Fabrication of nanocomposite photocatalysts from zinc oxide nanostructures and reduced graphene oxide

Pawar, Rajendra C.; Cho, Danee; Lee, Caroline Sunyong

doi:10.1016/j.cap.2012.12.031

Cited by 46 publications

(7 citation statements)

References 43 publications

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“…In fact, in this process GO was reduced by TiCl 3 or SnCl 2 . The growth of nanocrystals of TiO 2 and SnO 2 with different morphologies on the rGO sheets was related to the various reduction abilities and hydrolysis rates of Ti 3+ and Sn 2+ , respectively [96].…”

Section: In Situ Crystallizationmentioning

confidence: 99%

An overview: recent development of semiconductor/graphene nanocomposites for photodegradation of phenol and phenolic compounds in aqueous solution

Kaveh

Alijani

2021

Journal of Asian Ceramic Societies

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The development of graphene-based nanocomposites is currently the issue of enormous research interest. Recent advancements have exhibited that semiconductor/graphene nanocomposites can be purposed as a promising new category of catalysts for the heterogeneous photocatalytic treatment of wastewaters. Since semiconductor/graphene nanocomposites have been found efficient in degradation of organic pollutants, photodegradation of phenol and phenolic compounds as hazardous contaminants in aqueous solution has been most widely investigated by these aforementioned nanocomposites. In the present review, after introduction on the properties and the different synthesis methods of semiconductor/graphene nanocomposites, we will discuss the application of these nanocomposites, in fields of photodegradation of phenol and phenolic compounds in aqueous solution.

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Section: In Situ Crystallizationmentioning

confidence: 99%

An overview: recent development of semiconductor/graphene nanocomposites for photodegradation of phenol and phenolic compounds in aqueous solution

Kaveh

Alijani

2021

Journal of Asian Ceramic Societies

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“…For example, it can photocatalyse the degradation of harmful compounds [18,19] such as aniline [20] under low UV light irradiation. In addition, ZnO may be doped by various compounds such as lanthanum and graphene [21,22] that effectively photocatalyse the degradation of methyl orange and methylene blue (MB) dyes. However, the usability of ZnO in photocatalytic degradation applications has several limitations, including a wide bandgap [23,24], high recombination rate of photogenerated electrons with holes, and low quantum efficiency [25,26].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Photocatalytic Performance of ZnO/Sepiolite Composite Materials

et al. 2021

Advances in Materials Science and Engineering

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Photocatalytic technology is a widely used water treatment method, whose efficiency can be increased by developing a suitable photocatalyst fabrication procedure. In this study, five different synthesis methods were utilised for the preparation of novel ZnO/sepiolite photolytic composites, namely, sol-gel method, hydrothermal reduction, hydrolytic precipitation, powder sintering, and impregnation-reduction. The obtained photocatalysts were characterised by scanning electron microscopy, infrared spectroscopy, and X-ray diffraction. The differences between the applied photocatalyst preparation methods and the reasons for these differences were discussed, and the photocatalytic activities of the prepared composite materials were compared. The obtained results revealed that the physical structure, chemical properties, and photocatalytic performance of the composite produced by the sol-gel method were superior to those of the materials fabricated by the other four methods. Moreover, this material also exhibited high photocatalytic stability, while its photocatalytic degradation of methylene blue dye proceeded via a quasi-first-order reaction. The prepared composites have broad application prospects in photocatalysis and can be potentially used for treating environmental pollutants.

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“…Creating strong electronic interaction between nanoscale graphene and ZnO in a composite can significantly modify the ZnO band structure, leading to an array of exciting new properties for the bulk material. For example, they have seen use as photocatalysts [4][5][6][7][8][9][10], sensors [11][12][13][14], capacitors [15][16][17][18][19][20], and as transparent conductive thin-films [21] to name just a few. Equally as diverse as their applications are the methods of synthesizing ZnO/graphene hybrid materials.…”

Section: Introductionmentioning

confidence: 99%

“…To achieve a more cohesive composite, a methodology involving the thermal decomposition of a zinc-containing precursor in a solid-state solution of graphene, or reduced graphene oxide is preferred. Synthesis of ZnO by thermal decomposition typically employs zinc (II) acetate dihydrate (Zn(CH 3 COO) 2 ·2H 2 O) as a precursor [8,[32][33][34], however, Hong et al in 2015 reported that synthesis of a ZnO/graphene composite from a mixture of graphene and Zn(CH 3 COO) 2 resulted in the formation of amorphous carbon as a byproduct [35]. Amorphous carbon is an impurity in the finished product that is difficult to remove, so it is desirable to begin with a zinc compound that will thermally decompose into only ZnO and other gaseous byproducts.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of a zinc oxide/graphene hybrid material by the direct thermal decomposition of oxalate

Little¹,

Pfund²,

McLain³

et al. 2020

Mater. Res. Express

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Hybrid materials of zinc (II) oxide (ZnO) nanocrystals and graphene are of current interest due to their cheap, Earth-abundant composition, low toxicity, and varied applications in photocatalysis, sensing, and electronics among others. We have developed a novel methodology for the synthesis of such materials utilizing the thermal decomposition of zinc (II) oxalate in solid-state solution with graphene nanoplatelets. Although the procedure simply involves precursor mixing and heating, electronic interaction between the ZnO and graphitic phases is spectroscopically observed in the hybrid materialbeyond that of a homogeneous mixture of ZnO and graphene-via powder XRD, XPS, and ATR-IR spectroscopy. The synthetic method employed can be easily tuned for the desired hybrid product stoichiometry, and is easily industrially scalable with minimal chemical waste products.

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Fabrication of nanocomposite photocatalysts from zinc oxide nanostructures and reduced graphene oxide

Cited by 46 publications

References 43 publications

An overview: recent development of semiconductor/graphene nanocomposites for photodegradation of phenol and phenolic compounds in aqueous solution

An overview: recent development of semiconductor/graphene nanocomposites for photodegradation of phenol and phenolic compounds in aqueous solution

Preparation and Photocatalytic Performance of ZnO/Sepiolite Composite Materials

Synthesis of a zinc oxide/graphene hybrid material by the direct thermal decomposition of oxalate

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