Sains Malaysiana 39(2)(2010): 243–248

Preparation of Transition Metal Sulfide Nanoparticles via Hydrothermal Route

(Penyediaan Zarah Sulfida Logam Peralihan Bersaiz Nano Melalui Kaedah Hidroterma)

Fei-Ling Pua¹, Chin-Hua Chia¹, Sarani Zakaria*^{, 1}, Tze-Khong Liew¹

Mohd Ambar Yarmo² & Nay-Ming Huang¹

¹Pusat Pengajian Fizik Gunaan, Fakulti Sains dan Teknologi

Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia

²Pusat Pengajian Sains Kimia dan Teknologi Makanan, Fakulti Sains dan Teknologi

Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia

Received: 6 February 2009 / Accepted: 25 August 2009

ABSTRACT

Nano sized copper sulfide, iron sulfide and molybdenum sulfide were successfully synthesised via a simple hydrothermal method. Sodium thiosulfate pentahydrate (Na2S2O3¥5H2O) and hydroxylamine sulfate ((H3NO)2¥H2SO4) were used as the starting materials and reacted with the transition metal source at 200oC for 90 min. The products were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX) and Fourier transform infrared spectroscopy (FTIR). Spherical shape CuS and FeS2 nanoparticles with high crystallinity were successfully produced. The transmission electron micrographs revealed the well-dispersibility of the produced nanoparticles. Scanning electron micrograph showed the MoS2 nanoparticles possessed a spherical shape with sheet-like structure covering on the outer surface of the particles.

Keywords: Electron microscopy; hydrothermal; nanomaterials; sulfide; transition metal

ABSTRAK

Kuprum sulfida, ferum (IV) sulfida dan molibdenum sulfida bersaiz nano telah berjaya disintesis melalui kaedah hidroterma. Natrium tiosulfat pentahidrat (Na2S2O3¥5H2O) dan hidroksilamina sulfat ((H3NO)2¥H2SO4) telah digunakan sebagai bahan pemula untuk bertindak balas dengan sumber logam peralihan pada suhu 200oC selama 90 minit. Produk akhir telah dicirikan dengan pembelauan sinar-X (XRD), mikroskopi elektron transmisi(TEM), mikroskopi elektron imbasan(SEM), analisis penyebaran tenaga sinar-X (EDX), dan spektrometer infra-merah transformasi Fourier (FTIR). Nanozarah CuS dan FeS2 yang berbentuk sfera dan mempunyai darjah penghabluran yang tinggi berjaya dihasilkan. Mikrograf elektron transmisi menunjukkan taburan saiz nanozarah terserak dengan baik. Mikrograf elektron imbasan menunjukkan bahawa nanozarah MoS2 berbentuk sfera dengan permukaan luar zarah diliputi oleh struktur berbentuk kepingan.

Kata kunci: Hidroterma; logam peralihan; mikroskopi elektron; nanobahan; sulfida

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*Corresponding author; email: sarani@ukm.my