We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Artificial Chrysocolla with Catalyst Nanomodified with Copper and Zinc.
- Authors
Silva, Gabriel Bezerra; da Silveira Maranhão, Fabíola; de Souza Jr, Fernando Gomes; Pal, Kaushik; Middea, Antonieta; Lima, Roberto Costa; Machado, Sérgio Lisboa; Feitosa, Samuel Breves Henrique; de Araújo, Karine Velasco; do Nascimento Peçanha, Thiago
- Abstract
Geopolymers are a type of inorganic polymer that typically have a monochromatic appearance. This study investigates the formation of artificial chrysocolla by immersing these materials in Cu(II) ion solutions. The resulting synthetic chrysocolla possesses magnetic properties and characteristic silicate bands in its structure, indicating geopolymerization and a similarity to natural chrysocolla. Furthermore, the inclusion of copper and zinc ferrites in the nano-modified geopolymer matrix enhances its properties and potential antiviral properties. The antiviral test results show that synthetic chrysocolla based on nano-modified geopolymers has a mild antimicrobial effect. However, more testing is needed to determine its effectiveness against bacteriophage, as bacterial growth was observed in the area where the nano-modified geopolymer bacteriophage blend was applied. In addition to its potential antiviral properties, synthetic chrysocolla's porous structure allows it to act as an adsorbent, making it useful in the development of antiviral filters. Artificial chrysocolla can be obtained through a geopolymeric matrix by immersing it in a solution of Cu(II) ions, which can occur by ion exchange of the ions present in the aluminosilicate structure with Cu(II). Neutralization of the geopolymer matrix by washing with distilled water is required prior to immersion to ensure proper formation of chrysocolla and not copper(II) hydroxide on the geopolymer surface. Overall, this study provides evidence for the successful preparation of nano-modified synthetic chrysocolla from geopolymers and ferrites, with properties and chemical composition similar to those of natural chrysocolla. The presence of copper ions in its composition and the incorporation of copper and zinc ferrites can contribute to its use as a resource to combat viral pathogens.
- Subjects
ZINC ferrites; COPPER catalysts; CHEMICAL properties; ZINC; MAGNETIC properties; INORGANIC polymers; COPPER ferrite; COPPER-zinc alloys; COPPER
- Publication
Topics in Catalysis, 2024, Vol 67, Issue 1-4, p86
- ISSN
1022-5528
- Publication type
Article
- DOI
10.1007/s11244-023-01842-3