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Humidity sensing properties of bismuth phosphates

Sheng, Min; Gu, Leilei; Kontic, Roman; Zhou, Ying; Zheng, Kaibo LU ; Chen, Guorong; Mo, Xiaoliang and Patzke, Greta R. (2012) In Sensors and Actuators B: Chemical 166. p.642-649
Abstract
Cubic sillenite-type and monoclinic bismuth phosphates were synthesized via hydrothermal methods. Structure and morphology of cubic Bi13.1PO delta and monoclinic BiPO4 were characterized with a variety of analytical methods including powder X-ray diffraction, electron microscopy methods and surface area measurements. The humidity sensing properties of both bismuth phosphate types were investigated with respect to their capacitance characteristics. Sillenite-type cubic bismuth phosphate exhibits better response behavior than monoclinic BiPO4. Cubic bismuth phosphate displays a capacitance change of up to 4 orders of magnitude over a relative humidity (RH) range from 11% to 95% together with a linear adsorption/desorption relationship. This... (More)
Cubic sillenite-type and monoclinic bismuth phosphates were synthesized via hydrothermal methods. Structure and morphology of cubic Bi13.1PO delta and monoclinic BiPO4 were characterized with a variety of analytical methods including powder X-ray diffraction, electron microscopy methods and surface area measurements. The humidity sensing properties of both bismuth phosphate types were investigated with respect to their capacitance characteristics. Sillenite-type cubic bismuth phosphate exhibits better response behavior than monoclinic BiPO4. Cubic bismuth phosphate displays a capacitance change of up to 4 orders of magnitude over a relative humidity (RH) range from 11% to 95% together with a linear adsorption/desorption relationship. This promising humidity sensing behavior is related to the presence of a framework structure containing polarizable Bi3+ cations in combination with moderate phosphate doping. (C) 2012 Elsevier B.V. All rights reserved. (Less)
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organization
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Contribution to journal
publication status
published
subject
keywords
Humidity sensors, Bismuth phosphate, Sillenite type, Hydrothermal, synthesis
in
Sensors and Actuators B: Chemical
volume
166
pages
642 - 649
publisher
Elsevier
external identifiers
  • wos:000305356900087
  • scopus:84861188822
ISSN
0925-4005
DOI
10.1016/j.snb.2012.03.030
language
English
LU publication?
yes
id
fe638d25-f0c1-48e7-8b8e-4c8da7dd3585 (old id 2890700)
date added to LUP
2012-07-25 12:07:29
date last changed
2017-10-22 03:59:08
@article{fe638d25-f0c1-48e7-8b8e-4c8da7dd3585,
  abstract     = {Cubic sillenite-type and monoclinic bismuth phosphates were synthesized via hydrothermal methods. Structure and morphology of cubic Bi13.1PO delta and monoclinic BiPO4 were characterized with a variety of analytical methods including powder X-ray diffraction, electron microscopy methods and surface area measurements. The humidity sensing properties of both bismuth phosphate types were investigated with respect to their capacitance characteristics. Sillenite-type cubic bismuth phosphate exhibits better response behavior than monoclinic BiPO4. Cubic bismuth phosphate displays a capacitance change of up to 4 orders of magnitude over a relative humidity (RH) range from 11% to 95% together with a linear adsorption/desorption relationship. This promising humidity sensing behavior is related to the presence of a framework structure containing polarizable Bi3+ cations in combination with moderate phosphate doping. (C) 2012 Elsevier B.V. All rights reserved.},
  author       = {Sheng, Min and Gu, Leilei and Kontic, Roman and Zhou, Ying and Zheng, Kaibo and Chen, Guorong and Mo, Xiaoliang and Patzke, Greta R.},
  issn         = {0925-4005},
  keyword      = {Humidity sensors,Bismuth phosphate,Sillenite type,Hydrothermal,synthesis},
  language     = {eng},
  pages        = {642--649},
  publisher    = {Elsevier},
  series       = {Sensors and Actuators B: Chemical},
  title        = {Humidity sensing properties of bismuth phosphates},
  url          = {http://dx.doi.org/10.1016/j.snb.2012.03.030},
  volume       = {166},
  year         = {2012},
}