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Microemulsion-mediated hydrothermal

Microemulsion-Mediated Hydrothermal Synthesis Triton X-100 was served as the surfactant, n-hexanol as co-surfactant, cyclohexane as the continuous oil phase, and a solution of titanium -butoxide dissolved in an acid (HCl or HNO3) was employed as the dispersed aqueous phase. The concentration of hydrochloric acid or nitric acid ranged from 0.5 M to 2.0 M. A transparent feedstock of microemulsions was charged into a Teflon-lined stainless autoclave and hydrothermal reaction was... [Pg.454]

Wu et al. [59] have used a combined procedure of microemulsion-mediated hydrothermal method (MMH) to prepare uniform-sized nanoparticles of Ti02 (both rutile and anatase). Tetrabutyl titanate was dissolved in HC1 or HNO3, and the solution was then allowed to disperse in an organic phase to prepare the microemulsion. The aqueous core of the system, water/cyclohexane/Triton XIOO/hexanol was used as the microreactor for the controlled growth of Ti02 particles under hydrothermal conditions. The influences... [Pg.189]

On the other hand, microemulsion system could combine hydrothermal methodology to enhance the crystallization of NPs. Yan et al. s)mthe-sized t-YVOi NPs by CTAB microemulsion assisted hydrothermal reaction (Sun et al., 2002). As a t)q)ical four-component reverse micelle system, the solution contained surfactant CTAB, cosurfactant n-hexanol, oil phase n-heptane and water phase with inorganic salt. When the W value (the molar ratio of water/CTAB) was below 16, the sizes of NPs could be mediated in the range of 9-50 nm by adjusting the... [Pg.362]

The preparation of nanomaterials is one of the most active fields in material science. Number of techniques have been used for the production of nanoparticles gas-evaporation [11], sputtering [12], sol-gel method [13], hydrothermal [14], microemulsion [15, 16], polyols [17], laser pyrolysis [18], sonochemical synthesis [19], chemical coprecipitation [20-22], and so on. Among them, the surfactant assembly mediated synthesis is attracting more attention because it allows for a good... [Pg.138]


See other pages where Microemulsion-mediated hydrothermal is mentioned: [Pg.382]    [Pg.453]    [Pg.454]    [Pg.457]    [Pg.460]    [Pg.363]    [Pg.418]    [Pg.205]    [Pg.193]    [Pg.382]    [Pg.453]    [Pg.454]    [Pg.457]    [Pg.460]    [Pg.363]    [Pg.418]    [Pg.205]    [Pg.193]    [Pg.293]   


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