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

Yeleuov, Mukhtar; Seidl, Christopher; Temirgaliyeva, T. S.; Taurbekov, Azamat; Приходько, Н. Г.; Lesbayev, B. T.; Sultanov, Fail; Daulbayev, Chingis; Kumekov, S. E.

doi:10.3390/en13184943

Cited by 24 publications

(12 citation statements)

References 30 publications

(42 reference statements)

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“…In the present scenario, the ISA-NaOH sintered product shown an effective degradation rate as it is used as a cost-effective and eco-friendly adsorbent. This material could be further explored in degradation Chemistry of the organic aromatic substance including various dye molecules and derivatives [20, 21].…”

Section: Resultsmentioning

confidence: 99%

Determination of Adsorption of Methylene Blue Dye by Incense Stick Ash Waste and Its Toxicity on RTG-2 Cells

Yadav

Choudhary²,

Ali

et al. 2022

Adsorption Science & Technology

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Incense stick ash (ISA) has traces of toxic heavy metals which have an adverse effect on the environment. Every year, tonnes of ISA are disposed of in rivers and other water bodies which leads to water pollution and affects the natural water resources. ISA has several value-added minerals which could be modified or functionalized for environmental cleanup. Here, in the current research work, ISA was transformed into a flower-like noble porous material by mixing ISA and NaOH in a 1 : 1 ratio followed by calcination at 600°C for six hours in a muffle furnace. The developed material was analyzed by sophisticated instruments for the identification of the properties. The microscopic techniques revealed the micron-sized flower-like structure, while the XRD showed peaks at 30–33° which indicates the transformation of the calcite and silicate phases into new-phase mineral. FTIR also revealed bands in regions of 500–1200 cm−1 and new bands near 450 cm−1. EDS confirmed the presence of Na in the sintered product and the transformation of the ISA. Finally, the sintered product potential was assayed for the removal of methylene blue dye from wastewater using an adsorption mechanism. The removal efficiency of dye reached up to 70% within one hour only. It was found that the ISA sintered product has the potential to remove MB dye efficiently from wastewater and also reduce solid waste pollution. Microculture tetrazolium assay (MTT) and lactate dehydrogenase (LDH) assays were performed to evaluate the cytotoxicity of the sintered incense stick ash product on RTG-2 cells. The sintered incense stick ash product induced cytotoxicity on RTG-2 cells in a dose-dependent manner. Sintered ISA products have the potential to remove methylene blue dye efficiently from wastewater and reduce solid waste pollution.

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Section: Resultsmentioning

confidence: 99%

Determination of Adsorption of Methylene Blue Dye by Incense Stick Ash Waste and Its Toxicity on RTG-2 Cells

Yadav

Choudhary²,

Ali

et al. 2022

Adsorption Science & Technology

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“…In [12], activated carbon was derived from rice husk and further modified by nickel hydroxide. The modified activated carbon was obtained by a twostep chemical procedure and showed a very high specific surface area of 3292 m 2 •g -1 .…”

Section: Nio/с Composites For Energy Storage Systemsmentioning

confidence: 99%

Carbon/NiO Compositional Fibers

Мансуров

Смагулова

Imash³

et al. 2022

Eurasian Chem. Tech. J.

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This article presents the results of the synthesis of carbon-NiO composite fibers. Fibers doped with NiO particles are of practical interest for applications in sensors, energy storage systems, photocatalysts, etc. Four-component initial fibers based on polyacrylonitrile (PAN), activated carbon (AC), coal tar pitch (CTP), and NiO particles were obtained. CTP was obtained by thermal treatment of coal tar, AC by carbonization of apricot kernels, NiO by solution combustion synthesis. PAN, CTP, and AC are a source of carbon, but each of them plays a specific role. PAN is the basis of carbon fibers and a fiber-forming material, CTP is a technogenic waste added to replace polymer particles, AC is an additive that could increase the carbon content and the porosity of the final fibers. The fibers were obtained using the electrospinning method, which makes it possible to use complex suspensions and obtain fibers of various diameters. PAN:CTP:AC:NiO fibers were obtained. Next, the processes of stabilization and carbonization of the fibers were carried out. The fibers at each stage were examined by scanning electron microscopy and EDAX. The result of the synthesis was carbon/NiO fibers with a diameter of 100‒300 nm. The resulting fibers are promising for practical applications due to the one-dimensional structure of the fibers and better adhesion between the fiber and NiO particles.

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“…SC is widely used in new energy vehicles, portable electronic products, and uninterruptible power supply and other fields . Structure and properties of different electrode materials, − strongly influence the performance of SC. Among these materials, activated carbon (AC) derived from different carbonaceous precursors is preferred because it is widely available, inexpensive, and has good electrical conductivity.…”

Section: Introductionmentioning

confidence: 99%

Acid-Alkali Deep Deashing and Alkali Activation of Coal Gasification Fine Slag for Supercapacitive Electrode Application

Zhang,

Xiong,

Cheng

et al. 2024

ACS Appl. Electron. Mater.

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Nowadays, coal gasification fine slag (CGFS) generated during the coal gasification process has become difficult to treat bulk solid waste. CGFS contains high levels of residual carbon, which is difficult to recycle due to the tight binding of minerals with residual. In our study, the carbon source of active carbon (P-AC) was obtained by the molten-caustic leaching (MCL) method, in which alkaline leaching solution can be further used as a ceramic precursor. Subsequently, the KOH activation method was used to prepare the activated carbon (AC) electrode materials. The deashing conditions and activation parameters were optimized carefully. The results indicate that the AC-800 electrode material exhibits excellent specific capacitance and cycle stability; the main reason for good performance is the hierarchical porous structure of AC-800 that not only provides the path for ion diffusion but also strengthens the fluidity of electrolyte inside the material. This paper offers an effective method to enhance the added value of CGFS by a fluoride-free ash removal process.

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

Cited by 24 publications

References 30 publications

Determination of Adsorption of Methylene Blue Dye by Incense Stick Ash Waste and Its Toxicity on RTG-2 Cells

Determination of Adsorption of Methylene Blue Dye by Incense Stick Ash Waste and Its Toxicity on RTG-2 Cells

Carbon/NiO Compositional Fibers

Acid-Alkali Deep Deashing and Alkali Activation of Coal Gasification Fine Slag for Supercapacitive Electrode Application

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