The effects of Ni/Cu co-doped ZnO nanorods: structural and optoelectronic study

Şenol, Sevim Demirözü; Arda, L.

doi:10.1007/s10854-022-08884-5

Cited by 2 publications

(3 citation statements)

References 43 publications

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“…As the atomic radius of Cu and Ni is smaller than that of Zn, they can be used to replace the ZnO lattice to tune its photocatalytic activity [ 25 , 32 ]. Some related research results have shown that Cu and Ni co-doped ZnO can significantly affect UV absorption and luminescence properties, thereby stimulating the photocatalytic activity [ 25 , 33 , 34 , 35 ]. A series of ZnO nanocomposites doped with different amounts of Cu and Ni were prepared using the hydrothermal method in our previous work [ 36 ].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Properties of (Cu, Ni) Co-Doped ZnO Nanoparticle-Reinforced Cu-Ni Nanocomposite Coatings

Tan

Yang

et al. 2023

Materials

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Here, 2% Cu + 2% Ni co-doped ZnO nanoparticles were synthesized using the hydrothermal method and were used as particle reinforcements of Cu-Ni nanocomposite coatings prepared by electroplating technology. The effects of the added (Cu, Ni) co-doped ZnO nanoparticles (2–8 g/L) on the phase structure, surface morphology, thickness, microhardness, corrosion resistance, and photocatalytic properties of the coatings were investigated. The nanocomposite coatings have obvious diffraction peaks on the crystal planes of (111), (200), and (220), showing a wurtzite structure. The surface of the nanocomposite coatings is cauliflower-like, and becomes smoother and denser with the increase in the addition of nanoparticles. The grain size, thickness, microhardness, corrosion resistance, and photocatalytic properties of the nanocomposite coating reach a peak value when the added (Cu, Ni) co-doped ZnO nanoparticles are 6 g/L. At this concentration, the mean crystallite size of the coating reaches a minimum of 15.31 nm, and the deposition efficiency of the coating is the highest. The (Cu, Ni) co-doped ZnO nanoparticle reinforcement makes the microhardness reach up to 658 HV. The addition of nanoparticles significantly improves the corrosion resistance and photocatalytic properties of nanocomposite coatings. The minimum corrosion current density is 2.36 × 10−6 A/cm2, the maximum corrosion potential is −0.301 V, and the highest decolorization rate of Rhodamine B is 28.73% after UV irradiation for 5 h.

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Section: Introductionmentioning

confidence: 99%

Preparation and Properties of (Cu, Ni) Co-Doped ZnO Nanoparticle-Reinforced Cu-Ni Nanocomposite Coatings

Tan

Yang

et al. 2023

Materials

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“…Since the atomic radii of Cu and Ni are smaller than that of Zn, they can be used to replace the ZnO lattice to adjust the photocatalytic activity [21]. The results of several related studies have confirmed that Cu and Ni co-doped ZnO can significantly affect UV absorption and luminescence properties, thus stimulating photocatalytic activity [21][22][23][24]. Then, can Cu and Ni co-doped ZnO with photocatalytic activity be used as a nanoparticle reinforcement to further enhance the seawater and marine microbial corrosion resistance of Cu-Ni alloy coatings?…”

Section: Introductionmentioning

confidence: 99%

“…Cu and Ni co-doped ZnO nanoparticles can be synthesized by methods such as the hydrothermal method [22], electrochemical deposition [25], sol-gel [26], laser ablation [27], microwave-assisted synthesis [28], the spray pyrolysis technique [19], and coprecipitation [23]. A series of ZnO nanoparticles with different Cu and Ni doping levels were prepared by a hydrothermal method [29].…”

Section: Introductionmentioning

confidence: 99%

Effect of Current Density on the Corrosion Resistance and Photocatalytic Properties of Cu-Ni-Zn0.96Ni0.02Cu0.02O Nanocomposite Coatings

et al. 2023

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2 at.% Cu + 2 at.% Ni were co-doped in ZnO nanoparticles by a simple hydrothermal method, and then the modified nanoparticles were compounded into Cu-Ni alloy coatings using an electroplating technique. The effects of the current density (15–45 mA/cm2) on the phase structure, surface morphology, thickness, microhardness, corrosion resistance, and photocatalytic properties of the coatings were investigated. The results show that the Cu-Ni-Zn0.96Ni0.02Cu0.02O nanocomposite coatings had the highest compactness and the best overall performance at a current density of 35 mA/cm2. At this point, the co-deposition rate reached its maximum, resulting in the deposition of more Zn0.96Ni0.02Cu0.02O nanoparticles in the coating. More nanoparticles were dispersed in the coating with a better particle strengthening effect, which resulted in a minimum crystallite size of 15.21 nm and a maximum microhardness of 558 HV. Moreover, the surface structure of the coatings became finer and denser. Therefore, the corrosion resistance was significantly improved with a corrosion current density of 2.21 × 10–3 mA/cm2, and the charge transfer resistance was up to 20.98 kΩ·cm2. The maximum decolorization rate of the rhodamine B solution was 24.08% under ultraviolet light irradiation for 5 h. The improvement in the comprehensive performance was mainly attributed to the greater concentration of Zn0.96Ni0.02Cu0.02O nanoparticles in the coating, which played the role of the particle-reinforced phase and reduced the microstructure defects.

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The effects of Ni/Cu co-doped ZnO nanorods: structural and optoelectronic study

Cited by 2 publications

References 43 publications

Preparation and Properties of (Cu, Ni) Co-Doped ZnO Nanoparticle-Reinforced Cu-Ni Nanocomposite Coatings

Preparation and Properties of (Cu, Ni) Co-Doped ZnO Nanoparticle-Reinforced Cu-Ni Nanocomposite Coatings

Effect of Current Density on the Corrosion Resistance and Photocatalytic Properties of Cu-Ni-Zn0.96Ni0.02Cu0.02O Nanocomposite Coatings

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