Nanomaterials Technology Pte Ltd

Beijing University of Chemical Tehcnology

Xiamen Nanotech Co Ltd

Changzhou Institute of Advanced Material of Beijing University of Chemical Technology

Nanomaterials Technology Pte Ltd, Singapore

Zhigang Shen

Jianfeng Chen

Jiyao Zhang

Jimmy Sung Lai Yun

Guangwen Chu

Sung Lai Jimmy Yun

Jie Zhong

Wei Kian Soh

Zhe Wang

Jian Chen

Xiaolin Liu

Haikui Zou

Wenhao Chen

Xiaofei Zeng

Meng Tack Ng

Fen Guo

Jimmy Sunglai Yun

Aici Wang

Jun Hu

Nital Arvind Jugade

Lingyan Gao

William Glover

Giawen Sim

Hock Sing Sher

Runjing Liu

Yun Jimmy

Yit Wooi Goh

There is disclosed a tin-containing metal oxide nanoparticle, which has an index of dispersion degree less than 7 and a narrow particle size distribution which is defined as steepness ratio less than 3. There is disclosed dispersion, paint, shielding film and their glass products which comprise the said nanoparticles. Besides, there are also disclosed processes of making the tin-containing metal oxide nanoparticle and their dispersion. The tin-containing metal oxide nanoparticles and their dispersion disclosed herein may be applied on the window glass of houses, buildings, vehicles, ships, etc. There is provided an excellent function of infrared blocking with highly transparent, and to achieve sunlight controlling and thermal radiation controlling.

Nanometric tin-containing metal oxide particle and dispersion, and preparation method and application thereof

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 microchannel double pipe device comprises a channel for inner nozzle (), a channel for outer nozzle () and a mechanical probe (). The channel for outer nozzle () concentrically surrounds the channel for inner nozzle (), and the channel for inner nozzle () concentrically surrounds the mechanical probe (). Constricted at the outlet of the channel for inner nozzle (), the channel for inner nozzle () extends to form an inner nozzle core (). Constricted at the outlet of the channel for outer nozzle (), the channel for outer nozzle () extends to form an outer nozzle core (). The outer nozzle core () essentially concentrically surrounds the inner nozzle core (), and the outlets of the inner nozzle core () and the outer nozzle core () are at the same level essentially. The mechanical probe () is configured to intermittently empty the inner nozzle core (). The device can be used for microcosmic mixing and reaction, especially suitable for continuous preparation of inorganic, organic or medicine particles with nanostructure or micron-structure using liquid-liquid precipitation method.

Microchannel double pipe device and usage thereof

There is disclosed a process of making metal chalcogenide particles. The process comprises the steps of reacting a metal salt solution with a precipitant solution under conditions to form metal chalcogenide particles and by-product thereof, coating the metal chalcogenide particles with a surfactant; and separating the surfactant coated chalcogenide particles from the by-product to obtain metal chalcogenide particles substantially free of by-product.

Process of making metal chalcogenide particles

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

The invention relates to a process for the preparation of fine barium titanate (BaTiO) powders. The process comprises introducing an aqueous solution (I) containing salts of barium and titanium, and an aqueous basic solution (II) containing an inorganic or organic base separately and simultaneously into a high-gravity reactor with the high-gravity level of 1.25G to 12,500G and performing the reaction of the solution (I) with the solution (II) at a temperature of from 60 to 100&#xb0; C. The solution (I) is preheated to a temperature ranging from 60&#xb0; C. to 65&#xb0; C. and the solution (II) is preheated to a temperature ranging from 60&#xb0; C. to 100&#xb0; C. respectively prior to the reaction, in which the Ba/Ti molar ratio in the solution (I) is more than 1 and the concentration of the base in the solution (II) is such that the reaction mixture is maintained at a constant OHconcentration, preferably a pH value of about 14. The reaction product is separated by filtering and washed with deionized water to remove the impurity ions and excessive barium ions, and then dried to obtain BaTiOpowders. Said powders consist essentially of crystalline, primary particles having a uniform particle size ranging from 5 to 200 nm, an approximately spherical morphology and a high sintering activity.

High-gravity reactive precipitation process for the preparation of barium titanate powders

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

A novel process for the preparation of amorphous cefuroxime axetil particles and the amorphous cefuroxime axetil particles therefrom are disclosed in the invention. Specifically, the invention is implemented by means of antisolvent recrystallization to prepare the cefuroxime axetil in an amorphous form; particularly, the amorphous ultrafine or even nanosized cefuroxime axetil with a controllable particle size and a narrow particle size distribution. The cefuroxime axetil according to the invention can used to enhance bioavailability, since it is in an amorphous form and has a controllable particle size and a narrow particle size distribution.

Amorphous cefuroxime axetil and preparation process therefore

The invention provides CaCO/SiO.nHO nanocomposite particles and method of producing the same. A template nucleus is used calcium carbonate and the surface of nucleus is encapsulated by a SiO.nHO nanolayer. The invention also provides a CaCO/SiO.nHO nanocomposite particles having hollow structure, in which n=0-2. The nanocomposite particles according to the invention have a number of uses.

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Zhigang Shen