Scholarlink

<p>Bromine (Br), mostly extracted from nature, plays an essential role in the form of organobromides in various goods, including electronics, vehicles and furniture. At the same time, Br is continuously released into the environment in the form of persistent brominated pollutants upon the retirement of those goods, causing severe environmental consequences and loss of resources. Here we propose a catalytic strategy that enables the selective and mild-condition conversion of all organobromides present in wastes into renewed bromides for Br recycling. It employs Ullmann-type reactions enabled by inexpensive Cu(I), simple ligands and hydroxides in DMSO–H<sub>2</sub>O solvent. This strategy achieved &gt;95% bromide yields at a temperature ≤120 °C for complex real-world Br-laden wastes. It can produce bromide-rich solution amenable to Br<sub>2</sub> production, as demonstrated by the inorganicization–evaporation–oxidation process, and recoverable debrominated solids with preserved chemical states. Mechanistic studies revealed a full debromination framework encompassing diverse activated pathways. This work provides a viable approach for Br recycling and potentially facilitates a circular and sustainable anthropogenic Br flow.</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

Catalytic bromine recycling from waste

  • 期刊论文

  • 发表日期：

    2026年2月24日

查看全文
  • Qingming Song,
  • Bofan Cui,
  • Xuehong Yuan,
  • Ya Liu,
  • Jia Li,
  • Zhenming Xu

摘要

Bromine (Br), mostly extracted from nature, plays an essential role in the form of organobromides in various goods, including electronics, vehicles and furniture. At the same time, Br is continuously released into the environment in the form of persistent brominated pollutants upon the retirement of those goods, causing severe environmental consequences and loss of resources. Here we propose a catalytic strategy that enables the selective and mild-condition conversion of all organobromides present in wastes into renewed bromides for Br recycling. It employs Ullmann-type reactions enabled by inexpensive Cu(I), simple ligands and hydroxides in DMSO–H2O solvent. This strategy achieved >95% bromide yields at a temperature ≤120 °C for complex real-world Br-laden wastes. It can produce bromide-rich solution amenable to Br2 production, as demonstrated by the inorganicization–evaporation–oxidation process, and recoverable debrominated solids with preserved chemical states. Mechanistic studies revealed a full debromination framework encompassing diverse activated pathways. This work provides a viable approach for Br recycling and potentially facilitates a circular and sustainable anthropogenic Br flow.