Preparation and evaluation of ferrite-silica aerogel nanocomposite

Katagiri, Naruhito; Adachi, Nobuyasu; Ota, Toshitaka

doi:10.2109/jcersj2.122.29

Cited by 4 publications

(4 citation statements)

References 4 publications

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“…The analysis showed that the structure of obtained carbon material was crystalline, as indicated by the miller indices of (222), ( 220) and (200). Using the Debye-Scherrer's formula, the crystalline size of the carbon material was found to be 31.03 nm [39].…”

Section: Resultsmentioning

confidence: 99%

Sustainable Synthesis of Porous Biomass-Derived Carbon from Tecoma capensis for High Performance Supercapacitors: Characterization and Electrochemical Evaluation

Tharani,

Prithiba

2024

ajc

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Biowaste carbon products possess interesting physico-chemical properties and are cost-effective due to their remarkable characteristics. Biomass carbon derived from Tecoma capensis (TCL) was processed using pyrolysis at a controlled temperature in an eco-friendly, innovative and sustainable way to develop biomass-derived carbon material. The aim of this study is to demonstrate the facile synthesis of porous carbon compounds from biowaste and evaluate their use in supercapacitors. Various analytical methods, such as structural analysis, morphological studies and electrochemical studies, have been employed to characterize the carbon material generated from biomass. Electrochemical performance evaluation was conducted through cyclic voltammetry and galvanostatic charge-discharge studies utilizing 1 M H2SO4 and 1 M KOH aqueous electrolyte, which exhibited a specific capacitance of 238 F g-1. The outcomes of the studies suggested that the eco-friendly, straightforward process can be utilized to prepare biomass carbon for the electrochemical energy storage applications in an efficient and sustainable manner.

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Section: Resultsmentioning

confidence: 99%

Sustainable Synthesis of Porous Biomass-Derived Carbon from Tecoma capensis for High Performance Supercapacitors: Characterization and Electrochemical Evaluation

Tharani,

Prithiba

2024

ajc

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“…The preparation process used was the same as that previously reported [5][6][7]. Tetramethyl orthosilicate (TMOS; Tokyo Chem.…”

Section: Methodsmentioning

confidence: 99%

“…We have thus considered the preparation of a variety of functional aerogels by combining functional nanoparticles and silica aerogel. We have already reported on the preparation of a magnetic aerogel that consists of a ferrite-silica aerogel nanocomposite [5,6], and dielectric aerogels that consist of a BaTiO 3 -silica aerogel nanocomposite and a carbon-silica aerogel nanocomposite [7]. Anderson et al also reported on various composite aerogels [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Preparation and evaluation of Au nanoparticle–silica aerogel nanocomposite

Katagiri

Ishikawa

Adachi

et al. 2015

Journal of Asian Ceramic Societies

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A Au nanoparticle-silica aerogel nanocomposite was prepared by the gelling of a tetramethyl orthosilicate (TMOS)/ethanol solution together with Au nanoparticles and drying the wet gel in supercritical carbon dioxide. The aerogel nanocomposite contained Au nanoparticles at a concentration of 0.268 ppm. The bulk density, porosity, and specific surface area of the obtained nanocomposite were 0.126 g/cm 3 , 94%, and 890 m 2 /g, respectively. The nanocomposite was reddish-violet in color and transparent, and had a relative permittivity of approximately 6 with a dielectric loss of ca. 1 × 10 −3 in the range of 10 MHz to 1 GHz.

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“…In addition, we have prepared a ferrite-silica aerogel nanocomposite from a mixture of silica sol and ferrite nanoparticles using a supercritical drying process. 8), 9) This magnetic aerogel could be applied to a radiowave absorber and for drug delivery.…”

Section: Introductionmentioning

confidence: 99%

Addition of BaTiO<sub>3</sub> and carbon nanoparticles to silica aerogel and its dielectric properties

Katagiri

Adachi

Ota

2014

J. Ceram. Soc. Japan

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A tetramethylorthosilicate(TMOS)/ethanol solution was gelled together with BaTiO 3 nanoparticles or carbon nanoparticles. The wet gel was dried in supercritical carbon dioxide, resulting in aerogel nanocomposites with compositions in the range of BaTiO 3 / SiO 2 = 1/100 to 20/100 and C/SiO 2 = 20/100 to 80/100. The bulk density of the aerogel obtained was in the range of 0.1 to 0.2 g/cm 3 , the porosity was about 95%, and the specific surface area was in the range of 400 to 700 m 2 /g. These values represent the characteristics of the aerogel. The relative permittivity and dielectric loss were respectively approximately 2 and 5 © 10 ¹3 for the BaTiO 3 -silica aerogel nanocomposite, and in the range of 5 to 10 and 0.012 to 0.4 for the carbon-silica aerogel nanocomposite.

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Preparation and evaluation of ferrite-silica aerogel nanocomposite

Cited by 4 publications

References 4 publications

Sustainable Synthesis of Porous Biomass-Derived Carbon from Tecoma capensis for High Performance Supercapacitors: Characterization and Electrochemical Evaluation

Sustainable Synthesis of Porous Biomass-Derived Carbon from Tecoma capensis for High Performance Supercapacitors: Characterization and Electrochemical Evaluation

Preparation and evaluation of Au nanoparticle–silica aerogel nanocomposite

Addition of BaTiO<sub>3</sub> and carbon nanoparticles to silica aerogel and its dielectric properties

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