首页|介孔碳纳米纤维负载有序PtFe合金纳米颗粒用于电催化硝酸盐还原产氨

介孔碳纳米纤维负载有序PtFe合金纳米颗粒用于电催化硝酸盐还原产氨

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  • 国家科技期刊平台
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高分散的双金属合金纳米颗粒电催化剂通常在推动硝酸根还原反应产氨中表现出非凡的性能。该研究利用聚乙二醇-聚苯乙烯嵌段共聚物(PEO-b-PS)作为模板，通过复合胶束界面诱导共组装法，制备有序PtFe合金功能化的介孔碳纳米纤维复合材料。当用作电催化剂时，有序PtFe合金比无序PtFe合金对硝酸根还原反应表现出更优异的电催化性能。有序PtFe合金催化产氨性能尤为出色，最大氨产量达959。6 μmol/(h-cm2)。在电位相对于可逆氢电极为-0。4 V(-0。4 V vs。RHE)的条件下，其法拉第效率达88。0％。这一发现充分展示了有序PtFe合金催化剂在电催化硝酸根还原反应方面的潜力。
Mesoporous Carbon Nanofibers Loaded with Ordered PtFe Alloy Nanoparticles for Electrocatalytic Nitrate Reduction to Ammonia
Highly dispersed bimetallic alloy nanoparticle electrocatalysts have been demonstrated to exhibit exceptional performance in driving the nitrate reduction reaction(NO3RR)to generate ammonia(NH3).In this study,we prepared mesoporous carbon nanofibers(mCNFs)functionalized with ordered PtFe alloys(O-PtFe-mCNFs)by a composite micelle interface-induced co-assembly method using poly(ethylene oxide)-block-polystyrene(PEO-b-PS)as a template.When employed as electrocatalysts,O-PtFe-mCNFs exhibited superior electrocatalytic performance for the NO3RR compared to the mCNFs functionalized with disordered PtFe alloys(D-PtFe-mCNFs).Notably,the NH3 production performance was particularly outstanding,with a maximum NH3 yield of up to 959.6 μmol/(h·cm2).Furthermore,the Faraday efficiency(FE)was even 88.0％at-0.4 V vs.reversible hydrogen electrode(RHE).This finding provides compelling evidence of the potential of ordered PtFe alloy catalysts for the electrocatalytic NO3RR.

ordered PtFe alloymesoporous carbon nanofiber(mCNF)nitrate reduction reaction(NO3RR)ammonia(NH3)production reaction

谢梦、罗维、邱鹏鹏

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东华大学材料科学与工程学院,纤维材料改性国家重点实验室,上海 201620

有序PtFe合金 介孔碳纳米纤维 硝酸根还原 产氨反应

国家自然科学基金国家自然科学基金国家自然科学基金上海市教委科研创新计划上海市自然科学基金"Shuguang Program"Shanghai Education Development Foundation and Shanghai Municipal Education Commission,China中央高校基本科研业务费专项DHU Distinguished Young Professor ProgramDHU Distinguished Young Professor Program

5222520452173233522020852021-01-07-00-03-E0010923ZR147920020SG332232024Y-01LZA2022001LZB2023002

2024

10.19884/j.1672-5220.202404012

东华大学学报(英文版)
东华大学

东华大学学报(英文版)

影响因子：0.091
ISSN：1672-5220
年,卷(期)：2024.41(4)