Article
Materials Science, Multidisciplinary
Haote Liu, Lin Cao, Xiao Wang, Congjie Xu, Haoling Huo, Bixia Jiang, Hong Yuan, Zhidan Lin, Peng Zhang
Summary: The study aims to enhance the feasibility of early diagnosis of Parkinsonism by preparing CGTX-IX composite hydrogels. These hydrogels show good mechanical properties, electrical conductivity, and adhesion, and can effectively detect human movements and actions.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Alexandra S. M. Wittmar, Daniel Baumert, Mathias Ulbricht
Summary: This study analyzes the possibility of preparing cellulose-based porous spherical adsorbers directly from cotton using an ionic liquid-based platform, comparing the dissolution difficulty and adsorption capacity towards Cu2+ between microcrystalline cellulose (MCC) and cotton in different solvent solutions.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Kecheng Jie, Yujuan Zhou, Hugh P. Ryan, Sheng Dai, Jonathan R. Nitschke
Summary: This article discusses the concept of porous liquids and their potential applications in the chemical industry, focusing on early reports of successful construction of porous liquids based on existing porous scaffolds. It pays particular attention to design strategies and structure-property relationships.
ADVANCED MATERIALS
(2021)
Article
Biochemistry & Molecular Biology
Ahmed Salama
Summary: The synthesis and characterization of a novel cellulose derivative as a sustainable adsorbent for cationic and anionic dyes are described. The cellulose derivative demonstrated efficient adsorption for methylene blue and methyl orange removal.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Engineering, Chemical
Rifan Hardian, Abdulaziz Alammar, Tibor Holtzl, Gyorgy Szekely
Summary: Membrane technologies have shown promise as an energy-efficient alternative for separation processes in various industries. This study focuses on the fabrication of oil and solvent-resistant nanofiltration membranes using cellulose and chitosan blends. The membranes exhibited outstanding separation performance and chemical stability, even in harsh solvents. By adjusting the cellulose-chitosan ratio, the molecular sieving properties of the membranes could be fine-tuned. The membranes also showed biodegradation potential, contributing to the sustainable lifecycle of membranes.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Chemistry, Physical
Xiaohua Jing, Zhumei Sun, Dandan Zhao, Xiaoning Tang, Wenjing Lv, Yunfeng Shi
Summary: In this study, novel ionic liquids were synthesized and their single-stage extraction performance and multi-stage cross flow extraction performance for metal ion separation were investigated. Among them, [C4H9NH3][Cyanex 272] showed good selective extraction and separation, and can be used for the recovery of Mn2+, Co2+, and Ni2+ from spent ternary lithium batteries.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Syane A. Satyawirawan, Robert W. Cattrall, Spas D. Kolev, Ines G. S. Almeida
Summary: This study investigated the solvent extraction of Co(II) from aqueous solutions using the ionic liquids [P66614][C272] and [P66614][SCN]. The results showed that the cation of the ionic liquids participated in the formation of ion-pairs in the organic phase, maintaining electroneutrality. The Co(II) coordination sphere geometry was tetrahedral, and the stoichiometric mole ratios between the ionic liquids and Co(II) were determined. The extraction of Co(II) was enhanced when the aqueous phase contained an anion with high lipophilicity.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Polymer Science
Yaohui Cheng, Xin Zhang, Chunchun Yin, Jinming Zhang, Jian Yu, Jun Zhang
Summary: The study introduces new cellulose esters containing imidazolium cation for enhanced CO2 gas separation. These materials effectively improve the CO2 permeability of cellulose ester/ILs composite membranes, showing good mechanical properties and thermal stability.
MACROMOLECULAR RAPID COMMUNICATIONS
(2021)
Article
Chemistry, Analytical
Takaaki Tatsumi, Yoshiro Tahara, Michiaki Matsumoto
Summary: The study prepared adsorbents consisting of chitosan modified with amidoxime groups and cellulose with the use of an ionic liquid, leading to improved metal adsorptivity and gel stability. The adsorption characteristics of these amidoxime-chitosan/cellulose hydrogels showed high physical stability and selectivity towards copper ions when compared to other metals. The results suggest that these environmentally benign adsorbents have promising potential for metal ion recovery in aqueous media.
