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Gels
Special Issues
Colloidal Gels as Micro- and Nanoreactors
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Colloidal Gels as Micro- and Nanoreactors

A special issue of Gels (ISSN 2310-2861).

Deadline for manuscript submissions: closed (29 February 2016) | Viewed by 8082

Special Issue Editor

Prof. Dr. Andrij Pich

E-Mail Website
Guest Editor
1. Lichtenberg Professorship Functional and Interactive Polymers, DWI—Leibniz-Institute for Interactive Materials and RWTH Aachen University, Forckenbeckstraße 50, D-52056 Aachen, Germany
2. Chair for Functional Biobased Polymers, Aachen Maastricht Institute for Biobased Materials (AMIBM), Maastricht University, Brightlands Chemelot Campus, Building 1, Urmonderbaan22, 6167 RD Geleen, The Netherlands
Interests: functional polymers; stimuli-responsive gels; composite materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Colloidal gels exhibit various interesting properties, such as defined size/morphology, porous structure, softness and stimuli-responsiveness. In many cases the important features of colloidal gels are determined by their functionality, that includes internal structure (crosslink density, distribution of the monomer units), morphology (Janus-type, core-shell) and presence of functional groups (reactive groups, charges), in the particle interior or at the surface. The unique combination of the porous open structure of colloidal gels swollen with a particular solvent with high chemical functionality and compartmentalization aspects, makes them extremely efficient micro- or nanoreactors for chemical or biochemical transformations. Colloidal gels can be employed as templates for controlled synthesis of inorganic nanoparticles, such as noble metals, metal oxides or metal carbonates, by precipitation reactions. Polymerization of solubilized monomers in colloidal gels leads to the formation of polymer particles with controlled sizes and shapes. Colloidal gels are perfect switchable carriers for enzymes or synthetic catalyst systems able to operate both in water and organic solvents, providing tunable reactivity and recycling possibility.

Prof. Dr. Andrij Pich
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Gels is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.


Keywords

  • nanogel
  • microgel
  • crosslink density
  • swelling
  • stimuli-responsiveness
  • nanoparticles

Published Papers (1 paper)

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Research

2077 KiB  
Article
Preparation and Characterization of Amphoteric Cellulose Hydrogels as Adsorbents for the Anionic Dyes in Aqueous Solutions
by Hiroyuki Kono
Gels 2015, 1(1), 94-116; https://0-doi-org.brum.beds.ac.uk/10.3390/gels1010094 - 24 Aug 2015
Cited by 33 | Viewed by 7746
Abstract
A series of cellulose ampholytes (CAms), with substitution degrees of cationic groups (DSC) of 0.41, 0.79, and 1.08, and with a substitution degree of anionic groups of 0.68, was prepared from sodium carboxymethylcellulose by a cationization reaction with 2,3-epoxypropyltrimethylammonium chloride. The [...] Read more.
A series of cellulose ampholytes (CAms), with substitution degrees of cationic groups (DSC) of 0.41, 0.79, and 1.08, and with a substitution degree of anionic groups of 0.68, was prepared from sodium carboxymethylcellulose by a cationization reaction with 2,3-epoxypropyltrimethylammonium chloride. The obtained CAms were crosslinked by ethyleneglycoldiglycidylether (EGDE) to obtain cellulose polyampholyte hydrogels (CAmGs). The CAmGs adsorbed three anionic dyes, viz. AR9, AR13, and AB92, and the absorption depended on the DSC of the hydrogels and the pH of the adsorption medium: the maximum adsorption of anionic dyes occurred using CAmGs with higher DSC values, and under lower pH (less than 3) conditions. The adsorption of these dyes can be fitted by the Langmuir adsorption isotherm model, which revealed the maximum flocculation capacity of CAmGs for each dye. These encouraging results indicate that CAmGs may be applicable for use as novel adsorbents for wastewater treatment. Full article
(This article belongs to the Special Issue Colloidal Gels as Micro- and Nanoreactors)
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