猪肝为原料制备氧还原电催化剂及其电催化性能  

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

作　　者：郭团玉[1,2] 杨丹丹 梁若雯 李文木 颜桂炀[4,5,2] 

机构地区：[1]宁德师范学院生物系,福建宁德352100 [2]特色生物化工材料福建省重点实验室,福建宁德3521003 [3]中国科学院福建物质结构研究所,福建福州350007 [4]宁德师范学院化学系,福建宁德352100 [5]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

出　　处：《过程工程学报》2017年第6期1274-1280,共7页The Chinese Journal of Process Engineering

基　　金：国家自然科学基金资助项目(编号:21473096;21303206);福建省高校产学合作科技重大专项(编号:2014H6003)

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.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 1 000 ℃ 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.

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 

分 类 号：Q556.9[生物学—生物化学]