Separation and Purification Technology最新文献

Construction of water molecular transport channel by ortho-hydroxyazo-linked framework material for enhanced nanofiltration performance and anti-bacterial properties

IF 8.6 1区工程技术

Separation and Purification Technology Pub Date : 2025-03-01 DOI: 10.1016/j.seppur.2025.132324

Xueling Wang, Weiwei Bai, Man Wang, Jing Wang, Chuyang Tang, Yatao Zhang

{"title":"Construction of water molecular transport channel by ortho-hydroxyazo-linked framework material for enhanced nanofiltration performance and anti-bacterial properties","authors":"Xueling Wang, Weiwei Bai, Man Wang, Jing Wang, Chuyang Tang, Yatao Zhang","doi":"10.1016/j.seppur.2025.132324","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.132324","url":null,"abstract":"Membrane technology has been being widely employed in wastewater treatment in recent years. Developing high-permeability and high-selectivity separation membrane is a key to expand their applications. In practice, biofouling often has a negative effect on membrane performance and membrane life span. Therefore, it is urgently needed to develop novel high-performance separation membrane with fast water molecular transport channel and excellent anti-bacterial properties. Owing to the abundant water molecular transport provided by ortho-hydroxyazo-linked porous organic polymer (o-POP) with polar functional groups and high hydrophilicity, and the excellent anti-bacteria and abundant oxygen-containing functional groups of graphene oxide (GO) material, high stable o-POP/GO composite membrane with abundant transport channel was constructed on a nylon substrate via simple in situ method in this work. The synergistic effect of o-POP and GO effectively improved the ability of water transport and anti-bacteria performance of the composite membrane. The o-POP/GO composite membrane not only possessed high water permeability of 151.3 L m–2h−1 bar−1 and excellent dye rejection (Evans blue (EB): 96.3 %, Methyl blue (MB): 98.0 %, Congo red (CR): 99.0 %, Eriochrome black T (EBT): 97.3 %, Methyl orange (MO): 71.5 %), but also exhibited positive anti-bacterial effect for Escherichia coli.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"278 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143526526","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

Theoretical modeling and performance optimization for the treatment of ferric- and manganese-contaminated groundwater by flow-electrode capacitive deionization

IF 8.6 1区工程技术

Separation and Purification Technology Pub Date : 2025-03-01 DOI: 10.1016/j.seppur.2025.132337

Sitepu Amrina Rosyada, Hyuncheal Lee, Jihun Lim, Seungkwan Hong

{"title":"Theoretical modeling and performance optimization for the treatment of ferric- and manganese-contaminated groundwater by flow-electrode capacitive deionization","authors":"Sitepu Amrina Rosyada, Hyuncheal Lee, Jihun Lim, Seungkwan Hong","doi":"10.1016/j.seppur.2025.132337","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.132337","url":null,"abstract":"Coastal regions face increasing threats from rising sea levels, exacerbating groundwater contamination by salinity and heavy metal pollutants. This study presents a novel integration of theoretical modeling and experimental validation to optimize flow-electrode capacitive deionization (FCDI) for the removal of iron (Fe3+) and manganese (Mn2+) from groundwater. Unlike previous studies focusing solely on empirical approaches, this study develops and validates a comprehensive theoretical framework that accurately predicts specific energy consumption (SEC) and key energy loss mechanisms in FCDI. The model aligns closely with experimental results, confirming its reliability for system optimization. The first application of an optimized FCDI system tailored to Jakarta’s groundwater conditions was demonstrated through parameter optimization, achieving high removal efficiencies of up to 94 % for Fe3+ and Mn2+. Optimal operational conditions—17 wt% flow-electrode mass loading, a flow-electrode flow rate of 45 mL/min, and a feed flow rate of 5 mL/min—were determined to minimize SEC (0.171–0.398 kWh/gion), positioning FCDI as an energy-efficient alternative to conventional groundwater treatment technologies. This study not only advances the practical application of FCDI for dual contamination challenges in brackish and fresh groundwater but also establishes a generalizable modeling approach for optimizing FCDI performance across diverse water matrices. The findings provide a critical step toward scalable and sustainable electrochemical water treatment solutions for coastal regions facing similar contamination challenges.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"8 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143526347","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

Structure-Activity relationship of proton exchange membrane for nuclear wastewater under gamma radiation

