Fabrication of novel Bi2MoO6/N-rGO catalyst for the efficient photocatalytic degradation of harmful dyes

Kasinathan, Maruthathurai; Thiripuranthagan, Sivakumar; Sivakumar, A.; Ranganathan, Sudhakar; Vembuli, Thanigaivel; Kumaravel, S.; Erusappan, Elangovan

doi:10.1016/j.materresbull.2020.110782

Cited by 55 publications

(7 citation statements)

References 62 publications

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“…where A, E g , ν, h, and α are a constant, the band gap, the optical frequency, the Planck constant, and the absorption coefficient, respectively; n was assumed to be 4. 30 The band gaps estimated from the Tauc plot were 2.7, 2.1, 2.2, and 2.45 eV for pure Bi 2 MoO 6 and the Bi 2 MoO 6 /rGO (2 wt % rGO), Bi 2 MoO 6 /rGO (5 wt % rGO), and Bi 2 MoO 6 /rGO (10 wt % rGO) nanocomposites, respectively. All the Bi 2 MoO 6 /rGO nanocomposites have smaller band gaps than pure Bi 2 MoO 6 , possibly because of interactions between the unpaired πelectrons of rGO and electrons on the surface of Bi 2 MoO 6 .…”

Section: Resultsmentioning

confidence: 95%

“…To further improve the photocatalytic performance of Bi 2 MoO 6 and address this limitation, Bi 2 MoO 6 is usually supported by organic or inorganic materials to suppress the electron–hole recombination. Among two-dimensional organic supports, reduced graphene oxide (rGO) has typically been employed owing to its unique properties such as excellent conductivity, a high surface-to-volume ratio, and high catalytic and mechanical properties. − Bi 2 MoO 6 /rGO composites have demonstrated improved photocatalytic activity for hydrogen production, CO 2 reduction, and dye degradation , owing to the presence of electron-rich interfaces and high electron extraction and transport at the synergistic interface between Bi 2 MoO 6 and rGO.…”

Section: Introductionmentioning

confidence: 99%

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Bismuth Molybdate Nanoplates Supported on Reduced Graphene Oxide: An Effective Nanocomposite for the Removal of Naphthalene via Adsorption–Photodegradation

et al. 2021

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Polycyclic aromatic hydrocarbons are a class of persistent organic water pollutants that raise serious concerns owing to their carcinogenicity and other negative impacts on humans and ecosystems. In this study, Bi 2 MoO 6 /reduced graphene oxide (rGO) nanocomposites were designed and prepared for the adsorption-assisted photodegradation of naphthalene molecules in an aqueous medium. The synthesized Bi 2 MoO 6 nanoplates and Bi 2 MoO 6 /rGO nanocomposites were characterized by X-ray diffraction, Fourier transform infrared, scanning electron microscopy, high-resolution transmission microscopy, X-ray photoelectron spectroscopy, ultraviolet spectroscopy, Brunauer−Emmett−Teller, and photoluminescence measurements. The photodegradation of naphthalene molecules was observed to assess the photocatalytic characteristics of the samples under visible light. The Bi 2 MoO 6 /rGO nanocomposites exhibited significantly improved photocatalytic efficiency compared to pure Bi 2 MoO 6 . Among the nanocomposites, those containing 2 wt % rGO showed the best photocatalytic activity. The incorporation of rGO enhanced the visible light absorption and decreased the recombination rate of photogenerated charge carriers. Moreover, a Bi 2 MoO 6 /rGO nanocomposite showed excellent reusability for five cycles.

