调控钯基纳米线上的羟基，促进乙烯直接电氧化制乙二醇

IF 3.3 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Dalton Transactions Pub Date : 2025-09-24 DOI:10.1039/d5dt01958c

Shengyu Hu, CuiYu Li, Hui Jin, Dandan Sun, Yachong Wang, Jie Cao, Qiaoli Chen, Yihan Zhu

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引用次数: 0

摘要

电催化乙烯氧化为选择性乙二醇生产提供了一条很有前途的途径，克服了传统苛刻的催化方法的缺点。尽管面临着低选择性和电流密度等挑战，但创新的催化剂设计已经出现。本研究介绍了一种新型的PdAuBi合金纳米线，采用简单的湿化学方法合成。Au原子的掺杂通过降低羟基结合能来提高催化活性，Bi原子通过增加羟基覆盖来促进高效的乙烯氧化和EG的生成。值得注意的是，PdAuBi纳米线的法拉第效率超过72%，液体产物选择性为87%，超过了商用Pd/C催化剂。原位电化学红外光谱进一步阐明了转化过程，强调了羟基调控在促进乙烯向乙二醇转化中的作用。

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Regulating Hydroxyl Species over Pd-based Nanowires towards Enhanced Direct Electrooxidation of Ethylene to Ethylene Glycol

Electro-catalytic ethylene oxidation presents a promising avenue for selective ethylene glycol production, circumventing the drawbacks of traditional harsh catalytic methods. Despite challenges like low selectivity and current density, innovative catalyst designs have emerged. This study introduces a novel PdAuBi alloy nanowires synthesized via a simple wet chemical route. The Au atoms doping enhances catalytic activity by reducing hydroxyl binding energy while Bi atoms increase hydroxyl coverage, promoting efficient ethylene oxidation and EG production. Remarkably, the PdAuBi nanowires exhibit Faraday efficiency exceeding 72% with liquid products selectivity of 87%, surpassing commercial Pd/C catalysts. In-situ electrochemical infrared spectroscopy further elucidates the transformation process, emphasizing the role of hydroxyl regulation in enhancing ethylene to ethylene glycol conversion.

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来源期刊

Dalton Transactions 化学-无机化学与核化学

CiteScore

6.60

自引率

7.50%

发文量

1832

审稿时长

1.5 months

期刊介绍： Dalton Transactions is a journal for all areas of inorganic chemistry, which encompasses the organometallic, bioinorganic and materials chemistry of the elements, with applications including synthesis, catalysis, energy conversion/storage, electrical devices and medicine. Dalton Transactions welcomes high-quality, original submissions in all of these areas and more, where the advancement of knowledge in inorganic chemistry is significant.