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Title : The Effect of Silica on Photocatalytic Degradation of Methylene Blue Using Silica-Coated NiZn Ferrite Nanoparticles
Author :

NURUL IMANI I (1) AFIFAH THAHIRAH M (2) ASTRIE NOFRIANTI (3) Dr.Eng. Edi Suharyadi, S.Si., M.Eng. (4) Takeshi Kato (5)

Date : 0 2020
Keyword : nickel zinc ferrite, co-precipitation, stöber, silica, coated, photodegradation. nickel zinc ferrite, co-precipitation, stöber, silica, coated, photodegradation.
Abstract : Nickle zinc ferrite (NiZnFe2O4) magnetic nanoparticle (MNPs) has been successfully synthesized using co-precipitation method. NiZnFe2O4 was coated SiO2 (NiZnFe2O4/SiO2) using Stöber method with various concentrations of (5%, 10%, 15%, 20%, 30%, and 50%). MNPs sample has a spinel ferrite phase confirmed by X-ray diffraction (XRD) measurements. The results of the functional group analysis performed using Fourier transform infrared (FTIR) showed an M-O tetrahedral vibrational bond found a wavelength of 347 cm-1 . After coated silica, Si-O-Si vibrational bonds appear at wavelengths of 1033.85 cm1 . Magnetic properties were measured using vibrating Sample Magnetometer (VSM), the result shows that has maximum saturation magnetization of NiZnFe2O4 22.5 emu.gram-1 and decreased to 16.9 emu.gram-1 after coating. In Figure 1 show that the photodegradation activity of MNPs was carried out with a variation of irradiation time. Result of the photodegradation activity of methylene blue shows that NiZnFe2O4/SiO2 are higher than NiZnFe2O4. Sample of NiZnFe2O4/SiO2 has the highest photodegradation rate up to 96%. The existence of SiO2 layer on the surface of bare MNPs increases the surface reactivity of samples.
Group of Knowledge :
Level : Internasional
Status :
Published
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1 KEM_855_268.pdf
Document Type : [PAK] Full Dokumen
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2 Form L1_Edi-SUHARYADI_Proceeding2.pdf
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3 isti icmia_sertifikat.pdf
Document Type : [PAK] Sertifikat Seminar
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