SYNTHESIS OF Fe2O3-MONTMORILLONITE AND ITS APPLICATION AS A PHOTOCATALYST FOR DEGRADATION OF CONGO RED DYE

https://doi.org/10.22146/ijc.21837

Karna Wijaya(1*), Iqmal Tahir(2), Nanik Haryanti(3)

(1) Chemistry Department, Faculty of Mathematics and Natural Sciences Gadjah Mada University, Yogyakarta
(2) Chemistry Department, Faculty of Mathematics and Natural Sciences Gadjah Mada University, Yogyakarta
(3) Chemistry Department, Faculty of Mathematics and Natural Sciences Gadjah Mada University, Yogyakarta
(*) Corresponding Author

Abstract


The preparation of Fe2O3-montmorillonite and it's application as a catalyst for congo red dye photodegradation has been carried out. Fe2O3-montmorillonite was prepared by mixing the iron complexes pillaring agent and montmorillonite. The product was calcined at 250 oC for 5 hours. Montmorillonite and calcined product was analyzed by X-ray diffractometry (X-RD), infrared spectrophotometry (FTIR), gas  sorption analyser, X-ray fluorescense (X-RF) and UV/Vis diffuse reflectance spektrophotometry (UV-DRS). Fe2O3-montmorilonite then was used as a catalyst on congo red dye photodegrdation by UV-illuminating a mixture of 50 mg Fe2O3-montmorillonite and 25 mL congo red 10­-4M at 365 nm at various illuminating times. Adsorption of congo red on Fe2O3-montmorillonite and montmorillonite was also performed as a comparison.

Result of X-RD analysis showed that the 001 reflection of  Fe2O3-montmorillonite was not  detected that probably indicating the formation of house of card stucture and this result was supported also by the analysis result of distribution of pores and SEM photography result. Results of the XRF analysis showed that iron content increased  from 5.21 % (w/w) in montmorillonite to 25.12 % (w/w) in Fe2O3-montmorillonite. UV- DRS analysis showed the increament of band gap energy from 3.69 eV in the iron oxide bulk to 3.8 eV in Fe2O3-montmorillonite. Specific surface area of the montmorillonite also increased significantly from 69,71 m2/g to 126,49 m2/g and total pores volume increased from 50.70x10-3 mL/Å/g  to 107.89x10-3 mL/Å/g, respectively. Photodegradation of congo red using Fe2O3-montmorillonite caused the decreament of congo red concentration up to 90.22 %  on UV illumination for 60 minutes. Adsorption of congo red on Fe2O3-montmorillonite reached 84.4% and on  montmorillonite was 75.15 %.


Keywords


photodegradation; congo red; Fe2O3-montmorillonite; UV light

Full Text:

Full Text PDF


References

[1] Hoffmann, M.R., Martin. S.T., Choi, W. and Bahnemann, D.W., 1995, Chem. Rev., 95, 69-96.

[2] Cool, P. and Vansant. E.F., 1996, Pillared Clays: Preparation, Characterization and Applications, University of Antwerp, Wilrijk.

[3] Ding, Z., Kloprogge, J.T., Frost, R.L., Lu, G.Q. and Zhu, H.Y., 2000, J. Porous Mater., 8, 273-293.

[4] Dewi, P.P., 1999, Preperasi, Karakterisasi, dan Uji Fotoaktivitas Oksida Besi Sebagai Pemilar Antarlapis dalam Bentonit, Skripsi, FMIPA UGM, Yogyakarta.

[5] Houas, A., Lachheb, H., Ksibi, M., Elaloui, E., Guillard, C. and Herrmann, JM., 2001, App. Catal. B., 31, 145-147.

[6] Lachheb, H., Puzenat, E., Houas, A. Ksii, M., Elaloui, E., Guillard, C. and Hermann, J.M., 2002, Appl. Catal. B., 39, 75-90.

[7] Jenkins, R., 1999, X-Ray Fluorescence Spectrometry, Second Edition, John Wiley & Sons, Inc., New York.

[8] Linsebigler, A.L., Lu, G. and Yates Jr. J.T., 1995, Chem. Rev., 95, 735-758.

[9] Somorjai, G.A., 1972, Principles of Surface Chemistry, Prentice-Hall, Inc., Englewood Cliffs, New Jersey.

[10] Madejová, J., 2003, FTIR Techniques in Clay Mineral Studies, Vibrational Spectroscopy, 31, 1-10.

[11] Rightor, E.G., Pinnavaia, T.J. and Tzou, M.S., 1991, J. Catal., 138, 29-40.

[12] Sumerta, I.K., Wijaya, K. dan Tahir I., 2003, Jurnal Kimia I (1), 39-47.

[13] Lintang, H.O., 2001, Preparasi Oksida Besi di dalam Struktur Zeolit Faujasit Hasil Sintesis Abu Layang Untuk Fotokatalitik Oksidasi Fenol, Skripsi, FMIPA UGM, Yogyakarta.

[14] Wahyuni, E.T., 1992, Penggunaan Metode Difraksi Sinar-X untuk Deteksi Pertumbuhan Kristal Mineral Lempung oleh Pengaruh Pemanasan dan Aktivasi, Laporan Penelitian, FMIPA UGM, Yogyakarta.

[15] Wijaya, K., 1995, Interkalasi Senyawa-senyawa Fotokromik Kedalam Antarlapis Smektit dan Pemanfaatannya untuk Bahan Penyimpan Data Optik, Penelitian P4M UGM, Yogyakarta.

[16] Tan, K.H., 1982, Dasar-dasar Kimia Tanah, terjemahan oleh Goenadi, D.H., Edisi I, Gadjah Mada University Press, Yogyakarta.

[17] Van Olphen, H., 1997, An Introduction to Clay Colloid Chemistry for Clay Technologists, Geologists, and Soil Scientists, Second Edition, A Willey Interscience Publition, Ontario.



DOI: https://doi.org/10.22146/ijc.21837

Article Metrics

Abstract views : 2227 | views : 4298


Copyright (c) 2010 Indonesian Journal of Chemistry

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

 

Indonesian Journal of Chemistry (ISSN 1411-9420 /e-ISSN 2460-1578) - Chemistry Department, Universitas Gadjah Mada, Indonesia.

Web Analytics View The Statistics of Indones. J. Chem.