Sintesis dan karakterisasi grafena oksida dari tempurung kelapa dengan metode sonikasi dan hidrotermal

Honorisal, Mohamad Bima Putera; Huda, Nurul; Partuti, Tri; Sholehah, Amalia

doi:10.36055/tjst.v16i1.7519

Cited by 5 publications

(5 citation statements)

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“…Compared to the sonicated graphite, the surface morphology appears more clear. The findings demonstrated that the hydrothermal procedure produced graphene oxide and a transparent, thin layer as a result of a prolonged sonication process and particle sizes of 200# and 230# [11]. This research is very beneficial for the community because it can become an economic value for the community itself and it can also make it easier to produce GO with a faster method and at a lower price.…”

Section: Introductionmentioning

confidence: 81%

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Crystal Structure Analysis of Graphene Oxide based on Bamboo “Betung” Synthesized By Modi-Fied Hummer Method

Safitri,

Ramli,

Gusnedi

et al. 2023

jccs

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Bamboo is a non-timber forest product with a very large population in Indonesia. One of them is bamboo betung which can be found from the lowlands to the highlands but has not been used properly. Therefore, research was conducted to utilize bamboo betung to benefit the society. In this study, the synthesis of graphene oxide (GO) from bamboo betung stems will be carried out. The purpose of GO synthesis to further observe the crystal structure and crystal size of GO itself because it can be applied in various fields such as wave absorbers, radio frequency electronics, data display panels, and photovoltaic cells. GO synthesis was carried out using the Modified Hummers Method. The sintering temperatures used in this study were 300oC, 350oC, 400oC and 4500C. GO characterization was carried out using XRD and FTIR to reveal the system of crystal, crystal structure, and size, in addition functional groups, and phases of graphene oxide. GO has an average crystal size of 23.30165 nm as the largest average crystal size. GO layer is formed due to the bond between Carbon (C), Hydrogen (H) and Oxygen (O). GO Layer can be typed at any temperature variations carried out..

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Section: Introductionmentioning

confidence: 81%

“…Based on Figure 3 it shown that the solution turns yellow which indicates the presence of graphene oxide. Then the mixture is sonicated using ultrasonic for 2 hours to peel off graphite oxide into graphene oxide [11]. Then the sample is allowed to stand for 1 day to form a solid phase precipitate and liquid.…”

Section: Methodsmentioning

confidence: 99%

Crystal Structure Analysis of Graphene Oxide based on Bamboo “Betung” Synthesized By Modi-Fied Hummer Method

Safitri,

Ramli,

Gusnedi

et al. 2023

jccs

View full text Add to dashboard Cite

show abstract

“…After the solution changed to yellow which indicated the presence of graphene oxide, the mixture was sonicated for 2 hours to exfoliate the graphite into graphene [18]. Then, the solution was precipitated for 1 day until liquid and solid phases were formed [19].…”

Section: Methodsmentioning

confidence: 99%

Structure Analysis Of Graphene Micro Oxide From Old Coconut Shell Waste

Nanda

Ramli

2022

Pillar of Phys.

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Synthesis of graphene oxide from old coconut shell waste material. It has many applications, one of which is used as a microwave absorber. Old coconut shells are used as waste because the ingredients are easy to get. This study aims to analyze the microstructure of graphene oxide from old coconut shell waste. In the carbonization process using a furnace with temperature variations from 250˚C to 450˚C, the furnace time is 120 minutes. Making activated charcoal from old coconut shells using the modified hummers method with oxidizing agents KmnO2, H2SO4, and NaNO3. Characterization of graphene oxide from old coconut shell waste using FTIR, XRD and SEM. The test results using FTIR on GO samples show the formation of GO material where the sample contains functional groups containing bonds between carbon (C), Hydrogen (H) and Oxygen (O), the highest crystal size on XRD is 43.20800529 nm, and particle size the best SEM was obtained at GO 250˚C with a particle size of 65.701671 nm where the larger the particle size, the larger the surface pores of the sample, so that the better microwave absorbent was produced.

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“…To produce graphene can be done by several methods such as chemical vapor decomposition (CVD) [5] Microchemical exfoliation (ME) [6] and the Hummer method use chemical compounds [7]. Method most commonly used today considered still not yet effective in graphene synthesis because the time required is quite long, the high cost and can produce toxic gases [8].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of reduced graphene oxide based on rubber seed shells and rice husks and their composites using the modified Hummer method

Anwar,

Khumaisah,

Nurbaeti

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Reduced graphene oxide (RGO) is a thin material, has a hexagonal two- dimentional lattice and is considered as an interesting material for many applications. This study aims to synthesize reduced graphene oxide (RGO) from rubber seed shells (RSS) and rice husks (RH) and their composites using the modified hummer method. The modification was done by replaceNaNO3 with H3PO4 so can eliminated of NO2 and N2O4 as toxic gas. RSS contains 48.64% cellulose and 21.60% lignin. Meanwhile, 38% cellulose, 18% hemicellulose and 22% lignin were contained in RH. Synthesis was carried out with three steps, that are synthesis graphite with calcination at 550°C, then graphite oxide synthesis using H2SO4 and H3PO4 (9:1) and KMnO4 as oxidator, finally synthesis of reduced graphene oxide (RGO) using ultrasonicated and Zn as reductor. Analysis of RGO sample was carried out through measured from XRD and FTIR. Based on results XRD analysis was obtained 2θ of RGO RSS, RH, and RRC respectively 23.5, 21.2, and 24.3° with crystallinity by 17%, 13%, and 10%. those results showing amorphous material properties. FTIR characterization shows change structure on RGO after reduction with loss of O atoms as well loss OH groups present in RGO.

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Sintesis dan karakterisasi grafena oksida dari tempurung kelapa dengan metode sonikasi dan hidrotermal

Cited by 5 publications

References 0 publications

Crystal Structure Analysis of Graphene Oxide based on Bamboo “Betung” Synthesized By Modi-Fied Hummer Method

Crystal Structure Analysis of Graphene Oxide based on Bamboo “Betung” Synthesized By Modi-Fied Hummer Method

Structure Analysis Of Graphene Micro Oxide From Old Coconut Shell Waste

Synthesis of reduced graphene oxide based on rubber seed shells and rice husks and their composites using the modified Hummer method

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