The integration of 3D printing technology into catalytic water treatment has opened new avenues for designing advanced catalysts with customized structures and functionalities. However, a comprehensive review of how 3D-printed catalysts enhance performance, stability, and efficiency across different oxidation systems remains lacking. This review addresses that gap by summarizing recent advancements in 3D-printed catalysts for advanced oxidation processes, including Fenton-like reactions, photocatalysis, and electrocatalysis. Key aspects such as material composition, structural design, and fabrication techniques are critically evaluated. Notably, 3D-printed catalysts used in Fenton-like and photocatalytic processes benefit from improved mass transfer and enhanced active site exposure, leading to more efficient pollutant degradation. Additionally, iron- and non-metallic-based catalysts, particularly those with triply periodic minimal surface (TPMS) structures, demonstrate superior oxidation performance. The incorporation of visible light-responsive materials such as BiVO4 and g-C3N4 further boosts catalytic activity under natural sunlight. These insights pave the way for the development of more efficient and sustainable catalysts, supporting global environmental goals and promoting the adoption of 3D printing technologies in industrial applications. These insights contribute to the development of efficient and eco-friendly catalytic systems, supporting global sustainability goals and promoting the broader adoption of 3D printing technologies in industrial water treatment applications.Despite extensive research on catalytic water treatment, a systematic evaluation of the role of 3D-printed catalysts in optimizing reaction efficiency, stability, and reusability remains lacking. This review aims to fill this gap by critically analyzing the materials, structural designs, and fabrication techniques of 3D-printed catalysts and evaluating their impact on Fenton-like oxidation, photocatalysis, and electrocatalysis.
将三维打印技术融入催化水处理为设计具有定制结构和功能的先进催化剂开辟了新途径。然而，关于三维打印催化剂如何在不同氧化体系中提高性能、稳定性和效率的全面综述仍然缺乏。本综述总结了用于高级氧化过程（包括类芬顿反应、光催化和电催化）的三维打印催化剂的最新进展，从而弥补了这一空白。文章对材料组成、结构设计和制造技术等关键方面进行了严格评估。值得注意的是，用于类芬顿反应和光催化过程的三维打印催化剂可改善传质和提高活性位点暴露，从而实现更高效的污染物降解。此外，铁基和非金属基催化剂，尤其是具有三周期最小表面（TPMS）结构的催化剂，表现出卓越的氧化性能。可见光响应材料（如 BiVO4 和 g-C3N4）的加入进一步提高了催化剂在自然阳光下的活性。这些见解为开发更高效、更可持续的催化剂铺平了道路，有助于实现全球环境目标，并促进 3D 打印技术在工业应用中的采用。尽管对催化水处理进行了广泛的研究，但仍然缺乏对 3D 打印催化剂在优化反应效率、稳定性和可重复使用性方面作用的系统评估。本综述旨在通过对三维打印催化剂的材料、结构设计和制造技术进行批判性分析，并评估其对芬顿类氧化、光催化和电催化的影响，从而填补这一空白。
{"title":"Revolutionizing catalytic water treatment: A critical review on the role of 3D printed catalysts","authors":"Ning Li, Yitong Wang, Xianglin Chang, Wenjie Gao, Lingchao Kong, Beibei Yan, Guanyi Chen","doi":"10.1016/j.seppur.2025.132194","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.132194","url":null,"abstract":"The integration of 3D printing technology into catalytic water treatment has opened new avenues for designing advanced catalysts with customized structures and functionalities. However, a comprehensive review of how 3D-printed catalysts enhance performance, stability, and efficiency across different oxidation systems remains lacking. This review addresses that gap by summarizing recent advancements in 3D-printed catalysts for advanced oxidation processes, including Fenton-like reactions, photocatalysis, and electrocatalysis. Key aspects such as material composition, structural design, and fabrication techniques are critically evaluated. Notably, 3D-printed catalysts used in Fenton-like and photocatalytic processes benefit from improved mass transfer and enhanced active site exposure, leading to more efficient pollutant degradation. Additionally, iron- and non-metallic-based catalysts, particularly those with triply periodic minimal surface (TPMS) structures, demonstrate superior oxidation performance. The incorporation of visible light-responsive materials such as BiVO<sub>4</sub> and g-C<sub>3</sub>N<sub>4</sub> further boosts catalytic activity under natural sunlight. These insights pave the way for the development of more efficient and sustainable catalysts, supporting global environmental goals and promoting the adoption of 3D printing technologies in industrial applications. These insights contribute to the development of efficient and eco-friendly catalytic systems, supporting global sustainability goals and promoting the broader adoption of 3D printing technologies in industrial water treatment applications.Despite extensive research on catalytic water treatment, a systematic evaluation of the role of 3D-printed catalysts in optimizing reaction efficiency, stability, and reusability remains lacking. This review aims to fill this gap by critically analyzing the materials, structural designs, and fabrication techniques of 3D-printed catalysts and evaluating their impact on Fenton-like oxidation, photocatalysis, and electrocatalysis.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"17 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143477422","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}
Pub Date : 2025-02-23DOI: 10.1016/j.seppur.2025.132255
Jinjun Deng , Xin Zhang , Zeyu Gu , Yanbin Tong , Fankun Meng , Liqun Sun , Hongsheng Liu , Qingji Wang
