WO3–TiO2 nanocomposites for paracetamol degradation under visible light
- 19 Downloads
TiO2 has wide band gap energy and also it has fast recombination rate for electron and hole. Therefore, titanium dioxide excited by ultraviolet light and its photocatalytic activity is small. Enlargement of titanium dioxide activity can be carried out by separation of electron–hole pairs. In this, TiO2–WO3 nanocomposites with various percent of WO3 were synthesis by sol–gel technique in existence of hexadecyltrimethylammonium bromide as template. Physical, photocatalytic and structural properties of titanium dioxide and TiO2–WO3 nanocomposites were measured by many characterizations tools. Performance of titanium dioxide and TiO2–WO3 nanocomposites were measured for paracetamol degradation using visible light. Titanium dioxide band gap can be tailored by control tungsten trioxide weight percent. 3 wt% of tungsten trioxide reduce band gap to 2.63 eV. The optimum weight percent of tungsten trioxide is 3 wt% at which photocatalytic performance for paracetamol degradation is larger than that of TiO2, TiO2–WO3—1 wt%, TiO2–WO3—2 wt% and TiO2–WO3—4 wt% by 33.3, 2.1, 1.6 and 1 times, respectively. TiO2–WO3—3 wt% has photocatalytic stability for five times.
KeywordsWO3–TiO2 Visible light Paracetamol degradation
The authors would like to express their gratitude to King Khalid University, Saudi Arabia for providing administrative and technical support.
- Georgieva J, Valova E, Armyanov S, Philippidis N, Poulios I, Sotiropoulos S (2012) Bi-component semiconductor oxide photoanodes for the photoelectrocatalytic oxidation of organic solutes and vapours: a short review with emphasis to TiO2–WO3 photoanodes. J Hazard Mater 211–212:30–46CrossRefGoogle Scholar
- Rives V (2013a) Preparation of titania nanoparticles and relationships between procedures and properties. In: Nagy I, Balogh A (eds) New developments in metal oxides research, Chapter 1. NOVA Sci. Pub., Inc., New York, pp 1–79Google Scholar