fulltext.study @t Gmail

Visible light photocatalytic activity of TiO2/D-PVA for MO degradation

Paper ID Volume ID Publish Year Pages File Format Full-Text
47960 46486 2009 6 PDF Available
Title
Visible light photocatalytic activity of TiO2/D-PVA for MO degradation
Abstract

A novel visible light (VL) active photocatalyst (TiO2/D-PVA) was prepared in one portion of polyvinyl alcohol (PVA) and Ti(OH)4 by means of hydrothermal method, and the relationship between the prepared conditions and VL photocatalytic activity was investigated. The synthesized photocatalyst was characterized by XRD, UV–vis, XPS, FTIR and EPR. The results show that PVA was dehydrated to produce conjugated unsaturated D-PVA. The VL photocatalytic activity was attributed to the interaction between D-PVA and TiO2. The TiO2/D-PVA, synthesized with the 1:10 feed ratio of PVA to TiO2 at 180 °C, exhibited a significant VL activity for the Methyl orange (MO) degradation. The degradation rate fit the characteristic of apparent first-order kinetics. The mechanism of MO degradation was also proposed.

Keywords
TiO2/D-PVA; Visible light photocatalysis; Hydrothermal method; Methyl orange; Degradation kinetics
First Page Preview
Visible light photocatalytic activity of TiO2/D-PVA for MO degradation
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 90, Issues 1–2, 25 July 2009, Pages 249–254
Authors
, , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis