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osu1221839212.pdf (5.82 MB)
ETD Abstract Container
Abstract Header
Li
+
/H
+
Ion-exchanged Li
2
M
O
3
(
M
= Ir, Pt) and Carbonate Melt Oxidized IrO
x
p
H
Sensors
Author Info
O'Malley, Matthew J.
Permalink:
http://rave.ohiolink.edu/etdc/view?acc_num=osu1221839212
Abstract Details
Year and Degree
2008, Master of Science, Ohio State University, Materials Science and Engineering.
Abstract
Analyses and characterizations of Li
+
/H
+
ion-exchanged Li
2
M
O
3
(
M
= Ir, Pt) and carbonate melt oxidized IrO
x
p
H
sensors are presented and discussed. The resulting structures produced during Li
+
/H
+
ion-exchange for Li
2
IrO
3
and Li
2
PtO
3
powders as well as carbonate melt oxidized Ir and Pt wires (0.25 mm dia.) are characterized and tested using XRD, SEM, TEM, and TGA. The protonation results in the formation of HIr
2/3+x
Li
1/3-x
O
2
, of the HCrO
2
structure type. The LiM
2
layers shift due to hydrogen bonding between successive layers, which is absent in the Li
2
MO
3
parent structures. HIr
2/3+x
Li
1/3-x
O
2
is observed in both the powder and the melt oxidized wire, with preferred orientation observed in the needle-like surface under particular melt oxidation conditions. The
p
H
responses of the iridium oxide and platinum oxide electrodes produced using a new synthetic method are presented. The stability and reproducibility of the electrodes are good, with minimal inference from Li
+
and K
+
.
Committee
Henk Verweij, PhD (Advisor)
Patricia Morris, PhD (Committee Member)
Pages
99 p.
Subject Headings
Materials Science
Keywords
pH sensors
;
metal oxides
;
IrO
x
;
Li
2
IrO
3
;
Li
2
PtO
3
Recommended Citations
Refworks
EndNote
RIS
Mendeley
Citations
O'Malley, M. J. (2008).
Li
+
/H
+
Ion-exchanged Li
2
M
O
3
(
M
= Ir, Pt) and Carbonate Melt Oxidized IrO
x
p
H
Sensors
[Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1221839212
APA Style (7th edition)
O'Malley, Matthew.
Li
+
/H
+
Ion-exchanged Li
2
M
O
3
(
M
= Ir, Pt) and Carbonate Melt Oxidized IrO
x
p
H
Sensors.
2008. Ohio State University, Master's thesis.
OhioLINK Electronic Theses and Dissertations Center
, http://rave.ohiolink.edu/etdc/view?acc_num=osu1221839212.
MLA Style (8th edition)
O'Malley, Matthew. "Li
+
/H
+
Ion-exchanged Li
2
M
O
3
(
M
= Ir, Pt) and Carbonate Melt Oxidized IrO
x
p
H
Sensors." Master's thesis, Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1221839212
Chicago Manual of Style (17th edition)
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Document number:
osu1221839212
Download Count:
1,039
Copyright Info
© 2008, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.