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Gels, Volume 11, Issue 2

February 2025 - 68 articles

Cover Story: Gold nanoparticles (AuNPs) are widely used catalysts, but their recovery is challenging. Here, we describe the synthesis of immobilized AuNP-containing silica aerogels from citrate-stabilized AuNPs and tetramethoxy silane in the presence and absence of the polymeric co-stabilizer poly(vinyl pyrrolidone) (PVP). The absence of PVP resulted in the formation of aggregated bunches of AuNPs, losing most of their catalytic activities. A stepwise high-temperature thermal treatment was applied to the aggregated aerogels, leading to the reformation of active AuNPs inside the aerogel matrix. The morphology and regained catalytic activities of the AuNPs are presented in the paper, confirmed by TEM, SEM, UV-Vis, IR, and porosimetry studies, as well as kinetic measurements of the 4-nitrophenol to 4-aminophenol reduction process. View this paper
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Articles (68)

  • Article
  • Open Access
2 Citations
999 Views
19 Pages

19 February 2025

A physically and chemically cross-linked Al3+-CS/PAM-MBA dual-network gel with enhanced fire-suppression performance was prepared using chitosan (CS), acrylamide (AM), and N,N’-methylenebisacrylamide (MBA) as base materials. The first network w...

  • Article
  • Open Access
5 Citations
2,925 Views
18 Pages

19 February 2025

Wound healing is a complex process involving stages such as hemostasis, inflammation, proliferation, and remodeling. In this context, polymers are useful materials for wound treatment. This research used the Casting method to prepare films from 2% po...

  • Article
  • Open Access
2 Citations
1,402 Views
18 Pages

18 February 2025

The carob tree (Ceratonia siliqua L.) is a defining species of the Mediterranean region, and its fruit, the carob pod, has seen a notable increase in economic interest in recent years, primarily due to the production of locust bean gum (E410), a wide...

  • Article
  • Open Access
1 Citations
1,899 Views
36 Pages

Obtaining and Characterizing Poly(Acid Acrylic–co-Acrylamide) Hydrogels Reinforced with Cellulose Nanocrystals from Acacia farnesiana L. Willd (Huizache)

  • Alejandra B. Navarro-Hermosillo,
  • Gabriel Landázuri-Gómez,
  • J. Félix Armando Soltero-Martínez,
  • Manuel Alberto Gallardo-Sánchez,
  • Jorge Alberto Cortes-Ortega,
  • Carmen López-López,
  • J. Jesus Vargas-Radillo,
  • José Guillermo Torres-Rendón,
  • Gonzalo Canché-Escamilla and
  • Salvador García-Enriquez
  • + 1 author

18 February 2025

In this work, cellulose nanocrystals (CNCs) were obtained from the wood of Acacia farnesiana L. Willd (Huizache) via acid hydrolysis; then, they were used to reinforce polyacrylic acid–co-acrylamide (AAc/AAm) hydrogels synthesized in a solution...

  • Article
  • Open Access
1,403 Views
14 Pages

PVA/Gelatin/Cnidium monnieri Composite Scaffolds for Atopic Dermatitis Skin Tissue Regeneration

  • Young Ho Seo,
  • Sun Young Park,
  • Sangmin Lee,
  • Myunghoo Kim,
  • Seon Beom Kim and
  • Tae Hwan Oh

18 February 2025

Atopic dermatitis (AD) is a chronic inflammatory skin condition characterized by impaired barrier function and persistent inflammation, necessitating advanced therapeutic solutions. This study presents the development of a novel composite hydrogel sc...

  • Review
  • Open Access
6 Citations
4,984 Views
17 Pages

17 February 2025

Surimi-based products are nutritionally valuable due to their essential amino acid composition, their content of high-quality proteins with excellent digestibility, and their low fat content. However, to achieve the desired texture, a significant amo...

  • Article
  • Open Access
3 Citations
1,442 Views
15 Pages

17 February 2025

Injectable recombinant collagen hydrogels (RCHs) are crucial in biomedical applications. Culture conditions play an important role in the preparation of hydrogels. However, determining the characteristics of hydrogels under certain conditions and det...

  • Review
  • Open Access
7 Citations
2,677 Views
25 Pages

Modified Nanocellulose Hydrogels and Applications in Sensing Fields

  • Lan Yang,
  • Qian-Yu Yuan,
  • Ching-Wen Lou,
  • Ting-Ting Li and
  • Jia-Horng Lin

17 February 2025

Due to the intensification of global warming and the greenhouse effect, the exploration and research of sustainable sensors have become a research direction of people. Cellulose-based hydrogels, as a new kind of green material with strong plasticity,...

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Gels - ISSN 2310-2861