J Alloys Compd 2007, 438:258–262. 10.1016/j.jallcom.2006.08.030CrossRef 25. Li Y, Li Y, Zhu M, Yang T, Huang J, Jin H, Hu Y: Structure and magnetic properties of Cr-doped ZnO nanoparticles prepared under GSK2245840 research buy high magnetic field. Solid State Commun 2010, 150:751–754. 10.1016/j.ssc.2010.01.027CrossRef 26. Wesselinowa J, Apostolov A: A possibility to obtain room temperature ferromagnetism by transition metal doping of ZnO nanoparticles. J Appl Phys 2010, 107:053917–053917–053915.CrossRef 27. Yousefi R, Zak AK, Jamali-Sheini F: The effect of group-I elements on the structural and optical properties of ZnO nanoparticles. Ceram Int 2013,

39:1371–1377. 10.1016/j.ceramint.2012.07.076CrossRef 28. Khorsand Zak A, Abd Majid WH, Mahmoudian MR, Darroudi M, Yousefi R: Starch-stabilized synthesis of ZnO nanopowders at low temperature and optical selleck properties study. Adv Powder Technol 2013, 24:618–624. 10.1016/j.apt.2012.11.008CrossRef 29. Farag AAM, Yahia IS: Structural, absorption and optical dispersion characteristics of rhodamine B thin films prepared by drop casting technique. Opt Commun 2010, 283:4310–4317. 10.1016/j.optcom.2010.06.081CrossRef 30. Wang D-W, Zhao S-L, Xu Z, Kong C, Gong W: The improvement of near-ultraviolet

electroluminescence of ZnO nanorods/MEH-PPV heterostructure by using a ZnS buffer layer. Org Electron 2011, 12:92–97. 10.1016/j.orgel.2010.09.018CrossRef 31. Khorsand Zak A, Razali R, Abd Majid WH, Darroudi M: Synthesis and characterization of a narrow size distribution of zinc oxide nanoparticles. Int J Nanomedicine 2011, 6:1399–1403.CrossRef 32. Zak AK, Majid WHA: Effect of solvent on structure and optical properties of PZT nanoparticles prepared by sol–gel method, in infrared region. Ceram Int 2011, 37:753–758. 10.1016/j.ceramint.2010.10.020CrossRef 33. Deng X, Sun J, Yu S, Xi J, Zhu W, Qiu X: Steam reforming of ethanol for hydrogen production

over NiO/ZnO/ZrO 2 catalysts. Int J Hydrog Energy 2008, 33:1008–1013. Competing interests The authors declare that they do not have competing interests. Authors’ contributions AKZ carried out the sample preparation, XRD, and UV section. MD carried out the TEM imaging and Auger spectroscopy selleck antibody inhibitor part. AMH was the project leader and contributed in analyzing the data. All authors read and approved the final manuscript.”
“Background The layered transitional quasi-two-dimensional (Q2D) semiconductor oxides MO3 (M = Mo, W), have recently attracted significant interest because they demonstrate quantum confinement effects at the few-layer limit [1, 2]. Among them, tungsten trioxide (WO3) is an n-type semiconductor in an indirect bandgap of 2.6 to 2.9 eV [3] with excellent electrochromic and gasochromic properties [4]. It has electron Hall mobility of ~12 cm2V-1 s-1 at room temperature and responsive to the blue end of the visible spectrum (λ < 470 nm) [5].