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Artificial Chrysocolla with Catalyst Nanomodified with Copper and Zinc

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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.

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Data Availability

The data that support the findings of this study are available from the corresponding author upon reasonable request.

Abbreviations

cm:

Centimeter

Co:

Cobalt

COVID:

Coronavirus disease

Cu:

Copper

Cu(I):

Copper (I)

Cu(II):

Copper (II)

DOCTYPE:

Document Type

dox:

Doxorubicin

E. coli :

Escherichia coli

EAB:

Equivalent absorption bandwidth

eab:

Equivalent absorption bandwidth

emi se:

Electromagnetic interference shielding effectiveness

emw:

Electromagnetic wave

Fe:

Iron

FWHM:

Full-width at the half-maximum

GHz:

Gigahertz

hco3:

Bicarbonate

Hz:

Hertz

mg g:

Milligram per gram

Mn:

Manganese

Ni:

Nickel

pb2:

Lead (II)

RIS:

Research Information Systems

rlmin:

Minimum reflection loss

RMSE:

Root mean square error

ROS:

Reactive Oxygen Species

semedx:

Scanning electron microscopy-energy dispersive X-ray spectroscopy

VOSviewer:

Visualization of Similarities Viewer

w h kg:

Watt-hours per kilogram

Zn(II):

Zinc (II)

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Acknowledgements

We thank the Macromolecules Institute Professor Eloisa Mano (IMA) for all the support. We also thank the Center of Mineralogy (CETEM), for the SEM analyses, conducted by Antonieta Middea, the Marine Research Institute (IPqM) by the synthesis of magnetic nanoparticles conducted by Roberto Costa Lima and the Faculty of Pharmacy by the antiviral efficiency tests conducted by Sérgio Lisboa Machado. Besides, this work was supported by Agência Nacional de Petróleo (PRH 16.1), Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq BRICS-STI-5 440090/2022-9 and PQ-2022 302508/2022-8), Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES–Finance Code 001), and Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ E-26/210.800/2021 (Energy), E-26/211.122/2021 (COVID), E-26/210.511/2021 (ConBraPA2022), E-26/201.154/2021 (CNE), and E-26/210.080/2023 (Thematic)).

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Authors and Affiliations

  1. Instituto de Macromoléculas Professora Eloisa Mano, Centro de Tecnologia-Cidade Universitária, Universidade Federal de Rio de Janeiro, Rio de Janeiro, Brazil

    Gabriel Bezerra Silva, Fabíola da Silveira Maranhão, Fernando Gomes de Souza Jr, Samuel Breves Henrique Feitosa, Karine Velasco de Araújo & Thiago do Nascimento Peçanha

  2. Programa de Engenharia da Nanotecnologia, COPPE, Centro de Tecnologia-Cidade Universitária, Universidade Federal Do Rio de Janeiro, Rio de Janeiro, Brazil

    Fernando Gomes de Souza Jr

  3. University Center for Research and Development (UCRD), Department of Physics, Chandigarh University, Ludhiana–Chandigarh State Hwy, Gharuan, Mohali, Punjab, 140413, India

    Kaushik Pal

  4. Centro de Tecnologia Mineral-Cidade Universitária, Universidade Federal Do Rio de Janeiro, Rio de Janeiro, Brazil

    Antonieta Middea

  5. Instituto de Pesquisas da Marinha, Cacuia-Ilha Do Governador, Rio de Janeiro, Brazil

    Roberto Costa Lima

  6. Faculdade de Farmácia, Centro de Ciências da Saúde-Cidade Universitária, Universidade Federal de Rio de Janeiro, Rio de Janeiro, Brazil

    Sérgio Lisboa Machado

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  1. Gabriel Bezerra Silva
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  2. Fabíola da Silveira Maranhão
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Correspondence to Fabíola da Silveira Maranhão or Fernando Gomes de Souza Jr.

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Silva, G.B., da Silveira Maranhão, F., de Souza, F.G. et al. Artificial Chrysocolla with Catalyst Nanomodified with Copper and Zinc. Top Catal 67, 86–102 (2024). https://doi.org/10.1007/s11244-023-01842-3

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