低共熔溶剂辅助合成新型的网状纳米结构用于加速甲酸电氧化

doi:10.13208/j.electrochem.2206231

电化学（中英文） ›› 2023, Vol. 29 ›› Issue (5): 2206231. doi: 10.13208/j.electrochem.2206231

所属专题： “电催化和燃料电池”专题文章

低共熔溶剂辅助合成新型的网状纳米结构用于加速甲酸电氧化

张俊明^a^,^b^,^c^,^*(), 张小杰^a^,^b, 陈瑶^a, 房英健^a, 樊友军^b^,^*(), 贾建峰^a^,^*()

^a山西师范大学化学与材料科学学院，磁性分子与磁信息材料教育部重点实验室，山西太原 030031
^b广西师范大学化学与药学学院，广西低碳能源材料重点实验室，广西桂林 541004
^c昆山良品丝印器材有限公司，江苏昆山 215300

收稿日期:2022-06-23 修回日期:2022-07-19 接受日期:2023-07-21 出版日期:2023-05-28 发布日期:2022-07-29

Deep Euteceic Solvents-Assisted Synthesis of Novel Network Nanostructures for Accelerating Formic Acid Electrooxidation

Jun-Ming Zhang^a^,^b^,^c^,^*(), Xiao-Jie Zhang^a^,^b, Yao Chen^a, Ying-Jian Fang^a, You-Jun Fan^b^,^*(), Jian-Feng Jia^a^,^*()

^aKey Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education, The School of Chemical and Material Science, Shanxi Normal University, Taiyuan 030031, Shanxi, China
^bGuangxi Key Laboratory of Low Carbon Energy Materials, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, Guangxi, China
^cKunshan Superior Silk Screen Printing Material Co., LTD, Kunshan 215300, Jiangsu, China

Received:2022-06-23 Revised:2022-07-19 Accepted:2023-07-21 Published:2023-05-28 Online:2022-07-29
Contact: * Tel: (86-351)2051192, E-mail: zhangjunming@sxnu.edu.cn；Tel: (86-773)5846279, E-mail: youjunfan@mailbox.gxnu.edu.cn；Tel: (86-351)2051192, E-mail: jiajf@dns.sxnu.edu.cn

1. 1006-3471-29-5-2206231-S1.pdf(856KB)

摘要/Abstract

摘要：

低共熔溶剂（DESs）是一种用于可控合成金属纳米结构的溶剂。在氯化胆碱-尿素DESs中，使用抗坏血酸作为还原剂可以制备由交错的纳米片和纳米球组成的花状Pd纳米颗粒，并且其自发地转化为三维网络纳米结构。此纳米网状结构的形成机制也有系统的研究，其中，DESs作为溶剂和软模板用于形成3D花状钯网络纳米结构（Pd-FNNs），CTAB和NaOH的用量在Pd-FNNs的各向异性生长和生成中起着至关重要的作用。Pd较低的电催化性能是阻碍燃料电池商业化应用的主要挑战之一。然而，具有较低表面能和丰富晶界的3D Pd-FNNs对甲酸氧化反应表现出增强的电催化活性和稳定性，其质量活性和本征活性分别是商业Pd黑催化剂的2.7和1.4倍。因此，此策略为合成独特的Pd基纳米结构提供了一种可行的路径。

关键词: 低共熔溶剂, 钯, 网络纳米结构, 甲酸

Abstract:

Deep eutectic solvents (DESs) have been reported as a type of solvent for the controllable synthesis of metal nanostructures. Interestingly, flower-like palladium (Pd) nanoparticles composed of staggered nanosheets and nanospheres are spontaneously transformed into three-dimensional (3D) network nanostructures in choline chloride-urea DESs using ascorbic acid as a reducing agent. Systematic studies have been carried out to explore the formation mechanism, in which DESs itself acts as a solvent and soft template for the formation of 3D flower-like network nanostructures (FNNs). The amounts of hexadecyl trimethyl ammonium bromide and sodium hydroxide also play a crucial role in the anisotropic growth and generation of Pd-FNNs. The low electrocatalytic performance of Pd is one of the major challenges hindering the commercial application of fuel cells. Whereas, the 3D Pd-FNNs with lower surface energy and abundant grain boundaries exhibited the enhanced electrocatalytic activity and stability toward formic acid oxidation, by which the mass activity and specific activity were 2.7 and 1.4 times higher than those of commercial Pd black catalyst, respectively. Therefore, the current strategy provides a feasible route for the synthesis of unique Pd-based nanostructures.

Key words: Deep eutectic solvents, Palladium, Network nanostructure, Formic acid

张俊明, 张小杰, 陈瑶, 房英健, 樊友军, 贾建峰. 低共熔溶剂辅助合成新型的网状纳米结构用于加速甲酸电氧化[J]. 电化学（中英文）, 2023, 29(5): 2206231.

Jun-Ming Zhang, Xiao-Jie Zhang, Yao Chen, Ying-Jian Fang, You-Jun Fan, Jian-Feng Jia. Deep Euteceic Solvents-Assisted Synthesis of Novel Network Nanostructures for Accelerating Formic Acid Electrooxidation[J]. Journal of Electrochemistry, 2023, 29(5): 2206231.

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链接本文: https://electrochem.xmu.edu.cn/CN/10.13208/j.electrochem.2206231

https://electrochem.xmu.edu.cn/CN/Y2023/V29/I5/2206231

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参考文献 42

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低共熔溶剂辅助合成新型的网状纳米结构用于加速甲酸电氧化

Deep Euteceic Solvents-Assisted Synthesis of Novel Network Nanostructures for Accelerating Formic Acid Electrooxidation

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