Separation and Purification Technology最新文献_第2页

A novel pyrazolyl-pyridine N-donor ligand-based extraction system for the separation of trivalent actinides from lanthanides without lipophilic anions 一种新型的吡唑吡啶n给体萃取体系用于分离三价锕系元素和不含亲脂阴离子的镧系元素

IF 9 1区工程技术

Separation and Purification Technology Pub Date : 2026-06-19 Epub Date: 2026-02-03 DOI: 10.1016/j.seppur.2026.137147

Rui Li, Hang Zhou, Yiting Wang, Qiao Yu, Die Huang, Qiaoyin Huang, Songdong Ding

{"title":"A novel pyrazolyl-pyridine N-donor ligand-based extraction system for the separation of trivalent actinides from lanthanides without lipophilic anions","authors":"Rui Li, Hang Zhou, Yiting Wang, Qiao Yu, Die Huang, Qiaoyin Huang, Songdong Ding","doi":"10.1016/j.seppur.2026.137147","DOIUrl":"10.1016/j.seppur.2026.137147","url":null,"abstract":"<div><div>To address the challenges of poor lipophilicity and the reliance on synergistic extractants in pyrazolyl-pyridine N-donor ligands for separating trivalent actinides from lanthanides, four 2,6-bis(5-alkyl-1H-pyrazol-3-yl)pyridine (BPP) ligands with varying alkyl chains were designed and synthesized. An efficient extraction system was established using n-octanol/n-dodecane (50 vol%) as the diluent, requiring no synergistic extractant. Among the ligands, C8-BPP exhibits a higher extraction selectivity for Am3+ over trivalent lanthanide ions (Ln3+), with separation factors (SFAm/Ln) ranging from 48 to 172. Slope analysis, UV–vis titration, and isothermal titration calorimetry (ITC) consistently confirmed a 2:1 ligand-to-metal complexation stoichiometry with Eu3+. Fourier transform infrared (FT-IR) and X-ray photoelectron spectroscopy (XPS) analyses verified the tridentate coordination mode of C8-BPP. Further studies using Raman spectroscopy and conductivity measurements revealed the bidentate coordination of NO3− ions and their coordination number in the inner sphere, while time-resolved laser fluorescence spectroscopy (TRLFS) confirmed a dehydrated inner coordination environment for Eu3+. Based on combined extraction and complexation results, a neutral complexation-based extraction model was proposed. The corresponding stability constants and thermodynamic parameters (ΔH, ΔS, ΔG) were also determined.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"392 ","pages":"Article 137147"},"PeriodicalIF":9.0,"publicationDate":"2026-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146110898","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}

引用次数: 0

Enhancing hydrogen sulfide removal through photoelectrochemistry with WO3 photoanodes under blue LED irradiation 蓝光LED照射下WO3光阳极光电化脱除硫化氢

IF 9 1区工程技术

Separation and Purification Technology Pub Date : 2026-06-19 Epub Date: 2026-02-03 DOI: 10.1016/j.seppur.2026.137138

Roberta Y.N. Reis , Alberto Rodríguez-Gómez , Caio V.S. Almeida , Lucia H. Mascaro , Manuel A. Rodrigo

{"title":"Enhancing hydrogen sulfide removal through photoelectrochemistry with WO3 photoanodes under blue LED irradiation","authors":"Roberta Y.N. Reis , Alberto Rodríguez-Gómez , Caio V.S. Almeida , Lucia H. Mascaro , Manuel A. Rodrigo","doi":"10.1016/j.seppur.2026.137138","DOIUrl":"10.1016/j.seppur.2026.137138","url":null,"abstract":"<div><div>Hydrogen sulfide (H2S) is a highly toxic and corrosive gas commonly found in industrial emissions, posing serious environmental and operational risks. This work proposes an innovative photoelectrocatalytic strategy for the simultaneous degradation of gaseous H2S and the generation of green hydrogen (H2) under flux conditions. The system integrates gas-liquid absorption with electrochemical and photoelectrochemical oxidation, employing a WO3 photoanode and a stainless steel cathode separated by a proton exchange membrane. The performance of the electrocatalytic and photoelectrocatalytic configurations was systematically evaluated regarding H2S removal efficiency, hydrogen production, and energy consumption. The photoelectrocatalytic process exhibited superior activity, achieving a degradation of 8.2 mg S with a Coulombic efficiency of 3600 mg S Ah−1 for H2S oxidation and a Faradaic efficiency of 60% for H2 evolution at an applied current density of 0.33 mA cm−2. Illumination with a 10 W high-power blue LED significantly increased charge separation and reduced the cell potential, resulting in higher energy efficiency. Post-reaction characterization by X-ray photoelectron spectroscopy (XPS) demonstrated partial sulfur deposition on the WO3 surface and the presence of oxidized sulfur species. Overall, the results demonstrate that photoelectrocatalysis under optimized conditions offers an efficient and sustainable route for simultaneous H2S reduction and hydrogen generation, providing a promising dual-purpose platform for environmental remediation and renewable energy production.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"392 ","pages":"Article 137138"},"PeriodicalIF":9.0,"publicationDate":"2026-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146101344","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}

