Direct Triblock-Copolymer-Templating Synthesis of Highly Ordered Fluorinated Mesoporous Carbon

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• 作者：Ying Wan ; Xufang Qian ; Nengqin Jia ; Zhiyong Wang ; Hexing Li ; Dongyuan Zhao
• 刊名：Chemistry of Materials
• 出版年：2008
• 出版时间：February 12, 2008
• 年：2008
• 卷：20
• 期：3
• 页码：1012 - 1018
• 全文大小：691K
• 年卷期：v.20,no.3(February 12, 2008)
• ISSN：1520-5002

文摘

Highly ordered mesoporous carbons have been synthesized from a direct triblock-copolymer-templating process of organic–organic self-assembly. The organic precursors are phenol, formaldehyde, and a functional monomer of p-fluorophenol, and the organic structure directing agent is triblock copolymer Pluronic F127. Characterization using X-ray diffraction (XRD), transmission electron microscopy (TEM), Raman, Fourier transform infrared (FTIR), and nitrogen adsorption techniques reveals that the fluorinated carbons possess highly ordered mesostructures, high surface areas (693–998 m²/g), large pore sizes (3.0–4.4 nm), large pore volumes (0.43–0.70 cm³/g), and C–F covalent bonds after high-temperature carbonization at 900 °C. Various mesostructures such as 2D hexagonal and 3D body-centered cubic structures can be synthesized by simply tuning the ratios of p-fluorophenol/phenol or phenol/triblock copolymer. The fluorinated mesoporous carbon modified glassy carbon (GC) electrode exhibits higher electron transfer rate than both pure mesoporous carbon FDU-15 modified and bare GC electrodes. This result further indicates the fluorination of mesoporous carbons and the potential for fluorinated mesoporous carbons in electrocatalytic reactions.