摘要
用三氯化铁(FeCl3)提供铁源,分别以2种不同化学结构的聚(4-苯乙烯磺酸-共聚-马来酸)(poly styrene sulfonic acid-co-maleic acid PSSMA)钠盐作为表面活性剂,采用溶剂热法制备磁响应四氧化三铁(Fe_(3)O_(4))纳米颗粒。研究不同结构的PSSMA表面活性剂和反应条件对Fe_(3)O_(4)纳米颗粒形貌、粒径与光学性能的影响。结果表明,在强碱环境下,以n(SS)∶n(MA)=1∶1的PSSMA作表面活性剂制备的Fe_(3)O_(4)粒子表面粗糙,为近球形,粒径随水量增加而增大;在弱碱条件下,以n(SS)∶n(MA)=3∶1的PSSMA为表面活性剂制备的Fe_(3)O_(4)粒子表面光滑,为规则球形,粒径随Fe^(3+)含量增加而增大。在弱碱环境下,由于PSSMA(3∶1)表面含有更丰富的磺酸基,更适合生成粒径均一、单分散性好且具有优异超顺磁性的Fe_(3)O_(4)纳米颗粒。该Fe_(3)O_(4)纳米颗粒分散体系在外磁场作用下可快速形成有序光子晶体纳米颗粒群,获得优异的可调结构色。
Magnetically responsive ferroferric oxide(Fe_(3)O_(4))nanoparticles were prepared by solvothermal method using ferric trichoride(FeCl3)as the iron source and poly(styrene sulfonic acid-co-maleic acid)(PSSMA)sodium salt with two different chemical structures as surfactants.The effects of PSSMA surfactants with different structures and reaction conditions on the morphology,particle size,and photonic properties of Fe_(3)O_(4)nanoparticles were investigated.The results show that the Fe_(3)O_(4)particles are nearly spherical and surface is rough when using PSSMA with n(SS)∶n(MA)=1∶1 as surfactant in strong alkali environment,and particle size increases with increasing water content.Using PSSMA with n(SS)∶n(MA)=3∶1 as surfactant in weak alkali environment,the particles are regular spherical and surface is smooth,and the size increases with increasing Fe^(3+)content.It is more suitable for the generation of superparamagnetic Fe_(3)O_(4)nanoparticles with uniform particle size and good monodispersity in weak alkaline environment due to the more abundant sulfonic acid group on the surface.This Fe_(3)O_(4)nanoparticle dispersion system can rapidly form ordered photonic crystal nanoparticles under the action of external magnetic field,and obtain excellent tunable structure color.
作者
田兆霞
吴志生
肖威
许高杰
刘丰华
TIAN Zhaoxia;WU Zhisheng;XIAO Wei;XU Gaojie;LIU Fenghua(School of Materials Science and Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China;Zhejiang Key Laboratory of Additive Manufacturing Materials,Ningbo Institute of Materials Technology&Engineering,Chinese Academy of Sciences,Ningbo 315201,China)
出处
《粉末冶金材料科学与工程》
2023年第2期129-140,共12页
Materials Science and Engineering of Powder Metallurgy
基金
江苏省产业前瞻与关键核心技术项目(BE2019072)
甘肃省技术创新引导计划区域科技合作专项(20JR10QA579)。
关键词
磁响应光子晶体
四氧化三铁
PSSMA
粒径
磁致变色
magnetically responsive photonic crystals
ferroferric oxide
PSSMA
particle size
magnetic discoloration
作者简介
通信作者:吴志生,教授,博士。电话:13111064368,E-mail:1479497946@qq.com。
