Hydrothermal synthesis and in situ surface modification of boehmite nanoparticles in supercritical water

被引：66

作者：

Mousavand, T. ^{[1
]}

Ohara, S. ^{[1
]}

Umetsu, M. ^{[1
]}

Zhang, J. ^{[1
]}

Takami, S. ^{[1
]}

Naka, T. ^{[1
]}

Adschiri, T. ^{[1
]}

机构：

[1] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan

来源：

JOURNAL OF SUPERCRITICAL FLUIDS | 2007年 / 40卷 / 03期

关键词：

supercritical water; hydrothermal synthesis; surface modification; boehmite nanoparticles;

D O I：

10.1016/j.supflu.2006.07.021

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 situ surface modification of boehmite (AlOOH) nanoparticles during hydrothermal synthesis in supercritical water was examined by adding CH3(CH2)(4)CHO and CH3(CH2)(5)NH2 as modifier reagents to the reactants. Changes in surface properties of the nanoparticles by surface modification was observed by FTIR, dispersion in solvents and TEM analyses, which demonstrated that reagents chemically binded onto the surface of the AlOOH nanoparticles. The results of SEM and TEM pictures show that the surface modification affects crystal growth and reduces the particle size and changes the morphology of the particles. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：397 / 401

页数：5

共 29 条

[1] RAPID AND CONTINUOUS HYDROTHERMAL SYNTHESIS OF BOEHMITE PARTICLES IN SUBCRITICAL AND SUPERCRITICAL WATER [J].

ADSCHIRI, T ;

KANAZAWA, K ;

ARAI, K .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1992, 75 (09) :2615-2618

[2] Hydrothermal synthesis of metal oxide fine particles at supercritical conditions [J].

Adschiri, T ;

Hakuta, Y ;

Arai, K .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2000, 39 (12) :4901-4907

[3] Roles of water for chemical reactions in high-temperature water [J].

Akiya, N ;

Savage, PE .

CHEMICAL REVIEWS, 2002, 102 (08) :2725-2750

[4] Monolayer exchange chemistry of γ-Fe2O3 nanoparticles [J].

Boal, AK ;

Das, K ;

Gray, M ;

Rotello, VM .

CHEMISTRY OF MATERIALS, 2002, 14 (06) :2628-2636

[5] Quantum dot bioconjugates for ultrasensitive nonisotopic detection [J].

Chan, WCW ;

Nie, SM .

SCIENCE, 1998, 281 (5385) :2016-2018

[6] A novel route to toluene-soluble magnetic oxide nanoparticles: Aqueous hydrolysis followed by surfactant exchange [J].

Ghosh, M ;

Lawes, G ;

Gayen, A ;

Subbanna, GN ;

Reiff, WM ;

Subramanian, MA ;

Ramirez, AP ;

Zhang, JP ;

Seshadri, R .

CHEMISTRY OF MATERIALS, 2004, 16 (01) :118-124

[7] Effects of hydrothermal synthetic conditions on the particle size of γ-AlO(OH) in sub and supercritical water using a flow reaction system [J].

Hakuta, Y ;

Ura, H ;

Hayashi, H ;

Arai, K .

MATERIALS CHEMISTRY AND PHYSICS, 2005, 93 (2-3) :466-472

[8] Synthesis of ε-caprolactam from ε-caprolactone and ammonia in supercritical water [J].

Ito, H ;

Nishiyama, J ;

Adschiri, T ;

Arai, K .

KOBUNSHI RONBUNSHU, 2001, 58 (12) :679-684

[9] Photophysical, photochemical and photocatalytic aspects of metal nanoparticles [J].

Kamat, PV .

JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (32) :7729-7744

[10] PREPARATION AND PROPERTIES OF UNIFORM COATED COLLOIDAL PARTICLES .5. YTTRIUM BASIC CARBONATE ON POLYSTYRENE LATEX [J].

KAWAHASHI, N ;

MATIJEVIC, E .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1990, 138 (02) :534-542

← 1 2 3 →