引用次数: 0

Innovative RO-only approach for efficient urea management in ultrapure water production from municipal wastewater reuse 创新的RO-only方法在城市废水回用的超纯水生产中高效尿素管理

IF 9 1区工程技术

Separation and Purification Technology Pub Date : 2026-06-19 Epub Date: 2026-02-07 DOI: 10.1016/j.seppur.2026.137167

Chulmin Lee , Iiyama masamitsu

{"title":"Innovative RO-only approach for efficient urea management in ultrapure water production from municipal wastewater reuse","authors":"Chulmin Lee , Iiyama masamitsu","doi":"10.1016/j.seppur.2026.137167","DOIUrl":"10.1016/j.seppur.2026.137167","url":null,"abstract":"<div><div>Urea is a recalcitrant, electrically neutral low-molecular-weight TOC component in municipal reclaimed water and a critical barrier for semiconductor ultrapure water (UPW) systems targeting sub-ppb TOC. This study evaluates a membrane-first, RO-only strategy as a chemical-free, “drop-in” upgrade to existing two-pass RO trains, avoiding dedicated urea-removal units (e.g., BAC, AOP, oxidation). Four commercial elements (TBW-HR, TMG(D), TM800M, and NRSP-UBT) were benchmarked at bench-scale using 4-in. modules under an equal-flux basis. Neutral-solute transport was parameterized by an apparent urea permeability, Burea  reproduced configuration-dependent pilot trends while acknowledging expected scale effects in 8-in. multi-element vessels. The results define a robust operating envelope for RO-only urea control under high-quality reclaimed feeds (8–10 ppb baseline) and typical excursions (20–50 ppb), enabling reduced chemical use, footprint, and cost in next-generation UPW infrastructure.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"392 ","pages":"Article 137167"},"PeriodicalIF":9.0,"publicationDate":"2026-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146135560","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}

引用次数: 0

Simultaneous removal of Cd (II) and benzo(a)pyrene complex pollution in a Fe1-xS@kaolinite/peroxymonosulfate system Fe1-xS@kaolinite/过氧单硫酸盐体系中同时去除Cd （II）和苯并(a)芘络合物污染

IF 9 1区工程技术

Separation and Purification Technology Pub Date : 2026-06-19 Epub Date: 2026-02-05 DOI: 10.1016/j.seppur.2026.137100

Xinlin Wang , Chunquan Li , Jinpan Li , Wanshu Chen , Wanjie Wang , Meng Yuan , Kai Wang , Fang Yuan , Hongqi Sun , Zhiming Sun

