Impurity level in SnO2 materials and its impact on gas sensing properties

R. G. Pavelko, M. Yuasa, T. Kida, Kengo Shimanoe, N. Yamazoe

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Using the same protocol for precipitation of tin hydroxide and its hydrothermal treatment (HT), we synthesize SnO2 from three precursors - tin(IV) acetate, tin(IV) hydroxide acetate and tin(IV) chloride pentahydrate. After annealing on sensor substrates the materials were found to be very similar from structural point of view. However, their sensing properties (responses to CO and H2 as a function of humidity) were discovered to be very different, which was related to different impurity level in the samples. High amount of chlorine and potassium (ca. 300 ppmw) in two samples corresponded well to notably high water vapor effect. Differences in surface areas (within 20-60 m2/g) and pore volumes (between 0.11 and 0.19 cm3/g), found for the materials in question, seem to play minor role if the impurities are present.

Original languageEnglish
Pages (from-to)719-725
Number of pages7
JournalSensors and Actuators, B: Chemical
Volume210
DOIs
Publication statusPublished - Jan 1 2015

Fingerprint

Tin
tin
Gases
Impurities
impurities
gases
hydroxides
acetates
Acetates
Chlorine
Steam
Carbon Monoxide
Water vapor
chlorine
Potassium
water vapor
humidity
Chlorides
potassium
Atmospheric humidity

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

Cite this

Impurity level in SnO2 materials and its impact on gas sensing properties. / Pavelko, R. G.; Yuasa, M.; Kida, T.; Shimanoe, Kengo; Yamazoe, N.

In: Sensors and Actuators, B: Chemical, Vol. 210, 01.01.2015, p. 719-725.

Research output: Contribution to journalArticle

Pavelko, R. G. ; Yuasa, M. ; Kida, T. ; Shimanoe, Kengo ; Yamazoe, N. / Impurity level in SnO2 materials and its impact on gas sensing properties. In: Sensors and Actuators, B: Chemical. 2015 ; Vol. 210. pp. 719-725.
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