Preparation of g-C<sub>3</sub>N<sub>4</sub>/ZnO composites and their enhanced photocatalytic activity

Xing, Hongmei; Ma, Hongchao; Fu, Ying; Xue, Ming; Dong, Xiaoli; Zhang, X.

doi:10.1179/1753555714y.0000000216

Cited by 31 publications

(12 citation statements)

References 53 publications

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“…There have been many studies on synthesizing ZnObased materials to decompose toxic organic substances in wastewater [9,[34][35][36][37], in which ZnO/TiO 2 and ZnO/rGO-rGH showed the effective materials of degrading BPA under UV irradiation [38,39]. However, the use of UV light can affect the ecosystem as well as it is much more expensive than using visible light.…”

Section: Introductionmentioning

confidence: 99%

Facile Preparation of ZnO Nanoparticles and Ag/ZnO Nanocomposite and Their Photocatalytic Activities under Visible Light

Pham

Tran

et al. 2020

International Journal of Photoenergy

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Zinc oxide (ZnO) has been known as an excellent photocatalyst for the degradation of a variety of organic pollutants under UV irradiation. This work describes a synthesis of ZnO nanoparticles via a facile precipitation method, and Ag was doped into Ag/ZnO nanocomposite to improve the photocatalytic degradation of BPA under visible light irradiation. The obtained ZnO nanoparticles were 20 nm in size and had a relatively high surface area and pore volume, 26.2 m2/g and 0.48 cm3/g, respectively. The deposition of Ag led to a decrease in the surface area, pore volume, and band gap energy ( E g ) of ZnO nanoparticles. However, the photocatalytic activity of Ag/ZnO composite in the case increased. The performance of ZnO was compared with Ag/ZnO composites at the different molar ratios, and the kinetic reaction of BPA in these catalysts was investigated by the first-order kinetic model. The sample of Ag/ZnO-10 composite had the highest catalytic activity and showed the degradation efficiency, reaction rate, and degradation capacity of 100% in 120 min, 0.014 min-1, and 40 mg/g, respectively. In comparison, the effects of Ag/ZnO molar ratio, catalyst dosage, solution pH, and concentration of BPA on photocatalytic degradation were investigated. Additionally, the photocatalytic performance of Ag/ZnO-10 composite was evaluated by the degradation of other persistent organic compounds such as phenol, tartrazine, and methylene blue and compared to other catalysts in literature.

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Section: Introductionmentioning

confidence: 99%

Facile Preparation of ZnO Nanoparticles and Ag/ZnO Nanocomposite and Their Photocatalytic Activities under Visible Light

Pham

Tran

et al. 2020

International Journal of Photoenergy

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“…The occurrence of this quenching phenomenon provided effective evidence for the improvement of photocatalytic activity. 34…”

Section: Resultsmentioning

confidence: 99%

Photocatalytic Performance and Mechanistic Research of ZnO/g-C₃N₄ on Degradation of Methyl Orange

Guan

Zhang

et al. 2019

ACS Omega

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Highly dispersed ZnO/g-C3N4 composites with different doping ratios of g-C3N4 were prepared by a hydrothermal method. The preparation method is simple and the energy consumption is low. The composite samples were used to degradate the methyl orange solution. They all showed excellent photocatalytic activity and cycling stability. The optimal loading content of g-C3N4 was investigated, and the mechanism of enhanced photocatalytic activity was studied in detail. This study provides a promising photocatalytic material for the removal of organic pollutants.

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“…Introducing the ZnO to the g-C 3 N 4 is proved that this structure can enhance photocatalytic performance such as charge transfer and separation and decrease the photogenerated carriers' recombination (Figure 13a) [159][160][161][162][163]. In recent years, several types of research have been worked on the characterization of these heterojunctions.…”

Section: Zno-g-c 3 Nmentioning

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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Preparation of g-C₃N₄/ZnO composites and their enhanced photocatalytic activity

Cited by 31 publications

References 53 publications

Facile Preparation of ZnO Nanoparticles and Ag/ZnO Nanocomposite and Their Photocatalytic Activities under Visible Light

Facile Preparation of ZnO Nanoparticles and Ag/ZnO Nanocomposite and Their Photocatalytic Activities under Visible Light

Photocatalytic Performance and Mechanistic Research of ZnO/g-C₃N₄ on Degradation of Methyl Orange

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

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Preparation of g-C3N4/ZnO composites and their enhanced photocatalytic activity

Cited by 31 publications

References 53 publications

Facile Preparation of ZnO Nanoparticles and Ag/ZnO Nanocomposite and Their Photocatalytic Activities under Visible Light

Facile Preparation of ZnO Nanoparticles and Ag/ZnO Nanocomposite and Their Photocatalytic Activities under Visible Light

Photocatalytic Performance and Mechanistic Research of ZnO/g-C3N4 on Degradation of Methyl Orange

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

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Preparation of g-C₃N₄/ZnO composites and their enhanced photocatalytic activity

Photocatalytic Performance and Mechanistic Research of ZnO/g-C₃N₄ on Degradation of Methyl Orange