A Boost for Fenton Chemistry with Boron

  • Author: Angewandte Chemie International Edition
  • Published Date: 30 September 2020
  • Source / Publisher: Angewandte Chemie International Edition/Wiley-VCH
  • Copyright: Wiley-VCH GmbH
thumbnail image: A Boost for Fenton Chemistry with Boron

Systems based on the Fenton reaction are useful for water treatment. In this approach, hydrogen peroxide (H2O2) and iron-based catalysts are used to produce reactive oxygen species (ROS), which then react with organic contaminants and cause their degradation. Such systems are driven by the Fe(III)/Fe(II) redox cycle. However, the traditional Fenton reaction is hampered by the sluggish kinetics of Fe(III) reduction to Fe(II).

Shaobin Wang, Xiaoguang Duan, The University of Adelaide, Australia, and colleagues have developed a new Fenton-like system for green oxidation that uses elemental boron to accelerate the Fe(III)/Fe(II) conversion. The system consists of crystalline boron, Fe(III), and H2O2. B12 icosahedra in the crystalline boron sacrifice electrons to promote rapid Fe(III)/Fe(II) circulation (reactions pictured below). H2O2 is then decomposed by Fe(II) to produce hydroxyl radicals, which engage in secondary oxidation reactions with organic pollutants.


Compared to classical Fenton systems, the accumulation of Fe(III) and the precipitation of iron oxyhydroxides are avoided. The boron/Fe(III)/H2O2 system rapidly degrades a wide range of persistent organic pollutants without a decline in efficiency. The system also avoids the secondary pollution induced by conventional organic or metal-based reducing agents.



Article Views: 4618

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

If you would like to reuse any content, in print or online, from ChemistryViews.org, please contact us first for permission and consult our permission guidance prior to making your request

Follow on Facebook Follow on Twitter Follow on YouTube Follow on LinkedIn Follow on Instagram RSS Sign up for newsletters

Magazine of Chemistry Europe (16 European Chemical Societies) published by Wiley-VCH