Channelled Porous TiO2 Synthesized with a Water-in-Oil Microemulsion

被引：7

作者：

Malgras, Victor ^{[1
]}

Jood, Priyanka ^{[2
]}

Sun, Ziqi ^{[1
]}

Dou, Shi Xue ^{[1
]}

Yamauchi, Yusuke ^{[3
]}

Kim, Jung Ho ^{[1
]}

机构：

[1] Univ Wollongong UOW, ISEM, North Wollongong, NSW 2500, Australia

[2] Natl Inst Adv Ind Sci & Technol, Energy Technol Res Inst, Tsukuba, Ibaraki 3058568, Japan

[3] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050044, Japan

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2014年 / 20卷 / 33期

基金：

澳大利亚研究理事会;

关键词：

channels; porous materials; surface chemistry; surfactants; titanium dioxide; REVERSE MICELLES; TITANIA; NANOCRYSTALS; FABRICATION; EFFICIENCY; VISCOSITY; HYDROGEN; DENSITY; FILM;

D O I：

10.1002/chem.201402179

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Porous titanium dioxide synthesized with a bicontinuous surfactant template is a promising method that leads to a high active surface area electrode. The template used is based on a water/isooctane/dioctyl sodium sulfosuccinate salt together with lecithin. Several parameters were varied during the synthesis to understand and optimize channel formation mechanisms. The material is patterned in stacked conical channels, widening towards the centre of the grains. The active surface area increased by 116% when the concentration of alkoxide precursors was decreased and increased by 241% when the template formation temperature was decreased to 10 degrees C. Increasing the oil phase viscosity tends to widen the pore aperture, thus decreasing the overall active surface area. Changing the phase proportions alters the microemulsion integrity and disrupts channel formation.

引用

页码：10451 / 10455

页数：5

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