Nano and Advanced Materials Institute Limited

Connie Sau Kuen Kwok

Ho Wang Tong

Chun Hay Ko

Chun Fai Ng

Ying Ying Ng

Ngar Yee Huen

Wah Kit Cheuk

Yu Hang Leung

Ka Man Tse

Arthur Hong Kin Kwong

A water filtration membrane is provided, capable of removing heavy metal ions, filtering out particulates, filtering out bacteria, as well as removing herbicides and volatile organic compounds (VOCs) from water. The membrane is composed of a mat of randomly oriented nanoparticle-coated nanofibers. The nanofibers are covalently bonded to a plurality of substantially uniformly-distributed ceramic nanoparticles embedded in or adhered on the surface of the polymer nanofibers through reactive functional groups. The ceramic nanoparticles have a pattern of deep grooves formed on the nanoparticle surfaces. The bonding of the nanoparticles to the nanofibers is sufficient to retain the nanoparticles on the nanofiber surfaces when water flows through the water filtration membrane. The diameter of the nanofibers is 50-200 nm. The size of the nanoparticles is &#x3c;40 nm, with a zeta potential of &#x2212;40 to &#x2212;45 mV in a dispersion medium. The nanoparticle deep grooves have an average size of approximately 1.2 nm or less.

Deeply grooved nanoparticle-coated nanofibers

The present invention provides a nano-crystallized herbal ingredient-containing package for use in a food processor or being used directly to prepare a herbal decoction. The package includes a housing; single or multiple herbal ingredient nano-crystals; one or more non-additive and anti-caking spacers for preventing caking that blocks solvent flowing through the package towards the single or multiple herbal ingredient nano-crystals during processing by the food processor; and optionally one or more stabilizing agents for stabilizing the single or multiple herbal ingredient nano-crystals during nano-crystallization of the herbal ingredients and during preparation of the herbal decoction. A method of preparing a herbal decoction from the package is also provided.

Nano-crystallized herbal ingredient-containing package and method of preparing herbal decoction

A membrane for skin comprising a plurality of randomly oriented core-shell nanofibers is provided in the present invention, where each of said core-shell nanofibers comprises at least an active-ingredient-loaded polymeric core and a non-polymeric shell consisting of active ingredients only surrounding the core. Related fabrication method of said membrane is also provided in the present invention.

Low friction core-shell nanofibrous membranes for delivery of active ingredients to the wet skin

The presently claimed invention provides a coating composition for an antimicrobial coating, and a method for synthesizing the coating composition. A coating method for deposition of the antibacterial coating is also provided. The antimicrobial coating of the present invention is effective in providing antimicrobial function, easy to be manufactured, stable and durable.

Growing community of inventors

Hong Kong, China

Connie Sau Kuen Kwok