TITLE:
Visible Light Photoelectrocatalytic Degradation of Rhodamine B Using Ti/TiO2-NiO Photoanode
AUTHORS:
Sayekti Wahyuningsih, Candra Purnawan, Teguh Endah Saraswati, Edi Pramono, Ari Handono Ramelan, Setyo Pramono, Ari Wisnugroho
KEYWORDS:
Ti/TiO2-NiO Photoelectrode, Visible Light, Photoelectrocatalysis Degradation, Rhodamine B
JOURNAL NAME:
Journal of Environmental Protection,
Vol.5 No.17,
December
15,
2014
ABSTRACT: The
method of Ti/TiO2-NiO photoelectrode prepared by using sol-gel
method continued by calcination process was introduced. The prepared TiO2-NiO
film was observed with XRD and TEM. The anatase-rutile TiO2 was mainly on the prepared TiO2-NiO
composite surface electrode. In addition to NiO, the composite also formed
NiTiO3 that increased with increasing calcination temperature. Photoelectrocatalytic degradation of
Rhodamine B (RB) using this electrode was investigated, and anodic potential
and pH were optimized. RB degradation was investigated under different
conditions, and it showed that photoelectrocatalytic degradation could achieve
efficient and complete mineralization of organic pollutant. Through comparison
of the photoelectrocatalytic oxidation using the Ti/TiO2-NiO
electrode operated by single photoanode with the Ti/TiO2-NiO electrode
operated by several
photoanode, it was found that the photoelectrocatalytic efficiency of that by
series photoanodes was higher. Additionally, photoelectrocatalytic system was
performed at the several different photoelectrodes, which verified the higher
photocatalytic activity compared with the single photoelectrode.