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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 NADPH-cytochrome-c2 reductase 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].

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