Visible Light Photoelectrocatalytic Degradation of Rhodamine B Using Ti/TiO2-NiO Photoanode

Abstract

The method of Ti/TiO 2 -NiO photoelectrode prepared by using sol-gel method continued by calcination process was introduced. The prepared TiO 2 -NiO film was observed with XRD and TEM. The anatase-rutile TiO 2 was mainly on the prepared TiO 2 -NiO composite surface electrode. In addition to NiO, the composite also formed NiTiO 3 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/TiO 2 -NiO electrode operated by single photoanode with the Ti/TiO 2 -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.

Development of inorganic composite material based TiO2for environmental application

“…The TiO 2 -PbO solution then was sprayed onto titanium plate and heated at a temperature of 200 °C for 15 minutes. The Ti/TiO 2 -NiO electrode has been synthesized by procedures that have been published previously [29]. 1.145 grams of synthesized xerogel TiO 2 was added in 0.81 grams of NiNO 3 .6H 2 O that has dissolved in 25 mL of distilled water.…”

“…Complete polymerization and loss of solvent lead to the transition from a liquid sol into a solid gel phase. Titanium dioxide has been reported synthesized by sol-gel method using titanium tetrachloride, titanium alkoxide, and titanyl sulfate as well as titanyl chloride precursors [28,29,30]. If TiO 2 is reacted with a strong base it will hydrolyze, this is splitting the polymer chains of TiO 2 (depolymerization) by the presence of OH-groups.…”

“…PEC under halogen lamp irradiation using the Ti/TiO 2 -NiO photoelectrode with a potential voltage of +10.0V do the electrode surface damage rapidly. Furthermore, the continuous systems were done with applied potential bias of 4, 5, and 6 volts [29].…”

COMPARATIVE STUDY OF PHOTOCATALYTIC DEGRADATION OF METHYLENE BLUE AND METHYL ORANGE IN PRESENCE OF SOLAR LIGHT USING GREEN SYNTHESIZED CuO NANOCATALYST

“…Copper oxide particles show effective catalytic removal of organic dyes such as malachite green, when particles were added into it. The use of green method increased so much because of its easy preparation and low manufacturing cost have investigated by Wahyuningsih et al [3]. Moreover, less to toxic starting materials and ease of handling make it more favorable Metal oxides have attracted increasing technological and industrial interest and tremendous application in various fields such as electronics, solar energy conversion, water treatment, catalysis, photonics and biosensors.…”

Polyionic Liquids (PIL) Promoted Ce Doped ZnO for the Photocatalytic Degradation of Rhodamine B (RhB)

“…Therefore, the research of ZnO‐based photocatalyst has been on overcoming aforementioned shortcomings and manufacturing modified ZnO materials for its photocatalytically efficiency. At present, the modification approaches include morphology control, surface precious metal deposition, semiconductor composite and doping . One of remedy was to use rare earth doping to modify the coordination environment of zinc in the crystal lattice.…”