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Facile fabrication of non-spherical thiol-functionalized organosilica particles and their adsorption of Ag(I)
Journal of Polymer Research ( IF 2.8 ) Pub Date : 2021-01-12 , DOI: 10.1007/s10965-020-02403-y
Yanling Pan , Xin Lu , Puyuan Li , Zhong Xin

Thiol-functionalized organosilica particles with bowl-like or golf ball-like morphology were successfully obtained through a facile sol–gel procedure. 3-mercaptopropyltrimethoxysilane (MPTMS) and tetraethoxysilane (TEOS) were copolymerized under the catalysis of ammonia. The morphology and the growth process of bowl-like and golf ball-like organosilica particles were observed using scanning electron microscopy (SEM). The results demonstrated that the morphology of the organosilica particles could be finely controlled by adjusting the amount of ammonia, the ratio of two silane precursors, the ratio of oil to water and the solvent system. 29Si nuclear magnetic resonance (29Si NMR) spectroscopy and Fourier transform infrared (FTIR) spectroscopy were used to detect the composition of the non-spherical particles. Moreover, the as-obtained thiol-functionalized organosilica particles performed high Ag(I) adsorption property with the maximum adsorption capacity of 465.0 mg/g.



中文翻译:

非球形硫醇官能化有机二氧化硅颗粒的简便制备及其对Ag(I)的吸附

通过简便的溶胶-凝胶法成功获得了具有碗状或高尔夫球状形态的硫醇官能化有机硅颗粒。3-巯基丙基三甲氧基硅烷(MPTMS)和四乙氧基硅烷(TEOS)在氨气的催化下共聚。使用扫描电子显微镜(SEM)观察碗状和高尔夫球状有机二氧化硅颗粒的形态和生长过程。结果表明,通过调节氨的量,两种硅烷前体的比例,油水比和溶剂体系,可以很好地控制有机硅颗粒的形貌。29 Si核磁共振(29Si NMR)光谱和傅里叶变换红外(FTIR)光谱用于检测非球形颗粒的组成。此外,所获得的硫醇官能化的有机二氧化硅颗粒表现出高的Ag(I)吸附性能,最大吸附容量为465.0mg / g。

更新日期:2021-01-12
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