<i>Z</i>-scheme 2D-m-BiVO<sub>4</sub> networks decorated by a g-CN nanosheet heterostructured photocatalyst with an excellent response to visible light

Ahmed, Toheed; Ammar, Muhammad; Saleem, Aimen; Zhang, Hongling; Xu, Hongbin

doi:10.1039/c9ra09473c

Cited by 27 publications

(16 citation statements)

References 41 publications

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“…Reusability tests were conducted for several times, and as shown in Figure 7, the photocatalytic activities of BiVO 4 /RGO‐TNT‐10 towards imidacloprid were relatively stable after 6 times reuse, and the relative degradation efficiency was about 90 % compared with the first experiment, indicating that the catalyst had desirable stability. Other researches have also proved that when BiVO 4 composited with other materials, such as g‐CN or carbon fibers, outstanding durability would be reached [57,58] …”

Section: Resultsmentioning

confidence: 96%

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Preparation of BiVO₄/RGO‐TNT Nanomaterials for Efficient and Recyclable Photocatalysis of Imidacloprid Insecticide

et al. 2022

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The photocatalytic composites based on BiVO4, TiO2 nanotubes (TNT) and reduced graphene oxide (RGO) were synthesized by a one‐step hydrothermal synthesis method. The properties and structures of the samples were characterized by SEM, XRD, UV‐Vis DRS, Raman spectroscopy, photoluminescence spectroscopy and XPS. The effects of RGO‐TNT loading, pH, and dosage of catalysts on degradation efficiency were tested. The best removal results were occured on the condition that loading amount of RGO‐TNT was 10 %, solution pH 10, and catalyst dosage was 1.4 g L−1. The obtained ternary composite with 10 wt% RGO‐TNT exhibited a significant enhancement in photocatalytic efficiency due to the lower band gap with enhanced light absorption and a suppression in the recombination rates of the photogenerated charge carriers, and about 73 % of imidacloprid was degraded within 30 min under UV irradiation. Furthermore, BiVO4/RGO‐TNT‐10 can be reused for 6 times without obvious catalysis loss. Trapping experiments showed that hydroxyl radicals were the main active species in the imidacloprid photocatalytic degradation, and a possible photocatalytic mechanism was proposed based on the results of trapping experiments.

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Section: Resultsmentioning

confidence: 96%

“…Other researches have also proved that when BiVO 4 composited with other materials, such as g-CN or carbon fibers, outstanding durability would be reached. [57,58]…”

Section: Reusability Of Bivo 4 /Rgo-tntmentioning

confidence: 99%

Preparation of BiVO₄/RGO‐TNT Nanomaterials for Efficient and Recyclable Photocatalysis of Imidacloprid Insecticide

et al. 2022

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“…C1s showed three main binding energies, of which 284.8 eV was the typical sp2 hybridization of the graphite phase (C=C bond peak position), and 288.7 eV corresponded to the C–N–C bond in the structure. In addition, 286.5 eV corresponded to the exocyclic C–O of carbon–nitrogen polymer materials [ 36 ]. Figure S6c shows the N1s binding energy peaks at 397.3 eV, 398.2 eV, and 401.9 eV.…”

Section: Resultsmentioning

confidence: 99%

Preparation of High-Porosity B-TiO2/C3N4 Composite Materials: Adsorption–Degradation Capacity and Photo-Regeneration Properties

Guo

Rao

Shi

2022

IJERPH

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Adsorption can quickly remove pollutants in water, while photocatalysis can effectively decompose organic matter. B-TiO2/g-C3N4 ternary composite photocatalytic materials were prepared by molten method, and their adsorption–degradation capability under visible light conditions was discussed. The morphology of the B-TiO2/g-C3N4 materials was inspected by SEM, TEM, BET, and EDS, and the results showed that close interfacial connections between TiO2 and g-C3N4, which are favorable for charge transfer between these two semiconductors, formed heterojunctions with suitable band structure which was contributed by the molten B2O3. Meanwhile, the molten B2O3 effectively increased the specific surface area of TiO2/C3N4 materials, thereby increasing the active sites and reducing the recombination of photogenerated electron–hole pairs and improving the photocatalytic degradation abilities of TiO2 and g-C3N4. Elsewhere, the crystal structure analysis (XRD, XPS, FTIR) results indicated that the polar -B=O bond formed a new structure with TiO2 and g-C3N4, which is not only beneficial for inhibiting the recombination of electron holes but also improving the photocatalytic activity. By removal experiment, the adsorption and degradation performances of B-TiO2/g-C3N4 composite material were found to be 8.5 times and 3.4 times higher than that of g-C3N4. Above all, this study prepared a material for removing water pollutants with high efficiency and provides theoretical support and experimental basis for the research on the synergistic removal of pollutants by adsorption and photocatalysis.

