ao8b00457_si_001.pdf (5.57 MB)
Branched CdO/ZnO Core/Shell Heterogeneous Structure and Its Enhanced Photoelectrocatalytic Performance
journal contribution
posted on 2018-09-20, 17:38 authored by Pu Sun, Ruping Liu, Ruifang Ma, Zhengdao Xie, Fan Su, Yanfang Gong, Zeming Mu, Luhai Li, Yen Wei, Qiang WanBranched
nanostructures of semiconductors based on one-dimensional heterostructures
have many promising applications in optoelectronics, supercapacitors,
photocatalysts, etc. Here, we report a novel branched core/shell CdO/ZnO
hetero-nanostructure that resembles a Crimson bottlebrush (Callistemon Citrinus) but with intriguing hexagonal
symmetry. The nanomaterials were fabricated via an improved one-step
chemical vapor deposition method and consist of a CdO wire as the
core and ZnO as the shell. With cadmium acting as a catalyst, ZnO
nanowires grow as perpendicular branches from the CdO/ZnO one-dimensional
core/shell structure. The nanostructures were characterized with X-ray
diffraction scanning and transmission electron microscopy. A homogeneous
epitaxial growth mechanism has been postulated for the formation of
the nanostructure. The materials show a broad and strong absorption
ranging from visible to ultraviolet and a better photoelectrocatalytic
properties in comparison to pure ZnO or CdO. Our synthetic strategy
may open up a new way for controlled preparation of one-dimensional
nanomaterials with core/shell heterostructure, which could find potential
applications in solar cells and opto-electrochemical water-splitting
devices.
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transmission electron microscopyCallistemon Citrinuschemical vapor deposition methodEnhanced Photoelectrocatalytic Performance Branched nanostructuresopto-electrochemical water-splitting devicesX-ray diffraction scanningapplicationnanomaterialCrimson bottlebrushcoreheterostructureepitaxial growth mechanismCdO wirematerials showZnO nanowiresphotoelectrocatalytic properties
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