Immobilized TiO2 nanoparticles produced by flame spray for photocatalytic water remediation

被引：14

作者：

Bettini, Luca Giacomo ^{[1
,2
]}

Diamanti, Maria Vittoria ^{[3
]}

Sansotera, Maurizio ^{[3
]}

Pedeferri, Maria Pia ^{[3
]}

Navarrini, Walter ^{[3
]}

Milani, Paolo ^{[1
,2
]}

机构：

[1] Univ Milan, CiMaINa, Via Celoria 16, I-20133 Milan, Italy

[2] Univ Milan, Dept Phys, Via Celoria 16, I-20133 Milan, Italy

[3] Politecn Milan, Dept Chem Mat & Chem Engn Giulio Natta, Via Mancinelli 7, I-20131 Milan, Italy

来源：

JOURNAL OF NANOPARTICLE RESEARCH | 2016年 / 18卷 / 08期

关键词：

Titanium dioxide; Nanoparticles; Flame spray pyrolysis; Photocatalysis; Water remediation; Environmental effects; HYDROGEN-PRODUCTION; MINERALIZATION; MEMBRANES; ANATASE; FIBER;

D O I：

10.1007/s11051-016-3551-6

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Anatase/rutile mixed-phase titanium dioxide (TiO2) photocatalysts in the form of nanostructured powders with different primary particle size, specific surface area, and rutile content were produced from the gas-phase by flame spray pyrolysis (FSP) starting from an organic solution containing titanium (IV) isopropoxide as Ti precursor. Flame spray-produced TiO2 powders were characterized by means of X-ray diffraction, Raman spectroscopy, and BET measurements. As-prepared powders were mainly composed of anatase crystallites with size ranging from 7 to 15 nm according to the synthesis conditions. TiO2 powders were embedded in a multilayered fluoropolymeric matrix to immobilize the nanoparticles into freestanding photocatalytic membranes. The photocatalytic activity of the TiO2-embedded membranes toward the abatement of hydrosoluble organic pollutants was evaluated employing the photodegradation of rhodamine B in aqueous solution as test reaction. The photoabatement rate of best performing membranes significantly overcomes that of membranes produced by the same method and incorporating commercial P25-TiO2.

引用

页数：10

共 42 条

[1] Photocatalytic degradation of rhodamine dyes with nano-TiO2 [J].