Abstract
Great efforts have been devoted to the invention of environmental sensors as the amount of water pollution has increased in recent decades. Chitosan, cellulose and nanocrystalline cellulose are examples of biopolymers that have been intensively studied due to their potential applications, particularly as sensors. Furthermore, the rapid use of conducting polymer materials as a sensing layer in environmental monitoring has also been developed. Thus, the incorporation of biopolymer and conducting polymer materials with various methods has shown promising potential with sensitively and selectively toward heavy metal ions. In this feature paper, selected recent and updated investigations are reviewed on biopolymer and conducting polymer-based materials in sensors aimed at the detection of heavy metal ions by optical methods. This review intends to provide sufficient evidence of the potential of polymer-based materials as sensing layers, and future outlooks are considered in developing surface plasmon resonance as an excellent and valid sensor for heavy metal ion detection.
Highlights
Living things such as animals, humans and plants required some basic needs such as air, food and water that are clean and adequate for continue survive
Apart from that, conducting polymers such as polyaniline, polypyrrole and polythiophene are promising materials in specific applications. Their electronic conducting, optical and chemical properties have received great attention, due to their unique characteristics such as electrical conductivity, good environmental stability and non-toxicity [25]. These unique polymers can be considered in interdisciplinary science and technology, in actuators, light-emitting diodes (LED), transistors, supercapacitors and optical sensors [26]
It revealed the value of a detection limit was approximately 0.049 μM and it indicated that this sensor has high sensitivity and selectivity towards Hg2+ over other metal ions [52]
Summary
Living things such as animals, humans and plants required some basic needs such as air, food and water that are clean and adequate for continue survive. Biopolymers are an excellent matrix for sensing applications as a promising material in developing a selective and sensitive sensor towards the targeted analytes, heavy metal ions. Apart from that, conducting polymers such as polyaniline, polypyrrole and polythiophene are promising materials in specific applications Their electronic conducting, optical and chemical properties have received great attention, due to their unique characteristics such as electrical conductivity, good environmental stability and non-toxicity [25]. These unique polymers can be considered in interdisciplinary science and technology, in actuators, light-emitting diodes (LED), transistors, supercapacitors and optical sensors [26].
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
