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Synthesis, characterization and photocatalytic activity of engelhard titanosilicates (Ets-4)

Mamat, Che Rozid and Faizol, Hasmalina (2015) Synthesis, characterization and photocatalytic activity of engelhard titanosilicates (Ets-4). In: 5th International Conference and Workshops on Basic and Applied Sciences, 16-17 Oct, 2015, Indonesia.

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Official URL: http://www.gbv.de/dms/tib-ub-hannover/864019920.pd...

Abstract

Engelhard Titanosilicate-4 (ETS-4) is a microporous zeo-type. material which contains framework of semiconductive monoatoiruc -O-Ti^-O- chains that useful for photocatalysis. In this study, ETS- 4 materials were synthesized by the hydrothermal method using two different initial molar compositions. The hydrothermal synthesis reactions were performed at 200"C for 6, 12, and 24 h in a Teflonlined autoclave. The prepared ETS-4 materials were characterized using several techniques such as X-ray diffraction (XRD), Fourier Transform Infrared (FTIR) spectroscopy, and Bruneuer. Emmet Teller (BET) surface analysis. The parameters of Si:Ti ratio as wet! as synthesis time and reactions on photocatalytic activity of ETS-4 were investigated using photodegradation reaction of Rhodamine B dye under Ultraviolet (UV) light irradiation The change in concentration with varied irradiation time was monitored by determining its absorbance at 554 nm using UV-Visible spectrophotometer. The absorption spectra results show ETS-4(B) materials which were produced at lower Si:Ti ratio exhibited better photocatalytic activity than ETS-4(A) which is due to higher surface area and higher content of Ti-OH groups.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:titanosiiicate, hydrothermal method
Subjects:Q Science > QD Chemistry
Divisions:Science
ID Code:61732
Deposited By: Widya Wahid
Deposited On:25 Apr 2017 07:39
Last Modified:25 Apr 2017 07:39

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