High performance sol-gel synthesized Ce0.9Sr0.1(Zr0.53Ti0.47)O4 sensing membrane for a solid-state pH sensor

Sankar Prasad Bag; Prabir Garu; Jim Long Her; Bih Show Lou; Tung Ming Pan

doi:10.1039/c8ra03628d

High performance sol-gel synthesized Ce_0.9Sr_0.1(Zr_0.53Ti_0.47)O₄ sensing membrane for a solid-state pH sensor

Sankar Prasad Bag, Prabir Garu, Jim Long Her, Bih Show Lou, Tung Ming Pan^*

^*Corresponding author for this work

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

7 Scopus citations

Abstract

In this paper, we developed a high-performance solid-state pH sensor using a Ce_0.9Sr_0.1(Zr_0.53Ti_0.47)O₄ (CSZT) membrane through a very simple sol-gel spin-coating process. The structural properties of the CSZT membrane are correlated with its sensing characteristics. The CSZT based EIS sensor exhibited a high pH sensitivity of 92.48 mV pH^-1, which is beyond the Nernst limit (59.4 mV pH^-1), and good reliability in terms of a low hysteresis voltage of 1 mV and a small drift rate of 0.15 mV h^-1. This behaviour is attributed to the incorporation of Sr in the CSZT sensing membrane, which promotes change in the Ce oxidation state from Ce⁴⁺ to Ce³⁺.

Original language	English
Pages (from-to)	21210-21213
Number of pages	4
Journal	RSC Advances
Volume	8
Issue number	38
DOIs	https://doi.org/10.1039/c8ra03628d
State	Published - 2018

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© The Royal Society of Chemistry 2018.

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title = "High performance sol-gel synthesized Ce0.9Sr0.1(Zr0.53Ti0.47)O4 sensing membrane for a solid-state pH sensor",

abstract = "In this paper, we developed a high-performance solid-state pH sensor using a Ce0.9Sr0.1(Zr0.53Ti0.47)O4 (CSZT) membrane through a very simple sol-gel spin-coating process. The structural properties of the CSZT membrane are correlated with its sensing characteristics. The CSZT based EIS sensor exhibited a high pH sensitivity of 92.48 mV pH-1, which is beyond the Nernst limit (59.4 mV pH-1), and good reliability in terms of a low hysteresis voltage of 1 mV and a small drift rate of 0.15 mV h-1. This behaviour is attributed to the incorporation of Sr in the CSZT sensing membrane, which promotes change in the Ce oxidation state from Ce4+ to Ce3+.",

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AU - Garu, Prabir

AU - Her, Jim Long

AU - Lou, Bih Show

AU - Pan, Tung Ming

PY - 2018

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AB - In this paper, we developed a high-performance solid-state pH sensor using a Ce0.9Sr0.1(Zr0.53Ti0.47)O4 (CSZT) membrane through a very simple sol-gel spin-coating process. The structural properties of the CSZT membrane are correlated with its sensing characteristics. The CSZT based EIS sensor exhibited a high pH sensitivity of 92.48 mV pH-1, which is beyond the Nernst limit (59.4 mV pH-1), and good reliability in terms of a low hysteresis voltage of 1 mV and a small drift rate of 0.15 mV h-1. This behaviour is attributed to the incorporation of Sr in the CSZT sensing membrane, which promotes change in the Ce oxidation state from Ce4+ to Ce3+.

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High performance sol-gel synthesized Ce_0.9Sr_0.1(Zr_0.53Ti_0.47)O₄ sensing membrane for a solid-state pH sensor

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