Various organic pollution is posing serious threat on the sustainable society development. Due to the strong oxidative ability of reactive oxygen species (ROSs), advanced oxidation processes (AOPs) have outperformed as a promising strategy owing to their high efficiency in eliminating organic pollution. As a typical representative, heterogeneous Fenton-like oxidation motivated by hydrogen peroxide (HO) activation via iron-based catalysts is attracting much attention because of their superiorities over conventional homogeneous Fenton oxidations. Nevertheless, several challenges need to be tackled for expanding its applications, including low pollutants/oxidant adsorption, low hydroxyl radical (·OH, the main ROS) generation because of slow Fe/Fe cycle and limited exposed active sites, limited ROSs utilization, insufficient intermediate diffusion, etc. To address these challenges, various materials construction strategies have been explored in recent years. Herein, based on the reported studies mainly in recent five years, we give an in-depth overview and discussion on these research. Firstly, several newly iron-based heterogeneous Fenton-like oxidation catalysts were briefly introduced. Then, we laid emphasis on various strategies of the materials design and their mechanisms in improving the catalytic performance involving dual reaction center (DRC) and bimetallic catalytic center (BCC) construction, Fe substitution, vacancies introduction, composite, supported, and confined catalysts, and catalysts with synergistic effect. Finally, the possible future research direction and perspective were proposed. It’s expected that this review paper could provide some insight on the design of heterogeneous Fenton-like oxidation catalysts for the relevant researchers.

中文翻译：

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提高铁基催化剂在污染物降解中激活非均相类芬顿氧化的性能策略：从材料结构设计的角度


各种有机污染正对社会可持续发展构成严重威胁。由于活性氧（ROS）的强氧化能力，高级氧化过程（AOP）因其在消除有机污染方面的高效性而成为一种有前景的策略。作为典型代表，由铁基催化剂过氧化氢（H2O）活化驱动的非均相类芬顿氧化因其比传统均相芬顿氧化的优越性而备受关注。然而，为了扩大其应用，需要解决一些挑战，包括污染物/氧化剂吸附低、由于Fe/Fe循环缓慢和暴露的活性位点有限而产生的羟基自由基（·OH，主要ROS）低、ROS利用率有限、活性氧不足等。为了应对这些挑战，近年来人们探索了各种材料构建策略。本文主要根据近五年来的研究报道，对这些研究进行深入的综述和讨论。首先，简要介绍了几种新型铁基非均相类芬顿氧化催化剂。然后，我们重点研究了材料设计的各种策略及其提高催化性能的机制，包括双反应中心（DRC）和双金属催化中心（BCC）构建、Fe取代、空位引入、复合、负载和限域催化剂，和具有协同效应的催化剂。最后提出了未来可能的研究方向和展望。希望这篇综述论文能够为相关研究人员提供有关非均相类芬顿氧化催化剂设计的一些见解。