摘要： TiO sub(2) doped with F and N ions and modified with gold nanoparticles was prepared via sol-gel technique. Au modifier was added either by impregnation method or during synthesis of F,N-TiO sub(2). The microstructure, phase and element compositions of the obtained materials were examined by various techniques, such as XRD, nitrogen sorption, SEM, TEM, and XPS. The structure of TiO sub(2) was not influenced by the method of Au particles introduction. But the nature of gold nanoparticles distribution in the resulting material depends on the modification method. Impregnation resulted in Au nanoparticles predominantly located on F,N-TiO sub(2) surface. These species was easily detected by SEM and XPS. The presence of catalytically active forms, i.e. Au super(0) + Au super(3+), was shown. Au nanoparticles added into the reaction mixture during TiO sub(2) synthesis process influenced its lattice microstresses. It results in strong Au-support interaction and more efficient charge carrier separation. F,N-TiO sub(2) modified during its synthesis has shown the highest photocatalytic activity among all samples under visible light irradiation. Graphical Abstract https://static-content.springer.com/image/art%3A10.1007%2Fs10971-0 1 5-3732-2/MediaObjects/10971_2015_3732_Figa_HTML.gif 出版日期： 2015-09-01 出處： Journal of sol-gel science and technology, 2015-09, Vol.75 (3), p.617-624 識別號： ISSN: 0928-0707 識別號： EISSN: 1573-4846 識別號： DOI: 10.1007/s10971-015-3732-2
