Mo2N Enhanced Fenton-Like Process: Role of Mo Reducibility and N Adsorption

IF 2.3 4区化学 Q3 CHEMISTRY, PHYSICAL

Catalysis Letters Pub Date : 2025-09-03 DOI:10.1007/s10562-025-05150-1

Shiqi Chen, Zhixuan Huang, Wentao He, Xinyu Wang, Zhiwei Yang, Jing Zhang

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引用次数: 0

Abstract

Molybdenum nitride, because of the strong metal-support interaction between nitrogen and the metal, exhibits activity superior to that of bare metals, demonstrating its effectiveness as a co-catalyst to address the slow kinetics of the iron reduction in the Fenton process. Here, we introduced Mo₂N as a co-catalyst to accelerate the cycles of Fe³⁺/Fe²⁺ within a Fenton-like system consisting of Fe³⁺ and H₂O₂, thereby enhancing the activation of hydrogen peroxide to generate reactive oxygen species (ROS). The system demonstrates excellent recyclability and stability. XPS spectroscopic analyses reveal that Mo(III) and Mo(IV) species on the Mo₂N surface are capable of reducing free Fe(III), while FTIR analyses show nitrogen (N) and nitrogen oxide (NO_x) facilitate the adsorption and coordination of iron. Both homogeneous and heterogeneous reduced iron species are active in the activation of H₂O₂. EPR spectroscopy further confirms that the primary ROS generated are hydroxyl radicals (·OH) and superoxide anions (·O₂⁻). This study not only underscores the feasibility of Mo₂N-based Fenton-like systems but also provides a new strategy for promoting the practical application of Fenton chemistry.

Graphical Abstract

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Mo2N增强类fenton工艺：Mo还原性和N吸附的作用

氮化钼，由于氮与金属之间强烈的金属-支撑相互作用，表现出比裸金属更强的活性，证明了它作为助催化剂解决Fenton过程中铁还原缓慢动力学的有效性。在这里，我们引入Mo2N作为助催化剂来加速Fe3+/Fe2+在由Fe3+和H2O2组成的fenton类体系中的循环，从而增强过氧化氢的活性，产生活性氧（ROS）。该系统具有良好的可回收性和稳定性。XPS光谱分析表明，Mo2N表面的Mo（III）和Mo（IV）能够还原游离Fe(III)，而FTIR分析表明，氮(N)和氮氧化物（NOx）有利于铁的吸附和配位。均相和非均相还原铁都能激活H2O2。EPR光谱进一步证实，生成的主要活性氧是羟基自由基（·OH）和超氧阴离子（·O2−）。该研究不仅强调了基于mo2n的类Fenton体系的可行性，而且为促进Fenton化学的实际应用提供了新的策略。图形抽象

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来源期刊

Catalysis Letters 化学-物理化学

CiteScore

5.70

自引率

3.60%

发文量

327

审稿时长

1 months

期刊介绍： Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis. The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.