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Article
Engineering, Chemical
Zi-Chen Zhang et al.
Summary: Fe-based MOF S-BUC-21(Fe) exhibited superior catalytic activity in peroxymonosulfate (PMS) activation for the removal of atrazine (ATZ), achieving complete degradation within 20 min. The reactive species generated through the Fe2+/Fe3+ cycle, including SO4??-, ??OH, ??O2???, and 1O2, played major roles in the ATZ degradation process. Additionally, the quantification and generation pathways of 1O2 were revealed, and S-BUC-21(Fe) showed outstanding stability and reusability.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Physical
Yihui Li et al.
Summary: In this study, bimetallic Fe/Mn-loaded hydroxyl-rich biochar (FeMn-OH-BC) is synthesized to activate peroxymonosulfate (PMS) through nonradical-dominated pathways for degrading organic pollutants. The FeMn-OH-BC exhibits excellent catalytic activity at a wide range of pH conditions and is not inhibited by various anions. Electron paramagnetic resonance measurements and quenching tests confirm that O-1(2) is the major reactive oxygen species generated from FeMn-OH-BC based PMS activation.
Article
Chemistry, Physical
Xin Guo et al.
Summary: Integrating the merits of the substrate and active sites with the water matrix is crucial for designing novel catalysts for advanced oxidation processes. A sandwich-like hetero-structure catalyst showed excellent decontamination performance under high salinity conditions, degrading bisphenol A with nearly 100% efficiency within 10 minutes and high turnover frequency.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Engineering, Environmental
Feng Zhang et al.
Summary: Bimetal-based tungstate nanomaterials, specifically Co-Fe based CoxFe1-xWO4, were discovered as efficient peroxymonosulfate (PMS) activators for organic pollutant degradation in wastewater. Among them, the Co0.70Fe0.30WO4 nanocatalyst demonstrated the best performance in degrading sulfamethoxazole (SMX) at pH = 7 and T = 25 degrees C. The study also investigated the synergy between Co and Fe in the Co0.70Fe0.30WO4/PMS system and the relationship between surface elemental composition and catalytic activities, providing a novel avenue for highly efficient PMS activator development.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Taigang Ma et al.
Summary: This paper presents a new strategy for obtaining excellent N-doped carbon-based persulfate activators and deepens the insight into the mechanism of PDS activation by N-doped carbon materials. A series of N-doped carbon materials were prepared by carbonizing polyaniline (PANI), polypyrrole (PPy), and PANI-PPy copolymers. The result shows that the copolymer-derived carbon materials exhibit superior peroxydisulfate (PDS) catalytic activity, and the main reaction pathways are identified as singlet oxygen (1O2) and electron transfer.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Xudong Yang et al.
Summary: A hybrid material Co3O4-x/WO2.72 was prepared to modulate the electron structure of Co-3d, which exhibited high catalytic activity for degradation of organic contaminants, showing great potential for practical applications.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Ke-An Zhu et al.
Summary: Antibiotic contaminants in water can cause environmental damage and potential harm to human health. This study developed an efficient peroxymonosulfate (PMS) activation system (FeCN) to purify antibiotic-polluted water. The system showed high degradation efficiency of sulfamethoxazole (SMX) through the attack of active atoms by h+, center dot O2-, and 1O2, resulting in simultaneous degradation and detoxification. The FeCN+PMS/vis system also demonstrated resistance to environmental water bodies and wide applicability in degrading various pollutants, with chlorine significantly enhancing SMX removal and mineralization efficiency. This research showcases the potential of FeCN+PMS/vis system in treating antibiotic-contaminated wastewater.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Multidisciplinary Sciences
Qixing Zhou et al.
Summary: This study designs asymmetric Co-O-Bi triple-atom sites in Co-doped Bi2O2CO3 catalyst, which enhances the electron transfer between active sites and enables simultaneous PMS oxidation and reduction. The synergistic effect of SO4 center dot-, center dot OH, and 1O2 achieves efficient removal and mineralization of micropollutants in complex wastewater. This work provides a structural regulation approach for controlling catalytic function and guiding the rational design of Fenton-like catalysts.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Engineering, Chemical
Feng Wang et al.
Summary: Fluorine-free MXene was successfully synthesized by etching the Al layer of MXene using a safer and more environmentally friendly tetramethylammonium hydroxide solution. The prepared fluorine-free MXene exhibited excellent hydrophilicity, more active surface sites, and superior degradation performance of tetracycline hydrochloride compared to fluorine-containing MXene. It also showed high degradation efficiency for doxycycline and oxytetracycline, as well as good reusability and mineralization efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Peng Xu et al.
Summary: A novel CuFe2O4/diatomite composite material was fabricated for efficient removal of typical pesticides using peroxymonosulfate (PMS) activation. The composite material showed improved reactivity and high removal efficiency towards various coexisting substances. Electrochemical measurements confirmed that the composite material enhanced the generation of reactive oxygen species, accelerating the degradation of pesticides.
