Article
Chemistry, Physical
Merymene Boukadida, Amira Anene, Najeh Jaoued-Grayaa, Yves Chevalier, Souhaira Hbaieb
Summary: The choice of functional monomer in molecularly imprinted polymers (MIPs) is crucial for designing selective recognition sites for adsorption. Studies using H-1 NMR spectroscopy revealed that the weakly acidic acrylamide (AA) showed stronger hydrogen-bonding interactions with histamine (HA) compared to methacrylic acid (MAA). Adsorption isotherms and modeling of MIPs demonstrated a higher selective binding of HA to AA-based MIPs.
COLLOID AND INTERFACE SCIENCE COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Mona Rouhi, Anil Incel, Sudhirkumar Shinde
Summary: This study presents a method for synthesizing a water-compatible oxyanion-imprinted neutral receptor and demonstrates its practical applications in solid-phase extraction and amino acid binding in aqueous media.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Maura Malinska
Summary: Calixarenes form complexes with guest molecules and molecular recognition can be affected by various factors. This study crystallized a host p-tert-butylcalix[6]arene with different guest molecules and characterized the obtained structures with X-ray diffraction. The results showed that most solvents formed 1:1 and/or 1:3 host-guest complexes. The fill percentage of the host cavity was similar for apolar guests but significantly lower for polar solvents. The most stable crystals were formed by 1:1 host-guest inclusion complexes.
Article
Engineering, Electrical & Electronic
Shreya Nag, Debangana Das, Runu Banerjee Roy
Summary: This study developed a molecularly imprinted polyacrylamide on a graphite substrate (MIPAM/GP) electrochemical sensor for the detection of vanillin (VNL) as a flavoring element. The synthesized material was characterized using scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, and UV-visible (UV-Vis) spectroscopy. The electrode showed a wide linearity range of 0.1-1000 μM and a limit of detection (LOD) of 1.43 nM, demonstrating excellent repeatability, reproducibility, and selectivity at low cost and long-term stability. The practical application of the MIPAM/GP electrode in different dessert extracts showed promising results compared to high-performance liquid chromatography (HPLC) analysis.
IEEE SENSORS JOURNAL
(2023)
Article
Chemistry, Applied
Yinghe Ji, Jing Zhao, Longshan Zhao
Summary: A magnetic molecularly imprinted polymer based on deep eutectic solvent was synthesized for specific identification and quantification of vanillin. The method showed excellent advantages in adsorption capacity and identification specificity for vanillin, with satisfactory analytical results produced by high-performance liquid chromatography. This method could be further applied to the specific separation and quantification of vanillin in infant complementary food.
Article
Electrochemistry
Jianlian Liu, Chaojun Du, Shengyun Wang, Zhaoyang Li
Summary: In this study, a vanillin imprinted blend membrane was successfully created using molecularly imprinted polymers (MIP) and membrane separation technology. The MIP-based electrochemical sensor showed highly sensitive detection of vanillin.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Michael Kemper, Deborah A. Drost, Elric Engelage, Christian Merten
Summary: This article investigates the strength and role of a special kind of hydrogen bond called dihydrogen bond (DHB) in the self-aggregation of amine-borane adducts. The study shows that the stereochemistry at the nitrogen significantly influences the interaction enthalpy, suggesting that N-chiral amine boranes can be used to fine-tune the formation dynamics of assemblies in supramolecular chemistry.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Shaomin Xue, Yujia Rong, Ning Ding, Chaofeng Zhao, Qi Sun, Shenghua Li, Siping Pang
Summary: This paper presents a simple strategy for simultaneous recognition and separation of organic isomers by controlling the intermolecular interactions inside and outside the pores. Experimental results demonstrate nearly 100% selectivity in mixtures containing trace amounts of 1-bromobutane, and the strategy can be used repeatedly without losing selectivity.
