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[交流] 在氧还原反应中用作持续电催化剂的可调的氮掺杂的碳气凝胶

Tunable nitrogen-doped carbon aerogels as sustainable electrocatalysts in the oxygen reduction reaction, Journal of Materials Chemistry A 1(2013)4002-4009.影响因子:6.626
摘要:A one pot hydrothermal synthesis towards nitrogen doped organic aerogels with tunable surface area and nitrogen content is presented. The gels were synthesized froma sustainable glucose carbon precursor with 2 pyrrol carboxaldehyde (PCA) as the nitrogen source and borax mineral as the structure forming agent. The particle size and hence surface area could be tuned from 75 nm down to 15 nm by varying the amounts of borax added. Similarly, the nitrogen content could be adjusted between 2.0 wt% and 5.5 wt% by varying the amount of PCA added to the glucose solution. Electrochemical testing of the nitrogen doped carbon aerogels as non-metal oxygen reduction catalysts revealed increasing activity with higher surface area and higher nitrogen content, as well as excellent long term stability. Our work thereby demonstrates the high potential of hydrothermal carbon materials and also provides a facile approach toward tunable nitrogen doped aerogels which should be useful for a wide range of applications.
中文翻译摘要:比表面积和氮含量可调的氮掺杂的有机气凝胶用水热法合成。这种凝胶由连续的葡萄糖碳前驱体,氮源PCA和结构形成剂硼砂矿物合成。通过改变硼砂的加入量,颗粒尺寸和表面积可以由75nm调节到15nm。类似的,通过改变葡萄糖溶液中PCA的加入量氮的含量可以在2.0wt%和5.5%wt%范围内调节。非金属氧还原催化剂氮掺杂的碳气凝胶的电化学测试表明提高了活性,具有高的表面积和高的氮含量和好的长时间的稳定性。因此我们的工作表明,水热法合成的碳材料具有高的电势,也提供了一种温和的方法制备可调的氮掺杂的碳气凝胶,该方法应该被应用到更广泛的领域。
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在氧还原反应中用作持续电催化剂的可调的氮掺杂的碳气凝胶-1
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在氧还原反应中用作持续电催化剂的可调的氮掺杂的碳气凝胶-2
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在氧还原反应中用作持续电催化剂的可调的氮掺杂的碳气凝胶-3
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