Synthesis and characterization of graphene layers from rice husks

Seitzhanova, M. A.; Chenchik, Dmitry I.; Yeleuov, Mukhtar; Mansurov, Zulkhair A.; Capua, R. Di; Elibaeva, N. S.

doi:10.15328/cb986

Cited by 13 publications

(14 citation statements)

References 14 publications

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“…The yield of the carbonized carbon product, obtained from raw rice husk, after the pyrolysis carbonization step was 43.7 wt.%. After the thermochemical activation step, the yield of AGC reached 11 wt.%; the modest yield is in accordance with other authors [13,24] and is due to significant amounts of silica in rice husk [11]. As graphene shows excellent performance in supercapacitor applications and is furthermore promising for the introduction of the pseudo-capacitance material, it was intended to gain a significant amount of graphene in the activated carbon.…”

Section: Resultssupporting

confidence: 86%

“…However, the high amount of silica in rice husk is still challenging for the production of high EDLC electrode materials [11,12]. Procedures for obtaining graphene from rice husk have also been reported in [13][14][15]. Commonly studied pseudo-capacitive materials especially include transition metal oxides, such as NiO, MnO 2 , CoO 3 , etc.…”

Section: Introductionmentioning

confidence: 99%

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Modified Activated Graphene-Based Carbon Electrodes from Rice Husk for Supercapacitor Applications

et al. 2020

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The renewable biomass material obtained from rice husk, a low-cost agricultural waste, was used as a precursor to synthesize a highly porous graphene-based carbon as electrode material for supercapacitors. Activated graphene-based carbon (AGC) was obtained by a two-step chemical procedure and exhibited a very high specific surface area (SSA) of 3292 m2 g−1. The surface morphology of the synthesized materials was studied using scanning and transmission electron microscopy (SEM, TEM). Furthermore, the AGC was modified with nickel hydroxide Ni(OH)2 through a simple chemical precipitation method. It was found that the most significant increase in capacitance could be reached with Ni(OH)2 loadings of around 9 wt.%. The measured specific capacitance of the pure AGC supercapacitor electrodes was 236 F g−1, whereas electrodes from the material modified with 9 wt.% Ni(OH)2 showed a specific capacitance of up to 300 F g−1 at a current density of 50 mA g−1. The increase in specific capacitance achieved due to chemical modification was, therefore 27%.

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Section: Resultssupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Modified Activated Graphene-Based Carbon Electrodes from Rice Husk for Supercapacitor Applications

et al. 2020

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“…Few layers of graphene were obtained from this method. [34] Akhavan et al, used plant waste such as mulberry tree wood, leaf, sugarcane bagasse and fruit waste, animal waste such as chicken bone and cow dung, newspaper and industrial waste to synthesize GO and rGO by chemical exfoliation method. The materials were made into charcoal by burning.…”

Section: Chemical Exfoliationmentioning

confidence: 99%

Biomass‐Derived Graphene‐Based Nanocomposites: A Futuristic Material for Biomedical Applications

et al. 2022

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Advanced research in the field of material science and biomedicine leads to the development of materials that are efficient and cost‐effective. Graphene has been a widely studied material in recent years and graphene‐based materials exhibit exceptional properties that can be used for applications ranging from biomedical to electronics. In biomedical field, graphene‐based materials are employed in drug delivery, sensing, bioimaging and tissue engineering. However, the production of graphene from graphite and chemical precursors has certain drawbacks such as toxicity, expensive, complex fabrication process, etc. To overcome these, biomass have become a new source for graphene materials. Different types of biomass sources and various preparation methods for graphene‐based materials were reviewed. Here, the applications of biomass derived graphene‐based materials in biomedical field were discussed.

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“…As a consequence, rice husk is being considered a substantial agricultural waste. The potential use of rice husk has been implemented for synthesizing graphene [26][27][28][29][30] (see Figure 2). However, it is also utilized to manufacture silica products [31,32] because it contains more amount Si concentration.…”

Section: Different Bioprecursorsmentioning

confidence: 99%

A Review on Graphene Based Materials and Their Antimicrobial Properties

2021

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Graphene-based materials are found as excellent resources and employed as efficient anti-microbial agents, and they have been receiving significant attention from scientists and researchers in this regard. By giving special attention to recent applications of graphene-based materials, the current review is dedicated to unveiling the antimicrobial properties of graphene and its hybrid composites and their preparation methods. Different factors like the number of layers, concentration, size, and shape of the antibacterial activity are thoroughly discussed. Graphene-based materials could damage the bacteria physically by directly contacting the cell membrane or wrapping the bacterial cell. It can also chemically react to bacteria through oxidative stress and charge transfer mechanisms. This review explains such mechanisms thoroughly and summarizes the antibacterial applications (wound bandages, coatings, food packaging, etc.) of graphene and its hybrid materials.

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Synthesis and characterization of graphene layers from rice husks

Cited by 13 publications

References 14 publications

Modified Activated Graphene-Based Carbon Electrodes from Rice Husk for Supercapacitor Applications

Modified Activated Graphene-Based Carbon Electrodes from Rice Husk for Supercapacitor Applications

Biomass‐Derived Graphene‐Based Nanocomposites: A Futuristic Material for Biomedical Applications

A Review on Graphene Based Materials and Their Antimicrobial Properties

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