Synthesis, characterization and photocatalytic properties of tungsten-doped hydrothermal TiO2
Source abstract
Abstract
Crystalline anatase phase TiO2 with photocatalytic properties was obtained through a sol–gel low-temperature hydrothermal process. TiO2 samples doped with tungsten oxide were also obtained by using this synthetic approach. The photocatalytic oxidation of methylene blue in water was monitored to study the influence of the tungsten doping degree on the photocatalytic degradation performance of TiO2. The degradation rate constant was further increased by adjusting the tungsten doping degree of hydrothermal TiO2. Also, a much faster photodegradation of methylene blue was achieved using tungsten doped samples baked at 450°C. The results were compared with those obtained with Degussa P25 used as photocatalyst. The structure and optical properties of tungsten-doped TiO2 were studied by SEM, X-ray diffraction, UV–vis and DRIFT spectroscopy techniques.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: TiO2 Photocatalysis and Solar Cells · Advanced Photocatalysis Techniques · Copper-based nanomaterials and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (33)
Show source-provided references
1. Tahiri H, Serpone N, Le van Mao R (1996) Application of concept of relative photonic efficiencies and surface characterization of a new titania photocatalyst designed for environmental remediation. J Photochem Photobiol A Chem 96:199–20310.1016/1010-6030(95)04195-8 ↗
2. Thomson R (1995) Industrial Inorganic Chemicals: Production and Uses, Royal Society of Chemistry. ISBN 0-85404-514-7
3. Hoffmann MR, Martin ST, Choi W, Bahneman DW (1995) Environmental applications of semiconductor photocatalysis. Chem Rev 95:69–9510.1021/cr00033a004 ↗
4. Grätzel M (2001) Photoelectrochemical cells. Nature 414:338–34410.1038/35104607 ↗
5. Grätzel M (2006) The advent of mesoscopic injection solar cells. Prog Photovolt Res Appl 14:429–44210.1002/pip.712 ↗
6. Fujishima A, Rao TN, Tryk DA (2000) Titanium dioxide photocatalysis. J Photochem Photobiol C Rev 1:1–2110.1016/S1389-5567(00)00002-2 ↗
7. Yang L, Yu LE, Ray MB (2008) Degradation of paracetamol in aqueous solutions by TiO2. Photocatalysis. Water Res 42:3480–348810.1016/j.watres.2008.04.023 ↗
8. Calza P, Sakkas VA, Medana C, Baiocchi C, Dimou A, Pelizzeti E, Albanis T (2006) Photocatalytic degradation study of diclofenac over aqueous TiO2 suspensions. Appl Catal B Environ 67:197–20510.1016/j.apcatb.2006.04.021 ↗
9. Doll TE, Frimmel FH (2004) Kinetic study of photocatalytic degradation of carbamazepine, clofibric acid, iomeprol and iopromide assisted by different TiO2 materials—determination of intermediates and reaction pathways. Water Res 38:955–96410.1016/j.watres.2003.11.009 ↗
10. Hurum DC, Agrios AG, Gray KA, Rajh T, Thurnauer MC (2003) Explaining the enhanced photocatalytic activity of Degussa P25 mixed-phase TiO2 using EPR. J Phys Chem B 107:4545–454910.1021/jp0273934 ↗
11. Mills A, Le Hunt S (1997) An overview of semiconductor photocatalysis. J Photochem Photobiol A Chem 108:1–3510.1016/S1010-6030(97)00118-4 ↗
12. Linsebigler AL, Lu G, Yates JT (1995) Photocatalysis on TiO2 surfaces: principles, mechanisms, and selected results. Chem Rev 95:735–75810.1021/cr00035a013 ↗
13. Gole JL, Stout JD, Burda C, Lou Y, Chen X (2004) Highly efficient formation of visible light tunable TiO2-xNx photocatalysts and their transformation at the nanoscale. J Phys Chem B 108:1230–124010.1021/jp030843n ↗