Article
Chemistry, Physical
Wei Li et al.
Summary: In this study, a novel reactive nanostructured membrane (RNM) with effective peroxymonosulfate activation and enhanced mass transfer rates was synthesized. The membrane integrated nano-Co3O4 as a co-catalyst inside the nanochannel of Ti3C2 MXene and was embedded into a nickel foam support (Co/Ti3C2 RNM). The membrane exhibited high degradation efficiency for 1,4-dioxane and achieved a high permeate flux.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Review
Engineering, Environmental
Daniel T. Oyekunle et al.
Summary: Sulfamethoxazole (SMX), a widely used pharmaceutical, poses a significant threat to water safety and environmental sustainability. Heterogeneous metal and non-metal catalysts activated with persulfates have been proven effective in degrading SMX. This review summarizes the development of these catalysts and their influence on the degradation mechanism of SMX.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Yanshan Wang et al.
Summary: The conversion of digestate into biochar-based catalysts is an effective strategy for disposal and resource utilization. The DMDB-800 catalyst exhibited excellent performance for SMX degradation, with 1O2 oxidation and surface electron transfer identified as critical routes for degradation.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Lin Liang et al.
Summary: This paper presents a method for fabricating high-purity F-free Ti3C2 using the photo-Fenton reaction, which can serve as an ideal material for advanced flexible Li-S batteries.
Article
Engineering, Environmental
Lu Zhang et al.
Summary: By adjusting the composition of the heterostructure, the photoelectrocatalytic performance has been significantly enhanced, leading to efficient degradation of clofibric acid.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Linning Yin et al.
Summary: This study systematically investigated the transformation of pentachlorophenol (PCP) in the heat-activated peroxymonosulfate (PMS) system. The results showed that PMS concentration, temperature, and pH had significant effects on the degradation efficiency of PCP, and SO42- was found to enhance the degradation by promoting the generation of reactive radicals. The mechanisms of different reactions were interpreted through experiments and calculations, and the toxicity of the reaction products was lower than that of PCP.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Yajing Yang et al.
Summary: A novel Bi@BiOx(OH)y-modified oxidized g-C3N4 photocatalyst was successfully prepared via wet chemical reduction under alkaline conditions. The modified photocatalyst showed excellent light response capability, adsorption capacity, and high efficiency in removing tetracycline hydrochloride. These effects were attributed to the specific surface area, active sites, bandgap width, Bi-SPR effect, and BiOx(OH)y electron trap caused by the loaded Bi groups.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Wei Li et al.
Summary: In this study, MXene nano-Co3O4 co-catalyst enriched with oxygen vacancies (O-v) is used as an efficient and stable PMS activator for the removal of 1,4-dioxane (1,4-D) in water treatment. Compared to the traditional NF/Co3O4/PMS system, the NF/MXene-Co3O4/PMS system showed more than four times higher removal efficiency of 1,4-D, with excellent stability and reusability. This work provides a new pathway for the application of MXene in environmental remediation.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Physical
Yanhua Peng et al.
Summary: This study compares the oxidation differences of sulfamethoxazole (SMX) by carbon nanotube (CNT)/peroxymonosulfate (PMS), nanodiamond (ND)/PMS, and PMS direct oxidation systems. The results showed that the reaction rate constant of the CNT/PMS system is significantly higher than the ND/PMS and PMS direct oxidation systems. Product analysis revealed differences in the oxidation mechanism and products among the different oxidation systems. Therefore, the choice of carbon catalyst plays a crucial role in the degradation and toxicity of organic pollutants in wastewater treatment.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Engineering, Environmental
Lingwei Gao et al.
Summary: This study evaluated the effects of various quenchers on the mechanism of a cobalt mediated peroxymonosulfate (Co(II)/PMS) process and found that these quenchers not only quench target reactive species but also cause interference effects. Therefore, caution should be exercised when applying the quenching method to investigate the mechanism of the persulfate-based process.
Article
Engineering, Environmental
Chen Ling et al.
Summary: In this study, sulfide-modified zero-valent iron was used to activate periodate for the removal of sulfadiazine. The S-Fe-0/PI process was found to be highly efficient in removing SDZ, with minimal leaching of iron. Additionally, the process was able to mineralize SDZ and reduce its toxicity.
Article
Multidisciplinary Sciences
Chenchen Meng et al.
Summary: The global shortage of freshwater and inadequate access to clean water have led to the development of efficient technologies for water purification. Heterogeneous catalysis is a highly promising solution and sub-nanometer-confined reactions have been found to achieve unprecedented reaction rates. This study successfully demonstrates the degradation of water contaminants at an incredibly fast rate using a two-dimensional laminate membrane assembled from cobalt-doped titanium oxide nanosheets.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Xianhu Long et al.