IF 8.6 1区工程技术

Separation and Purification Technology Pub Date : 2025-03-01 DOI: 10.1016/j.seppur.2025.132340

Shuai Yang, Yiyang Zeng, Chengjian Xiao, Mao Yang, Hongbing Chen, Wei Huang, Qiang Liu, Xiaolong Fu, Yu Gong, Shuming Peng

{"title":"Structure-Activity relationship of proton exchange membrane for nuclear wastewater under gamma radiation","authors":"Shuai Yang, Yiyang Zeng, Chengjian Xiao, Mao Yang, Hongbing Chen, Wei Huang, Qiang Liu, Xiaolong Fu, Yu Gong, Shuming Peng","doi":"10.1016/j.seppur.2025.132340","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.132340","url":null,"abstract":"As the most widely used proton exchange membrane (Nafion), the impact of irradiation on the structure and properties of the membrane used in nuclear wastewater is a crucial focus of attention. This work investigates the structure–activity relationship of the wet Nafion under gamma irradiation. The membrane tensile strength decreased by 53.25 % and proton conductivity decreased by 50.96 % at 800 kGy. Long-term oxidation stability tests showed that the 600 kGy membrane could no longer be used after one cycle, with a 43.59 % decrease in electrical power and hydrogen permeation density of 37.78 mA/cm2. The microstructure analysis shows that the membrane has not undergone chain breakage, but the molecular chain structure of the membrane has changed, increasing in free volume. Therefore, a novel structure–activity relationship was derived for the irradiation of membranes in aqueous environments, where wet membranes undergo co-swelling with radiation energy and water under gamma irradiation, increasing the free volume of the membrane structure. By combining theoretical simulations, different free volume models of membranes were constructed to verify the structure–activity relationship between mechanical properties, proton conductivity, hydrogen permeation performance, and free volume. This work provides a feasible structure–activity relationship for proton exchange membranes in nuclear wastewater under gamma radiation.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"28 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143526522","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

Selective removal and utilization of copper from electroplating wastewater by modified MXene-based capacitive deionization

IF 8.6 1区工程技术

Separation and Purification Technology Pub Date : 2025-03-01 DOI: 10.1016/j.seppur.2025.132303

Kaixiang Jiang, Jianwei Zhang, Bin Xu, Zilong Han, Zheng Wang, Zhe Li, Jun Luo, Jie Zhang, Changhai Ji, Zhihao Chen, Wenzhong Yang

{"title":"Selective removal and utilization of copper from electroplating wastewater by modified MXene-based capacitive deionization","authors":"Kaixiang Jiang, Jianwei Zhang, Bin Xu, Zilong Han, Zheng Wang, Zhe Li, Jun Luo, Jie Zhang, Changhai Ji, Zhihao Chen, Wenzhong Yang","doi":"10.1016/j.seppur.2025.132303","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.132303","url":null,"abstract":"Capacitive deionization (CDI) technology has promising potential for the removal of copper ions from electroplating wastewater. In this study, a new kind of FeS2 modified MXene electrode material with three-dimensional mutual support structure was synthesized, which has excellent hydrophilicity, electrical conductivity, and specific redox activity for copper ions. Therefore, this material was applied for the selective removal of copper ions from electroplating wastewater through the use of CDI. The FeS2/MXene electrode demonstrated excellent electrosorption performance, with an electrosorption capacity (EC) of 80.02 mg g−1 and a removal efficiency of 96.02 %. The electrosorption mechanism involves three synergistic pathways: (1) Faradaic redox reactions between Fe2+/Fe3+ and Cu2+/Cu+, (2) ion intercalation, and (3) capacitive adsorption. Notably, the material exhibited remarkable selectivity for Cu2+ even in mixed ion systems, with distribution coefficients exceeding 104 mL g−1. Additionally, Cu2+ in the actual electroplating wastewater was efficiently removed (99.97 %), meeting the water quality standard for metal plating and chemical coating process. Furthermore, the electrosorption-saturated electrodes with copper ions were reused as raw materials to prepare Cu@FeS2/MXene electrocatalysts for nitrate (NO3–-N) reduction. The electrocatalytic efficiency of NO3–-N was 86.9 %, and the selectivity for nitrogen (N2) reached 98.3 %. This study opens up a promising approach not only for selectively removing copper from wastewater but also for utilizing copper-saturated electrodes, demonstrating a sustainable and efficient strategy for water treatment and resource recovery.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"32 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143526525","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

