Synthesis of biohybrid magnetic chitosan-polyvinyl alcohol/MgO nanocomposite blend for remazol brilliant blue R dye adsorption: solo and collective parametric optimization
In this work, a new quadruple nanocomposite of chitosan/polyvinyl alcohol/magnesium oxide/Fe 3 O 4 (Chit-PVA/MgO/Fe 3 O 4 ) was prepared for the adsorption of remazol brilliant blue R (RBBR) dye in batch process. Several advanced analytical techniques including BET, XRD, FTIR, SEM–EDX, potentiometri...
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Veröffentlicht in: | Polymer bulletin (Berlin, Germany) Germany), 2023-05, Vol.80 (5), p.4927-4947 |
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Sprache: | eng |
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Zusammenfassung: | In this work, a new quadruple nanocomposite of chitosan/polyvinyl alcohol/magnesium oxide/Fe
3
O
4
(Chit-PVA/MgO/Fe
3
O
4
) was prepared for the adsorption of remazol brilliant blue R (RBBR) dye in batch process. Several advanced analytical techniques including BET, XRD, FTIR, SEM–EDX, potentiometric titrations, and pH
pzc
were performed for characterizing of the synthesized nanocomposite (Chit-PVA/MgO/Fe
3
O
4
). A multi-step experimental design was derived from response surface methodology (RSM) for optimizing the factors affecting RBBR dye adsorption, namely A: dose (0.02–0.1 g), B: pH (4–10), C: temperature (30–60 °C), and time D: (10–60 min). The obtained kinetic data and adsorption isotherm for the studied Chit-PVA/MgO/Fe
3
O
4
-RBBR system followed pseudo-second-order and Langmuir isotherm model, respectively. The maximum adsorption capacity of Chit-PVA/MgO/Fe
3
O
4
toward RBBR was found to be 163.7 mg/g. The adsorption mechanism of RBBR dye by Chit-PVA/MgO/Fe
3
O
4
possibly comprises an electrostatic interaction, hydrogen bonding, n-π interactions, and Yoshida H-bonding. This work reveals that Chit-PVA/MgO/Fe
3
O
4
nanocomposite is an efficient and recoverable biohybrid adsorbent with a great ability to remove organic dye from an aqueous environment. |
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ISSN: | 0170-0839 1436-2449 |
DOI: | 10.1007/s00289-022-04294-z |