Separation and Purification Technology最新文献

{"title":"Unlocking the full adsorption potential of microporous carbon for formaldehyde in complex air mixtures","authors":"Yang Sun ,&nbsp;Mingshen Yu ,&nbsp;Sherif A. Younis ,&nbsp;Kowsalya Vellingiri ,&nbsp;Jan Szulejko ,&nbsp;Ki-Hyun Kim","doi":"10.1016/j.seppur.2025.134476","DOIUrl":"10.1016/j.seppur.2025.134476","url":null,"abstract":"<div><div>The widespread application of microporous activated carbon (AC) in air purification systems is challenged by its questionable efficacy against low-boiling, polar compounds, such as formaldehyde (FA), particularly when present in complex, multi-component streams (e.g., aromatic hydrocarbons [BTX], oxygenated [ethanol], and water vapors). Aiming to enhance its practical utility, this study undertakes a systematic investigation into the FA adsorption behavior of a commercial AC bed adsorbent with precise control over the packing particle sizes (i.e., small [AC-S: 0.075–0.212 mm], medium [AC-M: 0.212–0.6 mm], and large [AC-L: 0.6–1.7 mm]). Emphasis is also placed on the effects of relative humidity [0.015 % to 100 %], inlet FA concentrations [50–500 ppm]), and gas phase composition (non-competing single and competing multi-component streams) on the breakthrough (BT) adsorption dynamics of FA onto AC bed adsorbents. The 99 % BT adsorption capacity (mg g⁻¹) for 100 ppm FA under trace humidity conditions (5 ppm H₂O) is moderately influenced by AC particle size (AC-M (12.0) &gt; AC-S (9.8) &gt; AC-L (5.8)). BTX severely reduces FA uptake (by 77.5–96.0 %) and induces a roll-up effect. However, humidity and ethanol synergistically enhance FA adsorption by increasing the number of polar surface groups, which in turn suppresses the competition from BTX. The dominance of physisorption for FA is suggested by its adherence to the Freundlich isotherm. Kinetics transitions (e.g., from pseudo-first-order for smaller AC particles to pseudo-second-order for larger ones) is indicative of their differing diffusion mechanisms. Spectroscopic studies reveal that water and ethanol play a dual role: they aid adsorption via hydrogen bonding and paraformaldehyde formation at moderate levels, while blocking sites at saturation. This research offers crucial insights into tuning AC properties, paving the new way for the design of application-ready adsorbents for complex environments.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"377 ","pages":"Article 134476"},"PeriodicalIF":8.1,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144701850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Versatile ·OH! its roles on NDMA accumulation during ozonation of amines: A review","authors":"Fan Zhou, Jingyi Li, Xiaobin Liao, Chenyang Liao, Menglan Gao, Huatong Ma, Jin Wang","doi":"10.1016/j.seppur.2025.134497","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.134497","url":null,"abstract":"Amines with dimethylamine (DMA) groups were reported to form N-nitrosodimethylamine (NDMA) directly during ozonation. The conventional view is that NDMA formation (Y_F) is mainly attributed to ozone (O₃), whereas hydroxyl radicals (·OH) dominates NDMA degradation (Y_D) and does not contribute to its formation. In fact, the ·OH with strong oxidation ability can influence NDMA formation by transforming precursors into intermediates with distinct NDMA molar yields compared to those of parent compounds (Y_{F-intermediates} ≠ Y_F-parent). In other words, whether ·OH promotes or inhibits NDMA accumulation (Y = Y_F <strong>−</strong> Y_D) depends on the relationship between its formation changes (ΔY_F = Y_{F-intermediates} − Y_F-parent) and degradation (Y_D) caused by ·OH. In addition, ·OH can intervene in the formation of precursor (unsymmetrical dimethylhydrazine (UDMH)) or nitrosating agents (nitrous anhydride (N₂O₃) &amp; dinitrogen tetroxide (N₂O₄)) when ammonia (NH₃) or nitrite (NO₂<strong>⁻</strong>) are present in the system. The final NDMA accumulation would be determined by the amounts of O₃, ·OH as well as the O₃/·OH ratio, which are significantly affected by the ozone dosing amounts, the pH of the solution and co-existed components in the actual water matrix during ozonation. This review would provide an overall view of the role of O₃ and ·OH on NDMA accumulation during ozonation, providing important insights for optimizing the ozonation processes and reducing the risk of NDMA in drinking water.