Preparation of Ti4+ Immobilized Silica Nanocomposites and Their Application in Separation and Enrichment of Phosphoproteins[J]. 2019,38(10):1228-1233.DOI:
The Ti4+ immobilized silica nanocomposites(SiO2-Ti4+) were fabricated by synthesizing silica nanoparticles with tetraethoxysilane(TEOS) and γ-mercaptopropyl trimethoxysilane(γ-MPTS) as precursors,followed by “thiol-ene” click reaction and “one pot” process.The morphology and structure properties of the resultant SiO2-Ti4+ were characterized by transmission electronic microscopy(TEM),Fourier transform infrared spectroscopy(FT-IR) and X ray photoelectron spectroscopy(XPS).The adsorption behavior of the SiO2-Ti4+ towards phosphoproteins was investigated.Under the optimized conditions,the SiO2-Ti4+ showed a rather higher adsorption capacity towards phosphoproteins(α-casein,12.27 μmol/g) than non phosphoproteins(horseradishperoxidase,1.12 μmol/g).In addition,the practicality of the SiO2-Ti4+ was further demonstrated by their selective enrichment of phosphoproteins from milk samples.
关键词
“巯-烯”点击反应一锅法磷酸化蛋白纳米二氧化硅分离富集
Keywords
“thiol-ene” click reaction“one pot” processphosphoproteinsnano sized SiO2separation and enrichment