Visible-light photocatalytic degradation of acid violet 7 dye in a continuous annular reactor using ZnO/PPy photocatalyst: Synthesis, characterization, mass transfer effect evaluation and kinetic analysis

González-Casamachin, Diego A.; Rosa, Javier Rivera De la; Lucio–Ortiz, Carlos J.; Rio, David De Haro De A.; Martínez-Vargas, Daniela Xulú; Flores-Escamilla, Gerardo A.; Dávila-Guzmán, Nancy E.; Ovando‐Medina, Víctor M.; Moctezuma-Velazquez, Edgar

doi:10.1016/j.cej.2019.05.032

Cited by 69 publications

(15 citation statements)

References 43 publications

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“…Photocatalysis has been considered to be one of the promising technologies for degradation of BPA (He et al, 2019a ; Sabouni and Gomaa, 2019 ). Among various semiconductor metal oxides, ZnO is one of the most extensively studied photocatalysts used to degrade dyes such as acid violet (González-Casamachin et al, 2019 ), rhodamine B (Hao et al, 2019 ; Lops et al, 2019 ), reactive red (Rezk et al, 2019 ), etc. Nevertheless, some limitations such as ultraviolet light response and low quantization efficiency hinder its practical application.…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of Porous ZnO Nanoparticles Efficient for Photocatalytic Degradation of Biomass-Derived Bisphenol A Under Simulated Sunlight Irradiation

Wang

Kang

Yang

et al. 2021

Front. Bioeng. Biotechnol.

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Bisphenol A (BPA) produced from biomass is a typical endocrine disrupting compound that is carcinogenic and genotoxic and can be accumulated in water due to its extensive use and difficult degradation. In this study, the porous ZnO photocatalyst with core-shell structure and large surface area was successfully developed for the efficient photocatalytic degradation of BPA. The various effects of calcination temperatures, BPA concentrations, ZnO dosages, pH and inorganic ions on the degradation performance were systemically studied. The results showed that 99% degradation of BPA was achieved in 1 h using the porous ZnO calcined at 550°C under the conditions of 30 mg/L BPA, 1 g/L ZnO, and pH of 6.5. Besides, the inhibition effects of anions for the photocatalytic removal of BPA decreased in the order of H2PO4- > HCO3- > SO42- > Cl−, while the cations K+, Ca2+, and Na+ had little effect on the photocatalytic degradation of BPA. The results of scavenging experiments showed that h+, ·O2-, and e− played the key role in the photocatalytic degradation process. Finally, the main pathways of BPA degradation were proposed based on ten intermediates found in the degradation process. This work may provide a good guideline to degrade various endocrine disrupting compounds in wastewater treatment.

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Section: Introductionmentioning

confidence: 99%

Facile Synthesis of Porous ZnO Nanoparticles Efficient for Photocatalytic Degradation of Biomass-Derived Bisphenol A Under Simulated Sunlight Irradiation

Wang

Kang

Yang

et al. 2021

Front. Bioeng. Biotechnol.

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“…The TiO 2 /PPy surface hybrids linked by N-Ti covalent bonds obtained excellent photocurrent signals and 4.5 times superior than pure TiO 2 for MO photodegradation performance, which proved again that the tight combination of the surface hybrid interface is conducive to charge transfer and interface stability. 103 In addition to the application of PPy surface hybridization to oxidative degradation of organic pollutants, 106,[206][207][208] its photogenerated electrons can also be used for reduction reactions. For example, the activity of reducing Cr(VI) to Cr(III) is increased by 3.45 times indicating that the photogenerated electrons and holes separated by the interface are effectively transported to the surface of inorganic semiconductor and PPy, respectively.…”

Section: Polypyrrolementioning

confidence: 99%

Photocatalytic activity enhanced via surface hybridization

Guo

et al. 2020

Carbon Energy

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Surface hybrid inorganic semiconductors photocatalysts with π conjugated structure have recently been widely used in the field of photocatalytic environmental remediation and energy conversion. Surface hybridization is considered to be an efficient way to significantly enhance the photocatalytic activity by several times, completely inhibit photocorrosion of inorganic photocatalysts and expand the spectral response range of photocatalysts. This review provides a comprehensive overview of the surface hybridization definition, the principle of enhancing photocatalytic performance and the control factors of surface hybridization to promote photoactivity. Summarize the preparation and structural identification method of the surface hybrid photocatalyst. Special emphasis is placed on the various photocatalytic system construction of surface hybridization. The development of surface hybrid photocatalysts for pollutant degradation and energy conversion are further presented. Finally, the challenges and future development prospects of surface hybridization in photocatalysis are discussed. We hope this critical review can provide a clear picture of the state‐of‐the‐art achievements and facilitate the applications of surface hybrid photocatalysts in environmental remediation and energy conversion.

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“…where ε is the porosity of the catalyst and τ is the tortuosity of the pore, the values were taken as 0.4 and 3 respectively according to work of Zavrazhnov et al [19] and our past work [20]. The D p is the pore diffusivity and can be calculated as:…”

Section: Kinetic Testsmentioning

confidence: 99%

Thermocatalytic degradation of lignin monomer coniferyl aldehyde by aluminum–boron oxide catalysts

Pedroza-Solís¹,

Rosa²,

Lucio–Ortiz³

et al. 2021

Comptes Rendus. Chimie

Self Cite

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Two aluminum-boron oxide catalysts were produced via a sol-gel method at pH 3 and 4 during the solution mixing step of the synthesis, these materials were employed in thermocatalytic degradation of coniferyl aldehyde (CA), which was used as a probe molecule of the lignin polymeric molecule and is comprised of the repetitive monomers coniferyl, sinapyl, and paracoumaryl. The two * Corresponding author.

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Visible-light photocatalytic degradation of acid violet 7 dye in a continuous annular reactor using ZnO/PPy photocatalyst: Synthesis, characterization, mass transfer effect evaluation and kinetic analysis

Cited by 69 publications

References 43 publications

Facile Synthesis of Porous ZnO Nanoparticles Efficient for Photocatalytic Degradation of Biomass-Derived Bisphenol A Under Simulated Sunlight Irradiation

Facile Synthesis of Porous ZnO Nanoparticles Efficient for Photocatalytic Degradation of Biomass-Derived Bisphenol A Under Simulated Sunlight Irradiation

Photocatalytic activity enhanced via surface hybridization

Thermocatalytic degradation of lignin monomer coniferyl aldehyde by aluminum–boron oxide catalysts

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