Nano-island-encapsulated cobalt single-atom catalysts for breaking activity-stability trade-off in Fenton-like reactions

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Янв. 2, 2025

Язык: Английский

---

Oxidative Polymerization in Water Treatment: Chemical Fundamentals and Future Perspectives

Environmental Science & Technology, Год журнала: 2025, Номер unknown

Опубликована: Янв. 6, 2025

For several decades, the methodology of complete destruction organic pollutants via oxidation, i.e., mineralization, has been rooted in real water treatment applications. Nevertheless, this industrially accepted protocol is far from sustainable because excessive input chemicals and/or energy as well unregulated carbon emission. Recently, there have emerging studies on removal a completely different pathway, polymerization, meaning that target undergo oxidative polymerization reactions to generate polymeric products. These collectively shown compared conventional mineralization pathway allows more efficient pollutants, largely reduced chemicals, and suppressed In review, we aim provide comprehensive examination fundamentals process, current state-of-the-art strategies for regulation both kinetic thermodynamic perspectives, resource recovery formed end, limitations process pollutant are discussed, with perspectives future studies. Hopefully, review could not only critical insight advancement polymerization-oriented technologies greener manner but also stimulate paradigm innovations low-carbon treatment.

Язык: Английский

---

Low-peroxide-consumption Fenton-like Systems: The future of advanced oxidation processes

Water Research, Год журнала: 2024, Номер 268, С. 122621 - 122621

Опубликована: Окт. 11, 2024

Conventional heterogeneous Fenton-like systems employing different peroxides have been developed for water/wastewater remediation. However, a large population of consumed during various with low utilization efficiency and associated secondary contamination become the bottlenecks their actual applications. Recent strategies lowering peroxide consumptions to develop economic are primarily devoted effective radical generation subsequent high-efficiency through catalysts/systems engineering, leveraging emerging nonradical oxidation pathways higher selectivity longer life reactive intermediate, as well reactor designs promoting mass transfer decomposition improve yield radicals/nonradicals. comparative review summarizing mechanisms these has not yet published. In this review, we endeavor showcase designated achieving reduction while ensuring high catalytic activity from perspective above strategic mechanisms. An in-depth understanding aspects will help elucidate key consumption. Finally, existing problems put forward, new ideas research directions consumption proposed promote application in wastewater purification.

Язык: Английский

---

Active surface area determines the activity of biochar in Fenton-like oxidation processes

Journal of Hazardous Materials, Год журнала: 2025, Номер 487, С. 137272 - 137272

Опубликована: Янв. 17, 2025

Язык: Английский

---

Selectively recovering rare earth elements with carboxyl immobilized metal-organic framework from ammonium-rich wastewater

Environmental Research, Год журнала: 2024, Номер 262, С. 119890 - 119890

Опубликована: Авг. 30, 2024

Язык: Английский

---

Transforming organics via polymerization pathway in advanced oxidation processes: A review

Опубликована: Фев. 21, 2025

Язык: Английский

---

Surface-hydroxylated single-atom catalyst with an isolated Co-O-Zn configuration achieves high selectivity in regulating active species

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Март 11, 2025

Single-atom catalysts (SACs) are emerging as potent tools for the selective regulation of active species, offering substantial promise green and sustainable Fenton catalysis. However, current SACs face limitations due to specificity their supports, which only allow within certain oxidant systems. This constraint makes targeted across different systems challenging. In response, this study designs a SAC, termed CoSAs-ZnO, featuring surface hydroxylation an isolated asymmetric Co-O-Zn configuration. SAC can realize nearly 100% generation sulfate radicals (SO4•−) singlet oxygen (1O2) in peroxymonosulfate (PMS) peracetic acid (PAA) systems, respectively. Moreover, PMS-activated system efficiently treat electron-deficient-dominated refractory benzoic wastewater, achieving 100.0% removal multiple consecutive pilot-scale experiments. The PAA-activated facilitates rapid conversion benzyl alcohol benzaldehyde, with high selectivity 89.0%. Detailed DFT calculations reveal that hydroxyl groups on ZnO play critical role modulating adsorption configurations oxidants, thus enabling specific species each system. provides insights into design multifunctional applications paves way deployment wastewater treatment high-value chemical conversion. supports. Here, authors synthesised selectively generate

Язык: Английский

---

Deciphering the Novel Picolinate-Mn(II)/peroxymonosulfate System for Sustainable Fenton-like Oxidation: Dominance of the Picolinate-Mn(IV)-peroxymonosulfate Complex

Environmental Science & Technology, Год журнала: 2024, Номер unknown

Опубликована: Сен. 14, 2024

A highly efficient and sustainable water treatment system was developed herein by combining Mn(II), peroxymonosulfate (PMS), biodegradable picolinic acid (PICA). The micropollutant elimination process underwent two phases: an initial slow degradation phase (0-10 min) followed a rapid (10-20 min). Multiple evidence demonstrated that PICA-Mn(IV) complex (PICA-Mn(IV)*) generated, acting as conductive bridge facilitating the electron transfer between PMS micropollutants. Quantum chemical calculations revealed readily oxidized PICA-Mn(II)* to PICA-Mn(IV)*. This intermediate then complexed with produce PICA-Mn(IV)-PMS*, elongating O-O bond of increasing its oxidation capacity. primary transformation mechanisms typical micropollutants mediated PICA-Mn(IV)-PMS* include oxidation, ring-opening, cleavage, epoxidation reactions. toxicity assessment results showed most products were less toxic than parent compounds. Moreover, Mn(II)/PICA/PMS resilience matrices high efficiency in real environments. Notably, PICA-Mn(IV)* exhibited greater stability longer lifespan traditional reactive oxygen species, enabling repeated utilization. Overall, this study innovative, sustainable, selective system, i.e., Mn(II)/PICA/PMS, for decontamination, highlighting critical role situ generated Mn(IV).

Язык: Английский

---

Activation of peroxydisulfate by magnetic graphene oxide nanocomposites through a Fe(II)-coordinated nonradical pathway for selective degradation of organic contaminants

Journal of environmental chemical engineering, Год журнала: 2025, Номер 13(2), С. 116114 - 116114

Опубликована: Март 10, 2025

Язык: Английский

---

Polymerization deposition route governed by the coordination environment of interface asymmetric oxygen vacancy for efficient BPA removal via a Fenton-like reaction

Separation and Purification Technology, Год журнала: 2025, Номер unknown, С. 132824 - 132824

Опубликована: Апрель 1, 2025

Язык: Английский

---