The Use of Diatomite as a Catalyst Carrier for the Synthesis of Carbon Nanotubes

Нажипкызы, М.; Nemkayeva, Renata R.; Nurgain, А.; Seitkazinova, Aigerim R.; Dinistanova, Balaussa K.; Issanbekova, Almagul T.; Zhylybayeva, Nurzhamal; Bergeneva, Nurgul S.; Mamatova, Gulnar U.

doi:10.3390/nano12111817

Cited by 3 publications

(1 citation statement)

References 21 publications

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“…Nanomaterials 2024, 14, x FOR PEER REVIEW 10 of 16 lower graphitization, often associated with a greater presence of defects or disordered carbon structures, such as amorphous carbon or disordered graphite. Therefore, the width of the G peak serves as a valuable indicator of the extent of graphitization in carbon materials [46,47].…”

Section: Electrochemical Characterizationmentioning

confidence: 99%

Activated Carbon Derived from Cucumber Peel for Use as a Supercapacitor Electrode Material

Nazhipkyzy,

Kurmanbayeva,

Seitkazinova

et al. 2024

Nanomaterials

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Biowaste conversion into activated carbon is a sustainable and inexpensive approach that relieves the pressure on its disposal. Here, we prepared micro-mesoporous activated carbons (ACs) from cucumber peels through carbonization at 600 °C followed by thermal activation at different temperatures. The ACs were tested as supercapacitors for the first time. The carbon activated at 800 °C (ACP-800) showed a high specific capacitance value of 300 F/g at a scan rate of 5 mV/s in the cyclic voltammetry and 331 F/g at the current density of 0.1 A/g in the galvanostatic charge–discharge analysis. At the current density of 1 A/g, the specific discharge capacitance was 286 F/g and retained 100% capacity after 2000 cycles. Their properties were analyzed by scanning electron microscopy, energy-dispersive X-ray analysis, porosity, thermal analysis, and Fourier-transform infrared spectroscopy. The specific surface area of this sample was calculated to be 2333 m2 g−1 using the Brunauer–Emmett–Teller method. The excellent performance of ACP-800 is mainly attributed to its hierarchical porosity, as the mesopores provide connectivity between the micropores and improve the capacitive performance. These electrochemical properties enable this carbon material prepared from cucumber peels to be a potential source for supercapacitor materials.

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Section: Electrochemical Characterizationmentioning

confidence: 99%

Activated Carbon Derived from Cucumber Peel for Use as a Supercapacitor Electrode Material

Nazhipkyzy,

Kurmanbayeva,

Seitkazinova

et al. 2024

Nanomaterials

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A review on progress and prospects of diatomaceous earth as a bio-template material for electrochemical energy storage: synthesis, characterization, and applications

Appiah,

Dzikunu,

Akinwamide

et al. 2024

Ionics

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This comprehensive review explores the remarkable progress and prospects of diatomaceous earth (DE) as a bio-template material for synthesizing electrode materials tailored explicitly for supercapacitor and battery applications. The unique structures within DE, including its mesoporous nature and high surface area, have positioned it as a pivotal material in energy storage. The mesoporous framework of DE, often defined by pores with diameters between 2 and 50 nm, provides a substantial surface area, a fundamental element for charge storage, and transfer in electrochemical energy conversion and storage. Its bio-templating capabilities have ushered in the creation of highly efficient electrode materials. Moreover, the role of DE in enhancing ion accessibility has made it an excellent choice for high-power applications. As we gaze toward the future, the prospects of DE as a bio-template material for supercapacitor and battery electrode material appear exceptionally promising. Customized material synthesis, scalability challenges, multidisciplinary collaborations, and sustainable initiatives are emerging as key areas of interest. The natural abundance and eco-friendly attributes of DE align with the growing emphasis on sustainability in energy solutions, and its contribution to electrode material synthesis for supercapacitors and batteries presents an exciting avenue to evolve energy storage technologies. Its intricate structures and bio-templating capabilities offer a compelling path for advancing sustainable, high-performance energy storage solutions, marking a significant step toward a greener and more efficient future. Graphical Abstract

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Research on diatomite from Polish deposits and the possibilities of its use

Marczyk

Pławecka

Hebdowska-Krupa

et al. 2022

Journal of Achievements in Materials and Manufacturing Engineering

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Diatomite from a deposit in Jawornik Ruski (Poland) has been selected as the material for study. The paper aimeds to show the possibility of using diatomite from the Carpathian Foothills as a sorbent of petroleum substances.Diatomite in the delivery condition (DC) and diatomite after calcination were used for this study. The material was calcined at 600, 650, 750, 850 and 1000°C. The diatomaceous earth was then granulated. The morphology of diatomite was observed using SEM. Particle size distribution was determined by Laser Particle Analyzer, chemical composition was determined by XRF, and mineralogical composition by XRD. Specific surface area, pore volume and pore size were determined. Thermal analysis (TG, DTA) was carried out. Absorption capacity tests were performed and the effect of diatomite addition on water absorption of concrete samples was determined.Within the framework of the study, it was shown that diatomite from the Jawornik deposit could be successfully used as a sorbent for petroleum substances. The absorption capacity of calcined at 1000°C diatomaceous earth was 77%. The obtained result exceeds the effectiveness of previously used absorbents, for which the sorption level is 60-70%. This allows commercial use of diatomite from deposits in Poland. In addition, water absorption tests have shown that diatomaceous earth can successfully replace cement used in concrete productione. The most favourablee effect on the reduction of water absorption is the addition of diatomite in the amount of 10%.The properties of diatomaceous earth from the Jawornik Ruski deposit indicate its high potential for use in the synthesis of geopolymers, which is important not only from an economic but also from an ecological point of view.The novelty of this work is the demonstration of the possibility of using diatomite as a sorbent of petroleum substances with high efficiency, exceeding the previously used sorbents.

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The Use of Diatomite as a Catalyst Carrier for the Synthesis of Carbon Nanotubes

Cited by 3 publications

References 21 publications

Activated Carbon Derived from Cucumber Peel for Use as a Supercapacitor Electrode Material

Activated Carbon Derived from Cucumber Peel for Use as a Supercapacitor Electrode Material

A review on progress and prospects of diatomaceous earth as a bio-template material for electrochemical energy storage: synthesis, characterization, and applications

Research on diatomite from Polish deposits and the possibilities of its use

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