Heterostructured nanorod array with piezophototronic and plasmonic effect for photodynamic bacteria killing and wound healing
By Yu, Xin; Wang, Shu; Zhang, Xiaodi; Qi, Anhui; Qiao, Xiran; Liu, Zhirong; Wu, Mengqi; Li, Linlin; Wang, Zhong Lin
Published in Nano Energy
2018
Abstract
Bacteria induced infectious diseases have threated the lives and health of millions people each year. Nanosized titanium dioxide (TiO2) have been developed for photodynamic bacterial killing with minimal drug resistance, but the efficiency was restricted by their large band gap, limited light-absorption region, and rapid electron-hole recombination. In this work, we rationally fabricated a TiO2/BTO/Au multilayered coaxial heterostructured nanorod array by inserting a ferroelectric semiconductor barium titanate (BaTiO3) nanolayer between TiO2 nanorod and gold nanoparticles (AuNPs). The TiO2/BTO/Au heterostructure showed greatly enhanced reactive oxygen species (ROS) (superoxide (O2
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