{"title":"Simultaneous removal of Cd (II) and benzo(a)pyrene complex pollution in a Fe1-xS@kaolinite/peroxymonosulfate system","authors":"Xinlin Wang , Chunquan Li , Jinpan Li , Wanshu Chen , Wanjie Wang , Meng Yuan , Kai Wang , Fang Yuan , Hongqi Sun , Zhiming Sun","doi":"10.1016/j.seppur.2026.137100","DOIUrl":"10.1016/j.seppur.2026.137100","url":null,"abstract":"<div><div>The coexistence of heavy metals and organic contaminants in wastewater poses severe risks to public health and environmental sustainability. Iron sulfide (FeS) has attracted widespread attention for its potential in addressing such complex pollution, but suffers from the tendency to agglomerate and instability, which may lead to unsatisfactory remediation efficiencies. Herein, a novel Fe1-xS/kaolinite composite (Fe1-xS@K), derived from the transformation of FeS/kaolinite (FeS@K) material in an acidic condition, demonstrates efficient simultaneous removal of Cd(II) and benzo(a)pyrene (B[a]P) by ensuring excellent dispersion and stability. Notably, the 0.6-Fe1-xS@K/peroxymonosulfate (PMS) system removed 96.9% of Cd2+ and 98.9% of B[a]P within 20 min, respectively. Mechanism analysis revealed that kaolinite modulates the particle size of Fe1-xS to effectively minimize the agglomeration, thereby facilitating the activation of PMS and enhancing both thermal and chemical stability. This significantly boosts the generation of reactive oxygen species (ROS), e.g., SO4⋅−, ⋅OH, 1O2, and ⋅O2− in the degradation system, thus exhibits an exceptional potential for natural water and wastewater treatment due to its broad resistance to environmental interference. This work exemplifies a highly efficient sulfate radical-based advanced oxidation process for the removal of complex contaminants in water treatment.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"392 ","pages":"Article 137100"},"PeriodicalIF":9.0,"publicationDate":"2026-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146115825","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}

引用次数: 0

Faceted Bi2O2CO3 with Au@Mn3O4-induced dipole resonance for efficient photocatalytic NO/clothianidin oxidation 面Bi2O2CO3与Au@Mn3O4-induced偶极共振有效光催化NO/噻虫胺氧化

IF 9 1区工程技术

Separation and Purification Technology Pub Date : 2026-06-19 Epub Date: 2026-02-06 DOI: 10.1016/j.seppur.2026.137173

Xiaoming Xu , Jiaying Huang , Xianhui Zhu , Bing Liu , Ziyi Huang , Yijin Jia , Yike Zhang , Cheng Sun

{"title":"Faceted Bi2O2CO3 with Au@Mn3O4-induced dipole resonance for efficient photocatalytic NO/clothianidin oxidation","authors":"Xiaoming Xu , Jiaying Huang , Xianhui Zhu , Bing Liu , Ziyi Huang , Yijin Jia , Yike Zhang , Cheng Sun","doi":"10.1016/j.seppur.2026.137173","DOIUrl":"10.1016/j.seppur.2026.137173","url":null,"abstract":"<div><div>Efficient photocatalytic air and water remediation was limited by the trade-off between redox potential and spectral response. Herein, an Au/faceted Bi2O2CO3@Mn3O4 core@shell heterostructure was engineered for enhanced NO oxidation and clothianidin (CLO) degradation. Specifically, the interleaved slit architecture of Bi2O2CO3 with exposed {001} facets enhanced light scattering and surface energy, promoting visible light absorption and oxidation reactions. Notably, plasmonic Au nanoparticles synergized with Mn3O4 to induce dipole resonance due to symmetry of the electric field vector, amplifying the local electric field and broadening the spectral response. Meanwhile, Au mediated charge redistribution between Mn3O4 and faceted Bi2O2CO3, generating a giant internal electric field (IEF) that accelerated charge separation. Consequently, the heterostructure achieved 73.2% NO removal with 93.5% NO3− selectivity and minimal NO2 formation (28.6 ppb), as well as 95.6% CLO degradation under visible light, ultimately converting into non-toxic products, which exceeded reported benchmarks. The enhanced activity originated from Mn3O4/Au-induced dipole resonance–assisted Z-scheme charge transfer combined with IEF-driven carrier separation and prolonged lifetimes. The catalyst also exhibited excellent cycling stability, highlighting its promise for air and water purification.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"392 ","pages":"Article 137173"},"PeriodicalIF":9.0,"publicationDate":"2026-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146135585","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}

引用次数: 0

Enabling ultra-low-temperature NH3-SCR with superior H2O/SO2 resistance by a sandwich-structured ERI@CoFe-MnOx@Cor monolithic catalyst 通过三明治结构ERI@CoFe-MnOx@Cor单片催化剂实现超低温NH3-SCR具有优异的耐H2O/SO2性能

