Sains Malaysiana 42(2)(2013): 175–181

 

Cu-Doped TiO2 Nanopowders Synthesized by Sonochemical-Assisted Process

(Serbuk Nano Cu Terdop TiO2 Disediakan Melalui Proses Sonokimia Terbantu)

 

 

Narongdet Wongpisutpaisan1*, Naratip Vittayakorn1,2, Anucha Ruangphanit3

& Wisanu Pecharapa1,4

 

1College of Nanotechnology, King Mongkut’s Institute of Technology Ladkrabang

Chalongkrung Rd., Ladkrabang, Bangkok 10520, Thailand

 

2Department of Chemistry, Faculty of Science, King Mongkut’s Institute of Technology Ladkrabang, Chalongkrung Rd., Ladkrabang, Bangkok, 10520, Thailand

 

3Thai Microelectronics Center, Wangtakien District, Amphur Muang, Chachoengsao, 24000, Thailand

 

4ThEP Center, CHE, 328 Si Ayutthaya Rd. Bangkok 10400, Thailand

 

Diserahkan: 7 Januari 2012 / Diterima: 21 Mei 2012

 

ABSTRACT

Cu-doped TiO2 nanopowders were prepared by sonochemical-assisted process via a precursor solution of titanium isopropoxide, copper nitrate trihydrate and sodium hydroxide in the presence of polyvinyl alcohol in combination with calcinations process. The as-synthesized products were calcined at various temperatures ranging from 500-1000°C. The physical microstructures, morphologies and chemical bonding of as-calcined nanopowders were characterized by X-ray diffraction, scanning electron microscopy and Fourier transform infrared spectroscopy. It was noted that the crystallization, structure and size of the powders were strongly dependent on calcinations temperature. Their optical absorption properties were investigated and the results suggested that Cu dopant could significantly improve the optical absorption properties of TiO2.

 

Keywords: Cu-doped TiO2; nanopowders; sonochemical-assisted process

 

ABSTRAK

Serbuk nano Cu-terdop TiO2 telah disediakan melalui proses sonokimia terbantu melalui penggunaan larutan titanium isopropoksida, kuprum nitrat trihidrat dan natrium hidroksida dengan kehadiran polivinil alkohol berserta gabungan proses pemanasan. Produk yang tersintesis dipanaskan pada suhu yang berbeza, antara 500-1000°C. Mikrostruktur, morfologi dan ikatan kimia serbuk nano yang dipanaskan telah dicirikan menggunakan pembelauan sinar-X, mikroskop elektron imbasan dan spektroskopi transformasi Fourier inframerah. Penghabluran, struktur dan saiz serbuk sangat bergantung kepada suhu pemanasan. Sifat penyerapan optik telah diselidik dan hasilnya menunjukkan bahawa Cu terdop dapat meningkatkan sifat penyerapan optik TiO2 secara signifikan.

 

Kata kunci: Cu-terdop TiO2; proses sonokimia terbantu; serbuk nano

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*Pengarang untuk surat-menyurat; email: narongdet.wo@gmail.com

 

 

 

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