24 documents found, page 1 of 3
Progress in Nanofluid Technology: From Conventional to Green Nanofluids for Bio...
Cardoso, Beatriz D.; Souza, Andrews; Nobrega, Glauco; Afonso, Inês Santos; Neves, Lucas Boniatti; Faria, Carlos; Ribeiro, J.E.; Lima, Rui A.Nanofluids (NFs), consisting of nanoparticles (NPs) suspended in base fluids, have attracted growing interest due to their superior physicochemical properties and multifunctional potential. In this review, conventional and green NF technology aspects, including synthesis routes, formulation, and applications, are discussed. Conventional NFs, involving NPs synthesized using physical and chemical approaches, have...
Potential of magnetic silver-coupled zinc and copper ferrite nanoparticles as v...
Fernandes, Ricardo Jorge Cunha; Cardoso, Beatriz D.; Silva, A. R.; Pereira, Luciana; Coutinho, Paulo J. G.Increased environmental concerns about water pollution and scarcity have driven the development of innovative processes and technologies to address these issues. Photocatalysis using nanomaterials is auspicious, with proven efficiency in degrading different pollutants. Ferrite nanoparticles (MFe2O4) stand out for their dual functionality, photocatalytic activity and potential superparamagnetic behavior, that ma...
Potential of photocatalytic nanomaterials for PFOA and PFOS degradation: challe...
Fernandes, Ricardo Jorge Cunha; Silva, Ana Rita Pereira; Cardoso, Beatriz D.; Coutinho, Paulo J. G.; Pereira, LucianaPer- and polyfluoroalkyl substances (PFAS) are persistent chemicals that pose significant environmental and health risks due to their widespread presence in water systems and their accumulation in the human body. Their strong carbon-fluorine bonds provide exceptional structural stability, making them extremely recalcitrant to conventional degradation processes. PFAS exposure has been linked to health issues inc...
Exploring heat exchange in space: Recent advances in two-phase fluid experiment...
Nobrega, Glauco Tapijara Vallicelli; Afonso, Inês Santos; Cardoso, Beatriz D.; Souza, Reinaldo Rodrigues de; Moita, Ana S.; Ribeiro, J.E.; Lima, Rui A.Thermal regulation has assumed a central role in space expeditions ever since the inception of Sputnik-1 in 1957. Throughout the years, numerous techniques have been developed to regulate temperatures in spacecraft and space habitats. Initially, passive systems like heat shields and thermal linings were employed, while newer missions embrace active cooling using fluids like ammonia and water. With significant a...
A Review of Novel Heat Transfer Materials and Fluids for Aerospace Applications
Nobrega, Glauco Tapijara Vallicelli; Cardoso, Beatriz D.; Souza, Reinaldo Rodrigues de; Pereira, José Eduardo; Pontes, Pedro; Catarino, Susana O.The issue of thermal control for space missions has been critical since the early space missions in the late 1950s. The demands in such environments are heightened, characterized by significant temperature variations and the need to manage substantial densities of heat. The current work offers a comprehensive survey of the innovative materials and thermal fluids employed in the aerospace technological area. In ...
Experimental evaluation of green nanofluids in heat exchanger made oF PDMS
Nobrega, Glauco Tapijara Vallicelli; Souza, Reinaldo Rodrigues de; Cardoso, Beatriz D.; Afonso, Inês Santos; Pereira, José Eduardo; Cardoso, ElaineConventional methods for synthesizing metallic nanoparticles face challenges such as instability and environmental concerns. Therefore, new, simpler, and more eco-friendly methods are being explored. In this context, the study reports a green synthesis process to produce magnetic iron oxide nanoparticles using an aqueous extract of the alga Chlorella vulgaris. This process leverages natural resources to create ...
Green synthesis of nanoparticles from olive oil waste for environmental and hea...
Afonso, Inês Santos; Cardoso, Beatriz D.; Nobrega, Glauco Tapijara Vallicelli; Minas, Graça; Ribeiro, J.E.; Lima, Rui A.Environmental degradation is a growing concern, driving researchers to explore eco-friendly nanoparticle (NP) synthesis, for diverse applications. Within this context, the employment of olive oil waste (OOW) as a green source for the synthesis of NPs has emerged as a viable alternative to conventional techniques. The olive industry has a significant impact in the Mediterranean region, and alongside it, comes th...
Experimental Investigation of Green Nanofluids: Assessment of Wettability, Visc...
Nobrega, Glauco; Cardoso, Beatriz D.; Barbosa, Filipe; Pinho, Diana; Abreu, Cristiano; Souza, Reinaldo Rodrigues de; Moita, Ana S.; Ribeiro, J.E.Metallic nanoparticles are a type of nanomaterial synthesized from metallic precursors. Due to their unique physiochemical, electrical, and optical properties, metallic nanoparticles are widely studied and applied in various areas such as medicine, electronics, and heat transfer systems. However, conventional synthesis methods to produce metallic nanoparticles face challenges such as instability and environment...
Zinc/magnesium ferrite nanoparticles functionalized with silver for optimized p...
Fernandes, Ricardo Jorge Cunha; Cardoso, Beatriz D.; Rodrigues, Ana Rita Oliveira; Pires, Ana; Pereira, André M.; Araújo, João P.; Pereira, LucianaWater pollution is a major environmental challenge. Due to the inefficiency of conventional wastewater treatment plants in degrading many organic complex compounds, these recalcitrant pollutants end up in rivers, lakes, oceans and other bodies of water, affecting the environment and human health. Semiconductor photocatalysis is considered an efficient complement to conventional methods, and the use of various n...
Development of pH-Sensitive magnetoliposomes containing shape anisotropic nanop...
Pacheco, Ana Rita F.; Cardoso, Beatriz D.; Pires, Ana; Pereira, André M.; Araújo, João P.; Carvalho, Violeta M.; Rodrigues, Raquel O.Late diagnosis and systemic toxicity associated with conventional treatments make oncological therapy significantly difficult. In this context, nanomedicine emerges as a new approach in the prevention, diagnosis and treatment of cancer. In this work, pH-sensitive solid magnetoliposomes (SMLs) were developed for controlled release of the chemotherapeutic drug doxorubicin (DOX). Shape anisotropic magnetic nanopar...