Molecular modeling of ice crystallization and salt rejection mechanisms in freeze desalination

IF 8.6 1区工程技术

Separation and Purification Technology Pub Date : 2025-03-01 DOI: 10.1016/j.seppur.2025.132334

Khadije El Kadi, Hongtao Zhang, Sohail Murad, Isam Janajreh

{"title":"Molecular modeling of ice crystallization and salt rejection mechanisms in freeze desalination","authors":"Khadije El Kadi, Hongtao Zhang, Sohail Murad, Isam Janajreh","doi":"10.1016/j.seppur.2025.132334","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.132334","url":null,"abstract":"This work investigates the complex dynamics of ice crystal growth and salt entrapment in saltwater freeze desalination (FD). Classical molecular dynamics (MD) simulations have been developed to analyze the behavior of salt ions at the evolving ice-liquid interface during saline water freezing process. Valuable atomic-level insights have been gained into the ion rejection mechanisms by systematically exploring various salinity levels, ranging from 0 g/L (pure water) to 70 g/L (brine) and supercooling degrees of ΔT = -5 K to −25 K. Results reveal a significant limitation to ice formation in the presence of salt ions, with crystallization rates reducing by 40 % to 90 % for 35–70 g/L solutions compared to pure water at various supercooling temperatures. The Péclet number illustrates the interplay between ice growth rate and ion diffusion at the ice-liquid interface. At lower salinity levels (35 g/L) and higher supercooling (ΔT = -25 °C), the Péclet number (Pe = 1.1) indicates intensified salt ion entrapment within the growing ice lattice. Conversely, at higher salinity levels (70 g/L), the average effective diffusion coefficient of salt ions remains relatively stable, indicating a consistent diffusion process despite temperature variations. This stability in diffusion results in uniformly higher rejection rates for the 70 g/L solution compared to the 35 g/L solution, leading to a Péclet number of < 1 at various freezing temperatures. Results also revealed ion-specific entrapment behavior, with a higher likelihood of chloride entrapment in the ice phase. The evolution of salt concentration in the growing ice crystal was validated experimentally, showing a strong correlation and matching findings to MD simulations. These findings shed light on the interrelated mechanisms in saltwater crystallization. Understanding these details could lead to advancements in the FD process, thereby increasing its potential for industrialization in various fields.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"34 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143526524","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

MOF-like zirconium-doped prussian blue decorated microporous membranes for efficient arsenate (V) capture from wastewater

IF 8.6 1区工程技术

Separation and Purification Technology Pub Date : 2025-03-01 DOI: 10.1016/j.seppur.2025.132339

Kaige Dong, Yuhang Cheng, Mengmeng Jia, Sakil Mahmud, Manyu Deng, Zhuoran Yi, Weiting Wang, Yimeng Feng, Dahao Lian, Gaosheng Zhang, Zhu Xiong

{"title":"MOF-like zirconium-doped prussian blue decorated microporous membranes for efficient arsenate (V) capture from wastewater","authors":"Kaige Dong, Yuhang Cheng, Mengmeng Jia, Sakil Mahmud, Manyu Deng, Zhuoran Yi, Weiting Wang, Yimeng Feng, Dahao Lian, Gaosheng Zhang, Zhu Xiong","doi":"10.1016/j.seppur.2025.132339","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.132339","url":null,"abstract":"As (V) poses significant environmental and health risks due to its toxicity, making efficient wastewater treatment technologies essential. In this study, we introduce a novel composite material: MOF-like zirconium (Zr)-doped Prussian blue (PB) analogs decorated on polytetrafluoroethylene microporous membranes (Zr-PBAsx-PDA/PEI-M) for As (V) adsorption. Comprehensive characterization techniques, confirmed the successful incorporation of Zr into PB crystals and its growth on the membrane surface through PDA/PEI interlayers. We systematically explored the effects of varying Fe-Zr modification ratios, finding that Zr-PBAs3-PDA/PEI-M (Fe: Zr = 2:3) exhibited the optimal performance for As (V) removal and adsorption capacity, with a more intact and densely distributed crystal structure. It demonstrated that Zr-O bonding plays a crucial role in the adsorption mechanism, forming a double-dentate mononuclear structure with As (V). Moreover, the Zr-PBAs3-PDA/PEI-M’s adsorption capacity of As (V) was comprehensively assessed by key factors such as temperature, pH, operating pressure, natural organic matter (NOM), and initial As (V) concentration during wastewater treatment, which exhibited the excellent resistance to interference in removing As (V). Remarkably, Zr-PBAs3-PDA/PEI-M retained its high adsorption capacity across three cycles of reuse, highlighting its excellent stability and reusability. When tested on simulated Pearl River water samples containing As (V), the material achieved filtrate concentrations well below 0.5 mg/L, in compliance with China’s Comprehensive Wastewater Discharge Standard. This study presents a promising solution for efficient As (V) removal in wastewater, offering practical insights into its potential application for real-world water treatment challenges.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"33 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143526523","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

