ORIGINAL RESEARCH
Preparation of Spin-Coated Poly(vinyl alcohol)/
chitosan/ Gold Nanoparticles Composite
and Its Potential for Colorimetric Detection
of Cyanide in Water
| 1 | Physics Department, Ateneo de Manila University, Quezon City 1101, Philippines |
| 2 | Materials Science and Polymer Chemistry Laboratory, Caraga State University, Butuan City 8600, Philippines |
| 3 | Synthetic Organic Chemistry Research Laboratory, University of the Philippines Diliman,
Quezon City 1101, Philippines |
| 4 | Physics Department, Caraga State University, Butuan City 8600, Philippines |
| 5 | Center for Nanoscience and Technology for Research and Entrepreneurship, Caraga State University,
Butuan City 8600, Philippines |
| 6 | Biology Department, Adamson University, 900 San Marcelino St., Ermita, Manila 1000, Philippines |
| 7 | Physics Department, Mindanao State University-Iligan Institute of Technology, Iligan City 9200, Philippines |
| 8 | Biomedical Research Section, Philippine Nuclear Research Institute, Quezon City 1101, Philippines |
| 9 | Department of Physical Sciences and Mathematics, College of Science and Environment,
Mindanao State University – Naawan Campus, 9023, Misamis Oriental, Philippines |
CORRESPONDING AUTHOR
Rey Yonson Capangpangan
Department of Physical Sciences and Mathematics, College of Science and Environment, Mindanao State University – Naawan Campus, 9023, Misamis Oriental, 9023, Philippines
Department of Physical Sciences and Mathematics, College of Science and Environment, Mindanao State University – Naawan Campus, 9023, Misamis Oriental, 9023, Philippines
Submission date: 2021-05-03
Final revision date: 2021-06-25
Acceptance date: 2021-07-16
Online publication date: 2022-01-18
Publication date: 2022-03-22
Pol. J. Environ. Stud. 2022;31(2):1569–1576
KEYWORDS
cyanidepolyvinyl alcoholchitosangold nanoparticlecompositecolorimetric sensorwater contamination monitoring
TOPICS
ABSTRACT
The rampant use of cyanide in mining activities has posed a substantial hazard to aquatic ecosystems
and human health. Herein, a composite film of poly(vinyl alcohol)/chitosan (PVA/CS) with gold
nanoparticles was synthesized as a potential colorimetric sensor for cyanide ions detection in water. The
utilized AuNPs with a mean diameter of 14.32±3.49 nm were synthesized by chemical reduction using
polyethyleneimine. Ultraviolet-visible spectroscopy revealed the characteristic peak of AuNPs at around
530 nm in the spectrum of PVA/CS/AuNP film, while SEM microscopy revealed the integration AuNPs
across the polymer substrate. A color change from red to colorless was observed on the composite film
after the addition of water samples with cyanide ions with a visual detection limit between 0.1-1 ppm.
The sensor also exhibited good selectivity towards cyanide against the tested water samples containing various metal ions. This study reveals the potential of the fabricated PVA/CS/AuNP composite film as
a simple, affordable, and environmentally benign material for on-site detection of cyanide in water and
other related application.
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