In this paper, Mn–TiO2 nanocomposite films were successfully fabricated by the anodising of pure titanium plates in a non-aqueous electrolyte solution containing manganese ions. For the first time, potassium permanganate was used as the Mn source in anodising process. The morphology, structure and composition of these nanocomposite films were characterised by scanning electron microscopy, X-ray diffraction, energy dispersive X-ray spectroscopy, elemental mapping and UV–Vis absorption spectrum respectively. Characterisation of the as prepared films indicated that potassium permanganate concentration in anodising solution significantly influenced the morphology of the surface, structure and photocatalytic activity of these films. So, to access a specific morphology, a proper concentration of KMnO4 is required. Photocatalytic activity of samples was evaluated by testing the water splitting. The Mn–TiO2–1 nanocomposite exhibited better photocatalytic activity than did the bare TiO2 film and other Mn–TiO2 nanocomposites.
FujishimaA. and HondaK.: ‘Electrochemical photolysis of water at a semiconductor electrode’, Nature, 1972, 238, 37–38. doi: 10.1038/238037a0
2.
XuS., DuA. J., LiuJ., NgJ. and SunD. D.: ‘Highly efficient CuO incorporated TiO2 nanotube photocatalyst for hydrogen production from water’, Int. J. Hydrogen Energy, 2011, 36, 6560–6568. doi: 10.1016/j.ijhydene.2011.02.103
3.
LuoS. L., LiY., YangL. X., LiuC. B., SuF. and ChenY.: ‘Low-temperature, facile fabrication of ultrafine Cu2O networks by anodization on TiO2 nanotube arrays’, Semicond. Sci. Technol., 2012, 27, 105010. doi: 10.1088/0268-1242/27/10/105010
4.
TaoJ. G., LuttrellT. and BatzillM.: ‘A two-dimensional phase of TiO2 with a reduced bandgap’, Nat. Chem., 2011, 3, 296–300. doi: 10.1038/nchem.1006
5.
LinsebiglerA. L., LuG. Q. and YatesJ. T.: ‘Photocatalysis on TiO2 surfaces: principles, mechanisms, and selected results’, Chem. Rev., 1995, 95, 351–358. doi: 10.1021/cr00035a013
6.
SuZ. X., ZhouW. Z., JiangF. L. and HongM. C.: ‘Anodic formation of nanoporous and nanotubular metal oxides’, J. Mater. Chem., 2012, 22, 535–544. doi: 10.1039/C1JM13338A
7.
SuZ. X. and ZhouW. Z.: ‘Pore diameter control in anodic titanium and aluminium oxides’, J. Mater. Chem., 2010, 21, 357–362. doi: 10.1039/C0JM02521F
8.
MomeniM. M. and HosseiniM. G.: ‘Different TiO2 nanotubes for back illuminated dye sensitized solar cell: fabrication, characterization and electrochemical impedance properties of DSSCs’, J. Mater. Sci. Mater. Electron., 2014, 25, 5027–5034. doi: 10.1007/s10854-014-2267-6
9.
SuZ. X. and ZhouW. Z.: ‘Formation, microstructures and crystallization of anodic titanium oxide tubular arrays’, J. Mater. Chem., 2009, 19, 2301–2309. doi: 10.1039/b820504c
10.
ZhangH., LvX. J., LiY. M., WangY. and LiJ. H.: ‘P25-graphene composite as a high performance photocatalyst’, ACS Nano, 2010, 4, 380–386. doi: 10.1021/nn901221k
11.
ChenD., ZhangH., HuS. and LiJ. H.: ‘Preparation and enhanced photoelectrochemical performance of coupled bicomponent ZnO–TiO2 nanocomposites’, J. Phys. Chem. C, 2008, 112C, 117–122. doi: 10.1021/jp077236a
12.