Carboxymethyl chitosan hydrogel network constructed PES ultrafiltration membrane to separate bovine serum albumin from collagen

IF 8.6 1区工程技术

Separation and Purification Technology Pub Date : 2025-02-28 DOI: 10.1016/j.seppur.2025.132314

Yafang Wu, Yujia Tong, Li Zhang, Xiaohui Ju, Chenxuan Shao, Qi Zhang, Weixing Li, Weihong Xing

{"title":"Carboxymethyl chitosan hydrogel network constructed PES ultrafiltration membrane to separate bovine serum albumin from collagen","authors":"Yafang Wu, Yujia Tong, Li Zhang, Xiaohui Ju, Chenxuan Shao, Qi Zhang, Weixing Li, Weihong Xing","doi":"10.1016/j.seppur.2025.132314","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.132314","url":null,"abstract":"Ultrafiltration membrane for purification of proteins represents a significant research challenge. In order to improve the uniformity of membrane pores, carboxymethyl chitosan hydrogel (TB-g-MC) grafted by methacrylic anhydride and 2, 3, 4-trihydroxybenzaldehyd was proposed to construct polyethersulfone (PES) ultrafiltration membrane with crosslinked network. TB-g-MC with better hydrophilicity could effectively slow down the phase transition process, which led to more uniform membrane pores. The water flux of the PES/TB-g-MC membrane arrived at 880.2 L·m−2·h−1, three times higher than that of the pristine membrane. The rejection of bovine serum albumin (BSA) was 99.5 % with the collagen permeability of 99.9 %, which showed that the developed membrane had narrow pore size distribution and better separation performance. Furthermore, it exhibited noteworthy anti-fouling characteristics with the flux recovery of 90 %. The proposed membrane with hydrogel network structure will be prospective for protein purification and production in biomedical field.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"35 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143526527","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

Development of an integrated bio-based cyanide production system for recovery of Au from waste printed circuit boards

IF 8.6 1区工程技术

Separation and Purification Technology Pub Date : 2025-02-28 DOI: 10.1016/j.seppur.2025.132332

Duy Tho Tran, Xiaoyu Lin, Thao My Nguyen, Myung-Hee Song, Yeoung-Sang Yun

{"title":"Development of an integrated bio-based cyanide production system for recovery of Au from waste printed circuit boards","authors":"Duy Tho Tran, Xiaoyu Lin, Thao My Nguyen, Myung-Hee Song, Yeoung-Sang Yun","doi":"10.1016/j.seppur.2025.132332","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.132332","url":null,"abstract":"Electronic waste (E-waste) contains valuable metals that can be recovered, but current industrial recycling often results in significant losses of precious metals like Au, which should be minimized. Biocyanidation, which uses cyanogenic bacteria to produce cyanide, offers advantages such as cost-effectiveness and high recovery rates for Au leaching. However, its application is hindered by low recovery efficiency and cyanide volatility at the typical cultivation pH (∼9). Exploiting this characteristic, this study proposes an integrated system to separate biologically produced cyanide from microbial cultures and subsequently utilize it to leach Au from waste printed circuit boards (WPCBs). The integrated system includes a fermenter for cultivating Chromobacterium violaceum and a collection system where 1 M NaOH is used to absorb cyanide from the fermenter. In the collection system, cyanide concentrations reached 163.2 ± 13.8 ppm after eight days of cultivation—significantly higher than the cyanide concentration typically found in C. violaceum culture broth. The Au leaching efficiency of the biologically produced cyanide reached 90.5 ± 1.4 %, comparable to that of chemical cyanide. After leaching, 97.7 ± 0.0 % of the Au was recovered within one hour using an ion-exchange resin. Afterward, the residual cyanide in the bioleachate was also treated by mixing it with fermenter broth, achieving a 96.8 ± 1.5 % removal rate. Overall, the integrated system proposed in this study achieves high Au leaching efficiency using biologically produced cyanide, comparable to that of chemically synthesized cyanide, while preserving the eco-friendly and sustainable nature of bio-cyanidation.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"2 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143526528","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