IF 9 1区工程技术

Separation and Purification Technology Pub Date : 2026-06-19 Epub Date: 2026-02-06 DOI: 10.1016/j.seppur.2026.137174

Yuhan Li , Juntao Wang , Liwei Xu, Haixin Shan, Yemei Liu, Na Hu, Xiangshu Chen

{"title":"Enabling ultra-low-temperature NH3-SCR with superior H2O/SO2 resistance by a sandwich-structured ERI@CoFe-MnOx@Cor monolithic catalyst","authors":"Yuhan Li , Juntao Wang , Liwei Xu, Haixin Shan, Yemei Liu, Na Hu, Xiangshu Chen","doi":"10.1016/j.seppur.2026.137174","DOIUrl":"10.1016/j.seppur.2026.137174","url":null,"abstract":"<div><div>The development of NH3-SCR catalysts that simultaneously achieve high activity at ultra-low temperatures (<150 °C) and possess robust resistance to H2O and SO2 poisoning remains a significant challenge. In this work, a novel sandwich-structured monolithic catalyst, denoted as ERI@Co1.0Fe0.6-MnOx@Cor (where ERI stands for erionite), was successfully fabricated. This was achieved by sequentially constructing a CoFe-MnOx intermediate catalytic layer via an impregnation-coprecipitation method and an outer zeolite ERI shell through a dip-coating process on the cordierite support. The optimized catalyst exhibits exceptional NOx conversion (>95%) within a broad temperature window of 150–350 °C, achieving complete conversion (100%) at 150 °C. More importantly, the sandwich structure endows the catalyst with superior resistance to H2O and SO2, maintaining over 90% NOx conversion at 150–250 °C even in the presence of 5 vol% H2O and/or 100 ppm SO2. This performance is significantly superior to that of all previously reported counterparts. Characterization results revealed that the Co–Fe–Mn ternary synergy enhances redox properties via increased Mn4+ and chemisorbed oxygen concentrations, while the ERI zeolite shell as a protective barrier was identified as the key factor responsible for the enhanced medium-strength acid sites and exceptional poisoning resistance. Combined with its regenerable stability, this work provides a novel strategy for designing high-performance monolithic SCR catalysts for practical low-temperature applications.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"392 ","pages":"Article 137174"},"PeriodicalIF":9.0,"publicationDate":"2026-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146135586","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}

引用次数: 0

Effect of varying cosolvent on the properties and performance of ZIF-8 for recyclable CO2 adsorption and storage 不同助溶剂对ZIF-8吸附和储存可循环CO2性能的影响

IF 9 1区工程技术

Separation and Purification Technology Pub Date : 2026-06-19 Epub Date: 2026-02-04 DOI: 10.1016/j.seppur.2026.137155

Fraz Saeed Butt, Hadi Hassan, Richard T. Baker

{"title":"Effect of varying cosolvent on the properties and performance of ZIF-8 for recyclable CO2 adsorption and storage","authors":"Fraz Saeed Butt, Hadi Hassan, Richard T. Baker","doi":"10.1016/j.seppur.2026.137155","DOIUrl":"10.1016/j.seppur.2026.137155","url":null,"abstract":"<div><div>CO₂ capture and storage is central to the global warming crisis. A range of technologies is under development, including adsorption, cryogenic separation, and sequestration, for the capture, storage, or utilization of CO₂. Among these, the use of Metal-Organic Framework nanomaterial adsorbents is promising due to their ability to efficiently separate and store CO₂. Here, ZIF-8 nanocrystals were prepared using a facile, one-pot, room temperature cosolvent-based hydrothermal route. This method significantly reduced total cosolvent and ligand consumption (from a ligand (L)/metal (M) ratio of 70 to 8), resulting in a more environmentally friendly and economically viable synthesis. ZIF-8 crystals were prepared using a range of common organic cosolvents, and systematic studies were performed to investigate the influence of cosolvent on their properties. These included crystal phase, crystallinity, molecular structure, bonding type, elemental composition, surface area, and pore volume. The cosolvent-based ZIF-8 samples exhibited excellent thermal stability in both nitrogen and air environments. They also showed impressive CO2 adsorption capacities in adsorption isotherm (0.81 mmol g−1 at 25 °C and 100 kPa for ZIF-8Methanol) and thermogravimetric (∼2.50 wt%/0.57 mmol g−1 for ZIF-8n-hexane) experiments, with excellent recyclability. This study provides a guide for preparing suitable ZIF-8 materials for adsorption and related applications.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"392 ","pages":"Article 137155"},"PeriodicalIF":9.0,"publicationDate":"2026-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146172347","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}