Alkali-surfactant-polymer (ASP) flooding produced water exhibits high emulsification, high viscosity, and low interfacial tension of emulsified oil. This type of oilfield wastewater poses numerous challenges, including difficulties in oil–water separation, turbidity removal during purification, and unqualified reinjection treatment indicators. In this study, molecular dynamics simulations were used to analyze the high stability of ASP flooding produced water. A novel method for ultrasonic-assisted ionic liquid treatment of ASP flooding produced water is proposed. Short-time ultrasonic treatment was utilized to destabilize the oil–water interface and create favorable conditions for ionic liquid purification. After 4 min of ultrasonic treatment, the addition of 340 mg·L-1 of [C16MIm]Br or [C16MIm]Cl to simulated produced water achieved turbidity removal efficiencies of 98.9 % and 98.6 %, and oil removal efficiencies of 97.9 % and 97.4 %, respectively. The flocs and suspended substances in the treated water were analyzed through instrumental characterization. From a microscopic perspective, the purification mechanism was elucidated, revealing that the synergistic effect of ultrasonic-assisted ionic liquid demulsifier and flocculation is the key to achieving effective purification. Meanwhile, the preliminary ultrasonic treatment can reduce the dosage of ionic liquid by 10 %, which has high economic benefits. This study provides unique ideas and solutions for the advancement of treatment technology for highly emulsified oily wastewater, especially ASP flooding produced water, and has important reference significance for the research on the purification mechanism of ultrasonic-assisted ionic liquids.
{"title":"High-efficiency purification of alkali-surfactant-polymer flooding produced water by ultrasonication-ionic liquids combination: Performance and separation mechanism","authors":"Jinjun Deng , Xin Zhang , Zeyu Gu , Yanbin Tong , Fankun Meng , Liqun Sun , Hongsheng Liu , Qingji Wang","doi":"10.1016/j.seppur.2025.132255","DOIUrl":"10.1016/j.seppur.2025.132255","url":null,"abstract":"<div><div>Alkali-surfactant-polymer (ASP) flooding produced water exhibits high emulsification, high viscosity, and low interfacial tension of emulsified oil. This type of oilfield wastewater poses numerous challenges, including difficulties in oil–water separation, turbidity removal during purification, and unqualified reinjection treatment indicators. In this study, molecular dynamics simulations were used to analyze the high stability of ASP flooding produced water. A novel method for ultrasonic-assisted ionic liquid treatment of ASP flooding produced water is proposed. Short-time ultrasonic treatment was utilized to destabilize the oil–water interface and create favorable conditions for ionic liquid purification. After 4 min of ultrasonic treatment, the addition of 340 mg·L<sup>-1</sup> of [C<sub>16</sub>MIm]Br or [C<sub>16</sub>MIm]Cl to simulated produced water achieved turbidity removal efficiencies of 98.9 % and 98.6 %, and oil removal efficiencies of 97.9 % and 97.4 %, respectively. The flocs and suspended substances in the treated water were analyzed through instrumental characterization. From a microscopic perspective, the purification mechanism was elucidated, revealing that the synergistic effect of ultrasonic-assisted ionic liquid demulsifier and flocculation is the key to achieving effective purification. Meanwhile, the preliminary ultrasonic treatment can reduce the dosage of ionic liquid by 10 %, which has high economic benefits. This study provides unique ideas and solutions for the advancement of treatment technology for highly emulsified oily wastewater, especially ASP flooding produced water, and has important reference significance for the research on the purification mechanism of ultrasonic-assisted ionic liquids.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"363 ","pages":"Article 132255"},"PeriodicalIF":8.1,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143477419","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}
Pub Date : 2025-02-23DOI: 10.1016/j.seppur.2025.132246
Yi-Long Li, Qiang Zhang, Lu-Lu Wang, Lan Lan, Tong-Liang Hu
In the industrial field, building suitable adsorbents capable of enriching and purifying methane (CH4) from coalbed methane is a necessary but challenging task. Herein, we selected a robust and scalable manganese-based metal–organic framework (Mn-TAZ) with suitable channel sizes and encircling hydrogen-bonding nanopockets, which are benefit to preferentially capture CH4 over N2. Mn-TAZ showed a high volumetric adsorption for CH4 of 39.2 cm3 cm−3 at 298 K and 1.0 bar, and a good adsorption selectivity for CH4/N2 mixture. The separation mechanisms revealed by grand canonical Monte Carlo simulations and density functional theory calculations are mainly attributed to the appropriate nanopockets and the large number of exposed N atoms in the one-dimensional channels in Mn-TAZ, which have a greater affinity for CH4 than N2. Dynamic breakthrough experiments conducted under ambient conditions indicate that Mn-TAZ has great potential for the practical separation of CH4/N2, which is promising for application in relevant industrial processes. In addition, it is expected to enable large-scale batch synthesis in the industrial field by adjusting the initial feed amount to achieve scaled-up production. Both experiments and theoretical calculations clearly show that the strategy of constructing hydrogen-bonding nanopockets and abundant binding sites within MOFs is a feasible method to achieve efficient separation of CH4/N2. This work provides useful insights for the development of high-efficiency MOF adsorbents to solve intractable industrial separation challenges.
