Synthesis, Proton Conductivity and Humidity Sensing Property of γ-Type Zirconium Hydrogen Phosphate, Zr(HPO4)2·2H2O

Chemical Research in Chinese Universities ›› 1999, Vol. 15 ›› Issue (1): 5-9.

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Synthesis, Proton Conductivity and Humidity Sensing Property of γ-Type Zirconium Hydrogen Phosphate, Zr(HPO⁴)²·2H²O

FENG Shou-hua¹, ZHAO Hui¹, LI Lian-sheng¹, Martha Greenblatt²

1. Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130023;
2. Department of Chemistry, Rutgers, the State University of New Jersey, Piscataway, NJ08855, USA

Received:1998-02-25 Online:1999-01-24 Published:2011-08-17
Supported by:
Supported by NSFC and USNSF Through a Soft Chemistry Synthesis Fund and Joint Project.

Abstract

Abstract: A γ type of layered zirconium hydrogen phosphate, Zr(HPO⁴)²·2H²O(γ-ZrP), was synthesized under hydrothermal conditions and characterized by powder X-ray diffraction and thermogravimetric analysis. The temperature dependence of the proton conductivity in γ-ZrP was investigated in a temperature range of 23～413 ℃ by ac impedance spectroscopy. The variation of the conductivity with water loss and phase transitions was observed. The best proton conductivity in γ-ZrP is 6×10^-4 S·cm^-1 at 60 ℃. The proton conductivities in the dehydrated sample are ～10^-5 at 150 ℃ and ～10^-4 S·cm^-1 at 350 ℃, respectively. The conductivities as a function of humidity in the temperature range of 120～200 ℃ were measured.

Key words: Synthesis, γ-Type zirconium hydrogen phosphate, Proton conductivity, Humidity sensing property

FENG Shou-hua, ZHAO Hui, LI Lian-sheng, Martha Greenblatt . Synthesis, Proton Conductivity and Humidity Sensing Property of γ-Type Zirconium Hydrogen Phosphate, Zr(HPO⁴)²·2H²O[J]. Chemical Research in Chinese Universities, 1999, 15(1): 5-9.

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Synthesis, Proton Conductivity and Humidity Sensing Property of γ-Type Zirconium Hydrogen Phosphate, Zr(HPO⁴)²·2H²O

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