Scholarlink

<p>Copper-based catalysts for Suzuki coupling reactions face limitations in efficiency and stability, while conventional palladium catalysts require high costs and harsh conditions. To address these challenges, we developed a bifunctional copper-loaded black phosphorus (Cu/BP) material. Initially, a series of Cu/BP catalysts (1–5&#xa0;wt% Cu) were synthesized via wet chemical reduction. Subsequently, catalytic performance was evaluated using vector network analysis and a microwave catalysis system. Key results were obtained: Cu/BP-3 exhibited exceptional microwave absorption (minimum reflection loss: − 36.31&#xa0;dB; effective bandwidth: 6.64&#xa0;GHz). Under microwave heating (90&#xa0;°C) with ultralow copper loading (0.25&#xa0;mol%) in H<sub>2</sub>O/CH<sub>3</sub>OH (1:1 v/v), &gt; 99.7% bromobenzene conversion was achieved within 2&#xa0;h. This represents a 5.5-fold enhancement compared to conventional oil-bath heating. The catalyst maintained &gt; 95% yields for bromobenzene substrates bearing strong electron-withdrawing/donating groups and ortho-substituents. Remarkably, &gt; 95.4% activity retention was observed after 10 cycles, with copper leaching &lt; 0.01&#xa0;ppm. This work demonstrates that Cu/BP efficiently activates C–Br bonds through synergistic dielectric energy localization and interfacial charge transfer (P → Cu). It provides a new strategy for designing green, stable non-precious metal catalysts for microwave-driven reactions.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Cu-supported black phosphorus nanosheets for high-performance microwave-assisted catalytic bromobenzene coupling: a mechanistic study

  • 期刊论文

  • 发表日期：

    2026年1月8日

查看全文
  • Guoning Fu,
  • Cheng Peng,
  • Wei Wu,
  • Tianying Xiong,
  • Fanghui Lv,
  • Kuan Li,
  • Dong Liu

摘要

Copper-based catalysts for Suzuki coupling reactions face limitations in efficiency and stability, while conventional palladium catalysts require high costs and harsh conditions. To address these challenges, we developed a bifunctional copper-loaded black phosphorus (Cu/BP) material. Initially, a series of Cu/BP catalysts (1–5 wt% Cu) were synthesized via wet chemical reduction. Subsequently, catalytic performance was evaluated using vector network analysis and a microwave catalysis system. Key results were obtained: Cu/BP-3 exhibited exceptional microwave absorption (minimum reflection loss: − 36.31 dB; effective bandwidth: 6.64 GHz). Under microwave heating (90 °C) with ultralow copper loading (0.25 mol%) in H2O/CH3OH (1:1 v/v), > 99.7% bromobenzene conversion was achieved within 2 h. This represents a 5.5-fold enhancement compared to conventional oil-bath heating. The catalyst maintained > 95% yields for bromobenzene substrates bearing strong electron-withdrawing/donating groups and ortho-substituents. Remarkably, > 95.4% activity retention was observed after 10 cycles, with copper leaching < 0.01 ppm. This work demonstrates that Cu/BP efficiently activates C–Br bonds through synergistic dielectric energy localization and interfacial charge transfer (P → Cu). It provides a new strategy for designing green, stable non-precious metal catalysts for microwave-driven reactions.