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20 Results Found

  • Article
  • Open Access
676 Views
19 Pages

Global warming has intensified water scarcity, while excessive fertilizer use has caused soil acidification and limited nutrient availability. This study investigated the effects of biochar and chitosan xerogel on water spinach (Ipomoea aquatica Fors...

  • Article
  • Open Access
8 Citations
3,307 Views
9 Pages

28 October 2019

Gels are usually not environment-friendly due to their difficult biodegradability. Therefore, the addition of chitosan, even in small amounts, will make such gels biodegradable and thus can be useful in many applications that require environment-frie...

  • Article
  • Open Access
2 Citations
3,201 Views
11 Pages

22 November 2019

Hybrid chitosan-resorcinol/formaldehyde xerogels were synthesized, and the effect of including minor quantities of chitosan on the consequent activated carbon was investigated. The resulting activated carbon were characterized by different techniques...

  • Article
  • Open Access
17 Citations
3,206 Views
20 Pages

Chitosan-Silica Hybrid Biomaterials for Bone Tissue Engineering: A Comparative Study of Xerogels and Aerogels

  • Antonio Pérez-Moreno,
  • Manuel Piñero,
  • Rafael Fernández-Montesinos,
  • Gonzalo Pinaglia-Tobaruela,
  • María V. Reyes-Peces,
  • María del Mar Mesa-Díaz,
  • José Ignacio Vilches-Pérez,
  • Luis Esquivias,
  • Nicolás de la Rosa-Fox and
  • Mercedes Salido

5 May 2023

Chitosan (CS) is a natural biopolymer that shows promise as a biomaterial for bone-tissue regeneration. However, because of their limited ability to induce cell differentiation and high degradation rate, among other drawbacks associated with its use,...

  • Article
  • Open Access
16 Citations
3,530 Views
28 Pages

Effect of Washing Treatment on the Textural Properties and Bioactivity of Silica/Chitosan/TCP Xerogels for Bone Regeneration

  • Antonio Pérez-Moreno,
  • María Virtudes Reyes-Peces,
  • José Ignacio Vilches-Pérez,
  • Rafael Fernández-Montesinos,
  • Gonzalo Pinaglia-Tobaruela,
  • Mercedes Salido,
  • Nicolás de la Rosa-Fox and
  • Manuel Piñero

Silica/biopolymer hydrogel-based materials constitute very attractive platforms for various emerging biomedical applications, particularly for bone repair. The incorporation of calcium phosphates in the hybrid network allows for designing implants wi...

  • Article
  • Open Access
13 Citations
2,945 Views
15 Pages

Evaluating Non-Conventional Chitosan Sources for Controlled Release of Risperidone

  • Sara Garcinuño,
  • Inmaculada Aranaz,
  • Concepción Civera,
  • Concepción Arias and
  • Niuris Acosta

26 March 2022

In this work, two chitosan samples from cuttlebone and squid pen are produced and characterized. We studied the formation of thermoresponsive hydrogels with β-glycerol phosphate and found proper formulations that form the hydrogels at 37 °C....

  • Article
  • Open Access
3 Citations
2,949 Views
15 Pages

Chitosan, alginate, and chitosan–alginate (50:50) mixed hydrogels were prepared by freeze casting, freeze-drying, and subsequent physical cross-linking. Chitosan was cross-linked with citrate and alginate with calcium ions, while the mixed gels...

  • Article
  • Open Access
15 Citations
3,370 Views
16 Pages

Fabrication of Poly(vinyl alcohol)/Chitosan Composite Films Strengthened with Titanium Dioxide and Polyphosphonate Additives for Packaging Applications

  • Tăchiță Vlad-Bubulac,
  • Corneliu Hamciuc,
  • Cristina Mihaela Rîmbu,
  • Magdalena Aflori,
  • Maria Butnaru,
  • Alin Alexandru Enache and
  • Diana Serbezeanu

28 July 2022

Eco-innovation through the development of intelligent materials for food packaging is evolving, and it still has huge potential to improve food product safety, quality, and control. The design of such materials by the combination of biodegradable sem...

  • Article
  • Open Access
1 Citations
1,624 Views
17 Pages

20 December 2023

The present study reported the obtention of xerogels based on chitosan and citral and their use as materials for mercury ion recovery from aqueous solutions, this being a serious problem related to the environment. The systems were prepared by the ac...

  • Article
  • Open Access
2 Citations
2,094 Views
16 Pages

Use of Chitosan–Iron Oxide Gels for the Removal of Cd2+ Ions from Aqueous Solutions

  • Eduardo Mendizábal,
  • Nely Ríos-Donato,
  • Minerva Guadalupe Ventura-Muñoz,
  • Rosaura Hernández-Montelongo and
  • Ilse Paulina Verduzco-Navarro

30 September 2024

High-quality water availability is substantial for sustaining life, so its contamination presents a serious problem that has been the focus of several studies. The presence of heavy metals, such as cadmium, is frequently studied due to the increase i...

