Yeung K.L. – TechConnect Briefs

From nanopores to nanoshells: The transformation of MCM-41 into ultrathin wall, hollow silica nanospheres

Ho W.Y., Yeung K.L., Hong Kong University of Science and Technology, HK

This work describes the preparation of ultra-small and ultra-thin hollow silica nanospheres from mesoporous MCM-41. The partially converted MCM-41, which retained the silhouette of the original MCM-41 particle, but is severely riddled with holes from [...]

Immobilization of biomolecules in nano-bottles

Dong O., Yeung K.L., Hong Kong University of Science and Technology, HK

This work reports the fabrication of nano-bottles for the containment of biomolecules on a surface of the substrate. Nano-bottles of different sizes from 10 nm to 200 nm were prepared by using nanotextured polymers formed [...]

Self-assembled Polymer Nanocylinders as Template for Nanoporous Metal Oxide Films

Dong O., Yao N., Yeung K.L., the Hong Kong University of Science and Technology, CN

A novel simple method to fabricate high-density and large-area polymer nanopillars on silicon wafer. This method is versatile and can be applied to pattern a wide variety of polymer thin film materials with various proprieties [...]

Zeolite Micropattern for Biological Applications

Wong L.W., Sun W., Lam K.F., Yeung K.L., Hong Kong University of Science and Technology, HK

A facile method was established using composition-gradient pattern on zeolite surface to guide the deposition and formation of chemical and biomolecular patterns .The goal is to achieve well-defined spatial patterns of bioactive molecules of precise [...]

Zeolite Membrane Microreactors for Fine Chemical Synthesis

Zhang X., Lai S.M., Lam K.F., Yeung K.L., Martin-Aranda R., Hong Kong University of Science and Technology, CN

The performance of a membrane microreactor was tested and compared with that of microreactor, packed bed reactor (PBR) and packed bed membrane reactor (PBMR) for the Knoevenagel condensation reaction of benzaldehyde and ethyl cyanoacetate to [...]

Preparation of Zeolite Microspheres and their Application in Biology

Wong L.W., Yeung K.L., the Hong Kong University of Science and Technology, CN

The potential use of zeolite hollow microspheres in biological studies was illustrated in the study of formation of neuromuscular junction (NMJ). The hollow zeolite microspheres carry and locally deliver signalling molecules, thus mimicking the in [...]

Gold Removal and Recovery using Mesoporous Silica Adsorbents

Lam K.F., Yeung K.L., McKay G., Hong Kong University of Science and Technology, CN

This work investigates the selective removal of dissolved metal ions from aqueous solutions using MCM-41 adsorbents grafted with different chemical moieties. A systematic study was conducted to understand the adsorption mechanisms, in order to better [...]