Sains Malaysiana 46(7)(2017): 1039–1045

http://dx.doi.org/10.17576/jsm-2017-4607-05

 

Synthesis of Graphene Flakes over Recovered Copper Etched in Ammonium Persulfate Solution

(Sintesis Grafin Serpih melalui Kuprum Pulih yang Dipunarkan dalam Larutan

Ammonium Persulfat)

 

M.K. NIZAM, D. SEBASTIAN, M.I. KAIRI, M. KHAVARIAN & A.R. MOHAMED*

 

School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, Seri Ampangan

14300 Nibong Tebal, Seberang Perai Selatan, Pulau Pinang, Malaysia

 

Diserahkan: 21 Disember 2016/Diterima: 1 Mac 2017

 

ABSTRACT

The synthesis of high quality graphene via economic way is highly desirable for practical applications. In this study, graphene flake was successfully synthesized on Cu/MgO catalyst derived from recovered Cu via etching in ammonium persulfate solution. Recovered Cu acted as efficient active metal in Cu/MgO catalyst with good crystal structure and composition according to XRD and XRF results. FESEM, EDX, HRTEM, Raman spectroscopy and SAED analysis were carried out on the synthesized graphene. The formation of single, bilayer and few layer of graphene from Cu/MgO catalyst derived from recovered Cu was feasible.

 

Keywords: CVD; flake; graphene; MgO; recovered Cu

 

ABSTRAK

Sintesis grafin berkualiti tinggi secara ekonomi adalah sangat diperlukan untuk aplikasi praktikal. Dalam kajian ini, grafin serpih telah berjaya disintesis menggunakan pemangkin Cu/MgO yang diperoleh daripada Cu pulih melalui punaran dalam larutan ammonium persulfat. Cu pulih bertindak sebagai logam aktif yang cekap dalam pemangkin Cu/MgO dengan struktur kristal yang baik dan komposisi berdasarkan keputusan XRD dan XRF. FESEM, EDX, HRTEM, Raman spektroskopi dan analisis SAED telah dijalankan ke atas grafin yang disintesis. Pembentukan tunggal, dwilapisan dan beberapa lapisan grafin daripada pemangkin Cu/MgO yang diperoleh daripada Cu pulih telah dicapai.

Kata kunci: CVD; grafin; MgO; pemulihan Cu; serpih

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*Pengarang untuk surat-menyurat; email: chrahman@usm.my