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Jurnal Kimia Unand ISSN No. 2303-3401, Volume 2 Nomor 3, Agustus 2013
123
SINTESIS, KARAKTERISASI DAN UJI AKTIFITAS FOTOKATALITIK NANOKOMPOSIT TiO
2
-ZnFe
2
O
4 Dian Degusty, Rahmayeni, Syukri Arief
Laboratorium Kimia Material Jurusan Kimia FMIPA, Universitas Andalas. e-mail: rahmayenni83yahoo.com
Jurusan Kimia FMIPA Unand, Kampus Limau Manis, 25163
Abstract
TiO
2
-ZnFe
2
O
4
nanocomposite photocatalyst
has been
successfully synthesized
by coprecipitationhydrolysis method. The nanocomposites were characterized by Scanning Electron
Microscopy-Electron Dispersive X-Ray SEM-EDX, X-Ray Diffraction XRD, and Vibrating Sample Magnetometer VSM. SEM images show that the TiO
2
-ZnFe
2
O
4
nanocomposite 1:0,1 has homogenous surface and particle size. XRD pattern show that the highest intensity of anatase was
TiO
2
-ZnFe
2
O
4
nanocomposite 1:0,1 with highest calcination temperature, 600
o
C at 2θ = 25,26
o
. The present of ZnFe
2
O
4
prevent transformation of anatase to rutil. ZnFe
2
O
4
showed the peaks at 2θ = 53,9
o
and 62,8
o
. Magnetic properties analysis indicated that TiO
2
-ZnFe
2
O
4
nanocomposite has soft magnetic property than ZnFe
2
O
4.
Photocatalytic activity of TiO
2
-ZnFe
2
O
4
nanocomposites in degradation of Rhodamine B under solar light irradiation showed higher activity than ZnFe
2
O
4
and TiO
2
synthesized. Keyword
: nanocomposite, TiO
2
-ZnFe
2
O
4
, degradation, Rhodamine B
1. Pendahuluan
