Cost-effective fabrication of ZnO/g-C3N4 composite film coated stainless steel meshes for visible light responsive photocatalysis

Ravichandran, K.; Kalpana, K.; Uma, R.; Sindhuja, E.; Seelan, K. Shantha

doi:10.1016/j.materresbull.2017.11.010

Cited by 46 publications

(5 citation statements)

References 37 publications

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“…Developing cost-effective and simple technologies for removing harmful pollutant is one of the most attentive matters to research recently [1][2][3]. Photocatalysis is considered a promising technique to treat contaminated water because the photocatalysis process is eco-friendly and economical and is capable of degrading several organic dyes or pollutants [1,[4][5][6][7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

In Situ g‐C₃N₄@Zno Nanocomposite: One‐Pot Hydrothermal Synthesis and Photocatalytic Performance under Visible Light Irradiation

Thi

Neto

Van

et al. 2021

Advances in Materials Science and Engineering

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In situ g-C3N4@ZnO nanocomposites (with 0, 1, 3, 5, and 7 wt.% of g-C3N4 in nanocomposite) were synthesized via a one-pot hydrothermal method using precursors of urea, zinc nitrate hexahydrate, and hexamethylenetetramine. The g-C3N4@ZnO nanocomposites were characterized by X-ray diffraction, scanning electron microscope, diffuse reflectance spectroscopy, and photoluminescence spectroscopy. The photocatalyst activity of g-C3N4@ZnO nanocomposites was evaluated via methylene blue degradation experiment under visible light irradiation. The g-C3N4@ZnO nanocomposites showed an enhancement in photocatalytic activity in comparison to pure ZnO which increased with the g-C3N4 content (1, 3, 5, and 7 wt.%) in nanocomposites. The photocatalytic activity reached the highest efficiency of 96.8% when the content of g-C3N4 was 7.0 wt.%. Nanocomposite having 7.0 wt.% of g-C3N4 also showed good recyclability with degradation efficiency higher than 90% even in the 4th use. The improvement of photocatalytic activity could be attributed to the adsorption ability and effective separation of electron-hole pairs between g-C3N4 and ZnO. This work implies a simple method to in situ prepare the nanocomposite material of g-C3N4 and semiconductors oxide for photocatalyst applications with high efficiency and good recyclability.

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Section: Introductionmentioning

confidence: 99%

In Situ g‐C₃N₄@Zno Nanocomposite: One‐Pot Hydrothermal Synthesis and Photocatalytic Performance under Visible Light Irradiation

Thi

Neto

Van

et al. 2021

Advances in Materials Science and Engineering

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“…The increase of solution temperature also promotes the degradation rate, but it would be tedious when large volumes of wastewater are considered for treatment under realistic conditions. There are also instances where the performance of GCN/ZnO is not significantly improved compared to pure ZnO, which is, however, dependent on various factors . The photocatalytic activity of GCN/ZnO was superior compared to GCN/TiO 2 and GCN/ZnFe 2 O 4 for the pollutant degradation, due to the high electron mobility associated with ZnO. , Collectively, the photogenerated charge carriers can lead to the generation of free radicals to have intense reactions with the pollutants leading to the complete degradation. , …”

Section: Photocatalytic Mechanisms Of Gcn/znomentioning

confidence: 99%

“…13 The CTAB suppresses the role of the hydroxyl ion etchant with aging time, which transformed the bowl shape to ring-like structures (Figure 2). 84 Ravichandran et al 85 fabricated GCN/ZnO through a spray pyrolysis technique wherein a solution containing GCN and ZAC was sprayed over the stainless-steel substrate and subsequently annealed at 350 °C. The direct calcination of ZAC leads to the formation of ZnO-NRs, 86 and therefore, a ZnO-NRs@GCN core@shell configuration can be easily achieved by heating the mixture of GCN and ZAC.…”

Section: Preparation Of the Compositementioning

confidence: 99%

Review and Perspective on Rational Design and Interface Engineering of g-C₃N₄/ZnO: From Type-II to Step-Scheme Heterojunctions for Photocatalytic Applications

Kumar¹,

Kavitha²,

Manjunatha³

2023

Energy Fuels

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Heterostructuring the g-C 3 N 4 (GCN) with wide gap oxide photocatalysts is of prominent interest as they can harvest photons spanning the UV−visible region. In this regard, GCN/ZnO have garnered remarkable attention due to their admirable structure, optical, dimensional anisotropy, and electronic properties. The 2D sheet-like structure of GCN can serve as a suitable substrate for the growth of distinct ZnO nanostructures under the multitude of reaction conditions. This review focuses on the progress in the rational design and interface engineering of GCN/ZnO to from Type-II and Z/S-scheme heterojunctions, followed by their relevant photocatalytic applications toward H 2 evolution, CO 2 reduction, pollutant degradation, and bacteria inactivation. The mechanism underlying the crystallization of GCN and ZnO together with their intimate contact in the composite are emphasized under the light of diverse preparation methods. The modification of GCN/ZnO with cocatalysts such as metals, alloy, semiconductors, and carbon materials to form ternary systems to highlight their advancements. The gap analysis and future prospectus of this intricate heterostructure concerning the challenges in synthetic approaches and the charge carrier dynamics are discussed. This review envisages the development of efficient GCN/ZnO-based heterostructures for multiscale applications.

