Journal of Water Process Engineering
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2026
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IF 6.7
Xiao Liu,Runze He,Jiachen Song,Xinyu Hou,Fei Wang
With the growing severity of environmental pollution, the treatment of organic wastewater and waste plastic bottles has become global concerns. This study explored the feasibility of synthesizing metal-organic composite catalysts using waste PET plastic by a microwave one-step synthesis process with only 4 h. Comprehensive characterizations confirmed that the bimetallic Cu/Mn-PET catalyst outperformed monometallic counterparts and pure BDC-derived catalysts, featuring a more regular polyhedral morphology, good crystallinity and excellent stability. XPS valence state analysis uncovered pronounced synergistic interactions between Cu and Mn. Notably, despite a relatively low specific surface area (11.75 m 2 /g), Cu/Mn-PET featured the highest active site density and exhibited minimal interfacial charge transfer resistance in electrochemical measurements. When combined with PMS-AOPs technology, Cu/Mn-PET achieved nearly 100% degradation efficiency for various pollutants (dyes, antibiotics, phenolic compounds) under optimized conditions, accompanied by substantial mineralization (TOC removal rates above 56.36%). Additionally, the Cu/Mn-PET catalyst also showed strong recyclability with low metal leaching concentrations, as well as good salt tolerance. Furthermore, it was proved that the catalytic mechanism of Cu/Mn-PET involved the combined action of free radical reactions and non-free radical reactions, but the non-free radical based 1 O 2 played a dominant role. Thus, a green and efficient PET microwave one-step conversion technology has been developed to prepare a bimetallic organic composite catalyst with high catalytic activity and stability successfully, which hold significant implications for environmental protection and resource utilization.
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ACS Applied Nano Materials
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2026
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IF 5.5
Zhiyun Xu,Mengyuan Zhang,Wentao Zhang,Dandan Han,Yongsheng Zhang,Tianliang Lu,Renfeng Nie,Xiaoqin Si,Chunbao Xu,Dan Wu,Jianshe Wang
The regulation of metal-acid bifunctional sites is of great significance in heterogeneous catalysis. In this study, commercial Pt/Al2O3 catalysts were modified by ethyl iodide under reductive conditions to prepare I–Pt/Al2O3 catalysts with intimate metal-acid bifunctional sites for the selective hydrogenolysis of furfuryl alcohol to 1,2-pentanediol. Electron transfer from Pt nanoparticles to I results in the formation of a negatively charged I adatom on the positively charged Pt surface, which induces on-surface hydrogen spillover to form Pt(H–)–I(H+) metal-acid bifunctional sites under a hydrogen atmosphere. By modulating the I coverage, the ratio between metal and acid sites on the catalyst surface can be finely adjusted at the nanoscale, providing a tunable hydrogenolysis selectivity of th furan ring toward 1,2- or 1,5-pentanediol. The selectivity for 1,2-pentanediol was promoted from 17.2% over the initial Pt/Al2O3 catalyst to 67.0% over I–Pt/Al2O3 catalysts at full furfuryl alcohol conversion. The developed Pt–I catalyst with controllable metal-acid bifunctional sites holds great promise for the catalytic upgrading of biomass-derived molecules.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
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IF 21.1
Meng Li,Liyao Zeng,Peitong Cen,Ziyin Xia,Jiaqian Zhang,Lei Huang,Jia Yan,Shaoqi Zhou,Ce-Hui Mo,Xiangkang Zeng,Hongguo Zhang
This work introduces an innovative stacked iron mesh electrode configuration to achieve accelerated degradation of perfluorooctanoic acid (PFOA) by synergistically coupling electrochemical oxidation with peroxymonosulfate (PMS) activation. The system was systematically evaluated through electrochemical measurements, free radical quenching, and electron paramagnetic resonance spectroscopy, complemented by density functional theory calculations. The optimized triple-layer Fe electrode demonstrated outstanding performance, attaining nearly complete PFOA removal (100 %) within 12 min and a high kinetic rate constant of 0.218 min –1 . DFT analysis revealed that the Fe mesh possessed the strongest PMS adsorption energy (–2.68 eV) and the shortest Fe–O bond length (2.24 Å), confirming its superior activation capability. Mechanistic studies confirm the effectiveness of the electron transfer coupled with the hydroxyl radicals in defluorination and decarbonization during PFOA degradation. In addition, the system exhibited high cycle stability and strong tolerance to various background ion under continuous operations in the amplification experiment. The system also exhibited superior performance and low leaching of metal ions in treating various organic pollutants of practical wastewater (fluoride wastewater and landfill leachate). These findings present an effective and practical strategy for the remediation of persistent per- and polyfluoroalkyl substances in contaminated water sources.