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"1 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144710942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dual engineering of oxygen vacancies and cation substitution: Insights into electronic density redistribution for ultrahigh peroxymonosulfate activation","authors":"Zepeng Zhang ,&nbsp;Yixin Ouyang ,&nbsp;Jiawei Zhou ,&nbsp;Zifan Liu ,&nbsp;Min Hu ,&nbsp;Qifeng Zhang ,&nbsp;Xiuwen Li ,&nbsp;Lan Zhang ,&nbsp;Xiaoshuai Hang ,&nbsp;Zijian Li","doi":"10.1016/j.seppur.2025.134509","DOIUrl":"10.1016/j.seppur.2025.134509","url":null,"abstract":"<div><div>The urgent need for efficient catalytic oxidation of persistent organic pollutants in water has spurred significant research efforts. This study introduces a novel approach using transition metal oxides (TMOs) synthesized via a facile cyanogel-NaBH₄ method. By fine-tuning the electronic configuration of active center, we developed ultrathin TMOs with unique electronic states that exhibit exceptional activation of peroxymonosulfate (PMS). Our synthesized TMOs demonstrated a remarkable 3.50–11.86 times higher peroxy-bond activation efficiency than reference metal oxides (bulk Co₃O₄) for sulfamethazine degradation. Among these, Fe-Co-OV, incorporating oxygen vacancies and low-valent metal substitution, exhibited the highest intrinsic activity (0.0209 g m⁻² min⁻¹) and ultra-high PMS utilization efficiency (0.3302). Instrument testing confirmed the pivotal roles of •OH and SO₄•⁻ radicals in Fe-Co-OV/PMS system. Theoretical calculations further elucidated how O-vacancies and low-valent cation substitution could redistribute the density of states of the active center, upshift the O p-band center, and create an electron-rich center. This favorable electronic structure promoted PMS adsorption and activation, overcoming the unfavorable redox couple. Live-dead cell staining experiments revealed a 52.63 % increase in cell survival rates in water samples treated with Fe-Co-OV/PMS system, indicating reduced eco-toxicity and improved water quality. Overall, this study established a clear atomic-level correlation between the electronic density of the active center, oxygen vacancies, and cation substitution, providing valuable insights for the rational design of advanced oxidation process catalysts.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"378 ","pages":"Article 134509"},"PeriodicalIF":9.0,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144702039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"TiO2-Bi2Sn2O7 loaded wood for on-demand oil–water separation while efficiently degrading AO7","authors":"Hang Xu ,&nbsp;Feng Li ,&nbsp;Taohai Li","doi":"10.1016/j.seppur.2025.134478","DOIUrl":"10.1016/j.seppur.2025.134478","url":null,"abstract":"<div><div>The escalating environmental crisis caused by persistent discharge of organic-laden oily wastewater demands revolutionary solutions integrating dual functionality for simultaneous oil–water separation and pollutant degradation. Conventional separation membranes exhibit fundamental limitations in addressing these intertwined challenges. We pioneer a groundbreaking biomass-derived sonocatalytic/phptocatalytic platform by strategically engineering natural wood. Through hydrothermal synthesis and precise TiO₂ modification of Bi₂Sn₂O₇ nanoparticles, we constructed TiO₂-Bi₂Sn₂O₇, which were seamlessly integrated into the wood matrix via spray deposition technology. Capitalizing on wood’s unique anisotropic porosity and eco-friendly characteristics, our bio-inspired design achieves unprecedented performance that robust hydrophobicity, exceptional oil–water separation efficiency (97% retention after 15 rigorous cycles), and remarkable environmental resilience maintaining functionality under extreme conditions.