{"title":"A scalable and robust metal–organic framework with encircling hydrogen-bonding nanopockets for effective coal-bed methane purification","authors":"Yi-Long Li, Qiang Zhang, Lu-Lu Wang, Lan Lan, Tong-Liang Hu","doi":"10.1016/j.seppur.2025.132246","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.132246","url":null,"abstract":"In the industrial field, building suitable adsorbents capable of enriching and purifying methane (CH<sub>4</sub>) from coalbed methane is a necessary but challenging task. Herein, we selected a robust and scalable manganese-based metal–organic framework (Mn-TAZ) with suitable channel sizes and encircling hydrogen-bonding nanopockets, which are benefit to preferentially capture CH<sub>4</sub> over N<sub>2</sub>. Mn-TAZ showed a high volumetric adsorption for CH<sub>4</sub> of 39.2 cm<sup>3</sup> cm<sup>−3</sup> at 298 K and 1.0 bar, and a good adsorption selectivity for CH<sub>4</sub>/N<sub>2</sub> mixture. The separation mechanisms revealed by grand canonical Monte Carlo simulations and density functional theory calculations are mainly attributed to the appropriate nanopockets and the large number of exposed N atoms in the one-dimensional channels in Mn-TAZ, which have a greater affinity for CH<sub>4</sub> than N<sub>2</sub>. Dynamic breakthrough experiments conducted under ambient conditions indicate that Mn-TAZ has great potential for the practical separation of CH<sub>4</sub>/N<sub>2</sub>, which is promising for application in relevant industrial processes. In addition, it is expected to enable large-scale batch synthesis in the industrial field by adjusting the initial feed amount to achieve scaled-up production. Both experiments and theoretical calculations clearly show that the strategy of constructing hydrogen-bonding nanopockets and abundant binding sites within MOFs is a feasible method to achieve efficient separation of CH<sub>4</sub>/N<sub>2</sub>. This work provides useful insights for the development of high-efficiency MOF adsorbents to solve intractable industrial separation challenges.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"118 51-52 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143477719","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}
Pub Date : 2025-02-23DOI: 10.1016/j.seppur.2025.132178
Umair Baig, Abdul Waheed, Hilal Ahmad, Isam H. Aljundi
The performance of the desalination membranes has been improved by exploiting the potential of interfacial polymerization by using different combinations of reacting monomers. However, for successful interfacial polymerization, the aqueous amine must diffuse to the organic phase resulting in polyamide growth. Owing to that stringent requirement, using an essential amine 3,5-diaminobenzoic acid (DABA) for membrane fabrication in the literature has not been successful. The 3,5-diaminobenzoic acid is an analog of meta-phenylenediamine with an additional carboxylic group on the benzene ring. The presence of an additional carboxylic group in the case of 3,5-diaminobenzoic acid makes it attractive to develop a membrane with additional carboxylic groups in the active layer of the membrane. However, this carboxylic group hinders the diffusion of the 3,5-diaminobenzoic acid during interfacial polymerization, hence no appreciable growth of polyamide active layer. The current study resolved this challenge by masking the carboxylic group through methyl esterification yielding a methyl-ester-containing version N-DABA. When used during interfacial polymerization, the N-DABA yielded a dense polyamide active layer. To take advantage of the additional carboxylic group of 3,5-diaminobenzoic acid, the methyl ester group was partially hydrolyzed using an in-situ basic hydrolysis approach. Hence, two membranes were fabricated in the current study, N-DABA/TMC and m-N-DABA/TMC membrane, and several desalination experiments were performed. The desalination experiments revealed that the membranes possessed preferential rejection of SO42− ions (Na2SO4) reaching around 96 % for the N-DABA/TMC membrane with a permeate flux of around 25.7 L m−2h−1 at 20 bar. In the m-N-DABA/TMC membrane, a rejection of around 94.7 % was recorded for Na2SO4. However, a significant enhancement of nearly 2 folds was recorded in the permeate flux reaching around 51.4 L m−2h−1 at 20 bar. Moreover, the membranes showed a significant enhancement in the antifouling properties of achieving normalized fluxes of 0.88 and 0.73 for the N-DABA/TMC and m-N-DABA/TMC membranes, respectively
