The Surface Modification of Silica with Vinyltriethoxysilane

A review is provided of the research progress of silica modified with vinyltriethoxysilane (VTES-SiO2). The typical methods for preparing VTES-SiO2are introduced. The structure and stability of VTES layer and the controllability of various modified methods are elucidated. The characterization of VTES modified layer by means of Fourier transform infrared spectrometry, X-ray photoelectron spectroscopy, nuclear magnetic resonance, thermogravimetry, scanning electron microscopy and transmission electron microscopy are highlighted. Moreover, the application of VTES-SiO2 in the fields of rubber, glass, china, fiber, leather, paint, drug carrier, luminescent materials, catalyst technology, analytical chemistry and biochemistry were described in detail. The development trend on the preparation, determination of active groups and applications for VTES-SiO2were prospected, as well as the mechanism and the existing problems.