Influence of Precursor Type on Activated Carbon Prepared by Phosphoric Acid-Chemical Activation for Supercapacitor Applications DOI Open Access
Sujan Bhandari,

Kirti B. Rajguru,

Chhabi Lal Gnawali

и другие.

Journal of Nepal Physical Society, Год журнала: 2023, Номер 9(3), С. 12 - 17

Опубликована: Дек. 31, 2023

Phosphoric acid can be used to activate different precursors and produce activated carbon (AC), a porous material with high adsorption capacity surface area. This research shows how AC is made using locally available precursors, namely amla seeds harro seeds. We compare the carbonization temperature precursor type affect area, pore structure, electrochemical properties of AC. use methods analyze samples, such as scanning electron microscopy, methylene blue number, iodine cyclic voltammetry. show that best conditions for making depend on activation temperature.

Язык: Английский

Cell-derived nanomaterials for biomedical applications DOI Creative Commons
Li Xian Yip, Jinping Wang,

Yuling Xue

и другие.

Science and Technology of Advanced Materials, Год журнала: 2024, Номер 25(1)

Опубликована: Фев. 7, 2024

The ever-growing use of nature-derived materials creates exciting opportunities for novel development in various therapeutic biomedical applications. Living cells, serving as the foundation nanoarchitectonics, exhibit remarkable capabilities that enable bioinspired and biomimetic systems, which will be explored this review. To understand development, we first revisited anatomy cells to explore characteristics building blocks life is relevant. Interestingly, animal have amazing due inherent functionalities each specialized cell type. Notably, versatility membranes allows red blood neutrophils' cloak inorganic nanoparticles would naturally eliminated by immune system. This underscores how facilitate interactions with surroundings through recognition, targeting, signalling, exchange, cargo attachment. functionality membrane-coated can tailored improved strategically engineering membrane, selecting from a variety known distinct properties. On other hand, plant synthesizing nanoparticles. They play role synthesis metal, carbon-based, polymer nanoparticles, used applications such antimicrobials or antioxidants. One versatile components found photosynthetic system, particularly thylakoid, pigment chlorophyll. While there are challenges consistently these derived nature, exploration begins unveil endless possibilities nanoarchitectonics research.

Язык: Английский

Процитировано

20

Thermochemical Activation of Wood with NaOH, KOH and H3PO4 for the Synthesis of Nitrogen-Doped Nanoporous Carbon for Oxygen Reduction Reaction DOI Creative Commons
Gaļina Dobele, Aleksandrs Voļperts, Ance Pļavniece

и другие.

Molecules, Год журнала: 2024, Номер 29(10), С. 2238 - 2238

Опубликована: Май 10, 2024

Carbonization of biomass residues followed by activation has great potential to become a safe process for the production various carbon materials applications. Demand commercial use biomass-based is growing rapidly in advanced technologies, including energy sector, as catalysts, batteries and capacitor electrodes. In this study, were synthesized from hardwood using two carbonization methods, with H3PO4, KOH NaOH doping nitrogen. Their chemical composition, porous structure, thermal stability structural order samples studied. It was shown that, despite differences, are active catalysts oxygen reduction reactions. Among investigated materials, NaOH-activated exhibited lowest Tafel slope values, −90.6 −88.0 mV dec–1, which very close values Pt/C at −86.6 dec–1.

Язык: Английский

Процитировано

9

Fabrication of nanoporous carbon constructions derived from young coconut husk fibers for symmetrical supercapacitor applications DOI
Awitdrus Awitdrus,

Agustino Agustino,

Ridho Nopriansyah

и другие.

Bioresource Technology Reports, Год журнала: 2024, Номер 25, С. 101765 - 101765

Опубликована: Фев. 1, 2024

Язык: Английский

Процитировано

4

Enhanced electrochemical performance of activated carbon derived from Acacia catechu bark by KOH activation for supercapacitor application DOI Creative Commons
Pawan Kumar Mishra, Sabin Aryal, Hari Bhakta Oli

и другие.

E3S Web of Conferences, Год журнала: 2025, Номер 610, С. 01004 - 01004

Опубликована: Янв. 1, 2025

The compelling necessity for sustainable energy storage solutions has propelled the advancement of high-performance strategies. Conventional carbon materials derived from fossils sources cause limitations being high rate, processing challenges, and potential harm. Conversely, activated sourced biomass emerged as a promising substitute due to its abundant presence in nature, content, ease with minimal toxicity. This study outlines production matured bark Acacia catechu through sequence processes, including pre-carbonization, carbonization, activation at varying temperatures utilizing potassium hydroxide (KOH) an activating agent. prepared specimen underwent analysis using diverse methods such iodine methylene blue number techniques, XRD, FTIR-test, Raman test, TEM, capacity was appraised via CV, GCD, EIS, CV stability tests paying three-electrode arrangement. synthesized 800 °C (KBAC-8) demonstrated specific capacitance 264.51 F/g 1 A/g, outstanding retention 94.64% superior coulombic efficiency equated KBAC-6 KBAC-4. Overall results suggest relevance KBAC-8 supercapacitor applications subordinate resistance.