{"title":"Synthesis of methyl 3,5-diaminobenzoate to develop polyamide thin film composite membrane for investigating the impact of in-situ methyl hydrolysis on its permeate flux and sulfate rejection","authors":"Umair Baig, Abdul Waheed, Hilal Ahmad, Isam H. Aljundi","doi":"10.1016/j.seppur.2025.132178","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.132178","url":null,"abstract":"The performance of the desalination membranes has been improved by exploiting the potential of interfacial polymerization by using different combinations of reacting monomers. However, for successful interfacial polymerization, the aqueous amine must diffuse to the organic phase resulting in polyamide growth. Owing to that stringent requirement, using an essential amine 3,5-diaminobenzoic acid (DABA) for membrane fabrication in the literature has not been successful. The 3,5-diaminobenzoic acid is an analog of <em>meta</em>-phenylenediamine with an additional carboxylic group on the benzene ring. The presence of an additional carboxylic group in the case of 3,5-diaminobenzoic acid makes it attractive to develop a membrane with additional carboxylic groups in the active layer of the membrane. However, this carboxylic group hinders the diffusion of the 3,5-diaminobenzoic acid during interfacial polymerization, hence no appreciable growth of polyamide active layer. The current study resolved this challenge by masking the carboxylic group through methyl esterification yielding a methyl-ester-containing version N-DABA. When used during interfacial polymerization, the N-DABA yielded a dense polyamide active layer. To take advantage of the additional carboxylic group of 3,5-diaminobenzoic acid, the methyl ester group was partially hydrolyzed using an <em>in-situ</em> basic hydrolysis approach. Hence, two membranes were fabricated in the current study, N-DABA/TMC and m-N-DABA/TMC membrane, and several desalination experiments were performed. The desalination experiments revealed that the membranes possessed preferential rejection of SO<sub>4</sub><sup>2−</sup> ions (Na<sub>2</sub>SO<sub>4</sub>) reaching around 96 % for the N-DABA/TMC membrane with a permeate flux of around 25.7 L m<sup>−2</sup>h<sup>−1</sup> at 20 bar. In the m-N-DABA/TMC membrane, a rejection of around 94.7 % was recorded for Na<sub>2</sub>SO<sub>4</sub>. However, a significant enhancement of nearly 2 folds was recorded in the permeate flux reaching around 51.4 L m<sup>−2</sup>h<sup>−1</sup> at 20 bar. Moreover, the membranes showed a significant enhancement in the antifouling properties of achieving normalized fluxes of 0.88 and 0.73 for the N-DABA/TMC and m-N-DABA/TMC membranes, respectively","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"15 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143477418","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}
In an era of increasing environmental concern, this study pioneers the synthesis of Ap@BC, a carbonized material produced from biochar derived from waste biomass and activated with (NH4)2S2O8. Sodium alginate was utilized to prepare adsorbent beads from this material, which were investigated for their remarkable potential as an efficient adsorbent for MB dye, employing both batch and fixed-bed column systems. Various characterization techniques, including TGA, FTIR, Raman spectroscopy, and SEM, provided valuable insights into the surface properties of Ap@BC, significantly enhancing its dye-binding capabilities. Kinetic analyses revealed that MB removal adheres to the Pseudo-second-order kinetic model, indicative of a chemisorption mechanism, while adsorption equilibrium data exhibited a robust correlation with the Freundlich isotherm model, highlighting the heterogeneous adsorption characteristics of Ap@BC. The monolayer adsorption capacity of 52.6 mg/g, as determined by the Langmuir isotherm model. The fixed-bed column experiment showed that the efficiency of the column enhanced significantly with increased bed depth and reduced flow rates, emphasizing the operational advantages of Ap@BC in real-world applications. The robust fit of the kinetic data with Thomas and Yoon Nelson models highlights its feasibility for large-scale deployment. Furthermore, potential mechanisms of MB adsorption encompassing n-π interaction, hydrogen bonding, and electrostatic interactions illustrate the multifaceted approach of Ap@BC in addressing dye pollution. Altogether, these findings position Ap@BC as a promising and effective adsorbent in wastewater purification and environmental remediation.
