4.7 Review

Recent advances in the single-atom catalysts for persulfate activation and pollutant oxidation: A review

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Fe-N/C single-atom catalysts with high density of Fe-Nx sites toward peroxymonosulfate activation for high-efficient oxidation of bisphenol A: Electron-transfer mechanism

Ting Yang et al.

Summary: A high-efficient iron-based heterogeneous catalyst with atomically dispersed Fe-Nx sites was prepared for the activation of peroxymonosulfate (PMS). Single-atom iron-nitrogen-carbon catalysts exhibited superior performance in catalytic activation of PMS, with Fe-Nx sites confirmed as the main active sites.

CHEMICAL ENGINEERING JOURNAL (2021)

Article Engineering, Environmental

Peroxydisulfate activation by atomically-dispersed Fe-Nx on N-doped carbon: Mechanism of singlet oxygen evolution for nonradical degradation of aqueous contaminants

Ningjie Du et al.

Summary: This study synthesized a catalyst of single-atom iron anchored on nitrogen-doped carbon and demonstrated its high efficiency and strong resistance in heterogeneous catalysis for CAP degradation. The discovery provides a new catalytic approach for the selective removal of organic pollutants in complex water matrices.

CHEMICAL ENGINEERING JOURNAL (2021)

Article Thermodynamics

Nano-catalytic heterogeneous reactive distillation for algal biodiesel production: Multi-objective optimization and heat integration

Biswarup Mondal et al.

Summary: This study introduces an optimized design of a reactive distillation column for producing algal biodiesel, aiming to maximize biodiesel purity and minimize total costs and CO2 emissions by using a heterogeneous nano-catalyst Ca(OCH3)2. The performance of the optimal RD column is improved by adding a decanter and a vapor recompression arrangement, resulting in a more efficient operation compared to the traditional RD column.

ENERGY CONVERSION AND MANAGEMENT (2021)

Article Engineering, Environmental

Persulfate Oxidation of Sulfamethoxazole by Magnetic Iron-Char Composites via Nonradical Pathways: Fe(IV) Versus Surface-Mediated Electron Transfer

Jun Liang et al.

Summary: This study developed two efficient magnetic iron-char composites and investigated the efficacy of nonradical pathways for PS activation in degrading SMX. The BCFe-400/PS system showed high stability and efficiency in continuous degradation of SMX, while the BCFe-700/PS system displayed recovered reactivity after thermal treatment. Both systems exhibited high performances for SMX removal in various water matrices, highlighting the great merits of nonradical activation methods.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2021)

Article Engineering, Environmental

Unraveling the High-Activity Origin of Single-Atom Iron Catalysts for Organic Pollutant Oxidation via Peroxymonosulfate Activation

Yaowen Gao et al.

Summary: Single-atom iron catalyst prepared via a cascade anchoring method exhibits exceptional catalytic activity in peroxymonosulfate (PMS) conversion for organic pollutant oxidation, with the high-activity origin attributed to the Fe-pyridinic N-4 moiety that significantly increases active sites for PMS activation.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2021)

Article Chemistry, Physical

Enhanced Fenton-like degradation of sulfadiazine by single atom iron materials fixed on nitrogen-doped porous carbon

Wu Yang et al.

Summary: The synthesis and application of single-atom iron catalysts on nitrogen-doped porous carbon materials for heterogeneous Fenton-like reactions showed remarkable catalytic activity and stability. Various characterization techniques were used to analyze the physical and chemical properties of the catalyst, while degradation experiments revealed the reaction mechanism and degradation products.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2021)

Review Engineering, Environmental

Recent advances in single-atom catalysts for advanced oxidation processes in water purification

Bingkun Huang et al.

Summary: This review summarizes the emerging synthetic and characterization strategies of Single-atom catalysts (SACs) and analyzes their development tendency in the environmental field and advanced oxidation processes (AOPs). The advantages of SACs in generating reactive oxygen species and constructive opinions for their stability and activity are discussed. Lastly, the opportunities and challenges faced by SACs and its future development direction in the AOPs catalytic field are proposed.

JOURNAL OF HAZARDOUS MATERIALS (2021)

Article Engineering, Environmental

Fe-based single-atom catalysis for oxidizing contaminants of emerging concern by activating peroxides

Zhe Zhou et al.

Summary: The study introduced a single-atom Fe catalyst, SAFe-OCN, which exhibited excellent performance in degrading various water contaminants effectively and efficiently, while demonstrating high stability in oxidation processes.

JOURNAL OF HAZARDOUS MATERIALS (2021)

Article Chemistry, Multidisciplinary

Modulating Coordination Environment of Single-Atom Catalysts and Their Proximity to Photosensitive Units for Boosting MOF Photocatalysis

Xing Ma et al.

Summary: A general and facile strategy for the construction of high-loading single-atom catalysts with a tunable coordination microenvironment has been developed based on metal-organic frameworks. The well-accessible and atomically dispersed metal sites possess close proximity to photosensitive units, greatly accelerating charge transfer and promoting photocatalysis. The optimized Ni-1-S/MOF with a unique Ni(I) microenvironment presents excellent photocatalytic H-2 production activity, surpassing other counterparts.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

Review Chemistry, Physical

Density Functional Theory Calculations for Insight into the Heterocatalyst Reactivity and Mechanism in Persulfate-Based Advanced Oxidation Reactions

Panpan Zhang et al.

