Green synthesis of zirconium oxide/reduced graphene oxide (ZrO2/rGO) composite using Nyctanthes arbor-tritis for high-performance supercapacitor application

IF 2.7 Q2 Chemistry

Chemical Data Collections Pub Date : 2025-09-13 DOI:10.1016/j.cdc.2025.101207

Suveksha Tamang , Gunja Prasad , Joydeep Biswas , Nayan Kamal Bhattacharyya

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Abstract

This study reports the syntheses of graphene oxide (GO), reduced graphene oxide (rGO), and a composite of zirconium oxide and rGO (ZrO₂/rGO). The rGO was procured via a microwave-assisted green synthesis technique. Nyctanthes arbor-tristis (Parijat) leaf extract was employed as the primary reductant, leveraging their phytochemicals as reducing and capping agents. To ensure effective reduction of GO layers, l-ascorbic acid has been used as an auxiliary reducing agent. The mild reducing agent enables controlled reduction while preserving functional groups. The synthesized materials were characterized through optical, vibrational, and morphological analyses. Furthermore, electrochemical testing via cyclic voltammetry and galvanostatic charge-discharge revealed a specific capacitance of 210.58 F/g at 5 mV/s for the ZrO₂/rGO composite. Power density of 6300 W/kg was achieved, indicating the composite's potential for rapid energy delivery.

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绿色合成氧化锆/还原性氧化石墨烯（ZrO2/rGO）复合材料，用于高性能超级电容器应用

本研究报道了氧化石墨烯（GO）、还原氧化石墨烯（rGO）和氧化锆-氧化石墨烯复合物（ZrO2/rGO）的合成。rGO是通过微波辅助绿色合成技术获得的。以夜草叶提取物为主要还原剂，利用其植物化学物质作为还原剂和封盖剂。为了确保氧化石墨烯层的有效还原，l-抗坏血酸被用作辅助还原剂。温和还原剂使控制还原，同时保留官能团。通过光学、振动和形态分析对合成材料进行了表征。此外，通过循环伏安法和恒流充放电的电化学测试表明，ZrO2/rGO复合材料在5 mV/s下的比电容为210.58 F/g。功率密度达到6300 W/kg，表明该复合材料具有快速供能的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chemical Data Collections Chemistry-Chemistry (all)

CiteScore

6.10

自引率

0.00%

发文量

169

审稿时长

24 days

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