A nonradical oxidation process via metal-free peroxymonosulfate (PMS) activation has recently attracted considerable attention for organic pollutant degradation; however, the origin of singlet oxygen (1O2) generation still remains controversial. In this study, nitrogen-doped carbon nanosheets (NCN-900) derived from graphitic nitride were developed PMS and elucidation 1O2 production. With a large specific surface area (1218.7 m2 g–1) high nitrogen content (14.5 at %), NCN-900 exhibits...

To achieve high efficiency and low consumption for water treatment in the Fenton reaction, we use surface oxygen vacancies (OVs) as electron temporary residences to construct a dual-reaction-center (RDC) Fenton-like catalyst with abundant electron-rich/poor areas consisting of OV-rich Co-ZnO microparticles (OV-CoZnO MPs). The lattice-doping Co into ZnO wurtzite results formation OVs unpaired electrons (electron-rich OVs) electron-deficient Co3+ sites according structural electronic...

Abstract Single‐atom catalysts (SACs) are widely investigated in Fenton‐like reactions for environmental remediation, wherein their catalytic performance can be further improved by coordination structure modulation, but the relevant report is rare. Herein, a series of atomically dispersed cobalt with diverse numbers (denoted as CoN x , represents nitrogen number) synthesized and peroxymonosulfate (PMS) conversion explored. The specific activity found to dependent on number single atomic Co...

As an efficient active oxidant for the selective degradation of pollutants in wastewater, high-valent copper species Cu(III) with persulfate activation has attracted substantial attention some Cu-based catalysts. However, systematic study a catalyst structure and mechanism about peroxydisulfate (PDS) is challenging owing to coexistence multiple Cu structural symmetry PDS. Herein, we anchored atom two pyridinic N atoms synthesize single-atom (CuSA-NC). Experimental characterizations...

Exploring the role of nonmetal heteroatoms doping in single-atom catalysts for peroxymonosulfate (PMS) activation is highly significant understanding and developing PMS activators. Herein, a novel Mn (Mn–N4) catalyst with electron-rich O, S self-doping (MnSA–N–CO,S) was synthesized via facile scalable impregnation-annealing method, which exhibited admirable capability to activate ibuprofen (IBU) degradation reaction constant as high 0.225 min–1 (10.32 times higher than carbon matrix). It...

Long-term efficient separation of highly emulsified oily wastewater is challenging. Reported herein the preparation a reinforced superhydrophilic, underwater superoleophobic membrane with demulsification properties using active iron nanoparticles in situ generated on polydopamine (PDA)/polyethylenimine (PEI)-modified polyvinylidene fluoride (PVDF) surface. A stable zwitterionic structure fabricated surface and provides it an excellent capability binding hydration layer, leading to enhanced...

Abstract Emerging single‐atom catalysts (SACs) are promising in water remediation through Fenton‐like reactions. Despite the notable enhancement of catalytic activity increasing density active sites, performance improvement is not solely attributed to increase number sites. The variation behaviors stemming from increased atomic particularly elusive and deserves an in‐depth study. Herein, Fe (Fe SA ‐CN) with different distances ( d site ) between adjacent sites constructed by controlling...

Abstract An innovative strategy for synthesizing novel dual-reaction-center (DRC) catalysts from chicken manure (CM) biochar to purify wastewater that contained emerging contaminants (ECs) is proposed synchronously address the release of ECs and improper disposal livestock manure. A series characterization techniques reveal formation a special C-O-Ca bond bridge (cation-π) structure on resourcelized CM nanosheets (RCM NSs). RCM NSs exhibit distinct selectivity anti-interference capability...

The search for high-active and long-lasting materials is of paramount significance elimination aqueous organic contaminants. Herein, a nitrogen-coordinated cobalt embedded in hollow carbon polyhedron (marked as NCoHCP) has been synthesized by thermal transformation core–shell-architectured ZIF-8@ZIF-67. X-ray photoelectron spectroscopy (XPS), absorption (XAS), theoretical calculations confirmed the coordination Co atom with one N NCoHCP. resultant NCoHCP catalyst delivers extremely superior...

In a nanoconfined space, the chemical/physical properties of molecules/ions can be fundamentally changed; strategy nanoconfinement thus offers rich opportunities for development an efficient catalytic process. Peroxymonosulfate (PMS) involved in advanced oxidation processes is promising technology abatement recalcitrant pollutants. Radical, singlet oxygen, and high-valent cobalt species are, hitherto, reckoned as predominant reactive pollutant degradation cobalt-catalyzed reaction systems....

Achieving satisfactory organic pollutant oxidation with a low concentration of peroxymonosulfate (PMS) is vital for persulfate-involved advanced processes to reduce resource consumption and avoid excessive sulfate anion (SO42- ) production. Herein, efficient conversion dissolved oxygen (DO) over single-atomic Fe-N3 O1 sites anchored on carbon nitride contaminant degradation fulfilled, triggered by PMS (0.2 mm). Experimental theoretical results reveal that the preferentially adsorbed onto...

Improper disposal of waste biomass and an increasing number emerging contaminants (ECs) in water environment are universal threats to the global environment. Here, we creatively propose a sustainable strategy for direct resource transformation livestock manure (LM) into innovative catalyst (Fe-CCM) self-purification with zero external consumption. ECs can be rapidly degraded this system at ambient temperature atmospheric pressure, without any oxidants or energy input, accompanied by H2O...

High salinity has plagued wastewater treatment for a long time by hindering pollutant removal, thereby becoming global challenge water pollution control that is difficult to overcome even with massive energy consumption. Herein, we propose novel process rapid salinity-mediated self-purification in dual-reaction-centers (DRC) system cation–π structures. In this process, local hydrogen bond networks of H 2 O molecules can be distorted through the mediation salinity, opening channels...

Excessive consumption of resources and energy is inevitable in a classical Fenton reaction due to the demand for electron donors or acceptors (H2O2) existence rate-limiting steps. In this work, we propose an innovative strategy solve key scientific problem by utilizing organic pollutants dissolved oxygen (DO) naturally present wastewater through newly developed carbonized metal–organic framework-coated zero-valent Cu catalyst (ZVC@CMOF). It has been found that formation C–O–Cu bond bridge on...

Removing micropollutants in real water is a scientific challenge due to primary dissolved organic carbon (DOC) and high energy consumption of current technologies. Herein, we develop self-purification process for the preferential destruction various municipal wastewater, raw drinking water, ultrapure with humic acid (HA) driven by surface microelectronic field Fe0-FeyCz/Fex-GZIF-8-rGO without any additional input. It was verified that strongly polar complex consisting an electron-rich HA/DOC...