</div><div>Most strikingly, we developed a stimuli-responsive system where acrylic acid functionalization enables dynamic, reversible toggling between hydrophobic/lipophilic and hydrophilic/oleophobic states − a critical advancement for adaptive wastewater treatment. The engineered smart wood possessed superior underwater oleophobic (146.3 ± 2.74° removal angle), and synergistic sonocatalytic degradation (95 % AO7 dye elimination in 60 min under ultrasonication). This work establishes a new paradigm for sustainable water purification technologies, showcasing wood’s transformative potential as a multifunctional platform. Our TiO₂-Bi₂Sn₂O₇ wood composite represents a quantum leap in wastewater treatment, offering intelligent on-demand separation, simultaneous pollutant mineralization, and scalable green manufacturing-addressing critical gaps in current environmental remediation strategies.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"377 ","pages":"Article 134478"},"PeriodicalIF":8.1,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144701854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inherent safety evaluation and optimization for the separating tetrahydrofuran/methanol/water ternary system","authors":"Zhehao Jin, Huimin Liu, Zhongde Dai, Mengdie Gao, Yiyang Dai","doi":"10.1016/j.seppur.2025.134503","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.134503","url":null,"abstract":"The increasing scale of the chemical industry has attached growing importance to process safety. The distillation process is recognized as an energy-intensive process, therefore, the implementation of process intensification and optimization for energy-saving design necessitates an assessment of the inherent safety. In this work, we developed a comprehensive methodology including thermodynamic analysis, process intensification, optimization, and inherent safety evaluation for the tetrahydrofuran (THF)/methanol (MeOH)/water mixture separation. Firstly, the thermodynamic insights are employed to guide the distillation sequence design. Then, triple-column extractive distillation (TED), double-column reactive extractive distillation (DCRED), and reactive extractive dividing wall column (REDWC) are conceptually designed for the recovery of THF and MeOH from the mixture. A simultaneous optimization strategy based on the non-dominated sorting algorithm (NSGA-II) by taking total annual cost (TAC) and CO₂ emissions as objective functions to optimize the process parameters. The inherent process risk index (IPRI) is adopted to evaluate the processes’ safety. Results show that the TAC of the TED, DCRED, and REDWC processes are 1.78 × 10⁶ $/y, 1.25 × 10⁶ $/y, and 1.41 × 10⁶ $/y and the CO₂ emissions of the three are 1,449 kg/h, 1,130 kg/h, and 1,292 kg/h respectively. DCRED process is superior to the other two processes in term of economic and environmental benefits. The results of IPRI indicate that the REDWC process exhibits superior performance compared to the other two processes. This work provides a systematic method combining optimization and inherent safety evaluation for multi-azeotrope mixture separation.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"11 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144710927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Template-free synthesis of intergrown T zeolite with high CH4/N2 selectivity","authors":"Yuan Li ,&nbsp;Yang Zhou ,&nbsp;Yuze Zhang ,&nbsp;Xiaoqing Wang ,&nbsp;Jinping Li ,&nbsp;Jiangfeng Yang","doi":"10.1016/j.seppur.2025.134500","DOIUrl":"10.1016/j.seppur.2025.134500","url":null,"abstract":"<div><div>Although zeolite adsorbents are widely used for gas separation, current studies predominantly focus on single-phase topological structure. Herein, an intergrowth T zeolite with ERI and OFF topologies was synthesized in a template-free system, and the results showed the CH₄ adsorption capacity and CH₄/N₂ selectivity were 34.4 cm³/g and 5.3 (298 K, 1 bar), respectively. The exceptional performance was attributed to its high microporosity and the 6-member ring (6-MR) structure at the intergrowth interface, which synergistically optimize the distribution of adsorption sites, as evidenced by density functional theory (DFT) calculations. Breakthrough experiments demonstrated that intergrowth T zeolite can effectively separate CH₄/N₂ mixtures (50/50 and 20/80; v/v) with actual separation times of 7.0 min and 10.4 min. Furthermore, two-bed six-step pressure swing adsorption (PSA) simulations further indicated that 20 % of the pristine CH₄ could be enriched to over 50 %, with a recovery rate of 87 %, demonstrating significant potential for upgrading low-concentration coal-bed methane.