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Processes
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2026
·Vol. 14
·期 2
·223
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IF 2.8
Tianran Kong,Annan Zhao,Yinghui Zhang,Zongxuan Bai,Hongying Lü,Kaixuan Yang
Efficient conversion of biomass-based platform molecules into high-value derivatives is recognized as one formidable challenge in biomass upgrading. In this work, a one-pot deep eutectic solvents-assisted solvothermal method was developed for the modification of the commercial Pt/C catalysts by introducing a secondary metal (M = Sn, Bi, Ge, Sb, Pb). The structural and electronic properties of the catalysts were precisely tuned. Among the screened metals, the addition of Sn yielded the most significant improvement in catalytic activity. The optimized PtSn0.5/C-140 catalyst achieved superior furfural (FAL) conversion and furfuryl alcohol (FOL) selectivity under mild conditions (20 °C, 2 MPa H2). Comprehensive characterizations, including XRD, HRTEM, XPS, and H2-TPD, confirmed the formation of Pt-Sn solid-solution phase. Furthermore, Characterization and reaction results revealed that the electronic and geometric effects induced by Sn modulated Pt active sites, significantly enhancing the adsorption of the active H species. Additionally, the SnOxspecies adjacent to the Pt-Sn sites served as hydrogen spillover acceptors, further accelerating the hydrogenation process. The synergy between the Pt-Sn solid-solution phase and SnOxspecies is identified as the origin of the superior performance at room temperature. These findings provide a new strategy for the design of high-performance biomass conversion catalysts by upgrading commercial noble metal catalysts.
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Nature Communications
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2026
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IF 15.7
Zhang Xinyi,Wang Liangjie,Wei Jian,Guo Zhuang,Liu Xinyao,Duan Lijie,Zhao Huazhang,Song Yonghui
Oxygen vacancies (O v ) on metal oxide surfaces exhibit high catalytic activity for activating peroxymonosulfate (PMS) in wastewater decontamination, yet their in-situ regeneration remains a significant challenge. This study successfully achieves in-situ real-time regeneration of O v on CuO surfaces through simple alkali etching without interrupting the contaminant removal process. The surface hydroxyl groups introduced by alkali treatment significantly reduce the formation energy of O v on CuO surfaces from 1.60 eV to 0.38 eV. Both experimental results and density functional theory calculations reveal that the high activity of CuO relies on the synergy of surface hydroxyl groups and O v . This synergy increases the antibonding states below the Fermi level and the electron spin density of Cu near O v , thereby promoting electron transfer from CuO to PMS. As a result, by just adding an equimolar amount of alkali relative to PMS in CuO/PMS system, the degradation rate constant of sulfamethoxazole (SMX) greatly increases by 42 times. The primary reactive oxygen species in this system are sulfate radicals and hydroxyl radicals. Furthermore, OH - /CuO/PMS system exhibits a long-term stability (> 300 h) for SMX removal in a real water matrix. This work provides a highly executable method to in-situ real-time regenerate O v on CuO surfaces, representing significant progress in the critical yet underappreciated field of catalyst regeneration.
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Journal of Water Process Engineering
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2026
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IF 6.7
Tianyuan Xu,Nanxi Zhu,Ruina Yuan,Yaowen Xing,Xiahui Gui
Carbon-driven persulfate (PS) activation is promising for antibiotic degradation, but conventional carbon catalysts often require thermal/acid-base modification or metal doping, suffering from low yields and high costs. Herein, we innovatively employed unmodified low-rank coals from Shengdong (LC SD ) and Sujiagou (LC SJG ) as cost-effective PS activators for sulfamethazine (SMZ) degradation. Characterizations including Raman, 13 C nuclear magnetic resonance, and electron paramagnetic resonance (EPR) revealed distinct structural-chemical features. LC SJG had more structural defects, –OH, and –COOH groups, while LC SD showed higher persistent free radical and C O group concentrations. LC SJG exhibited superior performance (99.3 % SMZ removal in 120 min) versus LC SD (84.2 %) and good tolerance to coexisting ions, indicating practical application potential. Possible degradation pathways of SMZ, as revealed by high-performance liquid chromatography-mass spectrometry, were proposed involving sulfonamide cleavage and pyrimidine ring opening. Mechanistic investigations via EPR, radical quenching, and electrochemical analysis revealed that 1 O 2 dominated SMZ degradation (59.3 %) in the LC SD /PS system via C O groups. Conversely, • OH and SO 4 •− contributed 62.7 % to degradation in the LC SJG /PS system through structural defects and –COOH groups. Overall, this study provides a novel strategy for developing low-cost, high-performance PS activators tailored for wastewater treatment.
