Titanium dioxide as photocatalyst on porous nickel: Adsorption and the photocatalytic degradation of sulfosalicylic acid

The commonly used photocatalyst, TiO2 (anatase), has been immobilized on po rous nickel using 3 wt.% polyvinyl alcohol (PVA) as the binder. The results show that sulfosalicylic acid (SSal) can be degraded on the developed cata lytic system. The adsorption characteristics on TiO2-Ni system have been in vestigated. The observance of photocalytic degradation of SSal under pH val ues and initial concentrations can be explained by the adsorption behavior of SSal. The parameters of the Langmuir-Hinshelwood expression have been de termined by different experimental ways and the results are satisfactory. ( C) 1998 Elsevier Science Ltd. AU rights reserved.