Preparation and characterization of nanosized titania sensing film

被引：67

作者：

Ferroni, M

Carotta, MC

Guidi, V

Martinelli, G

Ronconi, F

Sacerdoti, M

Traversa, E

机构：

[1] Univ Ferrara, Dipartimento Fis, I-44100 Ferrara, Italy

[2] Univ Ferrara, INFM, I-44100 Ferrara, Italy

[3] Univ Ferrara, Ist Mineral, I-44100 Ferrara, Italy

[4] Dipartimento Sci Chim & Tecnol, I-00133 Rome, Italy

[5] Ist Nazl Fis Nucl, Sez Ferrara, I-44100 Ferrara, Italy

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2001年 / 77卷 / 1-2期

关键词：

thick film; TiO2; gas sensor; electron microscopy; differential thermal analysis;

D O I：

10.1016/S0925-4005(01)00688-8

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Thick films based on nanosized titania powders have been prepared and characterized. Addition of suitable dopant affected film evolution upon annealing as both anatase-rutile phase transition and grain growth are inhibited. Ta and Nb addition to the TiO2 powder proved effective for stabilization of the nanophase, as the average grain size was reduced from 110 to 35 and 45 nm, respectively. Electrical measurements indicated selectivity enhancement towards CO and required film preparation to stabilize the film's grain size below 50 nm. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：163 / 166

页数：4

共 11 条

[1] THE DISSOCIATIVE ADSORPTION OF HYDROGEN-SULFIDE OVER NANOPHASE TITANIUM-DIOXIDE [J].