Synthesis and Characterization of Superparamagnetic Zinc Ferrite–Chitosan Composite Nanoparticles

Effect of Chitosan on the Microstructural Properties of Zinc Ferrite Nanoparticles

“…High adsorption capacity, selectivity, biocompatibility, eco-friendliness, and affordability are examples of this additional functionality. [18] Natural and synthetic polymers are two types of biopolymers utilized in the surface functionalization of NPs (such as graphene, PVA, PEG, and Chitosan. [2,[32][33][34] Additionally, Chitosan offers a method for conjugating therapeutics, imaging agents, and targeting ligands.…”

“…Surfactants such as chitosan can be used as stabilizers to address some of its issues, such as uncontrolled aggregation. [18] Co-precipitated ferrite formulated NPs have also been shown to have good electromagnetic characteristics, making them valuable in the multilayer chip industry. [3,28] Second, the key factor affecting the size, magnetic, electrical and morphological characteristics of NPs is the annealing or calcination temperature.…”

“…[9][10][11][12][13] When paired with the distinctive qualities of substituted molecules such as Mn, Ni, Cu, or Zn ferrites, which have a cubic spinel structure and strong magnetism they have outstanding magnetic properties, biocompatibility for biomedical applications and a large surface area to volume ratio. [4,5,10,[14][15][16][17] Various methods have been used to synthesize ferrite materials such as co-precipitation, [18] hydrothermal, [19] Sol-gel, [20,21,22] thermal decomposition, [1] and biosynthesis. [23][24][25][26] Owing to their biocompatibility and desirable magnetic characteristics, zinc-substituted (ZnFe 2 O 4 ) ferrite NPs have the most remarkable qualities among all ferrites for plethora biomedical applications.…”

“…Various methods have been used to synthesize ferrite materials such as co‐precipitation, [ 18 ] hydrothermal, [ 19 ] Sol–gel, [ 20,21,22 ] thermal decomposition, [ 1 ] and biosynthesis. [ 23–26 ] Owing to their biocompatibility and desirable magnetic characteristics, zinc‐substituted (ZnFe 2 O 4 ) ferrite NPs have the most remarkable qualities among all ferrites for plethora biomedical applications.…”

TÉCNICA DE FREEZE CASTING APLICADA A NANOPARTÍCULAS DE MnFe2O4

“…As ferritas de manganês possuem estrutura de espinélio parcialmente invertida, com 80% dos íons Mn 2+ nos sítios (A) e o restante nos sítios [B]. [5].Este material tem tido participação efetiva em diversas aplicações tecnológicas e vem a tempos ganhando destaque [6,7,8], com constante investigação das propriedades químicas, elétricas, fotoelétricas, térmicas e magnéticas [9,10,11,12,13,14], além do que, a utilização das ferritas em compósitos de matrizes poliméricas, cerâmicas ou metálicas são aplicados na produção de materiais biomédicos, transportadores de fármacos, agentes de contrastes magnéticos, catalisadores, pigmentos, purificadores e agentes removedores de íons, impurezas e microrganismos da água [15,16,17,18,19]. No presente estudo, a técnica de freeze castingfoi usada para fabricar um corpo cerâmicos porosoutilizando nanopartículas de MnFe 2 O 4 como pó cerâmico.…”