Structural characterization of chitosan-smectite nanocomposite and its application in the development of a novel potentiometric monohydrogen phosphate-selective sensor

Journal Article · Thu Feb 15 00:00:00 EST 2018 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2017.09.068· OSTI ID:22805380

Topcu, Cihan; Caglar, Bulent; Onder, Ahmet; Coldur, Fatih; Caglar, Sema ^[1]; Guner, Eda Keles ^[2]; Cubuk, Osman ^[1]; Tabak, Ahmet ^[3]

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1. Department of Chemistry, Faculty of Arts and Sciences, Erzincan University, 24100 Erzincan (Turkey)
2. Department of Civil Defence and Firefighting, Uzumlu Vocational School, Erzincan University, 24150 Erzincan (Turkey)
3. Department of Chemistry, Faculty of Arts and Sciences, Sinop University, 57000 Sinop (Turkey)

Highlights: • Protonated chitosan molecules intercalated into the smectite layers as monolayered arrangement. • A novel HPO{sub 4}{sup 2−} selective potentiometric electrode based on the chitosan-smectite nanocomposite was constructed. • Easy to prepare, low-cost, and highly selective potentiometric sensor. - Abstract: Chitosan-smectite biocomposite was prepared by intercalation of protonated chitosan molecules into the interlayer space of smectite in monolayer arrangement through cation exchange mechanism and the obtained biocomposite was successfully used as an electroactive component in the structure of a PVC membrane potentiometric sensor for the direct and highly selective determination of monohydrogen phosphate ions. The comparative elemental, structural, thermal and morphological analysis of starting-smectite, neat chitosan and chitosan-smectite were investigated by utilizing EDX, XRD, ATR-FTIR, TG/DTG/DTA, SEM and surface area measurement techniques. The optimum membrane composition, detection limit, response time, pH working range and repeatability of the proposed electrode were determined.

• OSTI ID: 22805380
• Journal Information: Materials Research Bulletin, Vol. 98; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
AMINO ACIDS
CLATHRATES
DIFFERENTIAL THERMAL ANALYSIS
ELECTRODES
FOURIER TRANSFORM SPECTROMETERS
ION EXCHANGE
MEMBRANES
MOLECULES
NANOCOMPOSITES
PH VALUE
PHOSPHATES
POTENTIOMETRY
PVC
SCANNING ELECTRON MICROSCOPY
SENSITIVITY
SENSORS
SMECTITE
SURFACE AREA
X-RAY DIFFRACTION