Synthesis and characterization of crosslinked chitosan immobilized on bentonite and its grafted products with polyaniline

El-Dib, Fawzia I.; Hussein, Mohammed H. M.; Hefni, Hassan H.H.; Eshaq, Ghada; ElMetwally, Ahmed E.

doi:10.1002/app.41078

Cited by 12 publications

(5 citation statements)

References 29 publications

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“…The spectrum of chitosan showed a band at 1602 cm À1 for -NH 2 bending. [13][14][15][16][17][18][19] The spectrum showed a band at 1260 cm À1 that could be attributed to the saccharide structure. 20 The absorption band at 1156 cm À1 was assigned to the anti-symmetric stretching of C-O-C bridges, with C-O stretching vibrations present at 1066 cm À1 .…”

Section: Characterization Of Pani/cts Inhibitormentioning

confidence: 99%

Polyaniline/chitosan as a corrosion inhibitor for mild steel in acidic medium

Kong

Chen

et al. 2019

RSC Adv.

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Section: Characterization Of Pani/cts Inhibitormentioning

confidence: 99%

Polyaniline/chitosan as a corrosion inhibitor for mild steel in acidic medium

Kong

Chen

et al. 2019

RSC Adv.

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“…3a) is shifted to lower frequency of 3422 cm −1 in case of BT-CS nanocomposite (Fig. 3c) suggesting interfacial interaction between CS and BT surface [45,46]. However, as compared to the spectra of pristine CS (Fig.…”

Section: The Bt-cs Nanocomposite Characterizationmentioning

confidence: 99%

Adsorptive performance of bentonite-chitosan nanocomposite as a dual antibacterial and reusable adsorbent for Reactive Red 195 and crystal violet removal: kinetic and thermodynamic studies

Elashery,

El-Bouraie,

Abdelgawad

et al. 2023

Biomass Conv. Bioref.

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Herein, bentonite-chitosan nanocomposite (BT-CS nanocomposite) has been synthesized and exploited, for the first time, as a dual adsorbent for the removal of both of an anionic (Reactive Red 195 (RR)) and a cationic (Crystal Violet (CV)) dyes from aqueous solution. The adsorption behavior of the exploited nano-adsorbent towards the dyes under investigation were scrutinized in batch experiments as a function of several factors such as contact time, pH value, adsorbent dose, initial dye concentration, stirring rate, and temperature. The prepared nano-adsorbent achieved superior removal efficiency of 99.4 and 99.8% within 20 min at optimum pH value of 3 and 5 using adsorbent dose of 0.1 g and 0.08 g at room temperature for RR and CV dyes, respectively. Also, the developed nano-adsorbent affords higher removal efficiency of CV dye against broad pH range of 2–9. Moreover, the developed nano-adsorbent achieved significant antibacterial behavior against various pathogenic bacterial and record clear inhibition zone of 21 mm against Escherichia coli (ATCC 8739). Langmuir adsorption model and pseudo-second order adsorption can fully depict the BT-CS nanocomposite adsorption properties for both of RR and CV dyes. Furthermore, thermodynamic studies showed that the process was spontaneous and endothermic with increased in randomness. The prepared dual adsorbent in this study exhibited reversible dyes adsorption with an excellent regeneration efficiency. Whereas, after 5 successive adsorption–desorption cycles, the adsorption efficiency of the synthesized adsorbent was 99% and 98% for RR and CV dyes, respectively, affirming its capability to economically decontaminate the industrial wastewater comprising RR and CV dyes. Graphical Abstract

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“…This distortion leads to a decrease in its crystallinity, thereby causing a decrease in the peak intensity. 51,52 The amorphous nature of P(VP-Acn-Acr) also increases the grinding ability and dispersibility of the polymer, hence making it the most deserving candidate to be used as the adhesive.…”

Section: X-ray Diffraction (Xrd)mentioning

confidence: 99%