A Highly Efficient and Facile Approach for Fabricating Graphite Nanoplatelets

Thành, Đặng Văn; Thien, Nguyen Van; Thắng, Bùi Hùng; Chuc, Nguyen Van; Hong, Nguyen Manh; Trang, Bui Thi Thu; Лам, Тран Дай; Huyen, Dang Thi Thu; Hong, Phan Ngoc; Minh, Phan Ngoc

doi:10.1007/s11664-016-4399-3

Cited by 6 publications

(4 citation statements)

References 41 publications

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“…With their commercial availability, low cost, and structure similarity to graphene, graphite nanoplatelets (GNPs) continue to be a significant component of modern polymer nanocomposites [1][2][3][4][5][6]. These 2D nanofillers consist of stacked layers of graphene, with thickness ranging from a few to a hundred nanometers [1,2,[4][5][6][7][8][9][10][11]. GNPs have high aspect ratio and surface area, low mass density, and excellent thermal, electrical, and mechanical properties [2,3,5,6,[8][9][10][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…These 2D nanofillers consist of stacked layers of graphene, with thickness ranging from a few to a hundred nanometers [1,2,[4][5][6][7][8][9][10][11]. GNPs have high aspect ratio and surface area, low mass density, and excellent thermal, electrical, and mechanical properties [2,3,5,6,[8][9][10][12][13][14]. Recent application of GNPs in different polymers demonstrates improvement in thermomechanical characteristics [7,[15][16][17][18][19][20][21][22][23], electrical behavior [15,17,20,24], and corrosion resistance [25] of nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

“…GNPs have been prepared previously, using different methods [5,8], but the exfoliation of intercalated graphite (GIC), followed by mechanical agitation, remains to be the most common approach [1,2,4,5,7,[9][10][11][13][14][15]17,[23][24][25][26][27][28][29][30]. In this method, GIC (natural graphite intercalated with acids or alkali metals) undergoes exfoliation by thermal treatment or microwave irradiation, to produce exfoliated graphite (EG).…”

Section: Introductionmentioning

confidence: 99%

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Graphite Nanoplatelets from Waste Chicken Feathers

et al. 2020

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Graphite nanoplatelets (GNPs), a functional 2D nanofiller for polymer nanocomposites, utilize natural graphite as a raw material due to its stacked graphene layers and outstanding material properties upon successful exfoliation into nano-thick sheets. However, the increasing demand for natural graphite in many industrial applications necessitates the use of graphite from waste resources. We synthesized GNPs from waste chicken feathers (WCFs) by graphitizing carbonized chicken feathers and exfoliating the graphitic carbon by high-speed homogenization and sonication. We then separated GNP from non-exfoliated carbon by centrifugation. This paper describes the morphology, chemical, and crystalline properties of WCF and its carbon derivatives, as well as the structural features of WCF-derived carbons. We obtained GNPs that have a 2D structure with huge variations in particle size and thickness. The GNP shows the presence of carbonyl groups, which are mostly attached at the edges of the stacked graphene sheets. Defects in the GNP are higher than in graphene synthesized from direct exfoliation of natural graphite but lower than in graphene oxide and reduced graphene oxide. To produce GNP of high quality from WCF, restacking of graphene sheets and concentration of carbonyls must be minimized.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Graphite Nanoplatelets from Waste Chicken Feathers

et al. 2020

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“…Simplicity and suitability for large-scale production are among the few strong reasons for extensive use of this method. , The challenges associated with the chemical route were inadequate reduction, nonreproducibility, and formation of undesired defects. Till date, the chemical reduction of GO has been performed with several reducing agents such as NaBH 4 , hydrazine and its derivatives, , hydroquinone, hydriodic acid (HI), , sulfur-containing compounds, metal powders, and so forth. Among them, metal powders are the most powerful reducing agents achieving a high C/O atomic ratio of RGO.…”

Section: Introductionmentioning

confidence: 99%

Environmentally Benign Metal-Free Reduction of GO Using Molecular Hydrogen: A Mechanistic Insight

Rai¹,

Ahmed²,

Kumar³

et al. 2018

ACS Omega

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A simple yet effective methodology to obtain high-quality reduced graphene oxide (RGO) using a tetrahydrofuran suspension of GO under hydrogen at moderate pressure has been demonstrated. The extent of reduction as a function of the pressure of hydrogen gas, temperature, and time was studied, where the abstraction of oxygen is achievable with least mutilation of C-sp 2 bonds, hence upholding the integrity of the graphene sheet. Herein, the formation of a short-lived species is proposed, which is possibly responsible for such reduction. A detailed theoretical calculation along with in situ UV–visible experiments reveals the existence of a transient solvated electron species in the reaction medium. The hydrogen RGO (HRGO) achieved a C/O atomic ratio of 11.3. The conductivity measurements show that HRGO reached as high as 934 S/m, which indicates a high quality of RGO. The process is hassle-free, environmentally benign, and can be scaled up effortlessly without compromising the quality of the material.

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Soft conducting polymer hydrogels in situ doped by sulfonated graphene quantum dots for enhanced electrochemical activity

Yuan

Zha

et al. 2019

J Mater Sci: Mater Electron

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A Highly Efficient and Facile Approach for Fabricating Graphite Nanoplatelets

Cited by 6 publications

References 41 publications

Graphite Nanoplatelets from Waste Chicken Feathers

Graphite Nanoplatelets from Waste Chicken Feathers

Environmentally Benign Metal-Free Reduction of GO Using Molecular Hydrogen: A Mechanistic Insight

Soft conducting polymer hydrogels in situ doped by sulfonated graphene quantum dots for enhanced electrochemical activity

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