Hierarchical layered nanostructure of MoS2/boron doped reduced graphene oxide composites under visible light irradiation for effective antibiotic degradation and hexavalent chromium reduction

Vijayakumar, E.; raj, Muniyandi Govinda; Neppolian, Bernaurdshaw; Lakhera, Sandeep Kumar; Bosco, A. John

doi:10.1016/j.matlet.2021.129891

Cited by 17 publications

(7 citation statements)

References 15 publications

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“…50 The ZrO 2 @MoS 2 /g-C 3 N 4 nanocomposite dose and photocatalyst concentrations in Figure 11c,d The UV absorption at 357 nm decreases over time due to the decay of TC. 51 The effect of different TC concentrations (10,20,30, and 40 mg/L TC) on the photocatalytic degradation of TC was studied to establish the optimal state of the catalyst utilized. TC degradation increases from 55.9, 93.8, 69.6, and 79.3%, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…Molybdenum disulfide (MoS 2 ) is a high-productivity cocatalyst for photocatalytic degradation due to the survival of unsaturated Mo and S atoms at the exposed edges, which are capable of encoring photocatalytic degradation. It also enhances visible-light absorption and minimizes reflection, allowing more free charge-transfer carriers for photocatalytic degradation. , The layered structures of MoS 2 and g-C 3 N 4 help reduce lattice disparity and help form an electronic field at the interface of a 2D–2D nanocomposite, which aids in promoting charge separation and surface reactions. Thus, the nanocomposite charge separation and photoactivity degradation of the intended ZrO 2 @MoS 2 /g-C 3 N 4 nanocomposite should be significantly enhanced.…”

Section: Introductionmentioning

confidence: 99%

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Promoting Spatial Charge Transfer of ZrO₂ Nanoparticles: Embedded on Layered MoS₂/g-C₃N₄ Nanocomposites for Visible-Light-Induced Photocatalytic Removal of Tetracycline

et al. 2022

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Photocatalytic degradation is a sustainable technique for reducing the environmental hazards created by the overuse of antibiotics in the food and pharmaceutical industries. Herein, a layer of MoS2/g-C3N4 nanocomposite is introduced to zirconium oxide (ZrO2) nanoparticles to form a “particle-embedded-layered” structure. Thus, a narrow band gap (2.8 eV) starts developing, deliberated as a core photodegradation component. Under optimization, a high photocatalytic activity of 20 mg/L TC at pH 3 with ZrO2@MoS2/g-C3N4 nanocomposite was achieved with 94.8% photocatalytic degradation in 90 min. A photocatalytic degradation rate constant of 0.0230 min–1 is determined, which is 2.3 times greater than the rate constant for bare ZrO2 NPs. The superior photocatalytic activity of ZrO2@MoS2/g-C3N4 is due to the dual charge-transfer channel between the MoS2/g-C3N4 and ZrO2 nanoparticles, which promotes the formation of photogenerated e–/h+ pairs. Charge recombination produces many free electron–hole pairs, which aid photocatalyst reactions by producing superoxide and hydroxyl radicals via electron–hole pair generation. The possible mechanistic routes for TC were investigated in-depth, as pointed out by the liquid chromatography–mass spectrometry (LC–MS) investigation. Overall, this work shows that photocatalysis is a feasible sorbent approach for environmental antibiotic wastewater treatment.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Promoting Spatial Charge Transfer of ZrO₂ Nanoparticles: Embedded on Layered MoS₂/g-C₃N₄ Nanocomposites for Visible-Light-Induced Photocatalytic Removal of Tetracycline

et al. 2022

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“…Vijayakumar et al fabricated MoS 2 /B doped-rGO using a facile and low-cost hydrothermal approach. 100 The band gap energy of MoS 2 /B doped-rGO was found to be 1.70 eV, and the size ranged from 20 to 100 nm. The nanocomposites achieved up to an 80.1% reduction of Cr(VI) to Cr(III) in 120 min under irradiation of visible light.…”

Section: Photocatalytic Treatment Of Organic Pollutants Inorganic Pol...mentioning

confidence: 97%

“…These results demonstrate that Fe-doped g-C 3 N 4 /MoS 2 exhibits dramatically enhanced photocatalytic activity compared with the other materials evaluated under identical conditions. Vijayakumar et al fabricated MoS 2 /B doped-rGO using a facile and low-cost hydrothermal approach . The band gap energy of MoS 2 /B doped-rGO was found to be 1.70 eV, and the size ranged from 20 to 100 nm.…”

