Seed-Mediated Continuous Growth of CoFe2O4 Nanoparticles in Triethylene Glycol Media: Role of Temperature and Injection Speed

被引：0

作者：

Nizamov, Timur ^{[1
]}

Yanchen, Li ^{[1
]}

Bordyuzhin, Igor ^{[1
]}

Mikheev, Vladislav ^{[1
]}

Abakumov, Maxim ^{[1
,2
]}

Shchetinin, Igor ^{[1
]}

Savchenko, Alexander ^{[1
]}

机构：

[1] Natl Univ Sci & Technol MISIS, Leninsky Pr T 4, Moscow 119049, Russia

[2] Pirogov Russian Natl Res Med Univ, Ostrovityanova 1, Moscow 117997, Russia

来源：

JOURNAL OF CLUSTER SCIENCE | 2025年 / 36卷 / 02期

基金：

俄罗斯科学基金会;

关键词：

Seed-mediated synthesis; Cobalt ferrite nanoparticles; Controllable secondary nucleation; Continuous growth; Polyol synthesis; Cobalt ferrite nanoclusters; IRON-OXIDE NANOPARTICLES; COBALT FERRITE NANOPARTICLES; CONTROLLED ADDITION; WATER; SIZE; FUNCTIONALIZATION; COMBUSTION; NUCLEATION; MORPHOLOGY; STEP;

D O I：

10.1007/s10876-025-02783-5

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

This study investigates the seed-mediated growth of CoFe2O4 nanoparticles by continuously injecting Co(acac)(2) and Fe(acac)(3) precursors into triethylene glycol under thermal decomposition conditions. We focused on the effects of precursor injection speed and synthesis temperature. The optimal injection rate was similar to 40 mL/h, with higher rates causing excessive secondary nucleation, while lower rates led to nanoparticle aggregation due to faster ligand stripping than monomer adsorption. A novel growth mechanism was proposed, involving secondary nucleation and clusterization, where new seeds adsorb onto growing nanoparticles, aided by the absence of strong stabilizers. Growth kinetics were analyzed using the Arrhenius equation, yielding an activation energy of 40.8 kJ/mol. Temperature also played a critical role in crystallite growth and nucleation. As temperature increased, crystallite size grew from 3.4 +/- 0.2 nm at 185 degrees C to 10.1 +/- 0.5 nm at 265 degrees C, with minimal change in nanoparticle size measured by TEM. Magnetic measurements showed an increase in saturation magnetization, when the reaction temperature was increased. Same impact of temperature on coercive force was also observed. This increase was attributed to crystallite sizes exceeding the 7 nm threshold for CoFe2O4 and low lattice strain. According to hyperthermia measurements the heating ability improved with larger crystallite size and higher M-s, but excessive H-c for samples at 265 C-o reduced efficiency. The findings enable precise control over nanoparticle growth and nucleation, allowing tailored synthesis of single- or polycrystalline CoFe2O4 with controlled magnetic properties. These advancements hold promise for a wide range of biomedical applications, including magnetic hyperthermia.

引用

页数：17

共 86 条

[1] Kumar M., Kumar A., Singh A., Anshul A., Sharma S., Sati P.C., Low temperature magnetic study and first principle calculation in ‘Mo’ doped CoFe2O4 for magnetic information storage applications, J Alloys Compd, 896, (2022)
[2] Mariosi F.R., Venturini J., da Cas Viegas A., Bergmann C.P., Lanthanum-doped spinel cobalt ferrite (CoFe2O4) nanoparticles for environmental applications, Ceram Int, 46, pp. 2772-2779, (2020)
[3] Shuaibov A.O., Abdurakhmanov M.G., Magomedova A.G., Omelyanchik A., Salnikov V., Aga-Tagieva S., Rodionova V., Rabadanov M.K., Orudzhev F.F., Sonophotocatalytic degradation of methylene blue with magnetically separable Zn-Doped-CoFe2O4/α-Fe2O3 heterostructures, Journal of Materials Science: Materials in Electronics, 35, pp. 1-14, (2024)
[4] Qin H., He Y., Xu P., Huang D., Wang Z., Wang H., Wang Z., Zhao Y., Tian Q., Wang C., Spinel ferrites (MFe2O4): Synthesis, improvement and catalytic application in environment and energy field, Adv Colloid Interface Sci, 294, (2021)
[5] Ahmadi M., Moslemzadeh M., Naderi A., Zehtab Salmasi M., Harati M., Rezaei Kalantary R., Kakavandi B., Intensified photodegradation of nitrobenzene using ZnO-anchored spinel cobalt ferrite: Environmental application, mechanism, and degradation pathway, Journal of Water Process Engineering, 49, (2022)
[6] Park B.J., Choi K.H., Nam K.C., Ali A., Min J.E., Son H., Uhm H.S., Kim H.J., Jung J.S., Choi E.H., Photodynamic anticancer activities of multifunctional cobalt ferrite nanoparticles in various cancer cells, J Biomed Nanotechnol, 11, pp. 226-235, (2015)
[7] Shakil M.S., Hasan M.A., Uddin M.F., Islam A., Nahar A., Das H., Khan M.N.I., Dey B.P., Rokeya B., Hoque S.M., In Vivo Toxicity Studies of Chitosan-Coated Cobalt Ferrite Nanocomplex for Its Application as MRI Contrast Dye, ACS Appl Bio Mater, 3, pp. 7952-7964, (2020)
[8] Garanina A.S., Nikitin A.A., Abakumova T.O., Et al., Cobalt ferrite nanoparticles for tumor therapy: Effective heating versus possible toxicity, Nanomaterials, (2022)
[9] Jasrotia R., Prakash J., Saddeek Y.B., Et al., Cobalt ferrites: Structural insights with potential applications in magnetics, dielectrics, and Catalysis, Coord Chem Rev, 522, (2025)
[10] Sharifianjazi F., Moradi M., Parvin N., Et al., Magnetic CoFe2O4 nanoparticles doped with metal ions: A review, Ceram Int, 46, pp. 18391-18412, (2020)

← 1 2 3 4 5 6 7 8 9 →