Article
Chemistry, Physical
Jinli Qin, Zhaolu Wang, Jie Hu, Yuan Yuan, Ping Liu, Li Cheng, Zhengqing Kong, Ke Liu, Shouke Yan, Jianming Zhang
Summary: The study investigates the impact of ionic liquids (IL) on the liquid crystal self-assembly behavior of cellulose nanocrystals (CNCs). Results demonstrate that CNCs modified with positively charged IL (CNC-IL) can form chiral nematic structures at lower concentrations, showing distinct assembly behavior compared to original CNCs.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Engineering, Environmental
Wentao Wang, Zhen Liu, Ruyi Wang, Meiwen Cao, Yan Chen, Xingjie Lu, Hongchao Ma, Tongtao Yue, Taihong Yan
Summary: A temperature-responsive phase separation system based on PNIPAM and GO has been developed for efficient removal of metal ions from polluted water. GO sheets can be transferred to the gel phase and adsorb metal ions efficiently due to their interactions with PNIPAM molecules. The gel phase can then be separated from the water phase, achieving easy removal of the pollutant metal ions. This method has high versatility, easy treatment and separation, and good reusability, making it highly potential for practical industry applications in metal ion pollution treatment.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Yu Deng, Yigang Ding, Zhong Huang, Ying Yu, Jun He, Yi Zhang
Summary: Two novel carboxylic acid based ionic liquids were synthesized and studied for the extraction of yttrium (Y(III)) and mixed rare earth elements (REEs). One IL showed higher extraction efficiency for Y(III) while the other demonstrated better selective separation behavior for mixed REEs, avoiding saponification procedures and resulting wastewater.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Engineering, Environmental
Tianhao Yu, Qiong Cai, Guoping Lian, Yinge Bai, Xiaochun Zhang, Xiangping Zhang, Lei Liu, Suojiang Zhang
Summary: The study of using ionic liquids encapsulated metal-organic frameworks ZIF-8 for CO2/CH4 separation mechanisms revealed that the original aperture configuration achieved the best separation performance, and the addition of ILs prevented large swing of the apertures. Furthermore, the effect of IL viscosity on the aperture configuration was investigated, showing that higher IL viscosity stabilized the original aperture configuration.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Yilong Li, Zhiyong Li, Ruipeng Li, Huiyong Wang, Yang Zhao, Yuanchao Pei, Jianji Wang
Summary: The development and utilization of nuclear energy is an effective way to reduce carbon emissions and achieve global carbon neutrality. However, the release of radioactive pollutants, such as I3-, during the utilization of nuclear energy poses a challenge, and efficient adsorption and storage of iodide ions are needed.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Xiaoqian Li, Dechao Wang, Zhongjie He, Fangfang Su, Jing Zhang, Yudeng Wang, Yangyang Xin, Hongni Wang, Dongdong Yao, Mingtao Li, Yaping Zheng
Summary: This study demonstrates a generalizable strategy to construct stimuli-responsive porous ionic liquids by self-assembling responsive ionic liquid crystals and metal-organic frameworks. The resulting porous ionic liquids exhibit rapid reversible transition behaviors and increased adsorption capacity for CO2 and C2H4. The stimuli-responsiveness of the porous ionic liquids can be demonstrated through changes in their phase, porosity, gas adsorption, and separation.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Polymer Science
Alexandra S. M. Wittmar, Marcus Ropertz, Michael Braun, Ulrich Hagemann, Corina Andronescu, Mathias Ulbricht
Summary: Carbon-based electrocatalysts for oxygen reduction reaction (ORR) are prepared using a two-step thermal treatment process. The nitrogen content in the catalyst can be increased by blending cellulose with chitosan. The optimized thermal treatment and pyrolysis conditions result in a catalyst with high ORR activity.
