La
x
Fe0.1–x
codoped ZnO nanorod arrays have been successfully
prepared
by the simple hydrothermal method, and the concentration ratio of
1:1 of Fe and La endows the codoped ZnO arrays with optimal ferroelectric
properties. Then the ferroelectric La0.05Fe0.05 codoped ZnO nonoarrays and polydimethylsiloxane (PDMS) are used
as positive and negative friction materials, respectively, to assemble
the triboelectric nanogenerators (TENGs). Compared with Fe- or La-doped
ZnO positive friction materials, the La0.05Fe0.05 codoped ZnO positive friction layer increases the output current
density of TENGs by nearly 10 times, and the TENGs have excellent
output stability. Lastly, the La0.05Fe0.05 codoped
ZnO/PDMS TENGs have been successfully used for the high-efficient
electrocatalytic degradation of RhB in simulated seawater. The work
is very beneficial to the development of self-powered electrochemical
degradation of organic pollutants in wastewater.
To improve the spreading ability of water droplet on structured surface, the tip effect is proposed to enhance the local electric field near the cone tip under the voltage application, and further increases the horizontal force on the water droplet.
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