CATALYST TABLET OF Cu-TiO2/GRAPHITE FOR PHOTO-AND ELECTRO-ASSISTED DEGRADATION OF REMAZOL YELLOW FG

Rahmawati , Fitria and Apriyani, Rochmi I. and Rahardjo, Sentot B. (2012) CATALYST TABLET OF Cu-TiO2/GRAPHITE FOR PHOTO-AND ELECTRO-ASSISTED DEGRADATION OF REMAZOL YELLOW FG. ALCHEMY Jurnal Penelitian Kimia. ISSN 1412-4092

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    Abstract

    Ti tanium dioxide (TiO2) fi lm was supported on graphi te (G) by means of chemical bath deposi tion (CBD) from TiCl4 precursor. Meanwhi le surfactant cetyl trimethyl ammonium bromide (CTAB) was added as l inking and assembl ing agent between ti tanium network and graphi te substrate. Cu was deposi ted electrochemical ly from 0.4 M of CuSO4 solution at 0.03 A of electric current. The tablets of TiO2/G and Cu-TiO2/G were used as catalyst for photocatalytic degradation (PC), electrocatalytic degradation (ED) and photoelectrocatalytic (PEC) degradation of Remazol Yel low FG. In degradation system which used TiO2/G tablet, the highest rate constant, k, was achieved by PEC method, k was 2.8´10-3 min-1, as wel l as in the system which used Cu-TiO2/G tablet. However, this research founded that di rect oxidation by external electric field contribute more to degradation process than photocatalytic mechanism, proved by high rate constant of ED, k was 2.6´10-3 min-1. Meanwhi le, rate constant of photocatalytic degradation was 5´10-4 min-1. This research also founded that TiO2 fi lm highly contribute in degradation process due to the fact that rate constant of electrodegradation by using blank graphi te is low, k was 5´10-4 min-1. Meanwhi le, deposi tion of Cu onto TiO2 did not enhance degradation rate of remazol yel low by PEC method, however i t enhanced the rate constant of ED to 2.7´10-3 min-1. The FTIR analysis to the completedly degraded remazol yel low FG solution shows disappearance of N=N stretching at 1559 cm-1and uas CH2 at 2919 cm-1. This indicates that molecular structure of remazol yel low has been degraded succesful ly then convert this dye solution into clear solution.

    Item Type: Article
    Subjects: Q Science > Q Science (General)
    Q Science > QD Chemistry
    Divisions: Lembaga Penelitian dan Pengabdian Kepada Masyarakat - LPPM
    Depositing User: Anis Fagustina
    Date Deposited: 03 May 2014 21:41
    Last Modified: 03 May 2014 21:41
    URI: https://eprints.uns.ac.id/id/eprint/14828

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