Alginate gel beads filled with halloysite nanotubes
Source abstract
Abstract
Abstract Novel hybrid gel beads with a well defined and controlled size formed by alginate biopolymer and halloysite (Hal) nanotubes were designed, prepared and characterized from the physico-chemical viewpoint. The thermogravimetry made it possible to determine the water content, the total as well as the local compositions of Hal into the gel beads. Dielectric spectroscopy evidenced that Hal reduced the fluctuation of ions. The SEM micrographs showed that the dried beads exhibit a rough surface, with pores in the micrometer range. In addition, the concentration of nanotubes was higher into the bead core at a higher overall loading. The performance of these materials was verified with the specific purpose of adsorbing crystal violet from aqueous phase. The alginate gel beads populated by Hal improved their ability to capture the dye so that they can have important implications in the enhancement of controlled adsorptions.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Clay minerals and soil interactions · Therapeutic Uses of Natural Elements · Iron oxide chemistry and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (39)
Show source-provided references
1. Bionanocomposites based on alginate-zein/layered double hydroxide materials as drug delivery systems10.1039/c0jm01211d ↗
2. Novel complex gel beads composed of hydrolyzed polyacrylamide and chitosan: an effective adsorbent for the removal of heavy metal from aqueous solution10.1016/j.biortech.2009.10.069 ↗
3. Films of halloysite nanotubes sandwiched between two layers of biopolymer: from the morphology to the dielectric, thermal, transparency, and wettability properties10.1021/jp207261r ↗
4. Dispersions of nanoclays of different shapes into aqueous and solid biopolymeric matrices. Extended physicochemical study10.1021/la103487a ↗
5. Exploiting the colloidal stability and solubilization ability of clay nanotubes/ionic surfactant hybrid nanomaterials10.1021/jp307961q ↗
6. The anti-inflammatory properties of halloysite10.1016/j.clay.2011.12.001 ↗
7. Acid–base properties of synthetic and natural polyelectrolytes: experimental results and models for the dependence on different aqueous media10.1021/je800518j ↗
8. Adsorption of triblock copolymers and their homopolymers at laponite clay/solution interface. Role played by the copolymer nature10.1039/b510891h ↗
9. Aqueous nonionic copolymer-functionalized laponite clay. A thermodynamic and spectrophotometric study to characterize its behavior toward an organic material10.1021/la061088i ↗
10. The metabolism and mode of action of gentian violet10.3109/03602539009041083 ↗
11. Arsenic removal by a waste metal hydroxide entrapped into calcium alginate beads10.1016/j.jhazmat.2008.08.042 ↗
12. Selectivity of cyclodextrins as a parameter to tune the formation of pseudorotaxanes and micelles supramolecular assemblies. a systematic SANS study10.1039/c1sm05376k ↗
13. Micelles/sodium-alginate composite gel beads: a new matrix for oral drug delivery of indomethacin10.1016/j.carbpol.2011.08.067 ↗
14. Use of naturally occurring halloysite nanotubes for enhanced capture of flowing cells10.1021/la101179y ↗
15. Adsorption studies on the removal of malachite green from aqueous solutions onto halloysite nanotubes
16. Copolymer–cyclodextrin inclusion complexes in water and in the solid state. A physic-chemical study10.1021/jp8034924 ↗
17. Use of coated microtubular halloysite for the sustained release of diltiazem hydrochloride and propranolol hydrochloride10.1016/S0378-5173(02)00702-0 ↗
18. Removal of organic compounds by alginate gel beads with entrapped activated carbon10.1016/j.jhazmat.2005.01.010 ↗
19. Preparation and characterization of silane coupling agent modified halloysite for CrVI removal10.1021/ie200951n ↗
20. Thin film nanofabrication via layer-by-layer adsorption of tubule halloysite, spherical silica, proteins and polycations10.1016/S0927-7757(01)00970-0 ↗
21. Halloysite clay nanotubes for controlled release of protective agents10.1021/nn800259q ↗
22. Dielectric properties of polyelectrolyte solutions10.1146/annurev.pc.35.100184.000451 ↗
23. Dielectric properties of polyelectrolytes. I. A study on tetra-n-butyl ammonium polyacrylate10.1002/bip.1972.360110203 ↗
24. Dielectric properties of poly l glutamic acid in salt free aqueous solutions10.1016/0301-4622(74)80049-9 ↗
25. Sorption of toxic metal ions by solid sorbents: a predictive speciation approach based on complex formation constants in aqueous solution10.1016/j.ccr.2011.09.002 ↗
26. Oosawa · 1971
27. Osada · 2002
28. EPDM/modified halloysite nanocomposites10.1016/j.clay.2010.01.015 ↗
29. Removal of some nitrophenol contaminants using alginate gel beads10.1016/j.colsurfa.2007.06.012 ↗
30. Halloysite nanotubes as biomimetic nanoreactors10.1002/smll.200400120 ↗
31. Active anticorrosion coatings with halloysite nanocontainers10.1021/jp076188r ↗
32. Selective Na+/K+ effects on the formation of α-cyclodextrin complexes with aromatic carboxylic acids: competition for the guest10.1021/jp1063512 ↗
33. New method for simultaneous measurement of frequency spectra of complex dielectric constants of polyelectrolyte solutions10.1016/0301-4622(80)87003-7 ↗
34. Dielectric increment and dielectric dispersion of solutions containing simple charged linear macromolecules. II. Experimental results with synthetic polyelectrolytes10.1016/0301-4622(74)80048-7 ↗
35. Cytocompatibility and uptake of halloysite clay nanotubes10.1021/bm9014446 ↗
36. Preparation and characterization of a novel pH-sensitive chitosan-g-poly acrylic acid/attapulgite/sodium alginate composite hydrogel bead for controlled release of diclofenac sodium10.1016/j.carbpol.2009.06.010 ↗
37. Preparation and swelling properties of pH-sensitive composite hydrogel beads based on chitosan-g-poly acrylic acid/vermiculite and sodium alginate for diclofenac controlled release10.1016/j.ijbiomac.2010.01.009 ↗
38. Preparation and properties of halloysite nanotubes/plasticized Dioscorea opposita Thunb. starch composites10.1016/j.carbpol.2010.07.039 ↗
39. Composite hydrogel beads based on chitosan and laponite: preparation, swelling, and drug release behaviour