Enhancement of photocatalytic performance in sonochemical synthesized ZnO–rGO nanocomposites owing to effective interfacial interaction

Yein, Win Thi; Wang, Qun; Feng, Xia; Li, Yang; Wu, Xiyong

doi:10.1007/s10311-017-0651-1

Cited by 22 publications

(6 citation statements)

References 48 publications

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“…Although a particular interest in solid-state synthesis methods is growing due to its great simplicity and ease. Ultrasonication [39], spin coating [40], sonochemical [41], template synthesis [42], self-assembly [43], pulsed laser [44] and ionothermal precipitation [45] are others important methods, but they are less used. In the last decade, more elaborate and robust synthesis methods were reported, but today increasingly simple methods are being sought in favor of green chemistry and scalability.…”

Section: Main Methods To Obtain Zno-graphenementioning

confidence: 99%

Synthesis, Characterization, and Photocatalytic Performance of ZnO–Graphene Nanocomposites: A Review

et al. 2020

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ZnO is an exciting material for photocatalysis applications due to its high activity, easy accessibility of raw materials, low production costs, and nontoxic. Several ZnO nano and microstructures can be obtained, such as nanoparticles, nanorods, micro flowers, microspheres, among others, depending on the preparation method and conditions. ZnO is a wide bandgap semiconductor presenting massive recombination of the generated charge carriers, limiting its photocatalytic efficiency and stability. It is common to mix it with metal, metal oxide, sulfides, polymers, and nanocarbon-based materials to improve its photocatalytic behavior. Therefore, ZnO–nanocarbon composites formation has been a viable alternative that leads to new, more active, and stable photocatalytic systems. Mainly, graphene is a well-known two-dimensional material, which could be an excellent candidate to hybridize with ZnO due to its excellent physical and chemical properties (e.g., high specific surface area, optical transmittance, and thermal conductivity, among others). This review analyses ZnO–graphene nanocomposites’ recent advances, addressing the synthesis methods and the resulting structural, morphological, optical, and electronic properties. Moreover, we examine the ZnO–graphene composites’ role in the photocatalytic degradation of organic/inorganic pollutants.

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Section: Main Methods To Obtain Zno-graphenementioning

confidence: 99%

Synthesis, Characterization, and Photocatalytic Performance of ZnO–Graphene Nanocomposites: A Review

et al. 2020

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“…It is well known that the strong metal–support interactions could assure the enhanced activity, improved thermal stability, increased amount of active sites and tuned selectivity in the traditional catalysis. − For example, a partial confinement of metal actives sites in the pores of supports can create strong interactions between them, thus tremendously improve the catalytic activity of metals and the metal-support interface. , Especially, it should be noted that the strong interfacial electronic interactions between semiconductors and cocatalysts play a vital role in boosting the interfacial electron transfer from the semiconductor to cocatalysts and improving the overall photocatalytic efficiency. − Thus, a deep understanding of the interactions between cocatalyst and semiconductor is of key significance for the rational design and fabrication of the next generation of highly efficient photocatalysts for production of solar fuels. In general, the cocatalyst/semiconductor electronic interactions could be efficiently enhanced by different strategies, such as varying the size of semiconductors, thermal treatment, , creating chemical bonds, ,,− tuning the exposed crystal facets, assuring π–π interactions and so on. , It is believed that the enhanced cocatalyst/semiconductor interactions, could (1) markedly promote the efficient separation and transfer of photogenerated electron-hole pairs, ,,, (2) change the flatband potential, Fermi level, band structures and charge carrier lifetimes, ,, (3) enhance absorption of visible light, ,,, (4) increase the stability of small metal clusters and even single atoms . Notably, in some cases, the cocatalyst/semiconductor interactions have negative effects on the photocatalytic activity .…”

Section: Fundamentals Of Heterogeneous Co2 Photoreductionmentioning

confidence: 99%

Cocatalysts for Selective Photoreduction of CO₂into Solar Fuels

et al. 2019

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Photoreduction of CO2 into sustainable and green solar fuels is generally believed to be an appealing solution to simultaneously overcome both environmental problems and energy crisis. The low selectivity of challenging multi-electron CO2 photoreduction reactions makes it one of the holy grails in heterogeneous photocatalysis. This Review highlights the important roles of cocatalysts in selective photocatalytic CO2 reduction into solar fuels using semiconductor catalysts. A special emphasis in this review is placed on the key role, design considerations and modification strategies of cocatalysts for CO2 photoreduction. Various cocatalysts, such as the biomimetic, metal-based, metal-free, and multifunctional ones, and their selectivity for CO2 photoreduction are summarized and discussed, along with the recent advances in this area. This Review provides useful information for the design of highly selective cocatalysts for photo(electro)reduction and electroreduction of CO2 and complements the existing reviews on various semiconductor photocatalysts.

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“…The spectrum obtained for ZnO monitors a weak absorption centered at ca. 641 cm − 1 and 502 cm − 1 (Yein et al 2018). These results indicating the successful preparation of ZnOS heterostructures.…”

Section: Resultsmentioning

confidence: 93%

Collaborative hydrothermal and calcination fabrication of ZnOS heterostructures for visible-light-driven H₂ production

Chen

Lin

Lai

et al. 2023

Phys. Chem. Chem. Phys.

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Enhancement of photocatalytic performance in sonochemical synthesized ZnO–rGO nanocomposites owing to effective interfacial interaction

Cited by 22 publications

References 48 publications

Synthesis, Characterization, and Photocatalytic Performance of ZnO–Graphene Nanocomposites: A Review

Synthesis, Characterization, and Photocatalytic Performance of ZnO–Graphene Nanocomposites: A Review

Cocatalysts for Selective Photoreduction of CO₂into Solar Fuels

Collaborative hydrothermal and calcination fabrication of ZnOS heterostructures for visible-light-driven H₂ production

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Enhancement of photocatalytic performance in sonochemical synthesized ZnO–rGO nanocomposites owing to effective interfacial interaction

Cited by 22 publications

References 48 publications

Synthesis, Characterization, and Photocatalytic Performance of ZnO–Graphene Nanocomposites: A Review

Synthesis, Characterization, and Photocatalytic Performance of ZnO–Graphene Nanocomposites: A Review

Cocatalysts for Selective Photoreduction of CO2into Solar Fuels

Collaborative hydrothermal and calcination fabrication of ZnOS heterostructures for visible-light-driven H2 production

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Product

Resources

About

Cocatalysts for Selective Photoreduction of CO₂into Solar Fuels

Collaborative hydrothermal and calcination fabrication of ZnOS heterostructures for visible-light-driven H₂ production