A self-standing macroporous Au/ZnO/reduced graphene oxide foam for recyclable photocatalysis and photocurrent generation

She, Ping; Yin, Shengyan; He, Qinrong; Zhang, Xiaochen; Xu, Kongliang; Shang, Yinxing; Men, Xiaoju; Zeng, Shaohua; Sun, Hang; Liu, Zhenning

doi:10.1016/j.electacta.2017.06.027

Cited by 49 publications

(16 citation statements)

References 46 publications

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“…The spectrum of GO includes D band at 1343 cm −1 which is consistent with reported results [27,28]. The D band appears due to irregularities in the atomic arrangements or effects of graphene edges and microwaves [29].…”

Section: Chemical Compositionsupporting

confidence: 90%

An Electrochemical Synthesis of Reduced Graphene Oxide/Zinc Nanocomposite Coating through Pulse-Potential Electrodeposition Technique and the Consequent Corrosion Resistance

Asl

Afshar

Yaghoubinezhad

2018

International Journal of Corrosion

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Pulse-potential coelectrodeposition of reduced graphene oxide/zinc (rGO-Zn) nanocomposite coating is directly controlled upon a steel substrate from a one-pot aqueous mixture containing [GO−/Zn2+]δ+ nanoclusters. GO nanosheets are synthesized by modified Hummer’s approach while Zn cations are produced in the solution and deposited on GO nanosheets using anodic dissolution technique. Eventually, nanoclusters are reduced to rGO-Zn film through an electrochemical process. Chemical composition, surface morphology, and corrosion resistance of the thin film are characterized. Results show that the corrosion resistance of rGO-Zn coating is approximately 10 times more than the bare steel.

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Section: Chemical Compositionsupporting

confidence: 90%

An Electrochemical Synthesis of Reduced Graphene Oxide/Zinc Nanocomposite Coating through Pulse-Potential Electrodeposition Technique and the Consequent Corrosion Resistance

Asl

Afshar

Yaghoubinezhad

2018

International Journal of Corrosion

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“…In a broader way, photocatalytic nanomaterials can be categorized in terms of dimensionality as zero-dimensional (nanoparticles [68] and quantum dots [69]), one-dimensional (nanorods [70,71], nanoribbons [72], and nanotubes [4,72]), two-dimensional (graphene bases nanocomposites) [66,73,74], or three-dimensional (3D graphene) [21,75,76]. The choice of morphology depends upon the targeted application, as well as the desired properties.…”

Section: Application Of Heterogeneous Photocatalysis For Water and Wamentioning

confidence: 99%

“…This property, along with its photocatalytic ability, has been reported to be promising for water and wastewater treatment technology by many researchers [15][16][17][18]. Similary, ZnO, a wide band-gap semiconductor, and g-C 3 N 4 , a metal-free photocatalyst have recently emerged as promising materials for photocatalytic applications [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Heterogeneous photocatalysis and its potential applications in water and wastewater treatment: a review

2018

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There has been a considerable amount of research in the development of sustainable water treatment techniques capable of improving the quality of water. Unavailability of drinkable water is a crucial issue especially in regions where conventional drinking water treatment systems fail to eradicate aquatic pathogens, toxic metal ions and industrial waste. The research and development in this area have given rise to a new class of processes called advanced oxidation processes, particularly in the form of heterogeneous photocatalysis, which converts photon energy into chemical energy. Advances in nanotechnology have improved the ability to develop and specifically tailor the properties of photocatalytic materials used in this area. This paper discusses many of those photocatalytic nanomaterials, both metal-based and metal-free, which have been studied for water and waste water purification and treatment in recent years. It also discusses the design and performance of the recently studied photocatalytic reactors, along with the recent advancements in the visible-light photocatalysis. Additionally, the effects of the fundamental parameters such as temperature, pH, catalyst-loading and reaction time have also been reviewed. Moreover, different techniques that can increase the photocatalytic efficiency as well as recyclability have been systematically presented, followed by a discussion on the photocatalytic treatment of actual wastewater samples and the future challenges associated with it.

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“…From 2016 to 2020, only 22.71% of the reported syntheses used surfactants to obtain it (see Figure 14). Of that 22.71% the main surfactants were: hexamethylenetetramine (HMTA) (32.73%) [96], polyvinylpyrrolidone (PVP) (14.55%) [96], 3-aminopropyl-trimethoxysilane (APTMS) (10.91%) [97], cetyl trimethyl ammonium bromide (CTAB) (9.09%) [98], ethylenediamine (EDA)(5.45%) [99], sodium dodecyl sulfate (SDS) (5.45%) [100], and dimethyl sulfoxide (DMSO) (3.64%) In general, the use of surfactants has declined considerably due to the global trend in environmental protection. According to green chemistry principles, less dangerous chemical syntheses should be designed.…”

Section: Surfactantsmentioning

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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A self-standing macroporous Au/ZnO/reduced graphene oxide foam for recyclable photocatalysis and photocurrent generation

Cited by 49 publications

References 46 publications

An Electrochemical Synthesis of Reduced Graphene Oxide/Zinc Nanocomposite Coating through Pulse-Potential Electrodeposition Technique and the Consequent Corrosion Resistance

An Electrochemical Synthesis of Reduced Graphene Oxide/Zinc Nanocomposite Coating through Pulse-Potential Electrodeposition Technique and the Consequent Corrosion Resistance

Heterogeneous photocatalysis and its potential applications in water and wastewater treatment: a review

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

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