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采用熔融盐合成技术,以生物质葡萄糖和富氮三聚氰胺为前驱体,成功制备得到具有发达孔隙结构(BET表面积:1355 m~2/g)和极高氮掺杂量(20.73wt%)的氮掺杂多孔炭材料。X射线光电子能谱(XPS)分析表明,多孔炭材料中的氮原子主要以吡咯及吡啶构型存在,这两种形态的氮原子有利于硫化氢的吸附及催化氧化。在常温、常压下,所制备氮掺杂多孔炭对硫化氢非金属催化转化为单质硫的脱除硫容高达1.10 g/g。该合成方法简便易行,有望实现氮掺杂多孔炭材料的批量和廉价制备,合成的氮掺杂多孔炭在污染物控制领域应用潜能巨大。
Using molten salt synthesis technology and biomass glucose and nitrogen-rich melamine as precursors, nitrogen with developed pore structure (BET surface area: 1355 m 2 / g) and very high nitrogen doping amount (20.73wt%) was successfully prepared. Doping porous carbon material. X-ray photoelectron spectroscopy (XPS) analysis showed that the nitrogen atoms in the porous carbon material mainly exist in the pyrrole and pyridine configurations, and the two nitrogen atoms are favorable for the adsorption and catalytic oxidation of hydrogen sulfide. Under room temperature and atmospheric pressure, the nitrogen-doped porous carbon prepared has a sulfur capacity of up to 1.10 g / g for the catalytic conversion of non-metal hydrogen sulfide to elemental sulfur. The synthesis method is simple and convenient, and is expected to realize batch and cheap preparation of nitrogen-doped porous carbon materials. The synthesized nitrogen-doped porous carbon has great potential in the field of pollutant control.