Singlet oxygen mediated iron-based Fenton-like catalysis under nanoconfinement

作者：Zhichao Yang, Jieshu Qian, Anqing Yu, Bingcai Pan · 发表于：Proceedings of the National Academy of Sciences · 年份：2019 · DOI：10.1073/pnas.1819382116 · 被引用次数：869 · 研究领域：Electrocatalysts for Energy Conversion、Advanced oxidation water treatment、Environmental remediation with nanomaterials

nanoparticles distributed inside multiwalled carbon nanotubes with inner diameter of ∼7 nm. Unlike the traditional Fenton-like processes, this delicately designed system was shown to selectively oxidize the organic dyes that could be adsorbed with oxidation rates linearly proportional to the adsorption affinity. It also exhibited remarkably higher degradation activity (22.5 times faster) toward a model pollutant methylene blue than its nonconfined analog. Strikingly, the unforeseen stability at pH value up to 9.0 greatly expands the use of Fenton-like catalysts in alkaline conditions. This work represents a fundamental breakthrough toward the design and understanding of the Fenton-like system under nanoconfinement, might cause implications in other fields, especially in biological systems.