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过程工程学报 ›› 2017, Vol. 17 ›› Issue (6): 1274-1280.DOI: 10.12034/j.issn.1009-606X.217257CSTR: 32067.14.jproeng.217257

• 过程与工艺 • 上一篇    下一篇

猪肝为原料制备氧还原电催化剂及其电催化性能

郭团玉1,5， 杨丹丹2，梁若雯3,5， 李文木2*，颜桂炀3,4,5*   

  1. 1. 宁德师范学院生物系，福建 宁德 352100；2. 中国科学院福建物质结构研究所，福建 福州 350007；3. 宁德师范学院化学系，福建 宁德 352100；4. 绿色能源与环境催化福建省高等学校重点实验室，福建 宁德 352100；5. 特色生物化工材料福建省重点实验室，福建 宁德 3521003
  • 收稿日期:2017-06-05 修回日期:2017-08-17 出版日期:2017-12-20 发布日期:2017-12-05
  • 通讯作者: 颜桂炀 ygyfjnu@163.com
  • 基金资助:
    国家自然科学基金面上项目;国家青年科学基金项目

Synthesis and Electrocatalytic Performance of the Carbon-supported ORR Catalyst from Pork Liver

Tuanyu GUO1,5, Dandan YANG2, Ruowen LIANG3,5, Wenmu LI2*, Guiyang YAN3,4,5*   

  1. 1. Department of Biology, Ningde Normal University, Ningde, Fujian 352100, China; 2. Fujian Institute of Research on the Structure of Matter, CAS, Fuzhou, Fujian 350002, China; 3. Department of Chemistry, Ningde Normal University, Ningde, Fujian 352100, China; 4. Fujian Province University Key Laboratory of Green Energy and Environment Catalysis, Ningde, Fujian 352100, China; 5. Fujian Provincial Key Laboratory of Featured Materials in Biochemical Industry, Ningde, Fujian 352100, China
  • Received:2017-06-05 Revised:2017-08-17 Online:2017-12-20 Published:2017-12-05

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摘要： 选用价格低廉的生物质猪肝为原料，采用两步热解法和碳负载法制备M?N/C型非贵金属催化剂，考察了热处理温度、混合气体比例及前驱体对催化剂结构和电催化性能的影响. 结果表明，热处理温度为1000℃、氮气与氨气体积比为7:3的条件下，二次热解所得催化剂氧还原电催化性能最好. 氨气中二次热解改变了催化剂的表面形貌和物相结构，有利于产生更高含量的吡啶型氮，增强了催化剂在碱性溶液中的氧还原电催化活性. 黑珍珠2000 (BP2000)虽然能显著提高一次热解催化剂的活性，但由于其在氨气中的反应活性不如热解猪肝所得碳材，在氨气二次热解中对催化剂活性反而有不利影响.

关键词: 猪肝, 二次热解法, 非贵金属催化剂, 氧还原电催化活性

Abstract: The non-precious metal catalyst was prepared by two-step pyrolysis method and carbon-supported method from the very cheap biomass, pork liver, as the raw material. The influences of the heat-treatment temperature, the ratio of mixed gase and precursor on the catalytic activity were investigated. The results showed that the catalyst, which was prepared at 1000℃ and the volume ratio of N2:NH3 was 7:3, exhibited remarkably excellent electrocatalytic performance for the oxygen reduction reaction (ORR). The two-step pyrolysis under NH3 has changed the surface morphology and crystal phase structure of the as-prepared catalyst, which assisted to obtain the high percentage of pyridinic-N. It has enhanced the electrocatalytic performance for the oxygen reduction reaction in the alkaline environment. Alought Black Pearls 2000 (BP2000) could improved the performance of one-step pyrolysis catalyst, its reactivity under NH3 was not good as that of carbon-supported from pork liver, causing an adverse impact on the performance of two-step pyrolysis catalyst.

Key words: pork liver, two-step pyrolysis method, non-precious metal catalysts, electrocatalytic performance for the oxygen reduction reaction