Summary: This review highlights recent advances in theoretical simulations for persulfate-based advanced oxidation processes, focusing on catalyst properties, persulfate activation mechanism, and degradation mechanism of organic contaminants. The study also discusses descriptors in computational studies and structure-performance relationships within the field. Challenges and future research focuses of DFT simulations in PS-AOPs are proposed, including evaluation of catalyst properties, elucidation of activation mechanisms, and rational design of on-demand catalysts.

ACS CATALYSIS (2021)

Article Engineering, Environmental

Photoelectrocatalytic generation of miscellaneous oxygen-based radicals towards cooperative degradation of multiple organic pollutants in water

Yurou Zhou et al.

Summary: In this study, MoS2 nanoflakes were used as a photoanode in a photoelectrochemical system to achieve simultaneous degradation of different organic pollutants by generating oxysulfur radicals, superoxide, and hydroxyl radicals. The selective PEC degradation efficiency of different organic pollutants under mixed substrates conditions was found to vary, with CPF exhibiting the highest degradation efficiency. The generation of various reactive oxygen species and their cooperative degradation of pollutants were substrate-dependent.

WATER REUSE (2021)

Review Chemistry, Multidisciplinary

Single-atom catalysis in advanced oxidation processes for environmental remediation

Yanan Shang et al.

Summary: Carbon-based single atom catalysts show high performances and efficiency in environmental catalysis, but there is a lack of comprehensive research on their catalytic sites and mechanisms in advanced oxidation processes, which is necessary for further exploration.

CHEMICAL SOCIETY REVIEWS (2021)

Article Multidisciplinary Sciences

Nano-catalytic behavior of highly efficient and regenerable mussel-inspired Fe3O4@CFR@GO and Fe3O4@CFR@TiO2 magnetic nanospheres in the reduction of Evans blue dye

Usha Jinendra et al.

Summary: Fe3O4@CFR@GO and Fe3O4@CFR@TiO2 nanocomposites were successfully fabricated by hydrothermal method and showed high efficiency in adsorptive degradation of Evans blue dye, with maximum adsorption capacities of 0.1435 mg/g and 9.345 mg/g respectively. Kinetic studies revealed that the adsorption of Evans blue dye followed a pseudo-first-order kinetic model.

HELIYON (2021)

Article Chemistry, Physical

Atomically dispersed cobalt on graphitic carbon nitride as a robust catalyst for selective oxidation of ethylbenzene by peroxymonosulfate

Jiaquan Li et al.

Summary: This study presents a controllable preparation of Co-based single-atom catalyst anchored on a graphitic carbon nitride support, which is successfully applied for the selective oxidation of ethylbenzene to derive acetophenone with over 95% conversion and selectivity under highly selective and environmentally friendly conditions. The oxidation of ethylbenzene into acetophenone is attributed to the oxidative radicals generated from the decomposition of PMS via electron transfer, highlighting the potential of this catalyst in the oxidation of hydrocarbons.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

Review Engineering, Environmental

Persulfate-Based Advanced Oxidation: Critical Assessment of Opportunities and Roadblocks

Jaesang Lee et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2020)

Review Chemistry, Physical

Carbon-Based Single-Atom Catalysts for Advanced Applications

Manoj B. Gawande et al.

ACS CATALYSIS (2020)

Article Engineering, Environmental

The Intrinsic Nature of Persulfate Activation and N-Doping in Carbocatalysis

Wei Ren et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2020)

Article Engineering, Environmental

Persulfate activation by two-dimensional MoS2 confining single Fe atoms: Performance, mechanism and DFT calculations

Li-Zhi Huang et al.

JOURNAL OF HAZARDOUS MATERIALS (2020)

Article Chemistry, Multidisciplinary

Boron-doped Fe-N-C single-atom nanozymes specifically boost peroxidase-like activity

Lei Jiao et al.

NANO TODAY (2020)

Article Multidisciplinary Sciences

Unraveling the coordination structure-performance relationship in Pt1/Fe2O3 single-atom catalyst

Yujing Ren et al.

NATURE COMMUNICATIONS (2019)

Article Chemistry, Multidisciplinary

Defect Effects on TiO2 Nanosheets: Stabilizing Single Atomic Site Au and Promoting Catalytic Properties

Jiawei Wan et al.

ADVANCED MATERIALS (2018)

Review Engineering, Environmental

Critical review of the science and sustainability of persulphate advanced oxidation processes

Ikechukwu A. Ike et al.

CHEMICAL ENGINEERING JOURNAL (2018)

Review Engineering, Environmental

Activation of persulfate (PS) and peroxymonosulfate (PMS) and application for the degradation of emerging contaminants

Jianlong Wang et al.

CHEMICAL ENGINEERING JOURNAL (2018)

Article Chemistry, Multidisciplinary

Single atom accelerates ammonia photosynthesis

Pengcheng Huang et al.

SCIENCE CHINA-CHEMISTRY (2018)

Review Chemistry, Physical

Single Atom Catalysts on Carbon-Based Materials

Camila Rivera-Carcamo et al.

CHEMCATCHEM (2018)

Article Engineering, Environmental

Synergistic degradation of phenols using peroxymonosulfate activated by CuO-Co3O4@MnO2 nanocatalyst

Aimal Khan et al.

JOURNAL OF HAZARDOUS MATERIALS (2017)

Article Chemistry, Multidisciplinary

Single-atom catalysis of CO oxidation using Pt1/FeOx

Botao Qiao et al.

NATURE CHEMISTRY (2011)