引用次数: 0

Semi-crystalline polymer-blend TFC membranes with enhanced mechanical robustness and mitigated PTMSP aging 半结晶聚合物共混TFC膜具有增强的机械坚固性和减轻PTMSP老化

IF 9 1区工程技术

Separation and Purification Technology Pub Date : 2026-06-19 Epub Date: 2026-02-10 DOI: 10.1016/j.seppur.2026.137216

Na Yeong Oh , Chae Young Go , Young Jae Son , Hyoshin Kwak , Byulhana Min , Ki Chul Kim , Jong Hak Kim

{"title":"Semi-crystalline polymer-blend TFC membranes with enhanced mechanical robustness and mitigated PTMSP aging","authors":"Na Yeong Oh , Chae Young Go , Young Jae Son , Hyoshin Kwak , Byulhana Min , Ki Chul Kim , Jong Hak Kim","doi":"10.1016/j.seppur.2026.137216","DOIUrl":"10.1016/j.seppur.2026.137216","url":null,"abstract":"<div><div>Developing practical thin-film composite (TFC) membranes requires high separation performance, mechanical robustness, reproducible fabrication, and long-term operational stability. In this study, we report an all-polymeric TFC membrane that offers a practical and effective strategy for addressing these challenges through a miscible polymer-blend design. Pebax was incorporated into an amorphous, rubbery PGM copolymer synthesized from three monomers, poly(ethylene glycol) methyl ether methacrylate, glycidyl methacrylate, and amine-functional polypropylene glycol as a structural reinforcement and selectivity-enhancing component. Excellent miscibility between PGM and Pebax, together with the preserved intrinsic semi-crystalline microphase separation within Pebax, collectively enabled concurrent enhancements in mechanical robustness and separation performance. The PGM/Pebax-50 membrane (50:50 wt%) with optimized crystallinity achieved a high CO2 permeance of 1390 GPU with a CO2/N2 selectivity of 43, while exhibiting a robust tensile modulus of 77.1 MPa. Notably, one-year long-term stability tests demonstrated that the PGM/Pebax-50 membrane exhibited significantly improved stability, owing to the protective barrier effect of the PGM/Pebax layer in mitigating the physical aging of the poly(trimethylsilylpropyne) (PTMSP) gutter layer. Molecular dynamics (MD) simulations and density functional theory (DFT) calculations elucidated the gas-polymer interaction energetics and diffusion transport pathways within the blend membranes, and further revealed the mechanistic origins of the mitigated physical aging of PTMSP. Collectively, these findings demonstrate a potentially scalable approach for designing durable, high-performance, all-polymeric TFC membranes suitable for industrial CO2 capture applications.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"392 ","pages":"Article 137216"},"PeriodicalIF":9.0,"publicationDate":"2026-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146155","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}

引用次数: 0

Ionic liquid functionalized polymer: An effective, rapid and recyclable adsorbent for selective removal of benzophenone-type ultraviolet absorbers from water 离子液体功能化聚合物：一种有效、快速、可回收的吸附剂，用于选择性去除水中的二苯甲酮型紫外线吸收剂

IF 9 1区工程技术

Separation and Purification Technology Pub Date : 2026-06-19 Epub Date: 2026-02-10 DOI: 10.1016/j.seppur.2026.137117

