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Hao Ren

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About

Dr. Hao Ren is a postdoc in Dr. Kisailus’s Lab. He received his bachelor degree of engineering in July 2010 from University of Science and Technology Beijing in China. After that, he studied physical chemistry and did research for his PhD degree at University of Science and Technology Beijing in China and got his PhD degree in January 2016. He joined this group in March 2016. During his PhD period, Hao mainly focused on synthesis of hierarchical multi-shelled micro-nano transition metal oxide hollow spheres including TiO 2 , SnO 2 , Fe 2 O 3 and so on. He also studied applications of these multi-shelled hollow spheres as functional materials, for example, lithium-ion batteries, dye-sensitized solar cells and photocatalysis. As a postdoc in Dr. Kisailus’s lab, Hao has been doing research on bio-inspired synthesis of ZnO rods on self-assembly monolayers decorated gold wafers. As a widely used functional semiconductor, to control the orientation on ZnO rods on substrates is really important since the orientation can affect its properties greatly. Hao firstly controlled the synthesis easily using the bio-inspired synthesis and now he has been trying to figure out the mechanism between the organic and inorganic materials. He is also synthesizing a very useful material boron nitride. Cubic phase of boron nitride could be used as super hard material and hexagonal phase has good electrochemical properties. He is trying to synthesize different phased boron nitride and to study their properties.

Research

ZnO is a widely used functional semiconductor material. The orientations of ZnO rods on substrates is an important factor that affects its properties and applications. We try to use bio-inspired synthesis method by the organic-inorganic nucleation effect to control the orientations of ZnO rods on substrates, easily using a chemical bath process at low temperature. The orientations of ZnO rods could be well controlled by adjusting the organic reagents. This bio-inspired method is a promising way for the orientation control fabrication.

Placeholder image Figure 1. Tilted SEM micrograph of an example to show upright ZnO rods on wafers.