Hongzhi Wang

Continuous synthesis of CdSe-ZnS composite nanoparticles in a microfluidic reactor

ZnS-coated CdSe composite particles have been continuously synthesized in a microfluidic reactor. By using this system, CdSe particles and a ZnS coating can be produced in sequence, and the particle size and layer thickness can be directly adjusted by the residence time. It demonstrated that the continuous synthesis in the microreactor was a simple and efficient way to prepare composite particles with different structures and determine the optimized experimental conditions.

Preparation of titania particles utilizing the insoluble phase interface in a microchannel reactor

A stable interface between two insoluble currents in a microchannel reactor has been obtained by selecting the solvents and adjusting the flow rate; titania particles with a size of less than 10 nm could be prepared continuously on this interface; this new method shows great advantage for the control and measurement of particle sizes.

Synthesis of CdSe magic-sized nanocluster and its effect on nanocrystal preparation in a microfluidic reactor

CdSe magic-sized nanoclusters were synthesised at relatively low temperatures (90–150 °C) in the organometallic raw material solution by a very simple method. The variation process from nanoclusters to nanocrystals has been determined using the microreactor, and it was found that these nanoclusters could increase the CdSe nuclei number and product yield in the microfluidic reactor method. Meanwhile, the microreactor shows the advantage for studying the nanocrystal-growth process due to the precise time and temperature control and high reproducibility.

Continuous Self Arrangement of Nanoparticles in a Micro-Capillary

Silica particle arrangement has been prepared on the inner surface of a long micro-capillary by a continuous self-organized process. This particle arrangement is expected to modify the surface property and design the inner wall microstructure of a microchannel system.