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“…However, this area is mostly explored for dye degradation and water splitting and less so for CO 2 reduction. [21,[28][29][30][31][32][33][34][35] For example, a CO 3 O 4 -BiVO 4 /g-CN z-scheme has shown a 31.5X increase in reaction rate for dye degradation, [36] while a BiVO 4 /g-CN z-scheme has shown a 4.5X increase in degradation rate. [32] These results show promising applications for expansion of this research into solar fuels generation.…”

Section: Introductionmentioning

confidence: 99%

Solar Fuel Generation by 2D Self‐Assembled g‐C₃N₄/BiVO₄ Z‐Scheme

LaChance,

Adeli,

Taghipour

2023

Solar RRL

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Graphitic carbon nitride (g‐CN) is a promising photocatalyst for solar fuel generation due to its medium band gap and facile synthesis from earth‐abundant materials. However, low charge carrier mobility and high charge recombination have hampered the observed rate of H2 evolution and CO2 reduction. Herein, an electrostatically self‐assembled 2D Z‐scheme heterojunction between g‐CN and bismuth vanadate (BiVO4) is investigated with and without reduced graphene oxide (rGO) acting as an electron transfer mediator to speed charge carrier mobility and hamper charge recombination. Protonation of the g‐CN surface allow for self‐assembly between 2D sheets of g‐CN, rGO, and BiVO4. The mass ratio between g‐CN and BiVO4 is incrementally adjusted to optimize synergistic charge transportation effects versus shadowing effects of multicomponent photocatalysts. Further, a selectivity effect is observed across mass ratios of photocatalyst constituents, allowing tuning of photocatalyst yield.

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Z-scheme 2D-m-BiVO₄ networks decorated by a g-CN nanosheet heterostructured photocatalyst with an excellent response to visible light

Abstract: For economical water splitting and degradation of toxic organic dyes, the development of inexpensive, efficient, and stable photocatalysts capable of harvesting visible light is essential.

Cited by 27 publications

References 41 publications

Preparation of BiVO₄/RGO‐TNT Nanomaterials for Efficient and Recyclable Photocatalysis of Imidacloprid Insecticide

Preparation of BiVO₄/RGO‐TNT Nanomaterials for Efficient and Recyclable Photocatalysis of Imidacloprid Insecticide

Preparation of High-Porosity B-TiO2/C3N4 Composite Materials: Adsorption–Degradation Capacity and Photo-Regeneration Properties

Solar Fuel Generation by 2D Self‐Assembled g‐C₃N₄/BiVO₄ Z‐Scheme

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Z-scheme 2D-m-BiVO4 networks decorated by a g-CN nanosheet heterostructured photocatalyst with an excellent response to visible light

Abstract: For economical water splitting and degradation of toxic organic dyes, the development of inexpensive, efficient, and stable photocatalysts capable of harvesting visible light is essential.

Cited by 27 publications

References 41 publications

Preparation of BiVO4/RGO‐TNT Nanomaterials for Efficient and Recyclable Photocatalysis of Imidacloprid Insecticide

Preparation of BiVO4/RGO‐TNT Nanomaterials for Efficient and Recyclable Photocatalysis of Imidacloprid Insecticide

Preparation of High-Porosity B-TiO2/C3N4 Composite Materials: Adsorption–Degradation Capacity and Photo-Regeneration Properties

Solar Fuel Generation by 2D Self‐Assembled g‐C3N4/BiVO4 Z‐Scheme

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Product

Resources

About

Z-scheme 2D-m-BiVO₄ networks decorated by a g-CN nanosheet heterostructured photocatalyst with an excellent response to visible light

Preparation of BiVO₄/RGO‐TNT Nanomaterials for Efficient and Recyclable Photocatalysis of Imidacloprid Insecticide

Preparation of BiVO₄/RGO‐TNT Nanomaterials for Efficient and Recyclable Photocatalysis of Imidacloprid Insecticide

Solar Fuel Generation by 2D Self‐Assembled g‐C₃N₄/BiVO₄ Z‐Scheme