Nanomaterials Technology Pte Ltd

Beijing University of Chemical Tehcnology

Changzhou Institute of Advanced Material of Beijing University of Chemical Technology

Jimmy Sung Lai Yun

Zhigang Shen

Jianfeng Chen

Jiyao Zhang

Zhe Wang

Jian Chen

Wenhao Chen

Xiaofei Zeng

Lingyan Gao

William Glover

Giawen Sim

Jun Hu

Nital Arvind Jugade

The present invention is related to a method for preparing VIB Group metal oxide particles or dispersions, wherein the VIB Group metal is tungsten or molybdenum. The methods include: 1) providing precursors of VIB Group metal oxide, reductants and supercritical fluids. 2) said VIB Group metal oxide particles, or dispersions are obtained by the reaction between said metal oxide precursors, and reductants are under supercritical state in said supercritical fluids. Especially, said VIB Group metal oxide can be tungsten bronze, molybdenum bronze, or tungsten and molybdenum bronze which can be present by the formula ABMO. Wherein, A represents element exists in the form of dopant cation; and B represents element exists in the form of dopant anion; O represents oxygen; 0&#x2264;x&#x2264;1, 0&#x2264;y&#x2264;1, 0&#x3c;x+y&#x2264;1, and 2&#x2264;z&#x2264;3. The said VIB Group metal oxide particles and dispersions can be applied to the glasses of houses, buildings, automobiles, ships etc, with high transparency and NIR and UV lights shielding properties, by which the control of sunlight and heat radiation can be achieved.

Preparation methods and uses of doped VIB group metal oxide nanoparticles or dispersions thereof

A process for making particles for delivery of drug nanoparticles is disclosed herein. The process comprises the steps of (a) forming a suspension of drug nanoparticles by mixing a precipitant solution with an anti-solvent solution under micro-mixing environment, where the formed nanoparticles have a narrow particle size distribution; (b) providing an excipient to at least one of the precipitant solution, the anti-solvent solution and the suspension of drug nanoparticles, the excipient being selected to maintain said drug nanoparticles in a dispersed state when in liquid form; and (c) drying the suspension of drug nanoparticles containing the excipient therein to remove solvent therefrom, wherein removal of the solvent causes the excipient to solidify and thereby form micro-sized matrix particles, each micro-sized particle being comprised of drug nanoparticles dispersed in a solid matrix of the excipient.

Process for making particles for delivery of drug nanoparticles

There is disclosed a process of making nano-sized or micro-sized precipitate particles. The process comprising the steps of mixing, in a reaction zone, a metal salt solution with a precipitant solution to form a precipitate, said precipitate being at least one of a metal chalcogenide, metal hydroxide and metal oxide; and applying a shear force to said mixing solutions in said reaction zone during said mixing step, wherein said shear force and the conditions within said reaction zone form said nano-sized or micro-sized precipitate particles.

Process for making nano-sized and micro-sized precipitate particles

Growing community of inventors

Singapore, Singapore

Jimmy Sung Lai Yun