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Desalination and Water Treatment
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2026
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IF 1
Yuqiong Gao,Qingqing Yang,Jiaxin Ma,Juxiang Chen,Cong Li,Naiyun Gao
This study employs the Fe(III)/CaSO 3 system to degrade ibuprofen (IBP) and elucidate the key factors and mechanisms. Negligible IBP degradation is observed when CaSO 3 and Fe(III) are applied individually, but their combination significantly enhances it. At initial pH 3, 40 μΜ Fe(III), and 200 μM sulfite, 92.2 % of IBP was removed within 20 min. Quenching experiments indicated that SO 4 •– , •OH, and 1 O 2 collectively governed the degradation of IBP in the Fe(III)/CaSO 3 system. Additionally, dissolved oxygen is essential in the system by initiating the radical chain reactions. The degradation of IBP by the Fe(III)/CaSO 3 system is influenced by key operational parameters and the water matrix. Typically, the process exhibits optimal Fe(III) and sulfite concentrations and initial pH, an activation energy of 51.2 kJ·mol -1 , and is inhibited by common water constituents like humic acid (HA), Cl⁻, Br⁻ and Mg 2+ . Integrated LC/TOF/MS and DFT calculations identified hydroxylation and decarboxylation as the primary pathways for IBP degradation, with bioassays confirming decreased antibacterial activity due to toxic products. Overall, our finding indicate that the Fe(III)/CaSO 3 system is effective for the oxidation of IBP, but the process parameters need further optimization to enhance IBP degradation efficiency and reduce potential environmental risks.
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Desalination and Water Treatment
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2026
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IF 3.4
Yantao Zhu,Jianping Sun,Ying Xie,Qiyu Liu,Fu Zhu,Yetong Chen,Zeyu Wang,Manni Li,Hassaan Ahmad Butt,Huizhong Chi
Cu 0 - activated peroxymonosulfate (PMS) is a promising advanced oxidation process for the removal of pharmaceuticals and personal care products, yet its performance is often limited by inefficient Cu(II)/Cu(I) redox cycling as well as the low steady-state availability of reactive copper species. Here, we constructed a Cu 0 /HA/NCP/PMS system by integrating hydroxylamine as a reductant and neocuproine as a Cu(I) - complexing ligand to intensify naproxen degradation and investigate the underlying activation pathway. Under typical conditions, the synergistic combination of HA and NCP caused NPX removal to enable 98.57% within 6 min. This is significantly higher than those in Cu 0 /PMS, Cu 0 /NCP/PMS, and Cu 0 /HA/PMS. The system maintained high efficiency across pH 3.0 ~ 7.0. Scavenging tests and nitrobenzene probing indicated that ⋅ O H / S O 4 ⋅ − pathways were not dominant, whereas benzoic acid caused only moderate inhibition, collectively supporting a non-radical pathway. Spectroscopic and LC-MS evidence revealed a ligand-stabilized high-valent copper oxidant, with characteristic absorption at 358 nm and a signal at m/z 479 assigned to [Cu(III) - (NCP) 2 ] 3+ . This work provides a mechanistically grounded “reduction and complexation” strategy to overcome Cu - based persulfate activation bottlenecks and achieve rapid, pH - resilient degradation of NPX.
