Enhanced photocatalytic activity and easy recovery of visible light active MoSe2/BiVO4 heterojunction immobilized on Luffa cylindrica – experimental and DFT study

Chawla, Harshita; Saha, Meghna; Upadhyay, Sumit Kumar; Rohilla, Jyoti; Ingole, Pravin P.; Sápi, András; Szenti, Imre; Yadav, Mohit; Лебедев, В. Т.; Chandra, Amrish; Garg, Seema

doi:10.1039/d1en00578b

Cited by 7 publications

(5 citation statements)

References 53 publications

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“…[256] As the most promising photocatalyst candidates, TMDs have recently been used in Z-scheme photocatalytic HER by virtue of their good structural stability and high resistance against photocorrosion. [257][258][259][260][261][262] In particular, although pristine MoSe 2 presents desirable semiconducting properties with a narrow bandgap of ≈1.33-1.72 eV and the largest carrier mobility ratio among group VIB TMDs, which significantly promotes the separation of electron-hole pairs), [263] rendering it a suitable photocatalyst. However, its inefficient light absorption, sluggish charge transfer process, and rapid recombination of electronhole pairs hindered its use in industrial applications, while it can be served as cocatalysts to collaborate with other conventional photosensitizers, including TiO 2 , [264][265][266] CdS, [33,[267][268][269] g-C 3 N 4 , [270,271] metal oxides, [272,273] and other TMDs [274][275][276] via interfacial engineering or structural engineering (Figure 22 and Table 9).…”

Section: Photocatalytic Hydrogen Evolution Reactionmentioning

confidence: 99%

Molecular Engineering Strategies toward Molybdenum Diselenide Design for Energy Storage and Conversion

Wang

Sun

2022

Advanced Energy Materials

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The development of graphene has readily accelerated the research progress on 2D materials. As a representative 2D family, transition metal dichalcogenides are widely used in the realms of energy storage and conversion. In particular, molybdenum diselenide (MoSe2) has captured widespread interests owing to its unique physical and chemical properties and remarkable potential in energy applications. Nevertheless, typically, the electrochemical property of pristine MoSe2 does not meet the expectations, which necessitates the exploration and applications of proper modification strategies to achieve its full potential. Herein, several state‐of‐the‐art molecular engineering strategies are summarized, and their energy‐oriented applications are described. Furthermore, insightful information on the significance of molecular engineering methods in improving the electrochemical properties of MoSe2 and perspectives on the future developments of MoSe2 are presented. It is anticipated that the research community can use the information in this review to improve the electrochemical properties of MoSe2 targeting practical application scenarios.

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Section: Photocatalytic Hydrogen Evolution Reactionmentioning

confidence: 99%

Molecular Engineering Strategies toward Molybdenum Diselenide Design for Energy Storage and Conversion

Wang

Sun

2022

Advanced Energy Materials

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“…Some researchers have already considered luffa cylindrica, alginate sphere, or light expanded clay aggregate (LECA), but their potentialities are still the object of study today. Following this perspective, Chawla et al immobilized MoSe 2 /BiVO 4 on luffa cylindrica, and then they tested it in phenol degradation, observing up to 97% removal within 2 h of visible light irradiation [206]. Huang et al recently investigated the possibility of combining alginate spheres with magnetic components, finding exciting results.…”

Section: Other Emerging Eco-friendly Materials (Floating Devices Memb...mentioning

confidence: 99%

Olive Mill Wastewater Remediation: From Conventional Approaches to Photocatalytic Processes by Easily Recoverable Materials

et al. 2022

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Olive oil production in Mediterranean countries represents a crucial market, especially for Spain, Italy, and Greece. However, although this sector plays a significant role in the European economy, it also leads to dramatic environmental consequences. Waste generated from olive oil production processes can be divided into solid waste and olive mill wastewaters (OMWW). These latter are characterized by high levels of organic compounds (i.e., polyphenols) that have been efficiently removed because of their hazardous environmental effects. Over the years, in this regard, several strategies have been primarily investigated, but all of them are characterized by advantages and weaknesses, which need to be overcome. Moreover, in recent years, each country has developed national legislation to regulate this type of waste, in line with the EU legislation. In this scenario, the present review provides an insight into the different methods used for treating olive mill wastewaters paying particular attention to the recent advances related to the development of more efficient photocatalytic approaches. In this regard, the most advanced photocatalysts should also be easily recoverable and considered valid alternatives to the currently used conventional systems. In this context, the optimization of innovative systems is today’s object of hard work by the research community due to the profound potential they can offer in real applications. This review provides an overview of OMWW treatment methods, highlighting advantages and disadvantages and discussing the still unresolved critical issues.

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“…In order to conquer these obstacles, the construction of Bi 2 MoO 6 heterojunctions in combination with other suitable semiconductors has been an effective means in recent years. For example, TiO 2 /Bi 2 MoO 6 [ 10 , 11 ], g-C 3 N 4 /Bi 2 MoO 6 [ 12 , 13 ], and MoSe 2 /BiVO 4 [ 14 ] have all played significant roles in solving environmental pollution. However, there have been fewer reports on the construction of heterojunctions for two structurally similar Bi-based semiconductors by using methods suitable for industrial production.…”

Section: Introductionmentioning

confidence: 99%

In Situ Synthesis of Bi2MoO6/Bi2SiO5 Heterojunction for Efficient Degrading of Persistent Pollutants

et al. 2023

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Photocatalytic degradation is an environmentally friendly way to eliminate environmental pollution. Exploring a photocatalyst with high efficiency is essential. In the present study, we fabricated a Bi2MoO6/Bi2SiO5 heterojunction (BMOS) with intimate interfaces via a facile in situ synthesis method. The BMOS had much better photocatalytic performance than pure Bi2MoO6 and Bi2SiO5. The sample of BMOS-3 (3:1 molar ratio of Mo:Si) had the highest removal efficiency by the degradation of Rhodamine B (RhB) up to 75% and tetracycline (TC) up to 62% within 180 min. The increase in photocatalytic activity can be attributed to constructing high-energy electron orbitals in Bi2MoO6 to form a type II heterojunction, which increases the separation efficiencies of photogenerated carriers and transfer between the interface of Bi2MoO6 and Bi2SiO5. Moreover, electron spin resonance analysis and trapping experiments showed that the main active species were h+ and •O2− during photodegradation. BMOS-3 maintained a stable degradation capacity of 65% (RhB) and 49% (TC) after three stability experiments. This work offers a rational strategy to build Bi-based type II heterojunctions for the efficient photodegradation of persistent pollutants.

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Enhanced photocatalytic activity and easy recovery of visible light active MoSe₂/BiVO₄ heterojunction immobilized on Luffa cylindrica – experimental and DFT study

Abstract: The nanostructured Bismuth Vanadate (BiVO4) and Molybdenum diselenide (MoSe2) heterostructures were prepared under varying concentration of MoSe2 from 0.05 to 0.2 mol%. The synthesized photocatalysts were used to degrade Methylene...

Cited by 7 publications

References 53 publications

Molecular Engineering Strategies toward Molybdenum Diselenide Design for Energy Storage and Conversion

Molecular Engineering Strategies toward Molybdenum Diselenide Design for Energy Storage and Conversion

Olive Mill Wastewater Remediation: From Conventional Approaches to Photocatalytic Processes by Easily Recoverable Materials

In Situ Synthesis of Bi2MoO6/Bi2SiO5 Heterojunction for Efficient Degrading of Persistent Pollutants

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