Visible-light driven photo-catalytic performance of novel composite of TiO2 and fluorinated hexagonal boron nitride nanosheets

Ahmad, Aqrab ul; Abbas, Akmal; Ali, Sajid; e-alam, M.Fakhar; Farooq, Zahid; Abbas, Qasim; Ahmad, Munir; Farid, Amjad; Afzal, Amir Muhammad; Arshad, Hafiz Muhammad Umair; Javid, Muhammad; Iqbal, Muzammil

doi:10.1016/j.ceramint.2020.12.156

Cited by 14 publications

(8 citation statements)

References 25 publications

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“…Several authors claim that the photocatalytic activity of TiO 2 enhances by incorporating h‐BN sheets to form a heterostructure‐cocatalyst. [ 33,34 ] However, much care is necessary to evaluate the performances of these heterojunctions. Bare 2D h‐BN does not show any photocatalytic activity, which is, therefore, depending on defects.…”

Section: Boron Nitride–metal Compound Heterostructuresmentioning

confidence: 99%

2D Boron Nitride Heterostructures: Recent Advances and Future Challenges

Ren

Innocenzi

2021

Small Structures

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Hexagonal boron nitride (h‐BN) is one of the most attractive 2D materials because of its remarkable properties. Combining h‐BN with other components (e.g., graphene, carbonitride, semiconductors) to form heterostructures opens new perspectives to developing advanced functional devices. In this review, the state‐of‐the‐art in h‐BN heterojunctions is highlighted. The preparation of high‐quality 2D h‐BN structures with fewer defects can maximize its intrinsic properties, such as thermal conductivity and electrical insulation, which are particularly important in 2D van der Waals electronics. On the other hand, the controlled introduction in 2D h‐BN of multiple defects creates new properties and advanced functions. In this last case, only through a better understanding of the nature and function of defects, it is possible to develop advanced applications based on h‐BN heterostructures. Engineering of the heterojunctions, such as the design of bonding at the interfaces, also plays a primary role. Several applications are proposed for h‐BN heterostructures, mostly in sensing and photocatalysis, and some new perspectives worth further studies are opened. Finally, the current challenges and the rising opportunities for the future developments of next‐generation h‐BN heterostructures are discussed.

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Section: Boron Nitride–metal Compound Heterostructuresmentioning

confidence: 99%

2D Boron Nitride Heterostructures: Recent Advances and Future Challenges

Ren

Innocenzi

2021

Small Structures

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Section: Mechanism Of Photodegradation Of Methyl Bluementioning

confidence: 97%

“…The electron-hole pairs produced by this process split efficiently under these conditions and can then contribute to photocatalytic degradation reactions. As a result, Ag/TiO2 shows maximum photocatalytic activity in the visible part of the spectrum [4]. The mechanism proposed for the removal of synthetic dyes using an Ag/TiO2 photocatalyst is illustrated in Figure 8 [23,24].…”

Section: Mechanism Of Photodegradation Of Methyl Bluementioning

confidence: 98%

“…It was observed that the pH of the solution had a significant impact on the photocatalytic degradation of pollutants. To check the role of pH in dye degradation, tests were conducted with different pH values (3)(4)(5)(6)(7)(8)(9)(10)(11) in 1.0 g/L of Ag/TiO 2 and a 3 mM H 2 O 2 oxidant dose. The dye concentrations were 5 ppm, 10 ppm, and 15 ppm.…”

Section: Effect Of Ph On Dye Degradationmentioning

confidence: 99%

“…In the realm of photocatalysis, developing novel visible light-active photocatalysts with high quantum efficacy has piqued the interest of researchers. Photocatalysis has enormous potential for environmental purification under UV and visible light sources [4]. The absorption of light by semiconducting materials, such as titanium dioxide (TiO 2 ), hematite (α-Fe 2 O 3 ), tungsten oxide (WO 3 ), tin oxide (SnO 2 ), copper oxide (CuO), and nickel oxide (NiO), has attracted the attention of the research community working on photocatalysis.…”

Section: Introductionmentioning

confidence: 99%

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Concurrent Synthesis and Immobilization of Ag Nanoparticles over TiO2 via Plasma Reduction for Photocatalytic Treatment of Methyl Blue in Water

et al. 2021

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Pure TiO2 nanoparticles (TiO2NPs) were produced via the sol–gel method and then coated with silver nanoparticles (AgNPs) to reduce their optical band gap. The concurrent synthesis and immobilization of AgNPs over TiO2NPs was achieved through the interaction of an open-air argon plasma jet with a solution of silver nitrate/stabilizer/TiO2NPs. The one-pot plasma synthesis and coating of AgNPs over TiO2NPs is a more straightforward and environmentally friendly method than others. The plasma-produced Ag/TiO2 nanocomposites were characterized and tested for their photocatalytic potential by degrading different concentrations of methyl blue (MB) in water. The dye concentration, oxidant dose, catalyst dose, and reaction time were also optimized for MB degradation. XRD results revealed the formation of pure AgNPs, pure TiO2NPs, and Ag/TiO2 nanocomposites with an average grain size of 12.36 nm, 18.09 nm, and 15.66 nm, respectively. The immobilization of AgNPs over TiO2NPs was also checked by producing SEM and TEM images. The band gap of AgNPs, TiO2NPs, and Ag/TiO2 nanoparticles was measured about 2.58 eV, 3.36 eV, and 2.86 eV, respectively. The ultraviolet (UV) results of the nanocomposites were supportive of the degradation of synthetic dyes in the visible light spectrum. The AgNPs in the composite not only lowered the band gap but also obstructed the electron–hole recombinations. The Ag/TiO2 composite catalyst showed 90.9% degradation efficiency with a 5 ppm dye concentration after 120 min of light exposure.

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Heterostructures of hexagonal boron nitride with other two-dimensional materials: synthesis, properties, and applications

Balta,

Simsek

2024

Hexagonal Boron Nitride

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Visible-light driven photo-catalytic performance of novel composite of TiO2 and fluorinated hexagonal boron nitride nanosheets

Cited by 14 publications

References 25 publications

2D Boron Nitride Heterostructures: Recent Advances and Future Challenges

2D Boron Nitride Heterostructures: Recent Advances and Future Challenges

Concurrent Synthesis and Immobilization of Ag Nanoparticles over TiO2 via Plasma Reduction for Photocatalytic Treatment of Methyl Blue in Water

Heterostructures of hexagonal boron nitride with other two-dimensional materials: synthesis, properties, and applications

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