以 Ti³⁺ 为媒介在阳极 TiO2 纳米管上支撑钯的新方法：在赫克反应中实现高效和可循环催化

IF 4.7 2区化学 Q2 CHEMISTRY, PHYSICAL Applied Catalysis A: General Pub Date : 2024-09-03 DOI:10.1016/j.apcata.2024.119942

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引用次数: 0

摘要

利用简单的电化学还原技术在阳极二氧化钛纳米管（ATNTs）上生成了具有强还原性的 Ti3+。利用 Ti3+ 作为还原剂，成功地在阳极 TiO2 纳米管（Pd@ATNTs）上将 Pd2+ 原位还原成 Pd0。采用多种表征方法证实，Ti3+的比例和 Pd 纳米颗粒的大小可通过调节电化学还原电压来控制。获得的 [email protected] 在各种芳基卤化物与烯烃的 Heck 反应中表现出令人满意的催化效率（TOF：1302 h-1）。此外，[email protected]还表现出了很高的稳定性，即使在六个周期后也没有观察到催化活性的明显下降。

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A novel Ti³⁺-mediated approach for supporting palladium on anodic TiO2 nanotubes: Toward efficient and recyclable catalysis in the heck reaction

A simple electrochemical reduction technique was employed to generate Ti³⁺ with strong reducing property on the anodic TiO₂ nanotubes (ATNTs). Utilizing Ti³⁺ as the reducing agent, Pd²⁺ was successfully reduced in situ to Pd⁰ on the anodic TiO₂ nanotubes (Pd@ATNTs). Various characterization methods were employed to confirm that the proportion of Ti³⁺ and the size of Pd nanoparticles could be controlled by adjusting the electrochemical reduction voltage. The obtained [email protected] exhibited satisfactory catalytic efficiency (TOF: 1302 h⁻¹) in the Heck reaction between various aryl halides and olefins. Furthermore, [email protected] demonstrated high stability, with no significant loss of catalytic activity observed even after six cycles.

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来源期刊

Applied Catalysis A: General 化学-环境科学

CiteScore

9.00

自引率

5.50%

发文量

415

审稿时长

24 days

期刊介绍： Applied Catalysis A: General publishes original papers on all aspects of catalysis of basic and practical interest to chemical scientists in both industrial and academic fields, with an emphasis onnew understanding of catalysts and catalytic reactions, new catalytic materials, new techniques, and new processes, especially those that have potential practical implications. Papers that report results of a thorough study or optimization of systems or processes that are well understood, widely studied, or minor variations of known ones are discouraged. Authors should include statements in a separate section "Justification for Publication" of how the manuscript fits the scope of the journal in the cover letter to the editors. Submissions without such justification will be rejected without review.