Investigation of Cellulose and Tin Oxide Hybrid Composite as a Disposable pH Sensor

Title
Investigation of Cellulose and Tin Oxide Hybrid Composite as a Disposable pH Sensor
Authors
김재환
Keywords
Nanocomposites; Coating; pH Sensor; Cellulose; Tin Oxide
Issue Date
2013
Publisher
ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS
Series/Report no.
ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS; vol.227 no.4 startpage 419 endpage 428
Abstract
This paper reports a low cost and disposable pH sensor made with a cellulose and tin oxide hybrid composite. Cellulose- tin oxide hybrid composite was prepared by wet chemical method, which involves immersion of a wet regenerated cellulose film in to a mixture of deionized water and SnF2 (5 mM concentration), maintained at 90 ºC for a given time; 6, 12, 18 and 24 h with stirring. The proposed pH sensor showed a consistent increase of its conductance, and the sensitivity defined as the change of resistance with respect to the pH level portrays three regions with different slope rates depending on the pH value: 0.4 MΩ/pH, 31.2 kΩ/pH and 0.2 MΩ/pH in pH range of 1?4, 4?8 and 8?12, respectively. The high sensitivity at the pH range of 4?8 is very useful for industrial applications. Also, Since the proposed pH sensor is made with cellulose film, it is disposable, cheap and environment-friendly
URI
http://dspace.inha.ac.kr/handle/10505/31452
ISSN
0942-9352
Appears in Collections:
College of Engineering(공과대학) > Mechanical Engineering(기계공학) > Local Access Journal Papers, Reports(기계공학 논문, 보고서)

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