Flame-nozzle synthesis of nanoparticles with closely controlled size, morphology and crystallinity

被引：42

作者：

Wegner, K ^{[1
]}

Stark, WJ ^{[1
]}

Pratsinis, SE ^{[1
]}

机构：

[1] Swiss Fed Inst Technol, Inst Proc Engn, CH-8092 Zurich, Switzerland

来源：

MATERIALS LETTERS | 2002年 / 55卷 / 05期

关键词：

aerosol flame reactor; nanoparticles; quenching; expansion; nozzle; titania;

D O I：

10.1016/S0167-577X(02)00385-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A process for close control of primary particle size morphology and crystallinity of flame made nanoparticles is presented. According to this freshly made titania aerosol nanoparticles are rapidly quenched in a critical flow nozzle essentially freezing particle growth at desired levels. The nanoparticles are produced in a methane/oxygen diffusion flame reactor by oxidation of titanium tetra isopropoxide (TTIP). Precise control of the average primary particle size reduced agglomeration and phase composition is achieved by positioning of the quenching nozzle above the burner and controlling gas and precursor flow rates. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：318 / 321

页数：4

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