Article
Engineering, Chemical
Yunfei Zhang, Jianquan Ren, Zuoting Yang, Yiran Ma, Qiuyu Zhang, Baoliang Zhang
Summary: Increasing the external surface area of carriers is crucial for the production of protein-imprinted polymers. Magnetic composite microspheres with a wrinkled surface were fabricated and coated with polydopamine to create BSA surface-imprinted microspheres. The MWMS@MIPs showed high adsorption capacity for BSA and the ability to specifically differentiate BSA from mixed proteins and real samples, making them promising materials for protein separation.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Polymer Science
Guillaume Palaprat, Anne-Francoise Mingotaud, Dominique Langevin, Monique Mauzac, Jean-Daniel Marty
Summary: The study investigated a cholesteric network with two levels of chirality in gas phase towards the sorption properties of two enantiomers of a chiral amine, finding that both levels of chirality improved separation, with the presence of chiral-specific molecular cavities having a greater effect than the chiral environment.
Article
Chemistry, Multidisciplinary
Yasemin L. Mustafa, Hannah S. Leese
Summary: The development of sensitive and selective sensor materials, such as molecularly imprinted polymers (MIPs), for biomarker detection is important for self-health monitoring and management. In this study, a lactate MIP was developed with high sensitivity and selectivity using methacrylic acid and ethylene glycol dimethacrylate as the functional monomer and cross-linker, respectively. The MIP demonstrated a retention of up to 63.5% for the target analyte lactate, indicating its effectiveness in selective detection. Understanding the imprinting mechanism between the functional monomers and the target analyte enables the improvement of molecular imprinting for the development of artificial receptor sensor materials.
Article
Chemistry, Applied
Simone Cavalera, Matteo Chiarello, Fabio Di Nardo, Laura Anfossi, Claudio Baggiani
Summary: Solid-phase synthesis is a flexible approach for preparing nanoparticles with high affinity and fast binding rates in aqueous environment. Experimental conditions play a crucial role in determining the binding properties.
REACTIVE & FUNCTIONAL POLYMERS
(2021)
Article
Biochemistry & Molecular Biology
Boer Liu, Xi Chen, Glenn A. Spiering, Robert B. Moore, Timothy E. Long
Summary: This study investigates the influence of pendant hydrogen bonding strength and distribution on the self-assembly and thermomechanical properties of A-AB-A triblock copolymers. It demonstrates the effects of different hydrogen bonding characteristics on microphase-separated morphology, and confirms the microphase-separated structure through dynamic mechanical analysis. Additionally, the UCyA triblock copolymers show improved extensibility and toughness due to stronger hydrogen bonding associations compared to CyA analogs.
Review
Polymer Science
Jente Verjans, Richard Hoogenboom
Summary: Supramolecular polymer materials are physically crosslinked polymeric structures that exhibit stimuli-responsive behavior and healable properties due to noncovalent interactions. The incorporation of the quadruple hydrogen bonding unit UPy in polymeric precursors has led to the development of a wide range of hydrogen bonded materials with diverse applications. This review focuses on the design strategies to synthesize UPy-containing polymer materials and discusses their material properties.