14. Nagaveni K, Hegde MS, Ravishankar N, Subbana GN, Madras G (2004) Synthesis and structure of nanocrystalline TiO2 with lower band gap showing high photocatalytic activity. Langmuir 20:2900–290710.1021/la035777v ↗
15. Thompson TL, Yates JT (2006) Surface science studies of the photoactivation of TiO2 new photochemical processes. Chem Rev 106:4428–445310.1021/cr050172k ↗
16. Marci G, Palmisano L, Sclafani, Venezia AM, Campostrini R, Carturan G, Martin C, Rives V, Solana G (1996) Influence of tungsten oxide on structural and surface properties of sol–gel prepared TiO2 employed for 4-nitrophenol photodegradation. J Chem Soc Faraday Trans 92:819–82910.1039/FT9969200819 ↗
17. Kown YT, Song KY, Lee WI, Choi GJ, Do YR (2000) Photocatalytic behavior of WO3-loaded TiO2 in an oxidation reaction. J Catal 191:192–19910.1006/jcat.1999.2776 ↗
18. Keller V, Bernhardt P, Garin F (2003) Photocatalytic oxidation of butyl acetate in vapor phase on TiO2, Pt/TiO2 and WO3/TiO2 catalysts. J Catal 215:129–13810.1016/S0021-9517(03)00002-2 ↗
19. Rampaul A, Parkin IP, O′Neill SA, DeSouza J, Mills A, Elliot N (2003) Titania and tungsten doped titania thin films on glass; active photocatalysts. Polyhedron 22:35–4410.1016/S0277-5387(02)01333-5 ↗
20. Hou LR, Yuan CZ, Peng Y (2007) Synthesis and photocatalytic property of SnO2/TiO2 nanotubes composites. J Hazard Mater B 139:310–31510.1016/j.jhazmat.2006.06.035 ↗
21. Kamat PV, Vinodgopal K (1998) Organic and Inorganic Photochemistry. In: Ramamurthy V, Schanze KS (eds) Environmental Photochemistry with semiconductor nanoparticles. Marcel Dekker, New York
22. Consuelo N, García Einschlag FS, Candal RJ, Jobbágy M (2008) Tungsten-doped TiO2 vs. pure TiO2 photocatalysts: effects on photobleaching kinetics and mechanism. J Phys Chem C 112:1094–111010.1021/jp0769781 ↗
23. Yang Y, Wang H, Li X, Wang C (2009) Electrospun mesoporous W6+-doped TiO2 thin films for efficient visible-light photocatalysis. Mater Lett 63:331–33310.1016/j.matlet.2008.10.037 ↗
24. Suryanarayana C, Grant Norton M (1998) in X-Ray Diffraction, A Practical Approach, Plenum Press, New York and London, Chap. 610.1007/978-1-4899-0148-4 ↗
25. Topalian Z, Smulko JM, Niklasson GA, Granqvist CG (2007) Resistance noise in TiO2-based thin film gas sensors under ultraviolet irradiation. J Phys Conf Ser 76: doi: 10.108871742-6596/76/1/01205610.1088/1742-6596/76/1/012056 ↗
26. Yang HM, Shi RR, Zhang K, Hu YH, Tang AD, Li XW (2005) Synthesis of WO3/TiO2 nanocomposites via sol–gel method. Alloy Compd 398:200–20210.1016/j.jallcom.2005.02.002 ↗
27. Joshi GP, Saxena NS, Mangal R, Mishra A, Sharma TP (2003) Band gap determination of Ni–Zn ferrites. Bull Mat Sci 26:387–38910.1007/BF02711181 ↗
28. Sirohi S, Sharma TP (1999) Bandgaps of cadmium telluride sintered film. Opt Mater 13:267–26910.1016/S0925-3467(98)00084-6 ↗
29. Iyer SS, Xie H (1993) Light emission from silicon. Science 260:40–4610.1126/science.260.5104.40 ↗
30. Reddy KM, Manorama SV, Reddy AR (2002) Bandgap studies on anatase titanium dioxide nanoparticles. Mater Chem Phys 78:239–24510.1016/S0254-0584(02)00343-7 ↗
31. Al-Sayyed G, D′Olivera JC, Pichat P (1991) Semiconductor-sensitized photodegradation of 4-chlorophenol in water. J Photochem Photobiol A Chem 58:99–11310.1016/1010-6030(91)87101-Z ↗
32. Lu MC, Roam GD, Chen JN, Huang CP (1993) Factors affecting the photocatalytic degradation of dichlorvos over titanium dioxide supported on glass. J Photochem Photobiol A Chem 76:103–11010.1016/1010-6030(93)80180-H ↗
33. Pan JH, Lee WI (2006) Preparation of highly ordered cubic mesoporous WO3/TiO2 films and their photocatalytic properties. Chem Mater 18(3):847–85310.1021/cm0522782 ↗