Язык: Английский

Процитировано

0

Development of C/Ag nanocomposites for adsorption and immobilization of iodine-131 (131I) from the urine of thyroid ablation therapy patients DOI
Chaidir Pratama, Marlina Marlina, Miftakhul Munir

и другие.

Journal of Radioanalytical and Nuclear Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Май 8, 2025

Язык: Английский

Процитировано

0

Petroleum Pitch-Derived Porous Carbon Materials as Metal-Free Catalyst for Dry Reforming of Methane DOI Creative Commons

Kaixuan Huo,

Yu Sun,

Hu Jiang

и другие.

Molecules, Год журнала: 2024, Номер 29(19), С. 4642 - 4642

Опубликована: Сен. 29, 2024

Porous carbon materials have gained increasing attention in catalysis applications due to their tailorable surface properties, large specific area, excellent thermal stability, and low cost. Even though porous been employed for thermal-catalytic dry reforming of methane (DRM), the structure-function relationship, especially critical factor affecting catalytic performance, is still under debate. Herein, various carbon-based samples with disparate pore structures properties are prepared by alkali (K

Язык: Английский

Процитировано

2

FeCl 3 -modified carbon as an electrode material for supercapacitors: preparation, analysis, and electrochemical properties DOI
Vitalii Vashchynskyi, I. V. Semkiv

Biofuels, Год журнала: 2024, Номер unknown, С. 1 - 9

Опубликована: Июнь 6, 2024

The necessity to combat the effects of global warming has made use renewable energy sources essential. Much attention been focused on utilizing various types biomass that can provide high productivity and serve as an alternative traditional fossil fuels. This study specifically aims investigate electrochemical properties carbon materials obtained from plant-based raw after biofuel production by carbonization melon citrus peels at 300 °C chemical activation using FeCl3. It is established with FeCl3 700 led dehydration, degradation matrix, development a microporous surface. For two-electrode cell, specific capacitance values discharge current 50 mA are 196 F/g in aqueous KOH solution 78 TEABF4. Based impedance spectroscopy results, equivalent electrical circuit modeled, revealing storage mechanism electrode-electrolyte interface, physical interpretation each element provided. Most importantly, device remains stable no loss 1000 cycles. research findings may contribute expanding cost-effective electrode component for supercapacitors.

Язык: Английский

Процитировано

1

Nanoarchitectonics for supercapacitor: biomass vs. fullerene DOI Creative Commons
Lok Kumar Shrestha, Katsuhiko Ariga

Frontiers in Batteries and Electrochemistry, Год журнала: 2024, Номер 3

Опубликована: Авг. 23, 2024

The recognition of the importance nanostructures is mainly due to development nanotechnology. For further developments in materials sciences, a concept that integrates nanotechnology with material chemistry fabricate functional has be proposed. Nanoarchitectonics will carry out this task. In nanoarchitectonics, we architect systems from nano-units (atoms, molecules, nanomaterials). methodology not specific any particular or application. It covers wide range. Therefore, nanoarchitectonics can thought as method for everything science. As typical demonstrations usages review paper presents our work on supercapacitors. We divide it into two categories different approaches. first carbon supercapacitor electrode biomass. second category preparing using structures created by supramolecular assembly fullerenes such C 60 and 70 . By presenting examples opposite starting materials, complex natural material, an ultimately simple molecule, demonstrate versatility breadth possibilities approach.

Язык: Английский

Процитировано

0

Influence of Precursor Type on Activated Carbon Prepared by Phosphoric Acid-Chemical Activation for Supercapacitor Applications DOI Open Access
Sujan Bhandari,

Kirti B. Rajguru,

Chhabi Lal Gnawali

и другие.

Journal of Nepal Physical Society, Год журнала: 2023, Номер 9(3), С. 12 - 17

Опубликована: Дек. 31, 2023

Phosphoric acid can be used to activate different precursors and produce activated carbon (AC), a porous material with high adsorption capacity surface area. This research shows how AC is made using locally available precursors, namely amla seeds harro seeds. We compare the carbonization temperature precursor type affect area, pore structure, electrochemical properties of AC. use methods analyze samples, such as scanning electron microscopy, methylene blue number, iodine cyclic voltammetry. show that best conditions for making depend on activation temperature.

Язык: Английский

Процитировано

0