Improved photocatalytic activity and mechanism of Cu2O/N–TiO2 prepared by a two-step method

Synthesis of Cu2O/graphene/rutile TiO2 nanorod ternary composites with enhanced photocatalytic activity

“…In addition, both the conduction and the valence bands of Cu 2 O nanoparticles lie above those of TiO 2 . When TiO 2 is hybridized with Cu 2 O, the photogenerated electrons can transfer from the conduction band of Cu 2 O to that of TiO 2 , thereby leading to the visible light response of TiO 2 [57].…”

“…Wang et al [37] prepared TiO 2 loaded CuS and NiS by hydrothermal approach and proved that CuS and NiS can act as effective dual co-catalysts to enhance the photocatalytic H 2 production activity of TiO 2 . Luo et al [40] properties such as exceptional light-scattering efficiency, high refractive index, opacity, and chemical inertness [43,44]. Herein, we developed a feasible fabrication approach for a ternary nanocomposite of Cu 2 O, graphene and rutile TiO 2 naorods.…”

“…Recently, there has been growing interests about the multiple modification methods, such as co-dopings [34,35], co-couplings [36][37][38] or doping-coupling [39] hybrid modification of TiO 2 . Aragaw et al [34] confirmed the highest saturated photocurrent density of Sn and C codoped TiO 2 nanowires and 60%, 94%, and 100% efficiency improvements of the maximum solar energy conversion efficiency compared to undoped, Sn doped, and C doped TiO 2 nanowires.…”

The improved resistive switching of HfO2:Cu film with multilevel storage

“…The spectrum of Cu 2p is also characterized in Fig. 1c and shows a double peaks, the Cu 2p 3/2 (933.33 eV) and 2p 1/2 (953.13 eV), which correspond to CuO x [17,18]. The doping concentration of Cu was estimated to be about 6 % by XPS analysis.…”

“…''Two peaks at 530.4 and 532.1 eV can be deconvoluted from the O 1s spectra of HfO 2 film, which are attributed to Hf-O and chemisorbed oxygen ions, respectively. For HfO 2 :Cu film, the O 1s spectra can be fitted as three peaks and the peak located at 529.26 eV corresponds to Cu-O [17].'' The spectrum of Cu 2p is also characterized in Fig.…”