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

A nano-scale, sediment-based technology, applied in chemical methods for liquid-liquid reactions, nanotechnology, nanotechnology, etc., can solve problems such as environmental pollution sources

Inactive Publication Date: 2009-09-02
XIAMEN NANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this reaction uses hydrogen sulfide gas as a reactant, which is a potential source of environmental pollution

Method used

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

Examples

Experimental program
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Embodiment Construction

[0065] method

[0066] Exemplary, non-limiting embodiments of methods of preparing nanoscale metal chalcogenide and metal oxide particles are disclosed. The method includes the steps of mixing a metal salt solution with a precipitant solution under conditions to precipitate at least one of nanoscale metal chalcogenide and metal oxide particles.

[0067] The metal salt compounds used in the process may be completely or partially soluble in the chosen solvent. Preferably, the metal salt is a metal acetate, a metal halide salt, a metal nitrate, a metal phosphate, a metal sulfate, a hydrate thereof or a mixture thereof.

[0068] The metal of the metal salt solution may include a metal selected from alkali metals, alkaline earth metals, a metal selected from transition metals, and a metal selected from the main group of the periodic table. Exemplary metals for metal salts include Mg, Ca, Sr, Ba, Ag, Zn, Fe, Cu, Co, Al, Ce, Sn, Zr, Nb, Ti, and Cr.

[0069] The anions of the meta...

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Abstract

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.

Description

technical field [0001] The present invention generally relates to methods of preparing metal oxide, metal chalcogenide and metal hydroxide particles and metal oxide particles, particularly nanoscale and microscale particles. Background technique [0002] Recently, nanoscale metal chalcogenide materials have become important research topics due to their potential applications as biomarkers, nonlinear optical materials, light-emitting devices, photodetectors, catalysts, and chemical sensors, among others. A known method for the preparation of metal chalcogenide nanomaterials involves reactions in a defined medium such as microemulsions or polymer matrices, where difficulties are encountered in the preparation of uniformly sized particles. [0003] Although many synthetic methods for preparing crystalline metal chalcogenides have been reported, large-scale synthesis or mass production of nanoscale metal chalcogenides is still a challenge. Metal chalcogenides can be prepared us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01G1/00B01J8/00B01J14/00C01D1/20C01D1/22C01G1/02C01G1/12C01G3/02C01G3/12C01G9/02C01G9/08C01G19/02C01G23/04C01G23/053C01G25/02C01G49/02C01G49/12C01F17/235
CPCC01G19/02C01G49/06C01G23/0536B01J8/10C01G9/08C01G25/02C01G9/02C01B17/20C01F17/0043C01B19/007C01P2002/72B01F7/00558B01J2219/00006C01G49/08C01P2004/64B01J19/1806C01P2004/04C01P2004/52Y10S977/773B82Y30/00C01G3/02C01F17/235B01F27/118
Inventor 沈志刚张纪尧沈嘉雯甄崇礼陈建峰
Owner XIAMEN NANOTECH
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