PROGRESS IN POLYMER SCIENCE
(2023)
Article
Chemistry, Physical
Rafael M. Madero-Castro, Sofia Calero, A. Ozgur Yazaydin
Summary: Dehydration of bioalcohols is a major cost factor in biofuel production, and this study investigates the liquid phase separation of water from methanol and ethanol in a siliceous MFI pervaporation membrane. Molecular dynamic simulations show that hydrogen bonding between water and alcohol molecules may hinder complete alcohol selectivity, but suggest the potential for functionalizing membrane surfaces to overcome this issue and improve separation efficiency.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Engineering, Chemical
Yunfei Yu, Xue Yang, Chenchen Zhang, Jie Chen, Wei Lin, Jianqiang Meng
Summary: This study reports an environmentally friendly and simple approach for preparing double-network (DN) ion gel membranes with high strength and excellent gas separation performance. By optimizing crosslinking density, mass ratio, and the type and content of free ionic liquid, the mechanical and gas separation properties of the DN membrane are improved.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Si-qi Jiang, Qiang Gao, Xi-guang Li, Chao-zhu Deng, Jun Qiu, Xiang-nan Zhu
Summary: A dual-strengthening pretreatment method is proposed to remove PVDF more efficiently and enhance the leaching of LiCoO2. Experimental results show that dual-strengthening pretreatment can effectively remove PVDF and significantly improve the leaching efficiency compared to single pretreatment methods.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Zengchi Hu, Xiaoyu Wang, Xiaohui Zhang, Xue Li, Jiangbin Xia
Summary: The rapid fabrication of high-performance composite membranes based on CMPs using simple and low-cost methods is challenging. In this study, three CMPs-based composite membranes were rapidly fabricated with adjustable size using unidirectional diffusion synthesis. The microstructural design enhanced the rejection rates of the membranes and they showed strong hydrolytic resistance, thermal stability, and acid-base resistance. Electrostatic adsorption and the adjustable microstructures significantly varied the repellence of the membranes to different charged molecules.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Farzaneh Rouhani, Matineh Ayedi, Nasser Safari
Summary: Introducing defects into porous metal-organic frameworks is important for improving their adsorption performance. Quasi-MOFs, an underutilized variant of large-scale, fundamentally deficient MOFs, have been found to have substantial amounts of unsaturated metal sites to offset the drawbacks of MOFs. In this study, a quasi-MOF was produced using a water-stable MOF and demonstrated significantly improved phosphate adsorption capability due to the presence of defect sites.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Valentin Reungoat, Morad Chadni, Louis M. M. Mouterde, Fanny Brunissen, Florent Allais, Helene Ducatel, Irina Ioannou
Summary: This study focuses on the recovery of sinapic acid using liquid-liquid extraction assisted by a hollow fiber membrane contactor from an aqueous feed obtained through the hydrolysis of mustard bran. The screening of solvents of different chemical nature showed that all tested solvents had an extraction efficiency of more than 80% for pH < 5. Four solvents were selected for use in the hollow fiber membrane contactor, and the volatile solvents showed higher mass transfer coefficients compared to non-volatile solvents. The extraction efficiency was intensified by increasing the initial concentration of sinapic acid and the feed-to-solvent ratio. CPME was found to have optimal recovery efficiency at a phase ratio of 8:1, yielding 0.9 g of sinapic acid per liter of CPME used.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Takahiro Sakamoto, Takafumi Hanada, Hayate Sato, Mayu Kamisono, Masahiro Goto
Summary: The emergence of the battery society has led to a high demand for battery metals, resulting in a strain on their supply. This study introduces a novel technique using a hydrophobic deep eutectic solvent (DES) for leaching and recovering battery metals from low-grade nickel laterite ores. The DES enables selective leaching and recovery of the metals, offering a promising pathway for the extraction of critical battery metals.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Rongrong He, Jiarui Chen, Chunyao Zhang, Dan Lu, Lin Zhang, Tao He
Summary: Researcher has developed a method to quantify the charge density in nanofiltration (NF) membrane separation layer and applied it in NF membranes that can separate Mg2+ and Li+. The results showed that overcompensated amine groups played a major role, and there was a linear relationship between charge density and coating bi-layers or PAH layers.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Zhijian Zhang, Min Chen, Zhe Lin, Zhichao Yang, Yafeng Du, Zhihui Chen, Zhenhao Yang, Kongyin Zhao, Ligang Lin
