Facile synthesis of freestanding Si nanowire arrays by one-step template-free electro-deoxidation of SiO2 in molten salt

This communication presents a novel kind of silicon nanomaterial: freestanding Si nanowire arrays (Si NWAs), which are synthesized facilely by one-step template-free electro-deoxidation of SiO2 in molten CaCl2. The self-assembling growth process of this material is also investigated preliminarily

Adsorption of boric acid trimethyl ester on silica surface studied by FT-IR spectroscopy

Adsorption of boric acid trimethyl ester (BATE) on high-surface-area silica has been studied by FT-IR spectroscopy. It is found that surface hydroxyls remaining after outgassing at high temperatures act as weak basic sites for BATE adsorption. Coordinate interaction of BATE with isolated hydroxyls dominates the adsorption and induces two splitting B-O vibrational bands at 1375 and 1345 cm(-1). In addition, a small amount of BATE reacts with hydrogen-bonded hydroxyls and strained oxygen generated after high-temperature dehydroxylation. (C) 1998 Elsevier Science B.V