THERMAL BEHAVIOR OF Cu-DOPED TiO2 GELS SYNTHESIZED BY THE SOL-GEL METHOD

被引：3

作者：

Pandele-Cusu, Jeanina ^{[1
]}

Atkinson, Irina ^{[1
]}

Rusu, Adriana ^{[1
]}

Apostol, Nicoleta ^{[2
]}

Teodorescu, Valentin ^{[2
]}

Predoana, Luminita ^{[1
]}

Szilagyi, Imre M. ^{[3
]}

Pokol, Gyorgy ^{[3
,4
]}

Zaharescu, Maria

机构：

[1] Roumanian Acad, Ilie Murgulescu Inst Phys Chem, 202 Spl Independentei, Bucharest 060021, Romania

[2] Natl Inst Mat Phys, 405 Bis Atomistilor St, Magurele Ilfov 077125, Romania

[3] Budapest Univ Technol & Econ, Dept Inorgan & Analyt Chem, Muegyet Rakpart 3, H-1111 Budapest, Hungary

[4] Hungarian Acad Sci, Res Ctr Nat Sci, Magyar Tudosokkorutja 2, H-1117 Budapest, Hungary

来源：

REVUE ROUMAINE DE CHIMIE | 2021年 / 66卷 / 03期

关键词：

ENHANCED PHOTOCATALYTIC ACTIVITY; METAL-IONS; FE; DEGRADATION; POWDERS; CE; CR; MN; NI;

D O I：

10.33224/rrch.2021.66.3.01

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The thermal behavior of Cu-doped TiO2 gels obtained by the sol-gel method was investigated by thermogravimetric and differential thermal analysis (TG/DTG/DTA) and differential scanning calorimetry (DSC) measurements. The comparative investigation of the structure and morphology of the as-prepared gels and of the nanopowders obtained by annealing them was realized by transmission electron microscopy (TEM), Fourier transmission infrared spectroscopy (FTIR), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). Significant differences were noticed depending on the amount of dopant (0.5 or 2.0 mol % CuO). A higher dopant concentration resulted in a more complex decomposition of the sample. This behavior was associated with the formation of various molecular species in the sol-gel solutions before gelation, determined by the different amount of the dopant used.

引用

页码：219 / 229

页数：11

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