LOCAL ORDER IN SOL-GEL DERIVED GLASSY TIO2

被引：10

作者：

ANTONIOLI, G

BERSANI, D

LOTTICI, PP

MANZINI, I

GNAPPI, G

MONTENERO, A

机构：

[1] UNIV PARMA,DEPT PHYS,I-43100 PARMA,ITALY

[2] CONSORZIO RIC INNOVAZ VETRO,CORIVE,I-43100 PARMA,ITALY

[3] UNIV PARMA,DEPT CHEM,I-43100 PARMA,ITALY

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 1995年 / 97卷 / 1-4期

关键词：

D O I：

10.1016/0168-583X(94)00390-4

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The short range order around Ti atoms in sol-gel derived bulk amorphous TiO2 is investigated by X-Ray Absorption Spectroscopy (EXAFS and XANES). Two Ti-O distances are found: the longer distance is attributed to the presence of anatase micro-crystallites, whereas the shorter one is due to a residual of the alkoxide precursor. XANES measurements give no evidence of tetrahedrally coordinated Ti, both in the organic precursor or in the amorphous phase. The X-Ray absorption data confirm that thermal treatments up to 350 degrees C on bulk amorphous TiO2 give crystalline anatase and up to 750 degrees C give crystalline rutile.

引用

页码：198 / 201

页数：4

共 18 条

[1] XANES AND EXAFS STUDY OF TITANIUM ALKOXIDES [J].