Single-step synthesis of nanostructured γ-alumina with solvent reusability to maximise yield and morphological purity

被引：35
作者：
Bell, T. E. [1 ,2 ]
Gonzalez-Carballo, J. M. [3 ]
Tooze, R. P. [3 ]
Torrente-Murciano, L. [1 ,2 ]
机构：
[1] Univ Bath, Dept Chem Engn, Bath BA2 7AY, Avon, England
[2] Univ Bath, Ctr Sustainable Chem Technol, Bath BA2 7AY, Avon, England
[3] Sasol Technol UK, St Andrews KY16 9ST, Fife, Scotland
来源：
JOURNAL OF MATERIALS CHEMISTRY A | 2015年 / 3卷 / 11期
基金：
英国工程与自然科学研究理事会;
关键词：
HYDROTHERMAL SYNTHESIS; CARBON NANOTUBES; AL2O3; NANOTUBES; BOEHMITE;
D O I：
10.1039/c4ta06692h
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：
Insights of the chemical mechanism for the hydrothermal synthesis of nanostructured alumina are elucidated for the first time, demonstrating the effect of the NaOH : Al molar ratio not only on the resulting morphology of the material but also on the product yield. Highly uniform pure gamma-Al2O3 nanorods are synthesised under acidic conditions (pH < 4), while basic medium (pH > 9) lead to gamma-Al2O3 nanoplates. Maximisation of the morphological purity leads to a decrease in the overall aluminium yield which can be overcome by successful reusability of the synthesis medium in an effort to increase efficiency (yield and productivity) and minimise waste production towards feasible large-scale manufacturing of nanostructured materials.
引用
收藏
页码：6196 / 6201
页数：6
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