Charge transfer at oxygen/zirconia interface at elevated temperatures Part 10: Effect of platinum

Janusz Nowotny; T. Bak; C. C. Sorrell

doi:10.1179/174367605X46849

Charge transfer at oxygen/zirconia interface at elevated temperatures Part 10: Effect of platinum

Janusz Nowotny
, T. Bak
, C. C. Sorrell

University of New South Wales

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

The effect of small Pt particles, present on the surface of yttria-stabilised zirconia (YSZ) 10 mol-%Y₂O₃), on charge transfer at the oxygen/zirconia interface has been studied using work function measurements in the range 873-1173 K. It was found that oxidation of the Pt-YSZ system in air results in the formation of a thin Y_aZr_bPt_cO_d type oxide layer that spreads over the surface of YSZ. The presence of Pt results in a lowering of the surface charge produced by oxygen chemisorption. A model describing the role of Pt and the Y_aZr_b Pt_cO_d type oxide layer in the charge transfer at the triphase boundary formed of oxygen, Pt and YSZ is proposed.

Original language	English
Pages (from-to)	214-222
Number of pages	9
Journal	Advances in Applied Ceramics
Volume	104
Issue number	4
DOIs	https://doi.org/10.1179/174367605X46849
Publication status	Published - Aug 2005
Externally published	Yes

Keywords

Charge transfer
Oxygen chemisorption
Platinum
Triphase boundary
Work function
Yttria-stabilised zirconia

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10.1179/174367605X46849

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title = "Charge transfer at oxygen/zirconia interface at elevated temperatures Part 10: Effect of platinum",

abstract = "The effect of small Pt particles, present on the surface of yttria-stabilised zirconia (YSZ) 10 mol-\%Y2O3), on charge transfer at the oxygen/zirconia interface has been studied using work function measurements in the range 873-1173 K. It was found that oxidation of the Pt-YSZ system in air results in the formation of a thin YaZrbPtcOd type oxide layer that spreads over the surface of YSZ. The presence of Pt results in a lowering of the surface charge produced by oxygen chemisorption. A model describing the role of Pt and the YaZrb PtcOd type oxide layer in the charge transfer at the triphase boundary formed of oxygen, Pt and YSZ is proposed.",

keywords = "Charge transfer, Oxygen chemisorption, Platinum, Triphase boundary, Work function, Yttria-stabilised zirconia",

author = "Janusz Nowotny and T. Bak and Sorrell, \{C. C.\}",

year = "2005",

month = aug,

doi = "10.1179/174367605X46849",

language = "English",

volume = "104",

pages = "214--222",

journal = "Advances in Applied Ceramics",

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publisher = "SAGE Publications Ltd",

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TY - JOUR

T1 - Charge transfer at oxygen/zirconia interface at elevated temperatures Part 10

T2 - Effect of platinum

AU - Nowotny, Janusz

AU - Bak, T.

AU - Sorrell, C. C.

PY - 2005/8

Y1 - 2005/8

N2 - The effect of small Pt particles, present on the surface of yttria-stabilised zirconia (YSZ) 10 mol-%Y2O3), on charge transfer at the oxygen/zirconia interface has been studied using work function measurements in the range 873-1173 K. It was found that oxidation of the Pt-YSZ system in air results in the formation of a thin YaZrbPtcOd type oxide layer that spreads over the surface of YSZ. The presence of Pt results in a lowering of the surface charge produced by oxygen chemisorption. A model describing the role of Pt and the YaZrb PtcOd type oxide layer in the charge transfer at the triphase boundary formed of oxygen, Pt and YSZ is proposed.

AB - The effect of small Pt particles, present on the surface of yttria-stabilised zirconia (YSZ) 10 mol-%Y2O3), on charge transfer at the oxygen/zirconia interface has been studied using work function measurements in the range 873-1173 K. It was found that oxidation of the Pt-YSZ system in air results in the formation of a thin YaZrbPtcOd type oxide layer that spreads over the surface of YSZ. The presence of Pt results in a lowering of the surface charge produced by oxygen chemisorption. A model describing the role of Pt and the YaZrb PtcOd type oxide layer in the charge transfer at the triphase boundary formed of oxygen, Pt and YSZ is proposed.

KW - Charge transfer

KW - Oxygen chemisorption

KW - Platinum

KW - Triphase boundary

KW - Work function

KW - Yttria-stabilised zirconia

UR - https://www.scopus.com/pages/publications/23944467139

U2 - 10.1179/174367605X46849

DO - 10.1179/174367605X46849

M3 - Article

AN - SCOPUS:23944467139

SN - 1743-6753

VL - 104

SP - 214

EP - 222

JO - Advances in Applied Ceramics

JF - Advances in Applied Ceramics

IS - 4

ER -

Charge transfer at oxygen/zirconia interface at elevated temperatures Part 10: Effect of platinum

Abstract

Keywords

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