  • Article
  • Open Access
1 Citations
2,010 Views
11 Pages

Graphene Xerogel for Drug Release

  • Kyriaki Kalyva,
  • Katerina Michalarou,
  • Moch Izzul Haq Al Maruf and
  • Vasilios I. Georgakilas

28 November 2024

By functionalizing reduced graphene oxide with polydopamine, the production of a two-dimensional hydrophilicplatform with hydrophobic areas, suitable for the stabilization and slow and controlled release of hydrophilic and hydrophobic drugs, was real...

  • Article
  • Open Access
10 Citations
2,087 Views
18 Pages

Acoustic Fractional Propagation in Terms of Porous Xerogel and Fractal Parameters

  • Maria-Alexandra Paun,
  • Vladimir-Alexandru Paun and
  • Viorel-Puiu Paun

22 January 2024

This article portrays solid xerogel-type materials, based on chitosan, TEGylated phenothiazine, and TEG (tri-ethylene glycol), dotted with a large number of pores, that are effectively represented in their constitutive structure. They were assumed to...

  • Article
  • Open Access
1 Citations
1,726 Views
21 Pages

Expanded Perlite-Reinforced Alginate Xerogels: A Chemical Approach to Sustainable Building and Packaging Materials

  • Radmila Damjanović,
  • Marija M. Vuksanović,
  • Miloš Petrović,
  • Željko Radovanović,
  • Milena Stavrić,
  • Radmila Jančić Heinemann and
  • Irena Živković

29 November 2024

In sustainable construction and packaging, the development of novel bio-based materials is crucial, driving a re-evaluation of traditional components. Lightweight, biodegradable materials, including xerogels, have great potential in architectural and...

  • Article
  • Open Access
35 Citations
8,290 Views
15 Pages

Sorption of Cu(II) Ions on Chitosan-Zeolite X Composites: Impact of Gelling and Drying Conditions

  • Amal Djelad,
  • Amine Morsli,
  • Mike Robitzer,
  • Abdelkader Bengueddach,
  • Francesco Di Renzo and
  • Françoise Quignard

19 January 2016

Chitosan-zeolite Na-X composite beads with open porosity and different zeolite contents were prepared by an encapsulation method. Preparation conditions had to be optimised in order to stabilize the zeolite network during the polysaccharide gelling p...

  • Article
  • Open Access
3 Citations
1,705 Views
19 Pages

Fractal Analysis of Four Xerogels Based on TEGylated Phenothiazine and Chitosan

  • Maria-Alexandra Paun,
  • Mihai-Virgil Nichita,
  • Vladimir-Alexandru Paun and
  • Viorel-Puiu Paun

25 May 2023

The present article describes novel massive materials (in the solid phase) based on TEGylated phenothiazine and chitosan that possess great capability to recover mercury ions from constituent aqueous solutions. These were produced by chitosan hydroge...

  • Article
  • Open Access
2 Citations
2,684 Views
19 Pages

4 February 2023

The aim of this work was to investigate the ability of a solid-state material, prepared by crosslinking chitosan with a phenothiazine-based aldehyde, to remove copper (II) ions from aqueous solutions, in a fast and selective manner. The metal uptake...

  • Article
  • Open Access
2 Citations
1,437 Views
19 Pages

18 August 2023

This study describes novel solid substances founded on chitosan and TEGylated phenothiazine that have a high ability for hydrargyrum recovery from watery liquid solutions. These compounds were taken into account, consisting of two distinct entity int...

  • Feature Paper
  • Article
  • Open Access
10 Citations
3,224 Views
16 Pages

Carbon Xerogel Nanostructures with Integrated Bi and Fe Components for Hydrogen Peroxide and Heavy Metal Detection

  • Carmen I. Fort,
  • Mihai M. Rusu,
  • Liviu C. Cotet,
  • Adriana Vulpoi,
  • Ileana Florea,
  • Sandrine Tuseau-Nenez,
  • Monica Baia,
  • Mihaela Baibarac and
  • Lucian Baia

29 December 2020

Multifunctional Bi- and Fe-modified carbon xerogel composites (CXBiFe), with different Fe concentrations, were obtained by a resorcinol–formaldehyde sol–gel method, followed by drying in ambient conditions and pyrolysis treatment. The mor...

  • Article
  • Open Access
8 Citations
2,174 Views
18 Pages

31 October 2023

Multifunctional materials based on carbon xerogel (CX) with embedded bismuth (Bi) and iron (Fe) nanoparticles are tested for ultrasensitive amperometric detection of lead cation (Pb2+) and hydrogen peroxide (H2O2). The prepared CXBiFe-T nanocomposite...

  • Article
  • Open Access
6 Citations
2,251 Views
18 Pages

12 December 2022

Four medicament delivery formulations based on 5-fluorouracil in a chitosan substantial matrix were realized in situ via 3,7-dimethyl-2,6-octadienal element hydrogelation. Representative samples of the final realized compounds were investigated from...