Potential dependent growth of Cu(OH)2 nanostructures on Cu and their thermal conversion to mixed-valent copper oxides p-type photoelectrode

Better Charge Separation in CuO Nanowire Array Photocathodes: Micro-/Nanostructure Regulation for Photoelectrochemical Reaction

“…12,41 Recent works observed the evidence that the potentiodynamic anodization might provide new possibilities, that notably different rodlike structures (though not uniform) can be obtained in the anodized product. 45,46 Hence, we developed a unique new protocol using linear sweep voltammetry (LSV) with the possibility of exquisite morphological controls. Figure 1 shows the typical anodization process with the product from different stages.…”

“…Either CuO or Cu 2 O NWAs can be obtained readily by converting Cu­(OH) 2 NWAs with the nanostructures well maintained. , Therefore, structural engineering of Cu­(OH) 2 NWAs is supposed to be a feasible way for the development of copper oxide nanostructures. However, previous widely used routes for Cu­(OH) 2 NWAs using constant-current anodization or chemical baths of Cu substrate were in lack of such a fine control. , Recent works observed the evidence that the potentiodynamic anodization might provide new possibilities, that notably different rodlike structures (though not uniform) can be obtained in the anodized product. , Hence, we developed a unique new protocol using linear sweep voltammetry (LSV) with the possibility of exquisite morphological controls. Figure shows the typical anodization process with the product from different stages.…”

Influence of UV light irradiation on the corrosion behavior of electrodeposited Ni and Cu nanocrystalline foils

“…As a result, the corrosion resistance of Cu foil in 3.5% NaCl solution is improved after being illuminated by the UV light 13 . Meanwhile, studies showed that the oxide scale on Cu alloys containing appropriate amounts of Cu(OH) 2 exhibited better anti-corrosion property 52,53 in neutral environment. Thus, the increased amount of Cu(OH) 2 in the oxide scale caused by the UV illumination also benefits the corrosion resistance of the Cu foil.…”

Visible light-active binary metal ion containing functional triazine metallopolymers as a stable p-type photo-electrocatalyst in protic electrolytes

“…33,34 In our previous studies we have reported copper ion-containing triazine trithiolate metallopolymers and triazine-based metal-free polymers as novel photocathodes. [36][37][38] In this present study, we have prepared Cd 2+ and copper ion-containing triazine thiolate metallopolymers directly chemisorbed onto a copper substrate. The effect of photoactivity upon the inclusion of Cd 2+ as a secondary metal ion in the triazine trithiolate polymer, its stability in the protic electrolyte, and the hydrogen evolution activities were investigated.…”

“…To compare the stability of p-type metallopolymeric and p-type copper oxide photocathodes in protic electrolyte, copper oxide thin films were deposited on FTO and copper substrates according to the previously reported procedures and discussed elsewhere. 36,37 A three-electrode cell setup with a freshly prepared Cu foil as a working electrode, Pt as a counter, and Ag/AgCl in saturated KCl as the reference electrode was used in the electrochemical preparation. All the thin film-coated electrodes were washed with deionized water and air-dried for further experiments.…”