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"377 ","pages":"Article 134500"},"PeriodicalIF":8.1,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144710930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design and synthesis of defect-engineered POM@MOF catalysts for aerobic oxidative desulfurization","authors":"Xiaojia Li,&nbsp;Yiyang Bai,&nbsp;Jingfang Li,&nbsp;Wenjia Qu,&nbsp;Liye Liang,&nbsp;Guangming Li","doi":"10.1016/j.seppur.2025.134507","DOIUrl":"10.1016/j.seppur.2025.134507","url":null,"abstract":"<div><div>In this study, PW₅V₇@<em>rht</em>-MOF-1 (<strong>1</strong>) was prepared via one-pot hydrothermal synthesis and its crystal structure was confirmed by X-ray diffraction analysis. To enhance catalytic performance, a series of defect-engineered PW₅V₇@<em>rht</em>-MOF-1 (<strong>1-D_x</strong>) catalysts were further developed by using formic acid (FA) as a modulator. TG, PXRD, and BET analyses demonstrated that defects resulting from ligand deficiency in <strong>1-D_x</strong> enhanced their specific surface area and porosity, while maintaining the overall structural integrity. XPS, EPR and Py-IR analyses revealed the presence of additional oxygen vacancies and Lewis acid sites in <strong>1-D_0.2</strong>. Experimental results show that, with the assistance of the surfactant, the optimized catalyst (<strong>1-D_0.2</strong>) achieves 99.8% sulfur removal within 3 h at 100 °C, significantly improving upon the defect-free catalyst (71.1%). Cycle tests indicate that <strong>1-D_0.2</strong> maintains 93.4% desulfurization efficiency after seven consecutive uses, demonstrating its structural stability. In addition, the radical oxidation mechanism of the AODS reaction was further validated by radical scavenging experiments and EPR. This study presents a novel strategy for designing defect-engineered POM@MOF catalysts and demonstrates their application in deep fuel desulfurization, highlighting the crucial role of defect engineering in heterogeneous catalysis.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"378 ","pages":"Article 134507"},"PeriodicalIF":9.0,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144710946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A lotus-inspired, 3D-assembled solar-powered evaporator with an excellent tri-function of desalination, wastewater purification, and electricity generation","authors":"Yanan Mao ,&nbsp;Siyuan Yin ,&nbsp;Jiyuan Zhu ,&nbsp;Lingming Kong ,&nbsp;Bo Song","doi":"10.1016/j.seppur.2025.134504","DOIUrl":"10.1016/j.seppur.2025.134504","url":null,"abstract":"<div><div>A lotus-inspired 3D-assembled solar evaporator with heterojunction of EDLs has been developed to achieve highly efficient freshwater and electricity generation through green and sustainable solar-driven interface evaporation technology. The 3D evaporation structure greatly increases the evaporation interface and improves environmental energy harvesting. Adopting the hydrophilic complex coating of PDA/TEOS and PPy to improve the upward water supply of the evaporation system. Both the 3D structure and the hydrophilic complex coating contribute to the improved light-harvesting capability. Suffering from the above advantages, the optimized LME evaporator achieves an evaporation rate of 2.91 kg m²h^-1 under 1 sun irradiation. By constructing different electron double layer (EDL) at the top and bottom of the 3D evaporator to form a heterojunction-inspired EDLs effect to further enhance the power generation capacity. In addition, the LME solar evaporator has superior environmental adaptability, long-term operational stability, desalination-purification performance, and economic feasibility. Overall, the work will provide new inspiration for researchers on the structure design and function optimization of the 3D high-performance solar evaporator to effectively address the freshwater shortage, energy crisis, and environmental pollution, etc.