Summary: In this study, an electrochemical system was used as a co-catalyst to enhance the activation of peroxymonosulfate for efficient degradation of Sulfamethoxazole. The collaboration of radicals and non-radicals oxidation was found to be responsible for the degradation, with singlet oxygen and Fe(IV) surprisingly involved in the system. The relative contributions of various reactive oxygen species were calculated, and multiple degradation pathways for Sulfamethoxazole were proposed.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Engineering, Environmental
Bo He et al.
Summary: In this study, CuFe2O4 was attached to CuO using hydrothermal and high-temperature calcination methods. The (111) plane of CuO and (112) plane of CuFe2O4 formed a surface heterojunction, which facilitated the adsorption of PMS. The charge transfer and charge density in the CuFe2O4/CuO/PMS system were investigated using density functional theory (DFT) and transmission electron microscope (TEM). The experimental data showed that both nonradical singlet oxygen (1O2) and active radicals (center dot OH, center dot SO4-) were involved in the degradation of CIP. The degradation pathways and intermediates were proposed using Fukui index and liquid chromatography-mass spectrometry (LC-MS). The study also evaluated the bioaccumulation factor and toxic effects of intermediates using toxicity calculation software. CuFe2O4/CuO demonstrated good reusability and stability. Overall, this study provides valuable insights into the mechanisms of organic pollutants degradation using Fe-Cu catalyst and achieved a CIP removal rate of 86.67% under optimal conditions.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Minghui Xiong et al.
Summary: The strong electronic interaction between heterogeneous composite catalysts facilitates the enhancement of catalytic performance. In this study, ultrafine Co3O4 composites supported by rape straw derived biochar (BC) were synthesized for tetracycline hydrochloride (TC) degradation via activating peroxymonosulfate (PMS). Both experimental results and density functional theory (DFT) calculations revealed the mechanism and key active sites involved in the catalytic degradation.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Lele Zhao et al.
Summary: This study investigates the effect of different crystal plane exposures of Co3O4 nanomaterials on the activation of peroxymonosulfate (PMS) in water. It was found that Co3O4-NR with (110) plane exposure showed superior activity in efficiently removing bisphenol A (BPA), with singlet oxygen (O-1(2)) playing a dominant role in the degradation process. The study also explored the evolution of lattice defects (oxygen vacancies) during PMS activation.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Aiwen Wang et al.
Summary: This study successfully addresses the limitations of adsorption technology in fully mineralizing pollutants and the potential health risks from metal ion leakage. A micro-nanoreactor structure is designed with glutaraldehyde crosslinked chitosan as the backbone and encapsulated MOF-derived Co-Fe nitrogen-doped graphitic carbon as the activated PMS reaction center (Co-Fe/NC@GCS). High concentration sulfamethoxazole can be efficiently enriched through electrostatic attraction and hydrogen bonding, and a small amount of PMS can be rapidly activated.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Engineering, Environmental
Xiurong Zhu et al.
Summary: The immobilized CoFe2O4 network showed efficient degradation of sulfa-methoxazole (SMX) with good long-term durability.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Yajing Yang et al.
Summary: The research focuses on improving the photocatalytic activity of oxygen-doped g-C3N4 for organic pollutant removal from water. Oxygen doping changes the physical and chemical properties of g-C3N4, leading to improved photocatalytic efficiency. The study provides insight into the photocatalytic mechanism of oxygen-doped g-C3N4, offering guidance for the design of photocatalysts for water treatment.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Chemistry, Physical
Haoran Song et al.
Summary: A simple and general vacancy defects anchoring strategy was developed for the synthesis of single atom metals, which exhibited excellent performance for peroxymonosulfate activation. The single atom Co catalyst not only showed outstanding performance in PMS activation, but also performed well even under alkaline conditions or in actual river water.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Engineering, Environmental
Jiali Peng et al.
Summary: Graphite can facilitate direct electron transfer from organics to KMnO4, leading to high KMnO4 utilization efficiency. The KMnO4/graphite system mainly extracts electrons from organic contaminants via a one-electron pathway, demonstrating superior reusability and significantly improved KMnO4 utilization efficiency.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Limin Jin et al.
Summary: Experimental and theoretical studies confirmed that Cu-O-3 are the active sites for electro-PMS activation to produce O-1(2) and induce electron transfer for SMX degradation. By anchoring Cu nanoparticles to the Ti3C2Tx nanosheets, the size effects result in HO radicals dominating the SMX degradation process. This study demonstrates a free-standing Cu-SA/Ti3C2Tx nanohybrid filter that could have important applications in addressing the global problem of water pollution.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
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Dahu Ding et al.
CHEMICAL ENGINEERING JOURNAL
(2020)
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Multidisciplinary Sciences
Yi Lu et al.
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Yu Chen et al.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2019)
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Ian L. Pepper et al.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2018)
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Paola Grenni et al.
MICROCHEMICAL JOURNAL
(2018)
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Yuefei Ji et al.
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Mohammad Boshir Ahmed et al.
JOURNAL OF HAZARDOUS MATERIALS
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GP Anipsitakis et al.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2004)