{"title":"Thiazine dye sorption onto (NH4)2S2O8 treated bio-adsorbent: Implications for batch and fixed-bed column applications","authors":"Payal Maiti, Abesh Chatterjee, Asmita Mishra, Subrata Biswas, , B.C. Meikap","doi":"10.1016/j.seppur.2025.132256","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.132256","url":null,"abstract":"In an era of increasing environmental concern, this study pioneers the synthesis of Ap@BC, a carbonized material produced from biochar derived from waste biomass and activated with (NH<sub>4</sub>)<sub>2</sub>S<sub>2</sub>O<sub>8</sub>. Sodium alginate was utilized to prepare adsorbent beads from this material, which were investigated for their remarkable potential as an efficient adsorbent for MB dye, employing both batch and fixed-bed column systems. Various characterization techniques, including TGA, FTIR, Raman spectroscopy, and SEM, provided valuable insights into the surface properties of Ap@BC, significantly enhancing its dye-binding capabilities. Kinetic analyses revealed that MB removal adheres to the Pseudo-second-order kinetic model, indicative of a chemisorption mechanism, while adsorption equilibrium data exhibited a robust correlation with the Freundlich isotherm model, highlighting the heterogeneous adsorption characteristics of Ap@BC. The monolayer adsorption capacity of 52.6 mg/g, as determined by the Langmuir isotherm model. The fixed-bed column experiment showed that the efficiency of the column enhanced significantly with increased bed depth and reduced flow rates, emphasizing the operational advantages of Ap@BC in real-world applications. The robust fit of the kinetic data with Thomas and Yoon Nelson models highlights its feasibility for large-scale deployment. Furthermore, potential mechanisms of MB adsorption encompassing n-π interaction, hydrogen bonding, and electrostatic interactions illustrate the multifaceted approach of Ap@BC in addressing dye pollution. Altogether, these findings position Ap@BC as a promising and effective adsorbent in wastewater purification and environmental remediation.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"19 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143477420","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}
Pub Date : 2025-02-23DOI: 10.1016/j.seppur.2025.132249
Haonuan Zhao, Viktar Yasnou, Nikolay Nesterenko, Diogenes Honorato Piva, Louwanda Lakiss, Marie Lozier- Desmurs, Valentin Valtchev
Sorption-based atmospheric water harvesting (AWH) is regarded as an efficient and sustainable strategy to alleviate the current water crisis. However, the advancement of AWH continues to be limited by the sorbents’ low efficiency, scalability challenges, and poor cycling stability. This study reports the optimization of a relevant water adsorbent, AlPO-18, with successful scale-up trials. The optimized process facilitates sing-batch production of over a hundred grams of AlPO-18 in a 1 L reactor, resulting in lower costs, reduced energy consumption, and minimized environmental impact. Notably, the upscaling doesn’t compromise the material’s sorption properties or yield, which remains consistently high at 75 % relative humidity (RH). To address the issues caused by powdered materials in industrial applications, we further demonstrate a method to shape AlPO-18 by incorporating 20 % pseudo-boehmite as a binder. The final extrudate retains the parent material’s pore structure and water sorption properties. It exhibits a high water uptake of 0.33 g/g under 75 % RH, releasing approximately 80 % of the adsorbed water within 25 min at 90 °C. Stability tests further confirm that the extrudate sorbent kept structural and adsorption capacity integrity across multiple cycles, making them highly suitable for practical applications. The research findings unambiguously prove that AlPO-18 is relevant for industrial-scale production and nondestructive shaping. This study opens the way for designing safer, more efficient, cost-effective AWH systems.
{"title":"Upscale synthesis and shaping of AlPO-18 sorbent for efficient atmospheric water harvesting","authors":"Haonuan Zhao, Viktar Yasnou, Nikolay Nesterenko, Diogenes Honorato Piva, Louwanda Lakiss, Marie Lozier- Desmurs, Valentin Valtchev","doi":"10.1016/j.seppur.2025.132249","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.132249","url":null,"abstract":"Sorption-based atmospheric water harvesting (AWH) is regarded as an efficient and sustainable strategy to alleviate the current water crisis. However, the advancement of AWH continues to be limited by the sorbents’ low efficiency, scalability challenges, and poor cycling stability. This study reports the optimization of a relevant water adsorbent, AlPO-18, with successful scale-up trials. The optimized process facilitates sing-batch production of over a hundred grams of AlPO-18 in a 1 L reactor, resulting in lower costs, reduced energy consumption, and minimized environmental impact. Notably, the upscaling doesn’t compromise the material’s sorption properties or yield, which remains consistently high at 75 % relative humidity (RH). To address the issues caused by powdered materials in industrial applications, we further demonstrate a method to shape AlPO-18 by incorporating 20 % pseudo-boehmite as a binder. The final extrudate retains the parent material’s pore structure and water sorption properties. It exhibits a high water uptake of 0.33 g/g under 75 % RH, releasing approximately 80 % of the adsorbed water within 25 min at 90 °C. Stability tests further confirm that the extrudate sorbent kept structural and adsorption capacity integrity across multiple cycles, making them highly suitable for practical applications. The research findings unambiguously prove that AlPO-18 is relevant for industrial-scale production and nondestructive shaping. This study opens the way for designing safer, more efficient, cost-effective AWH systems.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"25 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143477377","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}
