Organic-ligand-assisted supercritical hydrothermal synthesis of titanium oxide nanocrystals leading to perfectly dispersed titanium oxide nanoparticle in organic phase

2007 ◽  
Vol 9 (6) ◽  
pp. 1067-1071 ◽  
Author(s):  
Tahereh Mousavand ◽  
Jing Zhang ◽  
Satoshi Ohara ◽  
Mitsuo Umetsu ◽  
Takashi Naka ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Titanium Oxide ◽  
Organic Phase ◽  
Organic Ligand ◽  
Oxide Nanoparticle ◽  
Supercritical Hydrothermal Synthesis

scholarly journals One-pot synthesis of nano titanium dioxide in supercritical water

2020 ◽  
Vol 9 (1) ◽  
pp. 410-417
Author(s):  
Panpan Sun ◽  
Shuzhong Wang ◽  
Yanhui Li ◽  
Tuo Zhang ◽  
Dong Wang ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Supercritical Water ◽  
Particle Surface ◽  
Organic Ligand ◽  
Growth Direction ◽  
Degree Of Crystallinity ◽  
Subcritical State ◽  
One Pot ◽  
Supercritical Hydrothermal Synthesis ◽  
Nano Titanium Dioxide

AbstractSupercritical hydrothermal synthesis of nanosized metal oxides is of great interest for scholars due to its one-pot and readily realizing commercial production process. Hydrothermal synthesis of nanosized TiO2 in subcritical and supercritical water was investigated with different reaction temperatures (250–450°C), time (3–10 min), precursor species (Ti(SO4)2, TiCl4), and the addition of a surfactant (CH3(CH2)5NH2). TiO2 synthesized under supercritical state has a higher degree of crystallinity when compared with TiO2 obtained from subcritical state, which is attributed to a higher reaction rate. Extending reaction time from 3 to 10 min leads to the growth of crystal and broader size distribution (36.66 ± 8.5 nm). More uniform products can be obtained when Ti(SO4)2 acting as the precursor compared with TiCl4 being the precursor. The application of surfactant CH3(CH2)5NH2 in the synthesis makes chemical bonding between the particle surface and organic ligand. It affects the growth direction of TiO2 crystal; as a result, rod-like TiO2 crystal is obtained.

Supercritical hydrothermal synthesis of zeolites from coal fly ash for mercury removal from coal derived gas

2015 ◽  
Vol 136 ◽  
pp. 96-105 ◽  
Author(s):  
Jiancheng Wang ◽  
Dekui Li ◽  
Fenglong Ju ◽  
Lina Han ◽  
Liping Chang ◽  
...  
Keyword(s):  
Fly Ash ◽  
Hydrothermal Synthesis ◽  
Coal Fly Ash ◽  
Mercury Removal ◽  
Supercritical Hydrothermal Synthesis

Supercritical Hydrothermal Synthesis of Nanoparticles

2004 ◽  
Vol 2004 (0) ◽  
pp. 225-230
Author(s):  
Seiichi TAKAMI ◽  
Satoshi OHARA ◽  
Mitsuo UMETSU ◽  
Takao TSUKADA ◽  
Tadafumi ADSCHIRI
Keyword(s):  
Hydrothermal Synthesis ◽  
Synthesis Of Nanoparticles ◽  
Supercritical Hydrothermal Synthesis

Supercritical hydrothermal synthesis, thermal, spectroscopic and magnetic studies of two new polymorphs of Mn(SeO3)

2005 ◽  
pp. 1727-1733 ◽  
Author(s):  
Aitor Larrañaga ◽  
José L. Mesa ◽  
José L. Pizarro ◽  
L. Lezama ◽  
Jon P. Chapman ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Magnetic Studies ◽  
Supercritical Hydrothermal Synthesis
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