Article
Engineering, Chemical
Qirong Ke, Mathias Ulbricht
Summary: This study focuses on the in situ modification of commercial polyethersulfone (PES) microfiltration membranes to efficiently remove boron in seawater desalination. By coating the pore surface with a boron affinity polymer-based hydrogel, the modified membranes showed superior adsorber properties. The trade-off between permeance and boron binding capacity was studied to identify promising materials for competitive overall separation performance.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Environmental
Yan Wang, Baiwen Ma, Mathias Ulbricht, Yingchao Dong, Xu Zhao
Summary: This review provides a comprehensive overview of alumina membranes, including recent developments, strategies for lowering cost and improving performance, and future research prospects. The review also highlights emerging methods and engineering applications.
Article
Polymer Science
Haniyeh Najafvand Drikvand, Mitra Golgoli, Masoumeh Zargar, Mathias Ulbricht, Siamak Nejati, Yaghoub Mansourpanah
Summary: Poly(N-isopropylacrylamide) (PNIPAAm) was introduced into a polyethylene terephthalate (PET) nonwoven fabric to develop a novel support for polyamide (PA) thin-film composite (TFC) membranes without a microporous support layer. By adjusting the pore size of the nonwoven fabric using PNIPAAm hydrogel, a hydrophilic support was created. PA TFC membranes were fabricated on the PET-based support through interfacial polymerization. The resulting membrane exhibited good separation performance and temperature-responsive behavior.
Article
Chemistry, Multidisciplinary
Md. Akhtarul Islam, Mathias Ulbricht
Summary: This study applies the Hagen-Poiseuille equation to experimental flow data of various gases through capillaries and porous media. By treating gas viscosity as an adjustable parameter, the study finds an unambiguous relationship between gas viscosity, average pressure, and capillary diameter at a constant temperature. Additionally, a universal linear relation exists for different gases between the parameter Pav*D and μ/M-0.5 (where M is molecular mass) when Pav*D < 0.01. This new interpretation of gas viscosity avoids the differentiation of flow regimes and has potential applications in fields such as microfluidic systems and pore size analysis of filters and membranes.
Article
Biochemistry & Molecular Biology
Philipp Jahn, Michael Zelner, Viatcheslav Freger, Mathias Ulbricht
Summary: The standard treatment for wastewater is unable to remove salinity or certain organic micropollutants. Membrane processes, especially nanofiltration (NF), may be a promising solution. However, current NF membranes reject multivalent ions due to the dielectric effect. This study presents a new method that combines two polyelectrolytes with opposite charge to prepare NF membranes with adjustable selectivity and improved performance compared to existing membranes.