Pub Date : 2025-02-23DOI: 10.1016/j.seppur.2025.132214
Lei Li, Yanjie Liang, Yan Liu, Meijie Wei, Bin Wang, Dong Wang
Adsorption and activation are essential in heterogeneous reactions, particularly for toluene catalytic oxidation. Synergistically enhancing both processes to boost toluene oxidation activity remains a significant challenge. A facile MOFs sacrificial combined with an alkaline solution post-treatment modification strategy was implemented to prepare hierarchically structured MnOx nanosheets (MnOx-S) catalysts. Compared with the Mn2O3-H and MnO2-P catalysts, obtained by the direct pyrolysis of Mn-MOFs and Mn(NO3)2 precursors, the MnOx-S catalyst exhibits a noticeable improvement in catalytic activity for toluene oxidation. The T90 was reduced 26 °C and 64 °C, respectively. The reason is closely related to the porous nanosheet structure, possessing a highly accessible surface and high density of exposed active sites, thus facilitating the adsorption/activation of reactant molecules. Meanwhile, the strong redox ability in the MnOx-S catalyst boosted oxygen mobility and reactivity, resulting in a 12.4-fold catalytic reaction rate compared with MnO2-P. The accumulation and conversion of benzoates is the rate-limiting step in the toluene oxidation reaction occurring on three distinct catalyst surfaces. This critical step is notably expedited by especially hierarchical structures in MnOx-S catalysts. This work advances the investigation of MOF-related catalytic materials and provides a dual approach that simultaneously enhances both adsorption and reaction processes, facilitating the design of high-performance catalysts for VOCs degradation.
{"title":"Facile preparation of MnOx catalysts derived from MOFs for efficient toluene Oxidation: Synergistic enhancement of active site density and reactivity","authors":"Lei Li, Yanjie Liang, Yan Liu, Meijie Wei, Bin Wang, Dong Wang","doi":"10.1016/j.seppur.2025.132214","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.132214","url":null,"abstract":"Adsorption and activation are essential in heterogeneous reactions, particularly for toluene catalytic oxidation. Synergistically enhancing both processes to boost toluene oxidation activity remains a significant challenge. A facile MOFs sacrificial combined with an alkaline solution post-treatment modification strategy was implemented to prepare hierarchically structured MnO<em><sub>x</sub></em> nanosheets (MnO<em><sub>x</sub></em>-S) catalysts. Compared with the Mn<sub>2</sub>O<sub>3</sub>-H and MnO<sub>2</sub>-P catalysts, obtained by the direct pyrolysis of Mn-MOFs and Mn(NO<sub>3</sub>)<sub>2</sub> precursors, the MnO<em><sub>x</sub></em>-S catalyst exhibits a noticeable improvement in catalytic activity for toluene oxidation. The T<sub>90</sub> was reduced 26 °C and 64 °C, respectively. The reason is closely related to the porous nanosheet structure, possessing a highly accessible surface and high density of exposed active sites, thus facilitating the adsorption/activation of reactant molecules. Meanwhile, the strong redox ability in the MnO<em><sub>x</sub></em>-S catalyst boosted oxygen mobility and reactivity, resulting in a 12.4-fold catalytic reaction rate compared with MnO<sub>2</sub>-P. The accumulation and conversion of benzoates is the rate-limiting step in the toluene oxidation reaction occurring on three distinct catalyst surfaces. This critical step is notably expedited by especially hierarchical structures in MnO<em><sub>x</sub></em>-S catalysts. This work advances the investigation of MOF-related catalytic materials and provides a dual approach that simultaneously enhances both adsorption and reaction processes, facilitating the design of high-performance catalysts for VOCs degradation.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"65 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143477424","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}
Pub Date : 2025-02-23DOI: 10.1016/j.seppur.2025.132213
Ran Zhao, XiaoWen Yang, Qian Liu, HeXiang Zhao, Hong Zhan, FangYuan Chen, ZhuRui Shen
Fenton-like catalysis has emerged as a robust approach for the degradation of refractory pollutants in water treatment. Metal-Organic Frameworks (MOFs), characterized by their exceptional specific surface areas and intricate pore structures, offer abundant active sites that confer impressive Fenton-like catalytic capabilities. By strategically manipulating electron rearrangement, one can fine-tune the electronic structure and surface characteristics of MOFs, thereby enhancing their catalytic efficiency. Despite these advancements, a comprehensive overview of the role of electron rearrangement in influencing the Fenton-like catalytic performance of MOFs remains elusive. This article consolidates the current understanding of electron rearrangement in MOF-based Fenton-like catalysis. We begin by delineating the distinctive features of the electronic structures of MOFs and outlining the methods for their characterization. Following this, strategies aimed at boosting the Fenton-like catalytic performance of MOFs through electronic structure modifications are reviewed. Finally, the intricate relationship between electron rearrangement and Fenton-like reactions involving MOFs is elucidated, providing critical insights for the design of advanced MOFs architectures tailored for enhanced catalytic performance in environmental remediation.