ReisnerE., PowellD. J., CavazzaC., Fontecilla-CampsJ. C. and ArmstrongF. A.: ‘Visible light-driven H2 production by hydrogenases attached to dye-sensitized TiO2 nanoparticles’, J. Am. Chem. Soc., 2009, 131, 18457–18466. doi: 10.1021/ja907923r
13.
MomeniM. M., GhayebY. and DavarzadehM.: ‘Single-step electrochemical anodization for synthesis of hierarchical WO3–TiO2 nanotube arrays on titanium foil as a good photoanode for water splitting with visible light’, J. Electroanal. Chem., 2015, 739, 149–155. doi: 10.1016/j.jelechem.2014.12.030
14.
YangL. X., HeD. M. and CaiQ. Y.: ‘Fabrication and catalytic properties of Co–Ag–Pt nanoparticle-decorated titania nanotube arrays’, J. Phys. Chem. C, 2007, 111C, 8214–8217. doi: 10.1021/jp067207k
15.
MomeniM. M. and GhayebY.: ‘Photoelectrochemical water splitting on chromium-doped titanium dioxide nanotube photoanodes prepared by single-step anodizing’, J. Alloys Compd, 2015, 637, 393–400. doi: 10.1016/j.jallcom.2015.02.137
16.
WangH., BaiY. S., ZhangH., ZhangZ. H., LiJ. H. and GuoL.: ‘CdS quantum dots-sensitized TiO2 nanorod array on transparent conductive glass photoelectrodes’, J. Phys. Chem. C, 2010, 114C, 16451–16455. doi: 10.1021/jp104208z
17.
YangM., KimD., JhaH., LeeK., PaulJ. and SchmukiP.: ‘Nb doping of TiO2 nanotubes for an enhanced efficiency of dye-sensitized solar cells’, Chem. Commun., 2011, 47, 2032–2034. doi: 10.1039/C0CC04993J
18.
LiuS. H., YangL. X., XuS. H., LuoS. L. and CaiQ. Y.: ‘Photocatalytic activities of C–N-doped TiO2 nanotube array/carbon nanorod composite’, Electrochem. Commun., 2009, 11, 1748–1751. doi: 10.1016/j.elecom.2009.07.007
19.
MomeniM. M., GhayebY. and DavarzadehM.: ‘Electrochemical construction of different titania–tungsten trioxide nanotubular composite and their photocatalytic activity for pollutant degradation: a recyclable photocatalysts’, J. Mater. Sci. Mater. Electron., 2015, 26, 1560–1567. doi: 10.1007/s10854-014-2575-x
20.
PraveenP., ViruthagiriG., MugundanS. and ShanmugamN.: ‘Sol–gel synthesis and characterization of pure and manganese doped TiO2 nanoparticles—a new NLO active material’, Spectrochim. Acta A, 2014, 120A, 548–557. doi: 10.1016/j.saa.2013.12.006
21.
SellersM. C. K. and SeebauerE. G.: ‘Room temperature ferromagnetism in Mn-doped TiO2 nanopillar matrices’, Mater. Lett., 2014, 114, 44–47. doi: 10.1016/j.matlet.2013.09.097
22.
TripathiA. K., MathpalM. C., KumarP., SinghM. K., SolerM. A. G. and AgarwalA.: ‘Structural, optical and photoconductivity of Sn and Mn doped TiO2 nanoparticles’, J. Alloys Compd, 2015, 622, 37–47. doi: 10.1016/j.jallcom.2014.09.218
23.
ChoudhuryB. and ChoudhuryA.: ‘Tailoring luminescence properties of TiO2 nanoparticles by Mn doping’, J. Lumin., 2013, 136, 339–346. doi: 10.1016/j.jlumin.2012.12.011
24.
PaulS., ChetriP. and ChoudhuryA.: ‘Effect of manganese doping on the optical property and photocatalytic activity of nanocrystalline titania: Experimental and theoretical investigation’, J. Alloys Compd, 2014, 583, 578–586. doi: 10.1016/j.jallcom.2013.08.209
