Conductive and Electroactive Polymers Research Unit, The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok, 10330, Thailand.
Department of Chemistry, Faculty of Science, King Mongkut's University of Technology Thonburi, Bangkok, 10140, Thailand.
Sci Rep. 2022 Mar 17;12(1):4611. doi: 10.1038/s41598-022-08709-9.
The cobalt ferrite nanoparticles (CoFeFeO) were synthesized by the surfactant templated co-precipitation method using various surfactants namely sodium dodecyl sulfate (SDS), hexadecyltrimethylammonium bromide (CTAB), and Tween20. Under the substitution, the CoFeFeO particles were synthesized at various Co and Fe mole ratios (x = 1, 0.6, 0.2, and 0) with the SDS. The cobalt ferrite nanoparticles were characterized for their morphology, structure, magnetic, and electrical properties. All CoFeFeO nanoparticles showed the nanoparticle sizes varying from 16 to 43 nm. In the synthesis of CoFeO, the SDS template provided the smallest particle size, whereas the saturated magnetization (M) of CoFeO was reduced by using CTAB, SDS, and Tween20. For the CoFeFeO as synthesized by the SDS template at 1.2 CMC, the M increased with increasing Fe mole ratio. The highest M of 100.4 emu/g was obtained from the FeO using the SDS template. The FeO nanoparticle is potential to be used in various actuator and biomedical devices.
钴铁氧体纳米粒子（CoFeFeO）采用表面活性剂模板共沉淀法，使用不同的表面活性剂（即十二烷基硫酸钠（SDS）、十六烷基三甲基溴化铵（CTAB）和吐温 20）合成。在取代的情况下，在 SDS 存在下，以不同的 Co 和 Fe 摩尔比（x = 1、0.6、0.2 和 0）合成 CoFeFeO 颗粒。对钴铁氧体纳米粒子进行了形貌、结构、磁性和电性的表征。所有 CoFeFeO 纳米粒子的粒径均在 16 至 43nm 之间变化。在 CoFeO 的合成中，SDS 模板提供了最小的粒径，而 CTAB、SDS 和 Tween20 的使用降低了 CoFeO 的饱和磁化强度（M）。对于在 SDS 模板下以 1.2CMC 合成的 CoFeFeO，随着 Fe 摩尔比的增加，M 增加。在 SDS 模板下使用 FeO 获得的最大 M 为 100.4emu/g。FeO 纳米粒子有望用于各种执行器和生物医学设备。