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Section: Resultsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Bismuth Molybdate Nanoplates Supported on Reduced Graphene Oxide: An Effective Nanocomposite for the Removal of Naphthalene via Adsorption–Photodegradation

et al. 2021

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“…Approximately 650,000 tons of different dyes are used in the production of textiles every year [6,7]. Various dyes are widely used in silk, wool, cotton dyeing, and other textile industries [8,9]. Since these dyes do not have biodegradable and carcinogenic properties, they must be pretreated before emission [10].…”

Section: Introductionmentioning

confidence: 99%

Preparation of Dual Z-scheme Bi2MoO6/ZnSnO3/ZnO Heterostructure Photocatalyst for Efficient Visible Light Degradation of Organic Pollutants

Gao

et al. 2022

J Inorg Organomet Polym

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： An important means of achieving efficient charge separation and improving photocatalytic activity is the construction of heterostructures. In this study, the Bi 2 MoO 6 /ZnSnO 3 /ZnO heterostructure photocatalyst was synthesized by the hydrothermal method.The synthesized samples were carefully examined by X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), scanning electron microscope (SEM), high-resolution transmission electron microscopy (HR-TEM), photoluminescence (PL), and other analytical techniques.Meanwhile, the photocatalytic performance was further evaluated by multi-mode photocatalytic degradation with crystal violet (CV). The results show that the composite material has a relatively homogeneous cubic structure in size and shape. In the cubic structure, a heterogeneous structure exists between Bi 2 MoO 6 , ZnSnO 3 and ZnO. Simultaneously, the dramatic changes in physical morphology, such as the specific surface area and particle size of the composites, led to a unique set of properties, such as a significant climb in light absorption properties and superior photocatalytic activity. In addition, the Bi 2 MoO 6 /ZnSnO 3 /ZnO composite material shows lower photoluminescence intensity, smaller arc radius, and stronger photocurrent response compared to

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“…However, it can only be excited by ultraviolet and near-ultraviolet light (which makes up only 5% of sunlight) as its band gap usually above 3.0 eV. In order to exploit the energy of light source more efficiently, a variety of bismuth-based semiconductors have been developed, such as Bi 2 O 3 [14], Bi 2 MoO 6 [15][16][17][18], Bi 2 O 2 CO 3 [19,20], and BiOX (X = Cl, Br, I) [21][22][23]. As a fascinating Aurivillius phase material, Bi 2 MoO 6 has been the hotspot in photocatalytic applications due to its visible light absorption, nontoxicity, low cost, and high chemical durability [24].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Pt-Doped Bi2MoO6 Nanocomposites and Its High PDT Efficiency on HL60 Cells

Xiao

Lun

et al. 2021

Journal of Nanomaterials

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In this study, Pt-doped Bi2MoO6 nanocomposites were prepared by solvothermal and in situ reduction method. We used XRD, UV-Vis spectroscopy, TEM, EDS, and XPS to characterize its chemical properties. Results showed that the Pt-doped Bi2MoO6 nanocomposites had advantages of small size, good dispersion, and wide spectral response range. Then, we tested its biological toxicity and PDT efficiency on HL60 cells. Both pure Bi2MoO6 and Pt-doped Bi2MoO6 nanocomposites showed great biocompatibility after coincubated with leukemia cells for 12 h in the dark. As to PDT efficiency, Pt-doped Bi2MoO6 had a better-inactivated effect than pure Bi2MoO6. Furthermore, the PDT efficiency went up when atomic ratios and concentration increased. While the atomic ratio was 5% and the concentration was 1000 μg/mL, it reached the highest value at 85.2%. At last, we briefly analyzed the photocatalysis mechanism, which demonstrated that it was a potential photosensitizer with high efficiency for treating leukemia.

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Fabrication of novel Bi2MoO6/N-rGO catalyst for the efficient photocatalytic degradation of harmful dyes

Cited by 55 publications

References 62 publications

Bismuth Molybdate Nanoplates Supported on Reduced Graphene Oxide: An Effective Nanocomposite for the Removal of Naphthalene via Adsorption–Photodegradation

Bismuth Molybdate Nanoplates Supported on Reduced Graphene Oxide: An Effective Nanocomposite for the Removal of Naphthalene via Adsorption–Photodegradation

Preparation of Dual Z-scheme Bi2MoO6/ZnSnO3/ZnO Heterostructure Photocatalyst for Efficient Visible Light Degradation of Organic Pollutants

Preparation and Characterization of Pt-Doped Bi2MoO6 Nanocomposites and Its High PDT Efficiency on HL60 Cells

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