TY - JOUR
T1 - Highly-dispersed nickel nanoparticles decorated titanium dioxide nanotube array for enhanced solar light absorption
AU - Chen, Jian
AU - Zhou, Yingke
AU - Li, Ruizhi
AU - Wang, Xi
AU - Chen, George Z.
PY - 2019/1/15
Y1 - 2019/1/15
N2 - Honeycomb titanium dioxide nanotube array (TiO2-NTA) decorated by highly-dispersed nickel nanoparticles (Ni-NPs) has been grown under control on Ti foil by anodization and subsequent electrodeposition. The pore diameter and length of TiO2-NTA, and the size and quantity of Ni-NPs can be controlled via modulating the variables of the electrochemical processes. It has been found that the pretreatment of TiO2-NTA in the Cu(NO3)2 solution and further annealing at 450 °C in air could greatly improve the dispersion of the electrodeposited Ni-NPs. Absorption of the light in the solar spectrum from 300 to 2500 nm by the Ni-NPs@TiO2-NTA is as high as 96.83%, thanks to the co-effect of the light-trapping of TiO2-NTA and the plasmonic resonance of Ni-NPs. In the water heating experiment performed under an illuminating solar power density of ∼1 kW m−2 (AM 1.5), the ultimate temperature over 66 °C and an overall efficiency of 78.9% within 30 min were obtained, promising for applications in photothermal conversion and solar energy harvest.
AB - Honeycomb titanium dioxide nanotube array (TiO2-NTA) decorated by highly-dispersed nickel nanoparticles (Ni-NPs) has been grown under control on Ti foil by anodization and subsequent electrodeposition. The pore diameter and length of TiO2-NTA, and the size and quantity of Ni-NPs can be controlled via modulating the variables of the electrochemical processes. It has been found that the pretreatment of TiO2-NTA in the Cu(NO3)2 solution and further annealing at 450 °C in air could greatly improve the dispersion of the electrodeposited Ni-NPs. Absorption of the light in the solar spectrum from 300 to 2500 nm by the Ni-NPs@TiO2-NTA is as high as 96.83%, thanks to the co-effect of the light-trapping of TiO2-NTA and the plasmonic resonance of Ni-NPs. In the water heating experiment performed under an illuminating solar power density of ∼1 kW m−2 (AM 1.5), the ultimate temperature over 66 °C and an overall efficiency of 78.9% within 30 min were obtained, promising for applications in photothermal conversion and solar energy harvest.
KW - Light absorption
KW - Nickel nanoparticles
KW - Photothermal conversion
KW - Plasmonic resonance
KW - Titanium dioxide nanotube array
KW - Light absorption
KW - Nickel nanoparticles
KW - Photothermal conversion
KW - Plasmonic resonance
KW - Titanium dioxide nanotube array
U2 - 10.1016/j.apsusc.2018.09.091
DO - 10.1016/j.apsusc.2018.09.091
M3 - Article
SN - 0169-4332
VL - 464
SP - 716
EP - 724
JO - Applied Surface Science
JF - Applied Surface Science
ER -