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Eco-friendly methods of metallic nanoparticles synthesis for application in evaluating soybean plants growth in the presence of the nanoparticles

Grant number: 22/02893-1
Support Opportunities:Scholarships in Brazil - Post-Doctoral
Effective date (Start): June 01, 2022
Effective date (End): May 31, 2024
Field of knowledge:Physical Sciences and Mathematics - Chemistry - Inorganic Chemistry
Principal Investigator:Marco Aurelio Zezzi Arruda
Grantee:Anerise de Barros
Host Institution: Instituto de Química (IQ). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
Associated research grant:18/25207-0 - Nanometallomics applied to soybean cultivation for studying the effects of metal-related nanoparticles, AP.TEM


This project aims to synthesize nanoparticles with highly controlled size, morphology and aspect ratio. These nanoparticles will be used to evaluate biological effects on soy plants through metallomic and omics platforms. The two main synthetic routes that will be used in this proposal are metallic silver and copper nanoparticles and, the major challenge of this project is the synthesis of these nanoparticles on a large scale with high chemical stability, i.e., that there is no degradation or oxidation of them over time. In addition, one of the requirements for this application is to establish environmentally friendly synthetic routes, which do not cause biological and environmental damage, impairing plant development, as well as, correlation on the actual effect of the nanoparticles' action. Regarding the synthesis, methods described by AbdElkareem will be employed and optimized for the scale-up in the synthesis of copper nanoparticles. In this regard, the stepwise process for the synthesis will preferably be conducted by continuous flow. Initially, we will use particles with spherical morphology, since, these allow better morphological control and a narrow size distribution. In addition to metallic nanoparticles, the proposal also includes obtaining silica nanoparticles, whose methodology is already established in the group (protocol described in patent BR201105171-A2 [24 - project]). However, new investigations will be carried out in this methodology as the possibility of using the colloidal dispersion, before spray drying. For this, we will have to control the pH with keeping the colloidal dispersion compatible with the appropriate planting conditions. In addition, silica nanoparticles are excellent cation exchangers. Thus, silica nanoparticles containing metal cations - such as Ag+ - can also be prepared and employed in plant cultivation. All synthesized nanoparticles are characterized by Transmission Electron Microscopy (HRTEM) and particle size distribution by Dynamic Light Scattering (DLS). The metallic nanoparticles will also be characterized by UV-Vis for Localized Surface Plasmon Resonance (LSPR) band determination. The concentration of the nanoparticles will be determined by atomic absorption. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
SHIMIZU, FLAVIO M.; DE BARROS, ANERISE; BRAUNGER, MARIA L.; GAAL, GABRIEL; RIUL, ANTONIO. Information visualization and machine learning driven methods for impedimetric biosensing. TRAC-TRENDS IN ANALYTICAL CHEMISTRY, v. 165, p. 17-pg., . (22/02893-1)
SOUSA, GESIANE P.; DE BARROS, ANERISE; SHIMIZU, FLAVIO M.; SIGOLI, FERNANDO A.; MAZALI, ITALO O.. Plasmonic Photocatalysis Driven by Indirect Gold Excitation Via Upconversion Nanoparticle Emission Monitored In Situ by Surface- Enhanced Raman Spectroscopy. ACS APPLIED NANO MATERIALS, v. 6, n. 11, p. 13-pg., . (14/50906-9, 21/06326-1, 22/02893-1)

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