Size analysis in low-pressure nanoparticle reactors: comparison of particle mass spectrometry with in situ probing transmission electron microscopy

被引：27

作者：

Janzen, C ^{[1
]}

Kleinwechter, H ^{[1
]}

Knipping, J ^{[1
]}

Wiggers, H ^{[1
]}

Roth, P ^{[1
]}

机构：

[1] Univ Duisburg Gesamthsch, Inst Verbrennung & Gasdynam, D-47048 Duisburg, Germany

来源：

JOURNAL OF AEROSOL SCIENCE | 2002年 / 33卷 / 06期

关键词：

nanoparticle synthesis; diagnostics;

D O I：

10.1016/S0021-8502(02)00048-4

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The comparison of particle mass spectrometry (PMS) and transmission electron microscopy (TEM) as size determining techniques has been performed on nanosized particles produced in two different types of low-pressure gas-phase reactors. Results from PMS measurements are compared to image analysis carried out on particles in situ sampled on TEM grids either by non-intrusive molecular beam probing or by a high-speed sampling method. It has been shown that for flame generated Fe2O3 nanoparticles the agreement between PMS measurement and TEM imaging is very good. ZnO particles, synthesized in a microwave plasma reactor show a similar good agreement for the respective analysis methods. To the contrary, the measured size of GeO2 particles originating from a plasma process differs for the methods employed. PMS measurements yield smaller particles compared to TEM image analysis of molecular beam sampled particles which can be attributed to uncertainties in the physical properties of nano-GeO2 particles. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：833 / 841

页数：9

共 10 条

[1] High rate synthesis of nanophase materials [J].

Chen, Y ;

Glumac, N ;

Kear, BH ;

Skandan, G .

NANOSTRUCTURED MATERIALS, 1997, 9 (1-8) :101-104

[2] MORPHOLOGY OF FLAME-GENERATED SOOT AS DETERMINED BY THERMOPHORETIC SAMPLING [J].

DOBBINS, RA ;

MEGARIDIS, CM .

LANGMUIR, 1987, 3 (02) :254-259

[3] Formation and characteristics of Fe2O3 nano-particles in doped low pressure H2/O2/Ar flames [J].

Janzen, C ;

Roth, P .

COMBUSTION AND FLAME, 2001, 125 (03) :1150-1161

[4]

Janzen C, 2001, J NANOSCI NANOTECHNO, V1, P221, DOI [10.1166/jnn.2001.032, 10.1166/jnn.2001.025]

[5]

KLEINWECHTER H, 2002, UNPUB J MAT SCI

[6] GROWTH AND TRANSFORMATION OF TIO2 CRYSTALLITES IN AEROSOL REACTOR [J].

KOBATA, A ;

KUSAKABE, K ;

MOROOKA, S .

AICHE JOURNAL, 1991, 37 (03) :347-359

[7] Synthesis of Al2O3 and SnO2 particles by oxidation of metalorganic precursors in premixed H2/O2/Ar low pressure flames [J].

Lindackers, D ;

Janzen, C ;

Rellinghaus, B ;

Wassermann, EF ;

Roth, P .

NANOSTRUCTURED MATERIALS, 1998, 10 (08) :1247-1270

[8] DESIGN AND TEST OF A PARTICLE MASS-SPECTROMETER (PMS) [J].

ROTH, P ;

HOSPITAL, A .

JOURNAL OF AEROSOL SCIENCE, 1994, 25 (01) :61-73

[9] FLAME SYNTHESIS OF FINE PARTICLES [J].

ULRICH, GD .

CHEMICAL & ENGINEERING NEWS, 1984, 62 (32) :22-29

[10] DEVELOPMENT OF A LOW-PRESSURE AEROSOL SAMPLER [J].

WHITBY, E ;

HOSHINO, M .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1995, 66 (07) :3955-3965

← 1 →