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“…On the other hand, the majority of MoS 2 /TiO 2 heterostructures were powder materials that were either hard to reuse or used additives to produce the electrodes. To overcome these limitations, researchers worked hard to develop a film-based heterostructure composite with improved photocatalytic properties [6,12].…”

Section: Introductionmentioning

confidence: 99%

Enhanced interfacial charge transfer on strain-induced 2D-1D/MoS₂-TiO₂ heterostructures for electrochemical and photocatalytic applications

Bamola¹,

Rawat²,

Tanwar³

et al. 2022

Nanotechnology

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2D/1D-MoS2/TiO2 heterostructures have proven to be vigorous for photocatalytic applications. The enhancement in photocatalytic activity of heterostructures may get influenced by the accumulation of strain at the interface that affects the interfacial interaction. Keeping that in view, present paper reports the strain accumulated interfacial modification of 2D/1D-MoS2/TiO2 heterostructures for the enhancement of photocatalytic activity. Two different synthesis methods such as hydrothermal and chemical vapour deposition (CVD) method are used for the growth of MoS2 on TiO2 nanostructures. Micro-Raman spectroscopy revealed that strain is accumulated at the interface on growth of MoS2 over TiO2 nanostructures. It is further revealed that the MoS2/TiO2 heterostructure synthesized by CVD method induces compressive strain. Also, heterostructures synthesize by hydrothermal method induces tensile strain that modify the charge separation at the interface, which was further confirmed by X-ray photoelectron spectroscopy (XPS). Moreover, ultraviolet photoelectron spectroscopy (UPS) revealed that the upward band bending in the MoS2/TiO2 heterostructures synthesized by hydrothermal method. Similarly, heterostructure synthesized by chemical vapour method (CVD) shows the downward band bending that leads to the improved charge separation at interface. The modified interface of heterostructures is further studied for electrochemical measurement using cyclic voltammetry (CV) and photocatalytic activity by degradation of model compound.

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Cost-effective fabrication of ZnO/g-C3N4 composite film coated stainless steel meshes for visible light responsive photocatalysis

Cited by 46 publications

References 37 publications

In Situ g‐C₃N₄@Zno Nanocomposite: One‐Pot Hydrothermal Synthesis and Photocatalytic Performance under Visible Light Irradiation

In Situ g‐C₃N₄@Zno Nanocomposite: One‐Pot Hydrothermal Synthesis and Photocatalytic Performance under Visible Light Irradiation

Review and Perspective on Rational Design and Interface Engineering of g-C₃N₄/ZnO: From Type-II to Step-Scheme Heterojunctions for Photocatalytic Applications

Enhanced interfacial charge transfer on strain-induced 2D-1D/MoS₂-TiO₂ heterostructures for electrochemical and photocatalytic applications

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Cost-effective fabrication of ZnO/g-C3N4 composite film coated stainless steel meshes for visible light responsive photocatalysis

Cited by 46 publications

References 37 publications

In Situ g‐C3N4@Zno Nanocomposite: One‐Pot Hydrothermal Synthesis and Photocatalytic Performance under Visible Light Irradiation

In Situ g‐C3N4@Zno Nanocomposite: One‐Pot Hydrothermal Synthesis and Photocatalytic Performance under Visible Light Irradiation

Review and Perspective on Rational Design and Interface Engineering of g-C3N4/ZnO: From Type-II to Step-Scheme Heterojunctions for Photocatalytic Applications

Enhanced interfacial charge transfer on strain-induced 2D-1D/MoS2-TiO2 heterostructures for electrochemical and photocatalytic applications

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In Situ g‐C₃N₄@Zno Nanocomposite: One‐Pot Hydrothermal Synthesis and Photocatalytic Performance under Visible Light Irradiation

In Situ g‐C₃N₄@Zno Nanocomposite: One‐Pot Hydrothermal Synthesis and Photocatalytic Performance under Visible Light Irradiation

Review and Perspective on Rational Design and Interface Engineering of g-C₃N₄/ZnO: From Type-II to Step-Scheme Heterojunctions for Photocatalytic Applications

Enhanced interfacial charge transfer on strain-induced 2D-1D/MoS₂-TiO₂ heterostructures for electrochemical and photocatalytic applications