New Route Producing Large-Scale Graphene Nanosheets from Corn Waste for Electrochemical Material

سال انتشار: 1404
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 30

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شناسه ملی سند علمی:

JR_AJCS-8-2_015

تاریخ نمایه سازی: 16 مهر 1403

چکیده مقاله:

In this study, a novel method for synthesizing carbon-containing graphene nanosheets (CCG) from corn cob (CC) waste was developed. The CCG was produced through a two-stage pyrolysis process at various temperatures (۲۰۰ °C and ۳۰۰ °C) and durations (۰.۵, ۱, and ۱.۵ hours). This new method is expected to enhance the graphene quality and offer a cost-effective solution for graphene synthesis from waste materials. The structural characteristics of the CCG were confirmed by X-ray diffraction (XRD), which revealed peaks indicative of graphene, and Fourier transform infrared (FTIR) spectroscopy, which exhibited similarities to previously reported graphene spectra. The optimal CCG sample, synthesized at ۳۰۰ °C for ۰.۵ hours followed by ۱.۵ hours, was characterized by a hexagonal honeycomb structure and achieved the highest carbon content at ۸۷.۶۵% (w/w), as determined by scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS). The electrochemical properties of the CCG were evaluated using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and linear sweep voltammetry (LSV). Although the charge transfer resistance (Rct) of the CCG-modified glassy carbon electrode (GCE) was found to be higher (۳.۹۳ kΩ) compared to the bare GCE (۰.۳۰ kΩ), the suboptimal electrochemical performance may be attributed to the presence of impurities, particularly oxygen. Nonetheless, this research highlights the potential of CC waste as a sustainable precursor for the large-scale production of graphene, contributing to the development of eco-friendly materials.

نویسندگان

Kerista Tarigan

Department of Physics, Universitas Sumatera Utara, Medan, Indonesia

Rikson Siburian

Carbon Research Center, Universitas Sumatera Utara, Medan, Indonesia

Liang Wei Tang

Department of Chemistry, Universiti Malaya, Kuala Lumpur, Malaysia

Fajar Hutagalung

Department of Chemistry, Universitas Sam Ratulangi, Manado, Indonesia

Lewita Pasaribu

Carbon Research Center, Universitas Sumatera Utara, Medan, Indonesia

Yosia Gopas Oetama Manik

Department of Chemistry, Universitas Sumatera Utara, Medan, Indonesia

Ronn Goei

Nanyang Environment and Water Research Institute, ۱ Cleantech Loop, CleanTech One, Singapore, Republic of Singapore

Fathan Bahfie

Research Unit for Mineral Technology, Indonesian Institute of Sciences, South Lampung, Indonesia

Boon Goh

Low Dimensional Materials Research Centre, Department of Physics, Universiti Malaya, Kuala Lumpur, Malaysia

Maykel Manawan

National Research and Innovation Agency (BRIN), Tangerang, Banten, Indonesia

Frikson Jony Purba

Department of Elementary School Teacher Education, Universitas Quality, Medan, Indonesia

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