Nanocrystalline cobalt powders have been prepared from aqueous solution by reducing their corresponding metal salts under suitable conditions. The experimental conditions have been studied in detail. X-ray powder diff...Nanocrystalline cobalt powders have been prepared from aqueous solution by reducing their corresponding metal salts under suitable conditions. The experimental conditions have been studied in detail. X-ray powder diffraction patterns show that the cobalt powder is hexagonal crystallite. The average particle size of the ultrafine cobalt powder is 55 nm.展开更多
The electrochemical reaction mechanism of Vitamin B2 on platinum electrode in acid aqueous solution has been studied by then layer cyclic voltammetry(TLCV) and thin layer spectroelectrochemistry (TLSEC).The results in...The electrochemical reaction mechanism of Vitamin B2 on platinum electrode in acid aqueous solution has been studied by then layer cyclic voltammetry(TLCV) and thin layer spectroelectrochemistry (TLSEC).The results indicate that there is a redox process of VB2 via a semiquinone radical to dihydroflavin. The radical intermediate has been detected by in-situ UVSEC method for the first time.展开更多
基金Blazing A New Trail through Science and Technology Foundation" of Northwest Normal University and Educational Committee Founda
文摘Nanocrystalline cobalt powders have been prepared from aqueous solution by reducing their corresponding metal salts under suitable conditions. The experimental conditions have been studied in detail. X-ray powder diffraction patterns show that the cobalt powder is hexagonal crystallite. The average particle size of the ultrafine cobalt powder is 55 nm.
文摘The electrochemical reaction mechanism of Vitamin B2 on platinum electrode in acid aqueous solution has been studied by then layer cyclic voltammetry(TLCV) and thin layer spectroelectrochemistry (TLSEC).The results indicate that there is a redox process of VB2 via a semiquinone radical to dihydroflavin. The radical intermediate has been detected by in-situ UVSEC method for the first time.
