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Role of functional groups in the production of self-assembled microfibrillated cellulose hybrid frameworks and influence on separation mechanisms of dye from aqueous medium
RISE Research Institutes of Sweden, Bioekonomi och hälsa, Bioraffinaderi och energi.
RISE Research Institutes of Sweden, Bioekonomi och hälsa, Bioraffinaderi och energi.
Bundelkhand Institute of Engineering and Technology, India.
2020 (Engelska)Ingår i: International Journal of Biological Macromolecules, ISSN 0141-8130, E-ISSN 1879-0003, Vol. 155, s. 1541-1552Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

In this article, the role of surface ζ-potential, surface charge density of functional groups and available surface functional groups (-OH and –COO−) of microfibrillated cellulose (MFC) was explored in the production of self-assembled dimensional frameworks. Furthermore, 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO) oxidation of MFC and in situ TEMPO functionalization of produced frameworks were performed. The effect of increased charge density of carboxylic groups (-COO−) and decrease in surface ζ-potential on binding of titanium dioxide (TiO2) and horseradish peroxidase (HRP) was investigated further. High binding of TiO2 and HRP was reported due to high density of carboxylic group (-COO-) on produced functional frameworks. Thereafter, a model water of Irgalite Violet NZ dye was targeted to understand the behavior of available functional groups and introduced surface ζ-potential of frameworks towards adsorption of dye. Possible size-exclusion of dye aggregates was also explored using neat-MFC frameworks. Photo-oxidation (TiO2) and enzymatic catalysis (HRP) were studied further and highly effective system towards dye degradation was reported. Lastly, this study has shown a well deliberated quantitative understanding of functional groups/their density responsible for the production of frameworks and separation of dye.

Ort, förlag, år, upplaga, sidor
Elsevier B.V. , 2020. Vol. 155, s. 1541-1552
Nyckelord [en]
Adsorption, Enzyme catalysis, Microfibrillated cellulose, Photocatalysis, Size-exclusion, Surface charge density, 2, 2, 6, 6 tetramethyl 1 piperidinyloxy, cellulose, dye, horseradish peroxidase, microfibrillated cellulose, piperidine, titanium dioxide, unclassified drug, adsorption, aqueous solution, Article, binding affinity, catalysis, controlled study, degradation, hybridization, oxidation, particle size, separation technique, surface property, zeta potential
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Naturvetenskap
Identifikatorer
URN: urn:nbn:se:ri:diva-50123DOI: 10.1016/j.ijbiomac.2019.11.131Scopus ID: 2-s2.0-85085536589OAI: oai:DiVA.org:ri-50123DiVA, id: diva2:1492876
Tillgänglig från: 2020-11-03 Skapad: 2020-11-03 Senast uppdaterad: 2020-12-01Bibliografiskt granskad

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