Controllable synthesis of CeO2/g-C3N4 hybrid catalysts and its structural, optical and visible light photocatalytic activity

Barathi, D.; Rajalakshmi, N.; Ranjith, R.; Sangeetha, R.; Meyvel, S.

doi:10.1016/j.diamond.2020.108161

Cited by 30 publications

(4 citation statements)

References 41 publications

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“…Because the semiconductor-based materials have a suitable band structure with the illuminated appropriate light source, the electrons, and holes are generated which can potentially produce hydroxyl radicals ( • OH) and superoxide radicals ( −• O 2 ) through various light-driven chemical reactions. Thus the widely-studied semiconductor photocatalysts are CeO 2 , ZnO, TiO 2 , CdS, Ta 3 N 5 , PbWO 3 , NiO, and BiFeO 3 are proved to be an effective photocatalyst [1][2][3][4][5][6][7][8][9]. Among the several semiconducting photocatalysis, TiO 2 has been considered a promising product in the photocatalytic process due to its high photocatalytic activity, chemical stability, non-toxicity, relatively inexpensive, and showing substantial UV light absorption.…”

Section: Introductionmentioning

confidence: 99%

Nickel and sulfur codoped TiO2 nanoparticles for efficient visible light photocatalytic activity

Kunnamareddy¹,

Rajendran

Megala

et al. 2021

J Inorg Organomet Polym

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In this work, Nickel (Ni) and sulfur (S) codoped TiO2 nanoparticles were prepared by a sol-gel technique. The as-prepared catalyst was characterized using X-ray diffraction (XRD), Fourier transforms infrared spectroscopy (FTIR), FT-Raman spectroscopy, scanning electron microscopy (SEM), energy dispersive spectrometer (EDS), transmission electron microscopy (TEM), UV-Vis diffuse reflectance spectra (DRS) for investigating crystal structure, crystal phase, particle size and bandgap energy of these samples. The photocatalytic performances of all the prepared catalysts have been investigated for the degradation of methylene blue (MB) under visible light irradiation. It was noticed that Ni-S codoped TiO2(Ni-S/TiO2) nanoparticles exhibited much higher photocatalytic activity compared with pure, Ni and S doped TiO2 due to higher visible light absorption and probable decrease in the recombination of photo-generated charges. It was decided that the great visible light absorption was created for codoped TiO2 by the formation of impurity energy states near both the edges of the collection, which works as trapping sites for both the photogenerated charges to decrease the recombination process.

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Section: Introductionmentioning

confidence: 99%

Nickel and sulfur codoped TiO2 nanoparticles for efficient visible light photocatalytic activity

Kunnamareddy¹,

Rajendran

Megala

et al. 2021

J Inorg Organomet Polym

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“…CeO 2 is a metal oxide with Lewis acid and base sites, which is a typical acid–base catalyst. 13 In the past two decades, many nanocomposites containing CeO 2 have been prepared, it can be divided into the following categories, metal/CeO 2 , metal oxide/CeO 2 , CeO 2 /support, such as Co/CeO 2 , 14 Ni/CeO 2 , 15 AuCu/CeO 2 , 16 MnO 2 /CeO 2 , 17 CuO/CeO 2 , 18 CeO 2 /SiO 2 , 19 CeO 2 /g-C 3 N 4 , 20 CeO 2 /Al 2 O 3 , 21 Ni–La 2 O 3 –CeO 2 /SBA-15, 22 Ni–CeO 2 /graphene, 23 and so on. Metal or metal oxide supported on CeO 2 carrier by impregnation method, or doped in the lattice of CeO 2 in the form of metal cation to form metal–Ce solid solution, which can improve the catalytic performance of the catalyst.…”

Section: Introductionmentioning

confidence: 99%

Catalytic wet peroxide degradation of acrylonitrile wastewater by ordered mesoporous Ag/CeO₂: synthesis, performance and kinetics

Guo

Liang

et al. 2021

RSC Adv.

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“…1 g/L of the composite containing g-C 3 N 4 with 9 wt % Bi 2 O 3 at 10 ppm reactive black 5 (RB 5) at pH = 5.7 demonstrated 84% degradation efficiency under UV-vis light for 120 min. The synergistic effects between g-C 3 N 4 and CeO 2 provides higher catalytic activities compared to the bare ones [457][458][459]. The catalytic effects of the g-C 3 N 4 /CeO 2 composite, bare g-C 3 N 4 , and CeO 2 on the thermal decomposition of ammonium perchlorate (AP) were analyzed by using TGA and DTA characterization [460].…”

Section: Photodegradation Of Organic Pollutantsmentioning

confidence: 99%

A Comprehensive Review of Graphitic Carbon Nitride (g-C3N4)–Metal Oxide-Based Nanocomposites: Potential for Photocatalysis and Sensing

2022

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g-C3N4 has drawn lots of attention due to its photocatalytic activity, low-cost and facile synthesis, and interesting layered structure. However, to improve some of the properties of g-C3N4, such as photochemical stability, electrical band structure, and to decrease charge recombination rate, and towards effective light-harvesting, g-C3N4–metal oxide-based heterojunctions have been introduced. In this review, we initially discussed the preparation, modification, and physical properties of the g-C3N4 and then, we discussed the combination of g-C3N4 with various metal oxides such as TiO2, ZnO, FeO, Fe2O3, Fe3O4, WO3, SnO, SnO2, etc. We summarized some of their characteristic properties of these heterojunctions, their optical features, photocatalytic performance, and electrical band edge positions. This review covers recent advances, including applications in water splitting, CO2 reduction, and photodegradation of organic pollutants, sensors, bacterial disinfection, and supercapacitors. We show that metal oxides can improve the efficiency of the bare g-C3N4 to make the composites suitable for a wide range of applications. Finally, this review provides some perspectives, limitations, and challenges in investigation of g-C3N4–metal-oxide-based heterojunctions.

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Controllable synthesis of CeO2/g-C3N4 hybrid catalysts and its structural, optical and visible light photocatalytic activity

Cited by 30 publications

References 41 publications

Nickel and sulfur codoped TiO2 nanoparticles for efficient visible light photocatalytic activity

Nickel and sulfur codoped TiO2 nanoparticles for efficient visible light photocatalytic activity

Catalytic wet peroxide degradation of acrylonitrile wastewater by ordered mesoporous Ag/CeO₂: synthesis, performance and kinetics

A Comprehensive Review of Graphitic Carbon Nitride (g-C3N4)–Metal Oxide-Based Nanocomposites: Potential for Photocatalysis and Sensing

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Controllable synthesis of CeO2/g-C3N4 hybrid catalysts and its structural, optical and visible light photocatalytic activity

Cited by 30 publications

References 41 publications

Nickel and sulfur codoped TiO2 nanoparticles for efficient visible light photocatalytic activity

Nickel and sulfur codoped TiO2 nanoparticles for efficient visible light photocatalytic activity

Catalytic wet peroxide degradation of acrylonitrile wastewater by ordered mesoporous Ag/CeO2: synthesis, performance and kinetics

A Comprehensive Review of Graphitic Carbon Nitride (g-C3N4)–Metal Oxide-Based Nanocomposites: Potential for Photocatalysis and Sensing

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Catalytic wet peroxide degradation of acrylonitrile wastewater by ordered mesoporous Ag/CeO₂: synthesis, performance and kinetics