Article
Engineering, Environmental
Lukas Fischer, Anna Volz, Ulrich Hagemann, Mathias Ulbricht
Summary: A polymer-based membrane platform was used to immobilize nickel nanoparticles and enhance the catalytic activity for the reduction of p-nitrophenol. The optimized membrane fabrication method resulted in high loading of nickel nanoparticles, carbon nanoparticles, and cationic ionomer, as well as high porosity. The addition of carbon and ionomer improved the nickel microenvironment in the membranes and doubled the catalytic frequency of p-nitrophenol reduction. The multi-composite membranes exhibited exceptional stability and enabled continuous wastewater treatment at high p-nitrophenol concentrations.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Baiwen Ma, Mathias Ulbricht, Chengzhi Hu, Hongwei Fan, Xu Wang, Yi-Rong Pan, Seyed Saeid Hosseini, Stefan Panglisch, Bart Van der Bruggen, Zhiwei Wang
Summary: Membrane science and technology is rapidly growing worldwide, offering high separation efficiency with low energy consumption. While most research focuses on membrane fabrication and modification to enhance properties and performance, less attention has been given to membrane life cycle management, particularly at the end of service. This study highlights the importance of life cycle assessment (LCA) and specifically discusses membrane recycling to achieve green development and sustainability goals.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Review
Polymer Science
Amir Hossein Mostafavi, Ajay Kumar Mishra, Fausto Gallucci, Jong Hak Kim, Mathias Ulbricht, Anna Maria Coclite, Seyed Saeid Hosseini
Summary: This review introduces various promising chemical and physical surface modification techniques for tailoring the characteristics of thin films and membranes. It focuses on the application of chemical vapor deposition (CVD) techniques and discusses the impact of process parameters on the quality and properties of deposition. The review highlights the significance of CVD-based membranes and thin films for industrial applications.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Engineering, Chemical
Lukas Fischer, Sven Soren Hartmann, Artjom Maljusch, Christian Daeschlein, Oleg Prymak, Mathias Ulbricht
Summary: We fabricated dense anion-exchange membranes and rationally controlled the nanostructure by designing fabrication conditions and adding ionic liquid. We optimized the macroscopic properties and ion transport rates by tailoring the solidified membranes through heat or solvent annealing.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Duc Hoa Tran, Mathias Ulbricht
Summary: Research and development towards sustainable chemistry involves the development of new materials and exploration of new fabrication methods. In this study, composite membranes made from biodegradable cellulose were fabricated using a simple and scalable process. The use of dimethylsulfoxide as impregnation liquid improved the membrane separation performance and lamination strength. The thickness of the barrier layer could be reduced to a few micrometers, and the membrane performance could be adjusted by varying the cellulose concentration and co-solvent fraction. The cellulose-cellulose composite membranes showed potential as a sustainable alternative material for various separations.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Zhijun Ren, Siyang Wang, Qiuwen Wang, Longyi Lv, Dongyu Xu, Yilin Dong, Jinlong Han, Mathias Ulbricht, Li Sun, Xiaoyang Liu
Summary: Moderate KMnO4/Fe(II) pre-oxidation is a promising technique to alleviate membrane fouling and minimize environmental risks caused by the breakage of algae cells. This study investigates the performances of various components and their influences on fouling characteristics.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Siqi Wu, Baiwen Ma, Chengzhi Hu, Xin Hua, Hongwei Fan, Mathias Ulbricht, Jiuhui Qu
Summary: Coagulation pretreatment can improve the efficiency of membrane filtration. By regulating the 3D structure of the cake layer and the water channel characteristics, the optimization of membrane filtration can be achieved.
Article
Nanoscience & Nanotechnology
Lukas Fischer, S. Amir H. Hesaraki, Anna Volz, Mathias Ulbricht
Summary: Porous nanocomposite membranes decorated with high loadings of nickel nanoparticles were successfully fabricated using chelating additives. These additives reduced nickel agglomeration and promoted particle presentation on the membrane surface, resulting in increased water permeance and porosity compared to membranes without additives. Incorporating the hydrophobic additive Fumion allowed for tuning of membrane hydrophobicity. The same nickel nanoparticles showed improved H-2 generation rate and higher p-NP turnover frequencies when presented in membranes with higher water contact angles and additive-directed particle presentation.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Alexandra S. M. Wittmar, Thaarmikaa Vigneswaran, Nikola Rankovic, Ulrich Hagemann, Nils Hartmann, Ricardo Martinez-Hincapie, Viktor Colic, Mathias Ulbricht
Summary: Nitrogen-containing porous carbons with suitable structures and nitrogen content were prepared by pyrolysis of chitosan-coffee blends under nitrogen atmosphere and using KOH for surface activation. The fraction of chitosan in the precursor influenced the porous structure and electrochemical activity of the carbon materials. Nitrogen species derived from chitosan play an important role, with catalysts having higher pyridinic nitrogen content showing the highest faradaic efficiency. The synthesized materials showed comparable performance to commercially available carbons obtained from less renewable precursors.
