Continuous surface Z-Scheme and Schottky heterojunction Au/La2Ti2O7/Ag3PO4 catalyst with boosted charge separation through dual channels for excellent photocatalysis: Highlight influence factors regulation and catalytic system applicability

Chen, Xiaojuan; Xu, Zhao‐Dong; Chen, Jieming; Liang, Yao; Xie, Wucheng; He, Jijun; Li, Ning; Li, Jiesen; Xu, Song; Zhu, Yanping; Chen, Xin; Zhu, R. S.

doi:10.1016/j.seppur.2023.123414

Cited by 17 publications

(1 citation statement)

References 91 publications

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“…The smaller the arc radius of Nyquist plots, the smaller the charge transfer resistance, resulting in faster electron transfer and a higher separation efficiency of electrons and holes. 48,49 From Figure 2e, it is clear that the Nyquist plot of STMF had the largest arc radius, whereas SF-4 had the smallest. Thus, after coating SiO 2 on STMF, the arc radius decreased, and as a result, the separation efficiency of charge carriers increased and photocatalytic activity was enhanced.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Precise Tuning of SiO₂ Thickness in SiO₂@Sr_0.4Ti_0.4Mg_0.2Fe₂O_4.4 Core–Shell Nanocomposites for Augmenting Photocatalytic and Antibacterial Activity

Kaur,

Vyas

2023

ACS Sustainable Chem. Eng.

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Core–shell heterostructures have attracted great concern as promising visible light-driven photocatalysts. Herein, core–shell nanocomposites of SiO2@Sr0.4Ti0.4Mg0.2Fe2O4.4 with varying SiO2 thickness were rationally designed. Effect of modulating the SiO2 thickness on the structural and optical properties was studied. Homogenous SiO2 layer of varying thickness was coated over Sr0.4Ti0.4Mg0.2Fe2O4.4 NPs. HRTEM and XRD analyses confirmed the successful formation of core–shell nanocomposites. The photocatalytic performance was evaluated by using tetracycline hydrochloride, azure-B, Staphylococcus aureus, and Escherichia coli as model pollutants. Maximum enhancement in photocatalytic activity was observed in a core–shell nanocomposite having an average shell thickness of 24 nm. The results were supported by its higher porosity and specific surface area, along with a narrowed band gap and fluorescence quenching. The formation of the core–shell heterojunction promoted charge separation. Under the optimized conditions of irradiation time, pH, and dose, its degradation efficiency was 96.5% for tetracycline hydrochloride, 96.3% for azure-B, 97.1% for S. aureus, and 95.4% for E. coli. Hydroxyl radicals and holes played a vital role in the degradation process. The photocatalytic parameters were optimized using Box–Behnken statistical methodology. This work bears broad potential for fabricating an efficient and high-performance photocatalyst of SiO2 with ferrite having a core–shell heterostructure.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Precise Tuning of SiO₂ Thickness in SiO₂@Sr_0.4Ti_0.4Mg_0.2Fe₂O_4.4 Core–Shell Nanocomposites for Augmenting Photocatalytic and Antibacterial Activity

Kaur,

Vyas

2023

ACS Sustainable Chem. Eng.

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Dual Z-scheme BiOI/Bi2S3/MgIn2S4 composite photocatalyst for effective photocatalytic degradation of Congo red

Li,

Zhao,

Huang

et al. 2023

Environ Sci Pollut Res

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Three-dimensional porous La(OH)3/g-C3N4 adsorption-photocatalytic synergistic removal of tetracycline

Wang,

Liu,

Liu

et al. 2024

Environ Sci Pollut Res

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Continuous surface Z-Scheme and Schottky heterojunction Au/La2Ti2O7/Ag3PO4 catalyst with boosted charge separation through dual channels for excellent photocatalysis: Highlight influence factors regulation and catalytic system applicability

Cited by 17 publications

References 91 publications

Precise Tuning of SiO₂ Thickness in SiO₂@Sr_0.4Ti_0.4Mg_0.2Fe₂O_4.4 Core–Shell Nanocomposites for Augmenting Photocatalytic and Antibacterial Activity

Precise Tuning of SiO₂ Thickness in SiO₂@Sr_0.4Ti_0.4Mg_0.2Fe₂O_4.4 Core–Shell Nanocomposites for Augmenting Photocatalytic and Antibacterial Activity

Dual Z-scheme BiOI/Bi2S3/MgIn2S4 composite photocatalyst for effective photocatalytic degradation of Congo red

Three-dimensional porous La(OH)3/g-C3N4 adsorption-photocatalytic synergistic removal of tetracycline

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Continuous surface Z-Scheme and Schottky heterojunction Au/La2Ti2O7/Ag3PO4 catalyst with boosted charge separation through dual channels for excellent photocatalysis: Highlight influence factors regulation and catalytic system applicability

Cited by 17 publications

References 91 publications

Precise Tuning of SiO2 Thickness in SiO2@Sr0.4Ti0.4Mg0.2Fe2O4.4 Core–Shell Nanocomposites for Augmenting Photocatalytic and Antibacterial Activity

Precise Tuning of SiO2 Thickness in SiO2@Sr0.4Ti0.4Mg0.2Fe2O4.4 Core–Shell Nanocomposites for Augmenting Photocatalytic and Antibacterial Activity

Dual Z-scheme BiOI/Bi2S3/MgIn2S4 composite photocatalyst for effective photocatalytic degradation of Congo red

Three-dimensional porous La(OH)3/g-C3N4 adsorption-photocatalytic synergistic removal of tetracycline

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Product

Resources

About

Precise Tuning of SiO₂ Thickness in SiO₂@Sr_0.4Ti_0.4Mg_0.2Fe₂O_4.4 Core–Shell Nanocomposites for Augmenting Photocatalytic and Antibacterial Activity

Precise Tuning of SiO₂ Thickness in SiO₂@Sr_0.4Ti_0.4Mg_0.2Fe₂O_4.4 Core–Shell Nanocomposites for Augmenting Photocatalytic and Antibacterial Activity