:10.1016/j.ceramint.2023.04.030

Cited by 16 publications

(2 citation statements)

References 45 publications

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“…However, 3 g was chosen as the optimum catalyst dosage in this study. This was due to the implementation of green chemistry, which involves diminishing the utilization of a large number of catalysts and avoiding any secondary pollutants that may be generated . Based on Figure (a,b), the photocatalytic performance of suspended C,N-TiO 2 NPs was better than the immobilized C,N-TiO 2 NP floating photocatalyst due to the available larger surface area in the suspended form, especially in the aspect of time irradiation.…”

Section: Resultsmentioning

confidence: 99%

“…This was due to the implementation of green chemistry, which involves diminishing the utilization of a large number of catalysts and avoiding any secondary pollutants that may be generated. 56 Based on Figure 5(a,b), the photocatalytic performance of suspended C,N-TiO 2 NPs was better than the immobilized C,N-TiO 2 NP floating photocatalyst due to the available larger surface area in the suspended form, especially in the aspect of time irradiation. The optimized C,N-TiO 2 NP/ alginate bead floating photocatalyst obtained 80.61% of diazinon removal within 8 h, which was slightly lesser than that of the suspended C,N-TiO 2 NPs (88.52% of diazinon removal for 4 h).…”

Section: X-ray Diffraction (Xrd) and High-resolution Transmission Ele...mentioning

confidence: 93%

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C,N-Codoped TiO₂ Nanoparticles Immobilized on Floating Alginate Beads for Diazinon Removal under Solar Light Irradiation

Mohamad Idris,

Cheong,

Smith

et al. 2023

ACS Appl. Nano Mater.

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Filtration is a critical step during wastewater treatment, in which the catalyst must be separated from the aqueous system for the next treatment. For effective separation of the catalyst, a proper strategy is demanded to overcome the filtration issue in the suspended catalyst system. Therefore, an innovative photocatalytic system with C,N-TiO 2 NPs immobilized on floating alginate beads was designed via the ionotropic gelation method to treat diazinon as a model pollutant under solar light irradiation. The synthesized C,N-TiO 2 NPs showed unique features including an anatase phase with a crystallite size of 11 ± 2.1 nm, active under the visible light region with a lower bandgap energy of 2.94 eV than 3.2 eV of bulk anatase TiO 2 , and has slower recombination of electron−hole pairs than the bulk anatase TiO 2 . The XPS analysis also confirmed that C and N were codoped into TiO 2 from the shift of binding energy for Ti 2p. SEM analysis provided evidence that many accumulated powders of the synthesized C,N-TiO 2 NPs were dispersed onto the alginate bead surface. The designed C,N-TiO 2 NP/alginate bead floating photocatalyst achieved the excellent removal of diazinon of 80.61% and a mineralization degree of 60.08% with the presence of dominant ROS (•O 2 − radicals) under solar light for 8 h. The degradation kinetics followed first-order kinetics, whereas the Langmuir isotherm model was fitted for the adsorption isotherm. It could be reused for five cycles with 76.84% diazinon removal, reflecting the great reusability of the floating photocatalyst during photodegradation. Thus, this work creates a novel designation of C,N-TiO 2 NP/ alginate bead floating photocatalysts that have great potential for application in photocatalytic wastewater treatment.

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Section: Resultsmentioning

confidence: 99%

Section: X-ray Diffraction (Xrd) and High-resolution Transmission Ele...mentioning

confidence: 93%

C,N-Codoped TiO₂ Nanoparticles Immobilized on Floating Alginate Beads for Diazinon Removal under Solar Light Irradiation

Mohamad Idris,

Cheong,

Smith

et al. 2023

ACS Appl. Nano Mater.

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Preparation and interface state of phosphate tailing-based geopolymers

Zhang,

Xie,

Xie

et al. 2024

J. Cent. South Univ.

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Synthesis and characterization of geopolymers based on phosphate mining tailings and its application for carbon dioxide and nitrogen adsorption

Freire,

da Silva,

Della Rocca

et al. 2024

Ceramics International

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Preparation and characterization of tungsten tailing-based geopolymers

Cited by 16 publications

References 45 publications

C,N-Codoped TiO₂ Nanoparticles Immobilized on Floating Alginate Beads for Diazinon Removal under Solar Light Irradiation

C,N-Codoped TiO₂ Nanoparticles Immobilized on Floating Alginate Beads for Diazinon Removal under Solar Light Irradiation

Preparation and interface state of phosphate tailing-based geopolymers

Synthesis and characterization of geopolymers based on phosphate mining tailings and its application for carbon dioxide and nitrogen adsorption

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Preparation and characterization of tungsten tailing-based geopolymers

Cited by 16 publications

References 45 publications

C,N-Codoped TiO2 Nanoparticles Immobilized on Floating Alginate Beads for Diazinon Removal under Solar Light Irradiation

C,N-Codoped TiO2 Nanoparticles Immobilized on Floating Alginate Beads for Diazinon Removal under Solar Light Irradiation

Preparation and interface state of phosphate tailing-based geopolymers

Synthesis and characterization of geopolymers based on phosphate mining tailings and its application for carbon dioxide and nitrogen adsorption

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Product

Resources

About

C,N-Codoped TiO₂ Nanoparticles Immobilized on Floating Alginate Beads for Diazinon Removal under Solar Light Irradiation

C,N-Codoped TiO₂ Nanoparticles Immobilized on Floating Alginate Beads for Diazinon Removal under Solar Light Irradiation