Chen Wang , Pingning Jin , Fei Li , Xia Zhang , Jianji Wang , Jing Fan

{"title":"Ionic liquid functionalized polymer: An effective, rapid and recyclable adsorbent for selective removal of benzophenone-type ultraviolet absorbers from water","authors":"Chen Wang , Pingning Jin , Fei Li , Xia Zhang , Jianji Wang , Jing Fan","doi":"10.1016/j.seppur.2026.137117","DOIUrl":"10.1016/j.seppur.2026.137117","url":null,"abstract":"<div><div>The widespread use of benzophenone (BP)-type ultraviolet absorbers has raised growing concerns on the potential risks to both ecosystems and human health. In this study, a novel ionic liquid functionalized polymer (PS-CH2-[BrMim][Cl]) was prepared by chemical grafting and its performance to selectively remove benzophenone-5 (BP-5) from water was studied. It was shown that PS-CH2-[BrMim][Cl] not only exhibited an ultrahigh adsorption capacity of 834.7 mg/g for BP-5 at 3200 ppm, but also effectively enriched 85.9% of trace BP-5 (2.5 ppb) from high-salinity water, with an enrichment factor as high as 859.0. The adsorbent demonstrated rapid adsorption kinetics and 10 min was enough to achieve equilibrium. Even the content of coexisting inorganic ions such as Na+, K+, Ca2+, Mg2+, Cl− and NO3− in water was 50,000 times higher than that of BP-5, the removal efficiency remained almost unaffected. Notably, PS-CH2-[BrMim][Cl] also demonstrated good adsorption performance for benzophenone-type ultraviolet absorbers with similar structure to BP-5 and exhibited excellent recycling durability. Mechanism study indicated that the multiple interactions of hydrogen bonding, electrostatic attraction and ion exchange significantly contributed to the ultra-high adsorption of BP-5. As such, this work provides a new perspective for the removal of benzophenone-type ultraviolet absorbers from real environmental samples.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"392 ","pages":"Article 137117"},"PeriodicalIF":9.0,"publicationDate":"2026-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146776","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}

引用次数: 0

Amine-functionalized SBA-15 molecular sieve for efficient targeted capture of NO2 and SO2 at high space velocity 氨基功能化SBA-15分子筛在高空速下高效靶向捕获NO2和SO2

IF 9 1区工程技术

Separation and Purification Technology Pub Date : 2026-06-19 Epub Date: 2026-02-11 DOI: 10.1016/j.seppur.2026.137226

Fengyin Xiao, Guixian Yu, Youlin Liu, Yuesong Shen

{"title":"Amine-functionalized SBA-15 molecular sieve for efficient targeted capture of NO2 and SO2 at high space velocity","authors":"Fengyin Xiao, Guixian Yu, Youlin Liu, Yuesong Shen","doi":"10.1016/j.seppur.2026.137226","DOIUrl":"10.1016/j.seppur.2026.137226","url":null,"abstract":"<div><div>Addressing large footprint and high comprehensive investment associated with current segmented treatment of SO2 and NOx in industrial flue gas, this study innovatively proposes an integrated technology for dynamic synergistic removal of SO2 and NO2, focusing on developing an amine-functionalized SBA-15 (SBA-15-nTEPA) for selectively capturing SO2 and NO2 from flue gas at low temperature and high gas space velocity. Results demonstrated that the SBA-15-nTEPA with a particle size of 20–40 mesh achieved complete removal of 500 ppm SO2 and 500 ppm NO2 by adsorption at 50–130 °C with GHSV of 150,000 h−1. Notably, the SBA-15-80% TEPA at 110 °C completely removed 500 ppm SO2 and 500 ppm NO2 for 4 min, with NO2 and SO2 breakthrough adsorption capacity of 1.96 mmolg−1 and 1.03 mmol/g, respectively. In situ DRIFTS analysis revealed that the SBA-15-nTEPA capturing SO2 and NO2 via -NH₂ and -NH groups targeted chemisorption, forming N<img>H bonded sulfites, nitrites, and protonated amines. FT-IR, N2 adsorption-desorption, XRD, and SEM analysis demonstrated that the hydrogen-bonding network between amine groups of TEPA and silanol groups of SBA-15 was crucial for stable amine immobilization. At optimal loading, TEPA uniformly filled the mesochannels without disrupting the 2D hexagonal ordered structure of SBA-15. The amine density increased linearly with TEPA loading, providing more chemisorption sites and significantly enhancing SO2 and NO2 adsorption capacity. This study provides critical material support for the synergistic control of multiple pollutants including SO2 and NO2 in dynamic flue gas streams.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"392 ","pages":"Article 137226"},"PeriodicalIF":9.0,"publicationDate":"2026-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146153025","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}

引用次数: 0