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JOURNAL OF HAZARDOUS MATERIALS
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2026
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IF 10.6
Xinyi Tang,Yan Wang,Xiumei Chen,Wei Kong,Xue He,Yi Yang
Waterborne pathogenic microorganisms pose serious public health threats by causing gastrointestinal infections and disease outbreaks. However, conventional disinfection technologies suffer from limitations such as high equipment costs, the formation of chlorinated byproducts, and limited scalability. To address these challenges, we developed a heterogeneous oxidative system based on nitrogen-doped carbon materials (N-Cs) for peroxymonosulfate (PMS) activation and efficient microbial inactivation. Using Escherichia coli ( E. coli) as a model pathogen, we demonstrate that the N-Cs /PMS system achieves rapid and effective disinfection via a non-radical, synergistic mechanism. Singlet oxygen ( 1 O 2 ) is identified as the dominant reactive species, initiating a cascade of cellular damage including membrane dysfunction, genomic DNA degradation, and the induction of antioxidant enzymes (e.g., SOD, CAT). In addition, transcriptomic analysis reveals that 1 O 2 generated in the system perturb gene expression related to metabolic regulation and catalytic activity, thereby disrupting bacterial physiology at a systemic level. This work highlights the critical role of 1 O 2 in non-radical disinfection and provides mechanistic insights into PMS-based advanced oxidation processes for microbial control in water treatment applications.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.6
Cuirong Yan,Xiunan Cai,Zhongqiu Luo,Qingxia Ouyang,Xintao Zhou
Heterogeneous Fenton-like catalytic oxidation is a promising technology for eliminating refractory organic pollutants, yet precise regulation of its intrinsic pathways (radical or non-radical) remains challenging. In this study, copper smelting slag was employed as a sustainable precursor to synthesize a nitrogen/manganese co-doped iron-based transition metal silicate (N/Mn-Fe-TMSs) catalyst for peroxymonosulfate (PMS) activation. The study demonstrates that Mn doping at Fe sites induces local lattice distortion and charge enrichment in the two-dimensional nanosheet architecture, and increases the d-band electron density of Fe sites, thereby enhancing PMS adsorption. The adsorbed PMS undergoes peroxy bond polarization and cleavage at these electron-enriched sites, with subsequent electron transfer to the metal centers, efficiently promoting singlet oxygen ( 1 O 2 ) generation. Additionally, nitrogen introduction transforms Me–O into unsaturated Me–N coordination, optimizing the d-band center of Fe sites. This modification significantly lowers the activation energy for PMS deprotonation and facilitates the formation of high-valent metal-oxo species. Consequently, the degradation pathway shifts from being predominantly radical-driven (74.5%) to a non-radical-dominated process (64.2%). Owing to these synergistic effects, the N/Mn-Fe-TMSs/PMS system achieves 99.3% removal of butyl xanthate within 15 min, exhibiting a degradation rate 56.4 times faster than that of the undoped system. Furthermore, the system exhibited remarkable resistance to interference from co-existing ions, exceptional structural stability, and excellent reusability. This study presents a sustainable and cost-effective approach for valorizing copper slag while advancing the design of non-radical-driven PMS activation systems for efficient and durable wastewater treatment.
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npj Science of Food
·
2026
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IF 9.7
Hu Boyong,Zheng Haochen,Shen Yanfei,Wang Hao,Liu Zhihua,Lv Haoming,Han Lijun,Ma Yinuo,Wang Heng,Xiao Zuobing
The flavor complexity of red wine stems from diverse aroma compounds and their interactions. Key odorants 2,3,5-trimethylpyrazine (TMP) and furfuryl alcohol (FA) contribute roasted/earthy and sweet/caramel-like notes, respectively, collectively shaping the wine’s sensory profile. However, the mechanism underlying their olfactory interaction remains unclear. In this study, human sensory evaluation revealed a mutual synergistic enhancement between TMP and FA. Cellular models expressing cognate receptors OR5K1 (TMP-specific) and OR2W1 (FA-responsive) were established, with intracellular cAMP detection confirming receptor-level synergy. Further molecular simulations predicted non-competitive binding mechanisms, as both odorants occupied distinct sites within their respective receptor pockets, consistent with observed non-antagonistic synergy. This work elucidates the molecular perceptual mechanism underlying key wine aroma interactions, providing a novel theoretical framework for understanding red wine flavor complexity.
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CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Yingyi Li,Wei Li,Shangru Zhai,Zuoyi Xiao,Jingai Hao,Qingda An,Xin Zhao,Shuang Shan,Xianquan Li
Cotton-derived Co-CN-X catalysts via dopamine-assisted polymerization–pyrolysis. • Co-CN-24 exhibits superior catalytic activity and robust stability in PMS activation. • Nitrogen doping catalysts coupled PMS system governs non-radical pathways toward electron-rich pollutants degradation. Biomass-derived materials offer renewability and waste valorization for water purification, yet identifying and controlling their precise ROS-driven degradation pathway in peroxymonosulfate (PMS)-based systems remains a fundamental challenge. Herein, we report N-doped cobalt‑carbon catalysts (Co-CN-X) from cotton via polymerization-pyrolysis and show how nitrogen doping tailors PMS activation for pollutant degradation. Upon nitrogen introduction, the optimized Co-CN-24 catalyst achieves efficient carbamazepine degradation, reaching 96.55% within 35 min with a 7.12-fold enhancement in reaction efficiency compared to the Co-C counterpart. Integrated characterization and DFT calculations reveal that Co-CN-24 possessing high pyrrolic N and Co 0 content abundant facilitates 1 O 2 generation, thereby increasing the dominance of non-radical pathways in pollutant degradation. Most importantly, the Co-CN-24/PMS system exhibits selective reactivity toward electron-rich pollutants, broad pH tolerance, and robust performance in complex water matrices, including continuous flow experiments. This work provides mechanistic insight into how nitrogen doping regulates non-radical pathways in biomass-derived catalysts, offering a sustainable strategy for targeted pollutant remediation.
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