Cu doped NiO thin film photocathodes for enhanced PEC performance

Flower ball cathode assembled from Cu doped Co3S4/Ni3S2 ultrathin nanosheets in a photocatalytic fuel cell for efficient photoelectrochemical rifampicin purification and simultaneous electricity generation based on a CuO QDs/TiO2/WO3 photoanode

“…Since the ionic radius of Cu It is worth noting that a negative shi in peak positions is observed for Cu/Co 3 S 4 /Ni 3 S 2 , but no obvious diffraction peaks of Cu, which further proved that Cu ions are successfully doped into the lattice. [27][28][29] The corresponding cell parameters are shown in Table S1. † Moreover, the diffraction peak intensity of the doped samples become stronger as the Cu can change the morphology of samples to promote nucleation, making the samples have high crystallinity.…”

Enhancing the solar hydrogen generation performance of nickel-oxide nanostructured thin films doped with molybdenum

“…Previously, reported literature utilized NiO as a photoactive electrode in the hydrogen production process via PEC-water splitting mechanism. Pooja Sahoo et al [14] recorded that a 3% Cu doped NiO sample prepared via sol-gel spin coating method obtained a photocurrent density of −6.97 mA cm −2 at −1.5 V versus Ag/AgCl in NaOH. Peidong Wu et al [24] reported that NiO fabricated by hydrothermal method recorded −5.93 μA cm -2 and this value enhanced to −23.39 μA cm -2 for NiO/WO 3 sample.…”

“…However, the study on the use of NiO as a photoactive electrode in the water-splitting process is still limited. The high recombination rate for the photogenerated electron-hole pairs is considered a major obstacle and a significant limitation for NiO to be used as a photocathode in the PEC-water splitting application [14]. The issue of the high recombination rate can be avoided or reduced by inserting charge traps into the semiconductor via the doping process [6].…”

“…These characteristics include their chemical stability, affordability, ease of synthesis, efficient charge separation properties, and high collection efficiency when employed as photoactive electrodes [6]. A lot of attention has recently focused on the p-type metal oxide semiconductors because of their appropriate band alignment which enhances the photogenerated electrons transport to the electrode/electrolyte interface, making them more suitable as photocathodes for the PEC-water splitting process [14,15].…”

Nickel Oxide Films Deposited by Sol-Gel Method: Effect of Annealing Temperature on Structural, Optical, and Electrical Properties

“…Usually, it is difficult to achieve stoichiometric NiO films and the stoichiometric NiO possesses a high electrical resistivity of 10 13 Ω·cm [ 11 ]. Its electrical properties depend on the Ni and O lattice defects [ 2 ].…”