Effect of solvent surface tension on the radius of hematite nanoparticles

被引：8
|
作者：
Pour, Ali Nakhaei [1 ]
Housaindokht, Mohammad Reza [1 ]
Monhemi, Hassan [1 ]
机构：
[1] Ferdowsi Univ Mashhad, Dept Chem, Mashhad, Iran
来源：
COLLOID JOURNAL | 2014年 / 76卷 / 06期
基金：
美国国家科学基金会;
关键词：
FISCHER-TROPSCH SYNTHESIS; KELVIN EQUATION; PARTICLE-SIZE; IRON CATALYST; REVERSE MICROEMULSION; PRODUCTS SELECTIVITY; MESOPOROUS SILICAS; PRECIPITATION;
D O I：
10.1134/S1061933X14060143
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this work, the hematite (Fe2O3) nanoparticles were synthesized by homogeneous precipitation in alcohol (tert-butanol)/water mixed solvents with varied surface tension. The surface tension of the solvent was decreased from 55.8 to 15.9 mN m(-1) by the increasing of the alcohol content from 20 to 80 vol %. The size of the particles was determined by BET, XRD and TEM techniques. Based on XRD results, the crystalline phase of Fe2O3 in all samples was attributed to the cubic hematite structure. The results show that the average particle size of the prepared hematite samples is decreased from 38 to 14 nm upon decreasing surface tension from 55.8 to 15.9 mN m(-1).
引用
收藏
页码：782 / 787
页数：6
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