Double-template-regulated bionic mineralization for the preparation of flower-like BiOBr/carbon foam/PVP composite with enhanced stability and visible-light-driven catalytic activity

Cai, Xuhui; Zhang, Yanjuan; Zhang, Tongtong; Chen, Meifei; Hu, Huayu; Huang, Zuqiang; Liang, Jing; Qin, Yuben

doi:10.1016/j.apsusc.2021.149708

Cited by 37 publications

(11 citation statements)

References 57 publications

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“…5(b) was deconvoluted into two peaks located at about 529.9 and 530.8 eV which corresponded to BiO bonds and oxygen‐containing species adsorbed on surface, respectively 43 . In comparison with Bi 4 O 5 Br 2 , the Br 3d 5/2 and 3d 3/2 peaks of BC2 shifted from 68.7 and 69.8 eV to higher 68.8 and 69.9 eV, may due to the decreased electron cloud density of Bi 4 O 5 Br 2 after contact with BiOCl 44,45 . On the contrary, the Cl 2p 3/2 and 2p 1/2 peaks of BC2 shifted to lower binding energies compared with those of BiOCl.…”

Section: Resultsmentioning

confidence: 99%

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Novel Z‐scheme 2D/2D Bi₄O₅Br₂/BiOCl heterojunction with enhanced photocatalytic activity for RhB degradation

Zhang

Xiao

2022

J of Chemical Tech & Biotech

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BACKGROUND With the rapid development of industry and commerce, organic pollutants such as RhB are detrimental to human health and living environment. As a promising technology for treating the organic pollutants in wastewater, photocatalysis technology has received worldwide attention. For practical application, a novel photocatalyst with superior photocatalytic activity should be developed. RESULTS A novel Bi4O5Br2/BiOCl (BC2) heterojunction photocatalyst with 2D/2D structure was fabricated via a facile one‐pot solvothermal method. Compared with pure Bi4O5Br2 and BiOCl, the BC2 heterojunction exhibited enhanced photocatalytic performance which reached 91% photodegradation efficiency for RhB under 120 min irradiation of simulated solar‐light at pH 7. And 99% RhB was degraded by BC2 under 60 min irradiation at pH 6. CONCLUSION According to experimental and characterization analytical results, the enhanced photocatalytic activity of Bi4O5Br2/BiOCl (BC2) heterojunction could be attributed to the following four points: (i) The BC2 heterojunction with excellent visible light response could effectively utilize the simulated solar‐light. (ii) The more negative surface electronegativity of BC2 favored the adsorption of RhB during the photodegradation process. (iii) The 2D/2D BC2 heterojunction had large interface region and internal electric field, thus it displayed superior carriers transfer capability and enhanced charge separation efficiency. (iv) The carriers transfer mechanism of Z‐scheme could hinder the recombination of photoinduced charge carriers and endow this photocatalyst with enough redox capacity to degrade RhB. Moreover, slightly acidic condition (pH 6) could promote degradation of RhB, due to the enhanced adsorption capacity of BC2 heterojunction. © 2022 Society of Chemical Industry (SCI).

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Section: Resultsmentioning

confidence: 99%

“…43 In comparison with Bi 4 O 5 Br 2 , the Br 3d 5/2 and 3d 3/2 peaks of BC2 shifted from 68.7 and 69.8 eV to higher 68.8 and 69.9 eV, may due to the decreased electron cloud density of Bi 4 O 5 Br 2 after contact with BiOCl. 44,45 On the contrary, the Cl 2p 3/2 and 2p 1/2 Figure 1. XRD patterns of as-prepared samples.…”

Section: Characterization Of Samplesmentioning

confidence: 97%

Novel Z‐scheme 2D/2D Bi₄O₅Br₂/BiOCl heterojunction with enhanced photocatalytic activity for RhB degradation

Zhang

Xiao

2022

J of Chemical Tech & Biotech

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“…The instruments and detailed characterization conditions are given in the Supporting Information. Furthermore, Fourier transform infrared spectroscopy (FT-IR), UV–vis diffuse reflectance spectra (DRS), N 2 adsorption–desorption, and X-ray photoelectron spectroscopy (XPS) were carried out according to our previous work …”

Section: Methodsmentioning

confidence: 99%

“…Furthermore, Fourier transform infrared spectroscopy (FT-IR), UV−vis diffuse reflectance spectra (DRS), N 2 adsorption− desorption, and X-ray photoelectron spectroscopy (XPS) were carried out according to our previous work. 41 2.4. Photocatalytic Degradation Test.…”

Section: Methodsmentioning

confidence: 99%

“…As shown in Figure 6c, the as-prepared samples were all confirmed as n-type semiconductors owing to the positive slopes in the Mott−Schottky plots, and the flat-band potentials were estimated to be 0.25, 0.29, 0.40, 0.39, and 0.30 eV (vs Ag/AgCl) for TiO 2 , Cl-TiO 2 , 0.4Cl-TiO 2 /C, 0.5Cl-TiO 2 /C, and 0.6Cl-TiO 2 /C, respectively. Based on the reports of Li 9 and Wang, 41 the conduction band potentials (E CB ) of TiO 2 , Cl-TiO 2 , 0.4Cl-TiO 2 /C, 0.5Cl-TiO 2 /C, and 0.6Cl-TiO 2 /C were evaluated to be −0.15, −0.19, −0.30, −0.29, and −0.20 eV, respectively, vs NHE, and their valence band (VB) edges were calculated to be 2.74, 2.62, 2.44, 2.48, and 2.58 eV, respectively. The bandgap structures of these catalysts are presented in Figure 6d.…”