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"377 ","pages":"Article 134504"},"PeriodicalIF":8.1,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144701848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of high-silica Sigma-1 zeolite membranes on hollow fibers for gas separation","authors":"Qi Xue, Peng Du, Jiahuan Du, Yuting Zhang, Xuehong Gu","doi":"10.1016/j.seppur.2025.134498","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.134498","url":null,"abstract":"DDR-type zeolite, owning small eight-membered-ring (8MR) pores, is a good membrane material for CO₂/CH₄ and H₂/CH₄ separation. All-silica DDR (DD3R) zeolite membranes have been studied for many years but it is difficult to avoid the growth of impurity crystals and hazardous ethylenediamine is used as a mineralizer. Al-containing Sigma-1 zeolite which is isostructural with DD3R, is synthesized using sodium hydroxide as the mineralizer. In this study, high-silica Sigma-1 zeolite membranes (Si/Al = ∼60) were synthesized for the first time and employed in H₂/CH₄ and CO₂/CH₄ separation. Effects of template concentration and H₂O/SiO₂ ratio in precursor solution on membrane quality were investigated extensively. When the precursor solution has molar composition of 9 ADA: 60 SiO₂: 1 NaAlO₂: 3 NaOH: 6000 H₂O, a high-quality Sigma-1 zeolite membrane (3.6 μm thick) was acquired. The membrane exhibited the highest H₂/CH₄ and CO₂/CH₄ separation selectivities (117 and 304), and the corresponding H₂ and CO₂ permeances were 1.60 × 10⁻⁸ mol m⁻² s⁻¹ Pa⁻¹ and 3.51 × 10⁻⁸ mol m⁻² s⁻¹ Pa⁻¹, respectively. Additionally, the membrane showed good separation stability under both dry and humid conditions.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"54 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144701942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ultrafast degradation of refractory organic pollutants via PMS activation over Co3CuAl-LDH with coordinatively unsaturated Co-Cu dual active sites: Enhanced electron transfer mechanism","authors":"Lan Wang,&nbsp;Zhiqiang Zhu,&nbsp;Yiqian Wu,&nbsp;Cong Wang,&nbsp;Junjie Liu,&nbsp;Chuanyi Wang","doi":"10.1016/j.seppur.2025.134514","DOIUrl":"10.1016/j.seppur.2025.134514","url":null,"abstract":"<div><div>Peroxymonosulfate (PMS)-based advanced oxidation process is a promising technology for water treatment. However, there is still a great challenge on enhancing the PMS activation for the<!--> <!-->rapid<!--> <!-->removal<!--> <!-->of recalcitrant organic pollutants in complex waters. Herein, we developed an ultra-thin ternary CoCuAl-layered double hydroxide (LDH) catalyst with abundant oxygen vacancy (O_v), enabling the exposure of coordinatively unsaturated Co-Cu dual-metal active sites, which mediates “two birds with one stone” strategy to realize simultaneous PMS oxidation and reduction for ROS generation, achieving ultrafast elimination of refractory organic pollutants. Theoretical and experimental results reveal that the synergistic effect of Co-Cu paired sites accelerates redox cycles of Co²⁺/Co³⁺ and Cu⁺/Cu²⁺, strengthening PMS activation. Notably, the presence of O_v fine-tunes the electronic structure of adjacent Co/Cu sites, which enhances electron transfer between these unsaturated metal sites and PMS, enabling self-regeneration of metal sites, thereby synergistically promoting the productions of radicals (SO₄•⁻) and nonradicals (¹O₂). Consequently, the catalyst exhibits remarkable catalytic activity (13.27 min⁻¹) using sulfamethoxazole (SMX) as the probe, significantly surpassing those of state-of-the-art heterogeneous catalysts by approximately 15–393 times. The removal efficiency of SMX is still reached 100 % after 10 h of continuous operation in a scale-up experiment using a self-designed Fenton-like filter, and 84 % of<!--> <!-->chemical<!--> <!-->oxygen<!--> <!-->demand from real coal chemical wastewater (235 mg·L⁻¹) is removed under the same operating conditions, marking the alluring potential in advanced treatment of actual wastewater. This work provides valuable insights into electron transfer-enhanced PMS activation by LDH and elaborates its prospects in water treatment applications.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"377 ","pages":"Article 134514"},"PeriodicalIF":8.1,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144710929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}