{"title":"Advancements in electron Rearrangement-Enhanced fenton-like catalysis of Metal-Organic Frameworks for water treatment applications","authors":"Ran Zhao, XiaoWen Yang, Qian Liu, HeXiang Zhao, Hong Zhan, FangYuan Chen, ZhuRui Shen","doi":"10.1016/j.seppur.2025.132213","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.132213","url":null,"abstract":"Fenton-like catalysis has emerged as a robust approach for the degradation of refractory pollutants in water treatment. Metal-Organic Frameworks (MOFs), characterized by their exceptional specific surface areas and intricate pore structures, offer abundant active sites that confer impressive Fenton-like catalytic capabilities. By strategically manipulating electron rearrangement, one can fine-tune the electronic structure and surface characteristics of MOFs, thereby enhancing their catalytic efficiency. Despite these advancements, a comprehensive overview of the role of electron rearrangement in influencing the Fenton-like catalytic performance of MOFs remains elusive. This article consolidates the current understanding of electron rearrangement in MOF-based Fenton-like catalysis. We begin by delineating the distinctive features of the electronic structures of MOFs and outlining the methods for their characterization. Following this, strategies aimed at boosting the Fenton-like catalytic performance of MOFs through electronic structure modifications are reviewed. Finally, the intricate relationship between electron rearrangement and Fenton-like reactions involving MOFs is elucidated, providing critical insights for the design of advanced MOFs architectures tailored for enhanced catalytic performance in environmental remediation.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"128 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143477423","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}
High concentration of S2O32- in gold thiosulfate leaching solution caused serious obstacle for Au(S2O3)23– recovery because of the strongly competitive adsorption effect. To cope with this trouble, a novel recovery strategy of coupling electromigration and photocatalysis (CEP) by using MoS2 cathode electrode and activated carbon (AC) anode electrode pairs has been proposed in this work. Au(S2O3)23– recovery behavior and recovery mechanism by CEP were detailed investigated with specific voltage and indoor light irradiation. Under the condition with S2O32-/Au(S2O3)23– molar ratio of 2000:1, ∼98 % gold recovery performance achieved. In addition, modified MoS2 with defect introducing and oxygen incorporation (D,O-MoS2) could greatly enhance gold recovery performance because of more excellent photoelectric property for faster Au(S2O3)23– reduction. Besides, the influences of CEP parameters such as voltage, water flux and electrode pairs were systematically explored for better understanding of gold recovery behaviors. Confirming by characterization tests and COMSOL simulation, the movement of S2O32- was mainly controlled by electromigration to move towards anode and then stored in the electric double layer (EDL) of coated AC. Meanwhile, Au(S2O3)23– was impelled to diffuse towards cathode driven by its concentration gradient and then reduced to Au0 through photogenerated electrons from coated D,O-MoS2. Therefore, by means of distinct mass transfer behaviors, Au(S2O3)23– could separate from high concentrated S2O32- system, so that achieving satisfied recovery performance via excellent photocatalytic reduction effect from D,O-MoS2. These findings provided a new insight for enhancing Au(S2O3)23– recovery from gold thiosulfate leaching solution, which catered to the topic of green production of gold.
{"title":"Efficient Au(S2O3)23– recovery from S2O32- system through coupling electromigration and photocatalysis effect on defect introduced and oxygen incorporated MoS2","authors":"Chang Liu, Lin Li, Huan Zhang, Qinghan Wang, Yumeng Liang, Peng Chen, Shaoxian Song, Feifei Jia","doi":"10.1016/j.seppur.2025.132251","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.132251","url":null,"abstract":"High concentration of S<sub>2</sub>O<sub>3</sub><sup>2-</sup> in gold thiosulfate leaching solution caused serious obstacle for Au(S<sub>2</sub>O<sub>3</sub>)<sub>2</sub><sup>3–</sup> recovery because of the strongly competitive adsorption effect. To cope with this trouble, a novel recovery strategy of coupling electromigration and photocatalysis (CEP) by using MoS<sub>2</sub> cathode electrode and activated carbon (AC) anode electrode pairs has been proposed in this work. Au(S<sub>2</sub>O<sub>3</sub>)<sub>2</sub><sup>3–</sup> recovery behavior and recovery mechanism by CEP were detailed investigated with specific voltage and indoor light irradiation. Under the condition with S<sub>2</sub>O<sub>3</sub><sup>2-</sup>/Au(S<sub>2</sub>O<sub>3</sub>)<sub>2</sub><sup>3–</sup> molar ratio of 2000:1, ∼98 % gold recovery performance achieved. In addition, modified MoS<sub>2</sub> with defect introducing and oxygen incorporation (D,O-MoS<sub>2</sub>) could greatly enhance gold recovery performance because of more excellent photoelectric property for faster Au(S<sub>2</sub>O<sub>3</sub>)<sub>2</sub><sup>3–</sup> reduction. Besides, the influences of CEP parameters such as voltage, water flux and electrode pairs were systematically explored for better understanding of gold recovery behaviors. Confirming by characterization tests and COMSOL simulation, the movement of S<sub>2</sub>O<sub>3</sub><sup>2-</sup> was mainly controlled by electromigration to move towards anode and then stored in the electric double layer (EDL) of coated AC. Meanwhile, Au(S<sub>2</sub>O<sub>3</sub>)<sub>2</sub><sup>3–</sup> was impelled to diffuse towards cathode driven by its concentration gradient and then reduced to Au<sup>0</sup> through photogenerated electrons from coated D,O-MoS<sub>2</sub>. Therefore, by means of distinct mass transfer behaviors, Au(S<sub>2</sub>O<sub>3</sub>)<sub>2</sub><sup>3–</sup> could separate from high concentrated S<sub>2</sub>O<sub>3</sub><sup>2-</sup> system, so that achieving satisfied recovery performance via excellent photocatalytic reduction effect from D,O-MoS<sub>2</sub>. These findings provided a new insight for enhancing Au(S<sub>2</sub>O<sub>3</sub>)<sub>2</sub><sup>3–</sup> recovery from gold thiosulfate leaching solution, which catered to the topic of green production of gold.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"25 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143477714","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}
Pub Date : 2025-02-23DOI: 10.1016/j.seppur.2025.132253
Yanjing He, Shitong Zhang, Chongli Zhong
Efficient separation of helium (He) from hydrogen (H2) remains a significant challenge in membrane-based separation processes. In this study, we constructed a comprehensive database of fluorine-rich ionic liquid@anion-pillared metal–organic frameworks (IL@APMOFs) and performed high-throughput computational screening (HTCS) to identify promising IL@APMOF membranes for He/H2 separation. CatBoost was identified as the optimal machine learning (ML) algorithms, and using this model, we revealed that IL content (IL%) is the key factor governing the separation performance of these membranes. Based on this insight, we designed and optimized IL@APMOF membranes by fine-tuning the IL content. The results validated the ML-driven findings and demonstrated that this strategy produces IL@APMOF structures with significantly enhanced He/H2 separation efficiency. This work not only provides a rational design strategy for the development of IL@APMOF membranes but also underscores the critical role of IL modification in advancing the discovery of high-performance MOF-based membrane materials.
从氢（H2）中高效分离氦（He）仍然是膜分离过程中的一项重大挑战。在本研究中，我们构建了一个全面的富氟离子液体@阴离子柱状金属有机框架（IL@APMOFs）数据库，并进行了高通量计算筛选（HTCS），以确定有前途的用于氦/氢分离的 IL@APMOF 膜。CatBoost 被认为是最佳的机器学习（ML）算法，利用这一模型，我们发现 IL 含量（IL%）是影响这些膜分离性能的关键因素。基于这一认识，我们通过微调 IL 含量设计并优化了 IL@APMOF 膜。结果验证了 ML 驱动的发现，并证明这一策略产生的 IL@APMOF 结构可显著提高 He/H2 分离效率。这项工作不仅为开发IL@APMOF膜提供了合理的设计策略，还强调了IL改性在推动高性能MOF基膜材料发现中的关键作用。
{"title":"Unlocking the potential of ionic liquids in Anion-Pillared MOFs for enhanced He/H2 separation Performance: A combined computational screening and Machine learning study","authors":"Yanjing He, Shitong Zhang, Chongli Zhong","doi":"10.1016/j.seppur.2025.132253","DOIUrl":"https://doi.org/10.1016/j.seppur.2025.132253","url":null,"abstract":"Efficient separation of helium (He) from hydrogen (H<sub>2</sub>) remains a significant challenge in membrane-based separation processes. In this study, we constructed a comprehensive database of fluorine-rich ionic liquid@anion-pillared metal–organic frameworks (IL@APMOFs) and performed high-throughput computational screening (HTCS) to identify promising IL@APMOF membranes for He/H<sub>2</sub> separation. CatBoost was identified as the optimal machine learning (ML) algorithms, and using this model, we revealed that IL content (IL%) is the key factor governing the separation performance of these membranes. Based on this insight, we designed and optimized IL@APMOF membranes by fine-tuning the IL content. The results validated the ML-driven findings and demonstrated that this strategy produces IL@APMOF structures with significantly enhanced He/H<sub>2</sub> separation efficiency. This work not only provides a rational design strategy for the development of IL@APMOF membranes but also underscores the critical role of IL modification in advancing the discovery of high-performance MOF-based membrane materials.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"27 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143477421","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}
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