Nanostructured TiO2 modified by perfluoropolyethers: Gas phase photocatalytic activity

被引：6

作者：

Bianchi, Claudia L. ^{[1
]}

Ardizzone, Silvia ^{[1
]}

Cappelletti, Giuseppe ^{[1
]}

Cerrato, Giuseppina ^{[2
]}

Navarrini, Walter ^{[3
]}

Sansotera, Maurizio ^{[3
]}

机构：

[1] Univ Milan, Dipartimento Chim Fis & Elettrochim, I-20133 Milan, Italy

[2] Univ Turin, Dipartimento Chim, IFM & NIS Interdept Excellence Ctr, I-10125 Turin, Italy

[3] Politecn Milan, Dipartimento Chim Mat & Ingn Chim, I-20131 Milan, Italy

来源：

JOURNAL OF MATERIALS RESEARCH | 2010年 / 25卷 / 01期

关键词：

SURFACES; WETTABILITY; COATINGS; FEATURES;

D O I：

10.1557/JMR.2010.0008

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A high-molecular-weight perfluoropolyether (PFPE-YR) and a perfluoropolyether containing ammonium phosphate (PFPE-F10) have been evaluated as fluorinated coating for high-surface-area titanium oxides. Coated nano-TiO2 shows hydrophobic properties and excellent buoyancy on water. In addition to photoactivity toward the degradation of toluene in gas phase, specific trial analyses have been completed to estimate the modified titanium oxide features. Brunauer-Emmett-Teller (BET) analysis for the surface area determination, ultraviolet-visible spectroscopy (UV-Vis) for the material electronic band gap, high-resolution transmission electron microscopy (HRTEM), x-ray diffraction (XRD), and x-ray photoelectron spectroscopy (XPS) for the morphology, structure, and surface composition, respectively, and water contact angle and infrared (IR) analysis have been performed to estimate the wettability and stability of coated titanium.

引用

页码：96 / 103

页数：8

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