In this work, the highly ordered tungsten trioxide nanotube arrays have been synthesized by the combination of Sol-Gel chemical method and anodic aluminum oxide (AAO) templating method. The morphology and the chemical...In this work, the highly ordered tungsten trioxide nanotube arrays have been synthesized by the combination of Sol-Gel chemical method and anodic aluminum oxide (AAO) templating method. The morphology and the chemical composition of tungsten trioxide nanotubes arrays were characterized by Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), X-ray Photoelectron Spectroscopy (XPS) and X-ray diffraction (XRD). The results show that the wall thickness of the tungsten trioxide nanotubes arrays can be controlled by the immersion time. The growth mechanism of naotubes arrays is also discussed.展开更多
： The four heteropoly isomers K3H2[α-,β i-SiW11Fe(H2O)O39]· xH2O(β i=β 1,β 2,β 3)were prepared and Characterized by elementary analysis, IR and UV Spectroscopy. Its electrochemical behavior in aqueous solu...： The four heteropoly isomers K3H2[α-,β i-SiW11Fe(H2O)O39]· xH2O(β i=β 1,β 2,β 3)were prepared and Characterized by elementary analysis, IR and UV Spectroscopy. Its electrochemical behavior in aqueous solution has been discussed. The order of Polarographic half-wave potential E1/2 of heteropoly anions is as follows:β 2 >β 1 >β 3 >α . Its reduction process involves an one-electron reduction of Fe? and a pair of two-electron reduction of W? . Epolidation of maleic acid with H2O2 Catalyzed by heteropoly positional isomers was studied.β 3 isomers are the most active.展开更多
基金financially supported by the National Natural Science Foudation of China(Grants No.22103009,22025101,22222103,22173015,21871039,21801037,91961114,and 22071017)financial support by the Fundamental Research Funds for the Central Universities of China(Grants No.PA2021GDSK0063 and PA2020GDJQ0028)。
文摘In this work, the highly ordered tungsten trioxide nanotube arrays have been synthesized by the combination of Sol-Gel chemical method and anodic aluminum oxide (AAO) templating method. The morphology and the chemical composition of tungsten trioxide nanotubes arrays were characterized by Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), X-ray Photoelectron Spectroscopy (XPS) and X-ray diffraction (XRD). The results show that the wall thickness of the tungsten trioxide nanotubes arrays can be controlled by the immersion time. The growth mechanism of naotubes arrays is also discussed.
文摘： The four heteropoly isomers K3H2[α-,β i-SiW11Fe(H2O)O39]· xH2O(β i=β 1,β 2,β 3)were prepared and Characterized by elementary analysis, IR and UV Spectroscopy. Its electrochemical behavior in aqueous solution has been discussed. The order of Polarographic half-wave potential E1/2 of heteropoly anions is as follows:β 2 >β 1 >β 3 >α . Its reduction process involves an one-electron reduction of Fe? and a pair of two-electron reduction of W? . Epolidation of maleic acid with H2O2 Catalyzed by heteropoly positional isomers was studied.β 3 isomers are the most active.