Section: Methodsmentioning

confidence: 99%

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In Situ One-Pot Synthesis of C-Decorated and Cl-Doped Sea-Urchin-like Rutile Titanium Dioxide with Highly Efficient Visible-Light Photocatalytic Activity

Huang

Zhang

Cai

et al. 2021

ACS Appl. Mater. Interfaces

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Titanium dioxide (TiO 2 ) that offers high light-harvesting capacity and efficient charge separation holds great promise in photocatalysis. In this work, an in situ one-pot hydrothermal synthesis was explored to prepare a C-decorated and Cl-doped sea-urchin-like rutile TiO 2 (Cl-TiO 2 /C). The growth of sea-urchin-like 3D hierarchical nanostructures was governed by a mechanism of nucleation and nuclei growth−dissolution−recrystallization growth from time-dependent morphology evolution. The crystal morphology and the content of Cl and C could be controlled by the volume ratio of HCl to TBOT. Systematic studies indicated that the 0.4Cl-TiO 2 /C sample (the volume ratio of HCl to TBOT was 0.4) exhibited the highest visible-light photocatalytic activity for the degradation of rhodamine B, with kinetic rate constant (k) of 0.0221 min −1 , being 6.5 and 3.75 times higher than that of TiO 2 and Cl-TiO 2 . The enhanced photocatalytic performance could be attributed to the high charge separation and transfer efficiency induced by Cl-doping and C decoration and the excellent light-harvesting capacity caused by its sea-urchin-like nanostructure. Moreover, the 0.4Cl-TiO 2 /C sample exhibited good reusability and excellent structural stability for five cycles. This facile one-pot approach provides new insight for the preparation of a TiO 2 -based photocatalyst with excellent photocatalytic performance for potential application in practical wastewater treatment.

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Review On Strategies For the Design and Synthesis of Flower‐Like Bi₂WO₆ and BiOX (X=F, Cl, Br, I) Composites for Photocatalytic Environmental Remediation

Deshmukh,

Suresh,

Bhuse

et al. 2024

ChemistrySelect

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In latest events, water pollution has posed an immense threat, and its sustainable treatment is a topic of concern. Among myriad of water treatment, research community has lensed towards sustainable heterogeneous photocatalysis especially, inorganic semiconductors. Bismuth tungstate a pristine Aurivillius compound with unique crystal structure, exceptional photochemical stability, and strong redox abilities but minimum visible light absorption and quick carrier recombination are its caveats, these caveats are circumvented by synthesizing BiOX (X=F, Cl, Br and I) composites with surface modifiers, doping with hetero atoms (metals and non‐metals), construction of the heterojunction and amalgamation of carbon materials. The heart of this review is strategic engineering of flower‐like morphology photocatalyst synthesis and optical properties, it also discusses the charge transfer kinetics, photocatalytic performance, and durability. The flower‐like morphology highlighted in this review is due to its ability to harvest light, providing larger specific surface area which introduces more active sites and efficient excitons generation. The comprehensive tabulated data in this review will help the actively engaged research community in Bismuth heterogenous photocatalysis. It also sheds light on the future view of environmental remediation via photocatalytic developments.

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Double-template-regulated bionic mineralization for the preparation of flower-like BiOBr/carbon foam/PVP composite with enhanced stability and visible-light-driven catalytic activity

Cited by 37 publications

References 57 publications

Novel Z‐scheme 2D/2D Bi₄O₅Br₂/BiOCl heterojunction with enhanced photocatalytic activity for RhB degradation

Novel Z‐scheme 2D/2D Bi₄O₅Br₂/BiOCl heterojunction with enhanced photocatalytic activity for RhB degradation

In Situ One-Pot Synthesis of C-Decorated and Cl-Doped Sea-Urchin-like Rutile Titanium Dioxide with Highly Efficient Visible-Light Photocatalytic Activity

Review On Strategies For the Design and Synthesis of Flower‐Like Bi₂WO₆ and BiOX (X=F, Cl, Br, I) Composites for Photocatalytic Environmental Remediation

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Double-template-regulated bionic mineralization for the preparation of flower-like BiOBr/carbon foam/PVP composite with enhanced stability and visible-light-driven catalytic activity

Cited by 37 publications

References 57 publications

Novel Z‐scheme 2D/2D Bi4O5Br2/BiOCl heterojunction with enhanced photocatalytic activity for RhB degradation

Novel Z‐scheme 2D/2D Bi4O5Br2/BiOCl heterojunction with enhanced photocatalytic activity for RhB degradation

In Situ One-Pot Synthesis of C-Decorated and Cl-Doped Sea-Urchin-like Rutile Titanium Dioxide with Highly Efficient Visible-Light Photocatalytic Activity

Review On Strategies For the Design and Synthesis of Flower‐Like Bi2WO6 and BiOX (X=F, Cl, Br, I) Composites for Photocatalytic Environmental Remediation

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Novel Z‐scheme 2D/2D Bi₄O₅Br₂/BiOCl heterojunction with enhanced photocatalytic activity for RhB degradation

Novel Z‐scheme 2D/2D Bi₄O₅Br₂/BiOCl heterojunction with enhanced photocatalytic activity for RhB degradation

Review On Strategies For the Design and Synthesis of Flower‐Like Bi₂WO₆ and BiOX (X=F, Cl, Br, I) Composites for Photocatalytic Environmental Remediation