Section: Photocatalytic Treatment Of Organic Pollutants Inorganic Pol...mentioning

confidence: 99%

Molybdenum Disulfide-Based Nanomaterials for Visible-Light-Induced Photocatalysis

et al. 2022

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Visible-light-responsive photocatalytic materials have a multitude of important applications, ranging from energy conversion and storage to industrial waste treatment. Molybdenum disulfide (MoS 2 ) and its variants exhibit high photocatalytic activity under irradiation by visible light as well as good stability and recyclability, which are desirable for all photocatalytic applications. MoS 2 -based materials have been widely applied in various fields such as wastewater treatment, environmental remediation, and organic transformation reactions because of their excellent physicochemical properties. The present review focuses on the fundamental properties of MoS 2 , recent developments and remaining challenges, and key strategies for tackling issues related to the utilization of MoS 2 in photocatalysis. The application of MoS 2 -based materials in visible-light-induced catalytic reactions for the treatment of diverse kinds of pollutants including industrial, environmental, pharmaceutical, and agricultural waste are also critically discussed. The review concludes by highlighting the prospects of MoS 2 for use in various established and emerging areas of photocatalysis.

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“…Li et al utilized B 2 O 3 as a surface-modification material to enhance the performance of the NMC111 cathode [ 27 ]. The use of B 2 O 3 also resulted in graphene combined with a MoS 2 hierarchical structure, which improved the photo/electro properties of the graphene/MoS 2 composition for bio applications [ 29 ]. Riyanto et al reported that a boron-doped graphene quantum structure with MoS 2 could deliver a high capacity of ~1000 mAh∙g −1 [ 30 ].…”

Section: Introductionmentioning

confidence: 99%

Boron Oxide Enhancing Stability of MoS2 Anode Materials for Lithium-Ion Batteries

Nguyen

Kim

2022

Materials

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Molybdenum disulfide (MoS2) is the most well-known transition metal chalcogenide for lithium storage applications because of its simple preparation process, superior optical, physical, and electrical properties, and high stability. However, recent research has shown that bare MoS2 nanosheet (NS) can be reformed to the bulk structure, and sulfur atoms can be dissolved in electrolytes or form polymeric structures, thereby preventing lithium insertion/desertion and reducing cycling performance. To enhance the electrochemical performance of the MoS2 NSs, B2O3 nanoparticles were decorated on the surface of MoS2 NSs via a sintering technique. The structure of B2O3 decorated MoS2 changed slightly with the formation of a lattice spacing of ~7.37 Å. The characterization of materials confirmed the formation of B2O3 crystals at 30% weight percentage of H3BO3 starting materials. In particular, the MoS2_B3 sample showed a stable capacity of ~500 mAh·g−1 after the first cycle. The cycling test delivered a high reversible specific capacity of ~82% of the second cycle after 100 cycles. Furthermore, the rate performance also showed a remarkable recovery capacity of ~98%. These results suggest that the use of B2O3 decorations could be a viable method for improving the stability of anode materials in lithium storage applications.

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Hierarchical layered nanostructure of MoS2/boron doped reduced graphene oxide composites under visible light irradiation for effective antibiotic degradation and hexavalent chromium reduction

Cited by 17 publications

References 15 publications

Promoting Spatial Charge Transfer of ZrO₂ Nanoparticles: Embedded on Layered MoS₂/g-C₃N₄ Nanocomposites for Visible-Light-Induced Photocatalytic Removal of Tetracycline

Promoting Spatial Charge Transfer of ZrO₂ Nanoparticles: Embedded on Layered MoS₂/g-C₃N₄ Nanocomposites for Visible-Light-Induced Photocatalytic Removal of Tetracycline

Molybdenum Disulfide-Based Nanomaterials for Visible-Light-Induced Photocatalysis

Boron Oxide Enhancing Stability of MoS2 Anode Materials for Lithium-Ion Batteries

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Hierarchical layered nanostructure of MoS2/boron doped reduced graphene oxide composites under visible light irradiation for effective antibiotic degradation and hexavalent chromium reduction

Cited by 17 publications

References 15 publications

Promoting Spatial Charge Transfer of ZrO2 Nanoparticles: Embedded on Layered MoS2/g-C3N4 Nanocomposites for Visible-Light-Induced Photocatalytic Removal of Tetracycline

Promoting Spatial Charge Transfer of ZrO2 Nanoparticles: Embedded on Layered MoS2/g-C3N4 Nanocomposites for Visible-Light-Induced Photocatalytic Removal of Tetracycline

Molybdenum Disulfide-Based Nanomaterials for Visible-Light-Induced Photocatalysis

Boron Oxide Enhancing Stability of MoS2 Anode Materials for Lithium-Ion Batteries

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Promoting Spatial Charge Transfer of ZrO₂ Nanoparticles: Embedded on Layered MoS₂/g-C₃N₄ Nanocomposites for Visible-Light-Induced Photocatalytic Removal of Tetracycline

Promoting Spatial Charge Transfer of ZrO₂ Nanoparticles: Embedded on Layered MoS₂/g-C₃N₄ Nanocomposites for Visible-Light-Induced Photocatalytic Removal of Tetracycline