Synthesis and characterization of ZnO NWAs/graphene composites for enhanced optical and field emission performances

Liu, Jin; Zhang, Zhiyong; Liu, Yuanyuan; Yan, Junfeng; Yun, Jiangni; Zhao, Wenguang; Kou, Lu; Zhai, Chunxue

doi:10.1016/j.compositesb.2016.05.036

Cited by 28 publications

(12 citation statements)

References 40 publications

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“…[76][77][78][79] However, care must be taken when comparing literature reports on this kind of composites since signicant differences may arise depending not only on the type of ZnO structures used, but also on the graphene synthesis method and its oxidation state. 28,[76][77][78][79][80][81][82][83] In order to highlight the differences that are frequently encountered in distinct ZnO structures, as well as when they are incorporated into carbon-based composites, Fig. 7d depicts a comparison between the PL spectra of the sample produced by direct-laser writing using the ZnO-based paste and LAFD-produced ZnO structures, as well as other ZnO/carbon composites prepared with the LAFD-ZnO structures.…”

Section: Photoluminescencementioning

confidence: 99%

ZnO decorated laser-induced graphene produced by direct laser scribing

et al. 2019

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Section: Photoluminescencementioning

confidence: 99%

ZnO decorated laser-induced graphene produced by direct laser scribing

et al. 2019

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“…This material, therefore, shows, for the same thickness, a strength 100 times greater than steel. These characteristics make graphene an ideal candidate for reinforcement in composite materials [7][8][9][10], as filler for metallic [11]; ceramic [12,13]; and, above all, polymeric matrices [14].…”

Section: Introductionmentioning

confidence: 99%

Effects of Graphene-Based Fillers on Cathodic Delamination and Abrasion Resistance of Cataphoretic Organic Coatings

et al. 2020

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This study aims to demonstrate the excellent protective performance of functionalized graphene oxide (fGO) flakes in acrylic cataphoretic coatings. The filler content provides an important contribution in improving the chemical and mechanical resistance of the acrylic matrix. The morphology of the fillers was first investigated by optical and electron microscopy, analysing the distribution of the fGO flakes within the polymer matrix. After that, the flakes were added to the cataphoretic bath in different concentrations, resulting in four series of samples. The cathodic delamination of the coatings was assessed with cathodic polarization cycles and with measurements carried out with a scanning Kelvin probe. Finally, the abrasion resistance at the macroscopic and microscopic level was studied by scrub testing and scratching atomic force microscopy analysis, respectively. The incorporation of fGO at the optimized concentration of 0.2 wt.% greatly increases the cathodic delamination resistance of the acrylic matrix, resulting in an effective barrier against the effects of absorbed aggressive substances. Graphene-based fillers also enhance abrasion resistance, thanks to their high mechanical strength. Thus, this work demonstrates the great protective benefits that can be obtained when using fGO flakes as reinforcing fillers in cataphoretic coatings.

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“…One of the applications in which graphene has found most success is the reinforcement of composite coatings [ 19 , 20 , 21 , 22 ], be they of metallic [ 23 ], ceramic [ 24 , 25 ] or polymer [ 26 ] matrix. With regard to resins, for example, graphene has shown to effectively improve the mechanical and electrical characteristics of polymeric matrices, creating multifunctional coatings [ 27 , 28 , 29 ].…”

Section: Introductionmentioning

confidence: 99%

Graphene-Based Reinforcing Filler for Double-Layer Acrylic Coatings

et al. 2020

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This study aims to demonstrate the remarkable features of graphene-based fillers, which are able to improve the protective performance of acrylic coatings. Furthermore, the joint application of a cataphoretic primer and a spray top coat, containing graphene and functionalized graphene oxide flakes, respectively, enables the deposition of a double-layer coating with high conductivity and abrasion resistance properties, capable of offering excellent corrosion resistance to the metal substrate. The surface morphology of the single- and double-layer coatings was investigated by optical and electron microscopies, analysing the defectiveness introduced in the polymer matrix due to the filler agglomeration. The behavior in aggressive environments was assessed by exposure of the samples in the salt spray chamber, evaluating the blister formation and the adhesion level of the coatings. Electrochemical impedance spectroscopy measurements were employed to study the corrosion protection properties of the coatings, whose conductivity and abrasion resistance features were analysed by conductivity assessment and scrub tests, respectively. The incorporation of graphene-based fillers in the cataphoretic primer improves the corrosion protection properties of the system, while the graphene flakes provide the top coat spray layer with high conductivity and excellent abrasion resistance features. Thus, this work demonstrates the possibility of employing different types of graphene-based fillers and deposition methods for the creation of multifunctional coatings.

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Synthesis and characterization of ZnO NWAs/graphene composites for enhanced optical and field emission performances

Cited by 28 publications

References 40 publications

ZnO decorated laser-induced graphene produced by direct laser scribing

ZnO decorated laser-induced graphene produced by direct laser scribing

Effects of Graphene-Based Fillers on Cathodic Delamination and Abrasion Resistance of Cataphoretic Organic Coatings

Graphene-Based Reinforcing Filler for Double-Layer Acrylic Coatings

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