Summary: Membrane technology plays an important role in molecular/ion separation processes, but faces challenges such as membrane fouling. This study introduces a new ion-crosslinking method to fabricate copper alginate hydrogel membranes with improved mechanical strength and antimicrobial capabilities. The membranes exhibit excellent separation performance and enhanced long-term molecule/ion separation through improved anti-swelling properties. Molecular dynamics simulations and life cycle analysis highlight the pore structure and environmental friendliness of the hydrogel membranes. These findings provide valuable insights for developing sustainable hydrogel membranes with stable performance and high separation efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Dongmei Liu, Aiying Guo, Yanling Qi, Zhixin Ji, Hongjuan Li, Zhiwei Zhang, Xinyue Zhang, Kunze Wu, Aijun Cai
Summary: In this study, a stable magnetic Mg/Mn-layered double oxide-doped biochar composite (MgMnLDO-MBC) was prepared and successfully used for the removal of antibiotics and bacteria from wastewater. The composite exhibited enhanced surface areas, adsorption sites, and free radicals, leading to improved catalytic activity. The effects of different factors on the removal efficiency were evaluated, and the composite showed good reusability.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Feng Wang, Zhaoyong Bian, Yaru Zhang, Wenchao Yu, Qiang Zhang, Hui Wang
Summary: In this study, a nanofibrous layered structure of Ff-Ti3C2Tx-Co3O4 was prepared by self-assembling nanofibrous Co3O4 with lamellar fluorine-free MXene (Ff-Ti3C2Tx). The Ff-Ti3C2Tx-Co3O4 exhibited excellent catalytic activity for degradation, resistant to ionic interference, and maintained high removal efficiency of sulfamethoxazole (SMX) in municipal wastewater. The rapid SMX degradation involved fast electron transfer in redox cycles with PMS and the generation of 1O2 via PMS ->center dot O2 -> 1O2. This work provides new insights into antibiotic degradation mechanisms and electron transfer based on PMS activation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Weipeng He, Jiacheng Luo, Yujie Wu, Tianhao Luo, Chen Tang
Summary: This study comparatively evaluated the role of cationic, anionic, and nonionic polyacrylamides (PAMs) in ballasted flocculation of clay suspensions under different aluminum sulfate (AS) coagulant dosages. The selection of PAMs and AS dosage had a significant influence on the size and shear resistance of ballasted floc aggregates.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Lixian Wang, Lizhi Zhao, Didi Si, Zhixin Li, Huiqin An, Hui Ye, Qingping Xin, Hong Li, Yuzhong Zhang
Summary: Metalloporphyrin-based nanozymes integrated with poly (vinylidene fluoride) membrane show high catalytic activity and reusability for the decolorization of Congo Red dye in continuous flow process.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Yongfei Ma, Chenyu Zeng, Yongzhen Ding, Jiayi Tang, Ondrej Masek, Zhikang Deng, Rui Mu, Zulin Zhang
Summary: In this study, sludge-derived biochar (SBC) was functionalized with various iron salts to enhance its adsorption ability for sulfamethoxazole (SMX) and magnetic collection performance. Ball milling was further employed to treat the optimal iron salt functionalized SBC (MSBC), resulting in ball milled SBC (BMSBC) with improved adsorption performance for SMX. The dominant driving mechanism for SMX adsorption onto BMSBC was confirmed to be multiple physicochemical forces, including 7C-7C conjugation, pore filling, H-bonding, Fe-O complexation, and electrostatic interactions. BMSBC exhibited favorable adsorption ability for SMX in actual waters and could be easily collected within 1 min due to its magnetic sensitivity.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Jinglin Tan, Xiaohui Mao, Wenjihao Hu, Hongbo Zeng
Summary: This study investigates the influence of PDMS chain architectures on surface properties and reveals that PDMS coatings with looped structures exhibit superior hydrophobicity, self-cleaning, and water sliding compared to coatings with linear structures. Additionally, both looped and linear PDMS coated stainless steel mesh/polyester fibers show efficient separation of oil/water mixture.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Chemical
Wei-Liang Chen, Chih-Chia Cheng, Chien-Hsing Lu, Jem-Kun Chen
Summary: This study designs a novel sandwich-structured capacitor that reduces the absorption time of pollutants using dielectrophoresis force. By coating graphene oxide on polystyrene microspheres as adsorbents and encapsulating them within the capacitor, the adsorption rate is significantly enhanced. Additionally, frequency manipulation allows for the recycling of adsorbents and concentration of dyes, minimizing secondary pollution.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)