High-efficient removal of dye across a wide pH range over alkali lignin-based adsorbent: Batch experiments and DFT mechanistic analysis

IF 8.1 1区工程技术

Separation and Purification Technology Pub Date : 2025-02-28 DOI: 10.1016/j.seppur.2025.132322

Xiaonuo Xu , Yueli Wen , Yuxuan Zhao , Bin Wang , Maohong Fan , Zhiju Chen , Shiyun Guo , Wei Huang

{"title":"High-efficient removal of dye across a wide pH range over alkali lignin-based adsorbent: Batch experiments and DFT mechanistic analysis","authors":"Xiaonuo Xu , Yueli Wen , Yuxuan Zhao , Bin Wang , Maohong Fan , Zhiju Chen , Shiyun Guo , Wei Huang","doi":"10.1016/j.seppur.2025.132322","DOIUrl":"10.1016/j.seppur.2025.132322","url":null,"abstract":"<div><div>As the primary byproduct of paper making industry, alkali lignin can lead to biological anoxia and disrupt aquatic ecosystems. Application of it in wastewater treatment can not only realize its high value utilization, but realizing reduction of carbon emission. In this study, a renewable alkali lignin-modified MOFs adsorbent AL@PCN-250 was prepared by in-situ synthesis strategy and was used to adsorb and remove Methylene blue (MB) and Rhodamine B (RhB) from textile wastewater. The effects of adsorbent dosage, pH, contact time, and initial concentration on the adsorption behavior of RhB and MB by AL@PCN-250 were investigated to evaluate its adsorption capacity and reusability. The results showed that the maximum adsorption capacities of AL@PCN-250 for RhB and MB were 299.292 mg g−1 and 209.260 mg g−1, respectively. The Sips models fitted the adsorption isotherms well, indicating that the adsorption sites on the surface of AL@PCN-250 are heterogeneous, with varying affinities for the adsorbates. Notably, after six cycles, the removal efficiency of AL@PCN-250 for the two dyes remained above 80 %. Experimental and theoretical calculations revealed that adsorption mainly involved hydrogen bonding, Van der Waals’ force, π-π interactions, and electrostatic interactions. This study provides new insights into the high-value utilization of lignin and the synthesis of efficient adsorbents.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"363 ","pages":"Article 132322"},"PeriodicalIF":8.1,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143527054","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

One-pot hydrothermal synthesis of a flower-like CoO/CoP3 electrocatalyst for improving overall water splitting

IF 8.1 1区工程技术

Separation and Purification Technology Pub Date : 2025-02-28 DOI: 10.1016/j.seppur.2025.132318

Yongping Luo , Guangzhen Zhang , Yongya Wang , Yu Xie , Yike Liu , Xianchang Li , Shunjian Xu

{"title":"One-pot hydrothermal synthesis of a flower-like CoO/CoP3 electrocatalyst for improving overall water splitting","authors":"Yongping Luo , Guangzhen Zhang , Yongya Wang , Yu Xie , Yike Liu , Xianchang Li , Shunjian Xu","doi":"10.1016/j.seppur.2025.132318","DOIUrl":"10.1016/j.seppur.2025.132318","url":null,"abstract":"<div><div>In this work, a flower-like CoO/CoP3 complex was in situ synthesized through one-pot hydrothermal method. The effects of Co/P ratios and P doping on the electrocatalytic overall water splitting was investigated. The flower-like CoO/CoP3 composite has a larger specific surface area, lower internal resistance and faster electron transfer rate, thereby improving the electrocatalytic performance for hydrogen and oxygen evolution reactions (HER and OER). In OER, the overpotential is only 264 mV and the Tafel slope is 93 mV dec−1 at 10 mA cm−2. Its OER activity is better than that of commercial RuO2. At the same time, In HER, the overpotential and Tafel slope at 10 mA cm−2 are 205 mV and 137 mV dec−1, respectively. This study presents a comprehensive and synergistic strategy involving the Co-to-P ratio and P content, offering valuable insights for other electrocatalysts employed in overall water splitting.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"363 ","pages":"Article 132318"},"PeriodicalIF":8.1,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143520630","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