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

Topçu, Cihan; Çağlar, Bülent; Önder, Ahmet; Çoldur, Fatih; Çağlar, Sema; Güner, Eda Keleş; Çubuk, Osman; Tabak, Ahmet Fatih

doi:10.1016/j.materresbull.2017.09.068

Cited by 48 publications

(16 citation statements)

References 80 publications

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“…Also, a chitosan-smectite biocomposite was doped as an electroactive element in a PVC membrane potentiometric sensor for the direct and selective detection of monohydrogen phosphate ions. It exhibited good merits, including high sensitivity and stability, short response time, low detection limit and a broad linear detection range [ 213 ]. A gold phosphate electrode has been coated with polyaniline film and phosphate-doped polyaniline as an ion-selective membrane.…”

Section: Electrochemical Sensor For Water Contaminantsmentioning

confidence: 99%

A Review of Nanocomposite-Modified Electrochemical Sensors for Water Quality Monitoring

Kanoun

Lazarević‐Pašti

Pašti

et al. 2021

Sensors

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Electrochemical sensors play a significant role in detecting chemical ions, molecules, and pathogens in water and other applications. These sensors are sensitive, portable, fast, inexpensive, and suitable for online and in-situ measurements compared to other methods. They can provide the detection for any compound that can undergo certain transformations within a potential window. It enables applications in multiple ion detection, mainly since these sensors are primarily non-specific. In this paper, we provide a survey of electrochemical sensors for the detection of water contaminants, i.e., pesticides, nitrate, nitrite, phosphorus, water hardeners, disinfectant, and other emergent contaminants (phenol, estrogen, gallic acid etc.). We focus on the influence of surface modification of the working electrodes by carbon nanomaterials, metallic nanostructures, imprinted polymers and evaluate the corresponding sensing performance. Especially for pesticides, which are challenging and need special care, we highlight biosensors, such as enzymatic sensors, immunobiosensor, aptasensors, and biomimetic sensors. We discuss the sensors’ overall performance, especially concerning real-sample performance and the capability for actual field application.

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Section: Electrochemical Sensor For Water Contaminantsmentioning

confidence: 99%

A Review of Nanocomposite-Modified Electrochemical Sensors for Water Quality Monitoring

Kanoun

Lazarević‐Pašti

Pašti

et al. 2021

Sensors

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“…The CTS-intercalated AMMT-3 was also prepared via an ion exchange method described by Topcu et al [ 20 ]. 1 g chitosan was slowly added to 100 mL 3% acetic acid aqueous and stirred under 70 °C to protonate amino groups.…”

Section: Methodsmentioning

confidence: 99%

“…The total cation exchange capacity (CEC) of all samples was tested by hexamminecobalt trichloride solution–spectrophotometric method [ 20 ]. Phase composition of samples was analyzed using XRD on a Bruker Advance 8 (Karlsruhe, Germany) diffractometer.…”

Section: Methodsmentioning

confidence: 99%

Simultaneous Detoxification of Aflatoxin B1, Zearalenone and Deoxynivalenol by Modified Montmorillonites

Mao

Zhou

et al. 2022

Molecules

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Raw Ca-based montmorillonite (MMT) was treated by H2SO4, calcination and organic compounds (hexadecyltrimethyl ammonium bromide (HTAB), cetylpyridinium chloride (CPC) and chitosan (CTS)), respectively. The modified montmorillonites were characterized by different methods and their adsorption performances for three mycotoxins (Aflatoxin B1 (AFB1), zearalenone (ZEA) and deoxynivalenol (DON)) were evaluated at pH = 2.8 and 8.0, respectively. The results indicate that surfactants (CPC and HTAB) intercalation is the most efficient modification, which obviously improves the adsorption performance of montmorillonite for mycotoxins, with adsorption efficiency of above 90% for AFB1 and ZEA whether under acid or alkaline conditions, due to the increase in basal spacing and the improvement of hydrophobicity. Moreover, the adsorption efficiencies of AFB1 and ZEA over CPC-modified montmorillonite (CPC-AMMT-3) coexisting with vitamin B6 or lysine are still at a high level (all above 94%). All modified montmorillonites, however, have low adsorption efficiency for DON, with somewhat spherical molecular geometry.

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“…It shows antimicrobial activity against a broad range of microbes including fungi, algae, and numerous bacteria, commonly oral cavity pathogens, Porphyromonas gingivalis, Aggregatibacter actinomycetemcomitans. The antimicrobial exploit is influenced via the kind of chitosan, the degree of deacetylation, the molecular weight, pH, and the nature of bacteria (Rovina and Siddiquee 2016;Topcu et al 2018).…”

Section: Chitosan: Electrochemical Sensing Materialsmentioning

confidence: 99%

Polymer-Based Biomaterials: An Emerging Electrochemical Sensor

Pandey

Jain

2020

Handbook of Polymer and Ceramic Nanotechnology

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Driven by the increasing interest in nanotechnology, materials that spontaneously form ordered nanostructures are becoming an important area of investigation. The development of new polymer-based biomaterials relies on knowledge of the underlying relations between the properties and the structure of these materials at multiple length scales. On the basis of sources, biomaterial polymer films are categorized into two different classes. In the first class, polymers are made from protein, natural rubber, cellulose, etc. these are also called natural polymers. The second category is largest one; it carries the artificial polymer or synthesized polymer, where natural polymers are chemically treated or synthesized in lab. Among these, chitosan is widely used linear polysaccharide biopolymer derived from chitin by deacetylation, chitosan has numerous advantages as a biomaterial; Chitosan is a unique biopolymer in the respect that it is abundant, cationic, lowtoxic, non-immunogenic, biodegradable, and due to its positive charges at

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

Cited by 48 publications

References 80 publications

A Review of Nanocomposite-Modified Electrochemical Sensors for Water Quality Monitoring

A Review of Nanocomposite-Modified Electrochemical Sensors for Water Quality Monitoring

Simultaneous Detoxification of Aflatoxin B1, Zearalenone and Deoxynivalenol by Modified Montmorillonites

Polymer-Based Biomaterials: An Emerging Electrochemical Sensor

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