CAJ | 학술논문

十六烷基羧甲砜基氢氧化铁和丁基羧甲砜基氢氧化铁通过热脱羧方法,合成了纳米氧化铁颗粒.采用X射线衍射、红外光谱及透射电镜等手段对纳米氧化铁的合成过程和结构特征进行了表征.制备的纳米氧化铁具有8～18nm的晶粒尺寸.羧甲砜基的热脱羧过程使得表面活性剂从纳米颗粒表面去除相对容易,特别是丁基羧甲砜基化合物.十六烷基羧甲砜基氢氧化铁制备纳米氧化铁颗粒存在脱羧有机分子还原Fe3+过程,而丁基羧甲砜基氢氧化铁通过热脱羧分解的方式合成纳米氧化铁颗粒.
십륙완기최갑풍기경양화철화정기최갑풍기경양화철통과열탈최방법,합성료납미양화철과립.채용X사선연사、홍외광보급투사전경등수단대납미양화철적합성과정화결구특정진행료표정.제비적납미양화철구유8～18nm적정립척촌.최갑풍기적열탈최과정사득표면활성제종납미과립표면거제상대용역,특별시정기최갑풍기화합물.십륙완기최갑풍기경양화철제비납미양화철과립존재탈최유궤분자환원Fe3+과정,이정기최갑풍기경양화철통과열탈최분해적방식합성납미양화철과립.
Magnetite nanoparticles were prepared by thermal decomposition of iron hydroxide cetylsulfonyl acetate and butylsulfonyl acetate under the protection of nitrogen. The morphology, crystallinity and oxidation state of Fe were studied using TEM, XRD and FTIR. The results reveal that magnetite nanoparticles are 8－18 nm in diameter, and the thermal decarboxylation of carboxymethylsulfonyl in both precursors makes the removal of organic compounds easy, especially in the one with short carbon chain. The final nanoparticles are formed in two different ways, where C16 samples magnetite is derived from the reduction of Fe3 + by organic fractions, whereas the nanoparticles of ferric oxides are derived in C4 product from the thermal decomposition.