Photoactivity of Titanium Dioxide Foams

被引：2

作者：

Jami, Maryam ^{[1
]}

Dillert, Ralf ^{[1
]}

Suo, Yanpeng ^{[1
]}

Bahnemann, Detlef W. ^{[1
,2
]}

Wark, Michael ^{[3
]}

机构：

[1] Leibniz Univ Hannover, Inst Tech Chem, Callinstr 3, D-30167 Hannover, Germany

[2] St Petersburg State Univ, Lab Photoact Nanocomposite Mat, Ulyanovskaya Str 1, St Petersburg 198504, Russia

[3] Carl von Ossietzky Univ Oldenburg, Tech Chem, Carl von Ossietzky Str 9-11, D-26111 Oldenburg, Germany

来源：

INTERNATIONAL JOURNAL OF PHOTOENERGY | 2018年 / 2018卷

关键词：

PHOTOCATALYTIC OXIDATION; NITROGEN(II) OXIDE; MESOPOROUS LAYERS; LIGHT-INTENSITY; TIO2; FOAM; SURFACE; SEMICONDUCTOR; HYDROGEN; ROUTE;

D O I：

10.1155/2018/5057814

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：

TiO2 foams have been prepared by a simple mechanical stirring method. Short-chain amphiphilic molecules have been used to stabilize colloidal suspensions of TiO2 nanoparticles. TiO2 foams were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), UV-vis absorption spectroscopy, and scanning electron microscopy (SEM). The photoassisted oxidation of NO in the gas phase according to ISO 22197-1 has been used to compare the photoactivity of the newly prepared TiO2 foams to that of the original powders. The results showed that the photoactivity is increased up to about 135%. Foam structures seem to be a good means of improving the photoactivity of semiconductor materials and can readily be used for applications such as air purification devices.

引用

页数：9

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