Synthesis of activated carbon and its rGO composite using pomegranate peels: its photocatalytic and electrode material for high capacitance supercapacitor applications

IF 2.2 4区 化学 Q3 CHEMISTRY, MULTIDISCIPLINARY Journal of the Iranian Chemical Society Pub Date : 2024-06-24 DOI:10.1007/s13738-024-03030-w
B. V. Raghu Vamshi Krishna, T. Nageswara Rao
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Abstract

The peels of pomegranate fruits were employed in the current work to produce activated carbon (AC) using the high temperature carbonization method. The generated activated carbon using pomegranate peel (AC-PP) powder was discovered to have a layered and porous form as revealed by scanning electron microscopic images. It was discovered that activated carbon had an energy gap (Eg) of 4.454 eV. The photocatalytic experiments performed for the degradation of fast blue dye reveal that after 120 min of UV light irradiation, the AC-PP powder achieve a decolorization rate of 62.9%, respectively. Current was collected through the nickel mesh, and the electrochemical elements in rGO, the principal active component in AC-PP powder, were supported by the mesh. Nickel mesh electrodes were analysed using impedance spectroscopy and cyclic voltammetry. Both AC-PP and AC-PP-rGO electrodes' hydrogen diffusion coefficients were determined to be 1.134 10–4 and 0.0014 cm2 s−1, respectively. Experiments with galvanostatic charge–discharge revealed the produced AC-PP and AC-PP-rGO electrodes' superior capacitance potential, which is useful in the fabrication of supercapacitors. The AC-PP and AC-PP-rGO electrodes have 175.6 and 324.8 F g−1 specific capacitances. These unique impacts can also be assessed by energy storage performance using affordable carbon resources in various applications. These novel results might be used for developing up particular resources for environmental and power storage applications.

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利用石榴皮合成活性炭及其 rGO 复合材料:用于高电容超级电容器应用的光催化和电极材料
本研究利用石榴果皮,采用高温碳化法生产活性炭(AC)。扫描电子显微镜图像显示,利用石榴皮粉末生成的活性炭(AC-PP)具有分层和多孔的形式。研究发现,活性炭的能隙(Eg)为 4.454 eV。光催化降解快蓝染料的实验表明,在紫外光照射 120 分钟后,AC-PP 粉末的脱色率分别达到 62.9%。电流通过镍网收集,AC-PP 粉末中的主要活性成分 rGO 中的电化学元素得到了镍网的支持。使用阻抗光谱法和循环伏安法对镍网电极进行了分析。经测定,AC-PP 和 AC-PP-rGO 电极的氢扩散系数分别为 1.134 10-4 和 0.0014 cm2 s-1。电流静态充放电实验显示,制得的 AC-PP 和 AC-PP-rGO 电极具有优异的电容电势,这对制造超级电容器非常有用。AC-PP 和 AC-PP-rGO 电极的比电容分别为 175.6 和 324.8 F g-1。这些独特的影响还可以通过在各种应用中使用负担得起的碳资源来评估其储能性能。这些新成果可用于开发环境和电力存储应用的特殊资源。
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来源期刊
CiteScore
4.40
自引率
8.30%
发文量
230
审稿时长
5.6 months
期刊介绍: JICS is an international journal covering general fields of chemistry. JICS welcomes high quality original papers in English dealing with experimental, theoretical and applied research related to all branches of chemistry. These include the fields of analytical, inorganic, organic and physical chemistry as well as the chemical biology area. Review articles discussing specific areas of chemistry of current chemical or biological importance are also published. JICS ensures visibility of your research results to a worldwide audience in science. You are kindly invited to submit your manuscript to the Editor-in-Chief or Regional Editor. All contributions in the form of original papers or short communications will be peer reviewed and published free of charge after acceptance.
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