Article
Engineering, Chemical
Qingbo Huang, Song Liu, Yanan Guo, Gongping Liu, Wanqin Jin
Summary: In this study, a graphene oxide (GO) membrane with charged interlayer channels was developed for the separation of mono-/di-valent ions. The membrane achieved selective transport of monovalent ions by utilizing size-sieving and electrostatic repulsion. The introduction of polyethyleneimine (PEI) into the interlayer channels not only controlled the charge property but also increased the hydrophilicity of the membrane surface. The optimal GO-PEI membrane exhibited high permeation rates and selectivity for monovalent ions.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Jingxian Zheng, Rui Wang, Qisheng Ye, Baoliang Chen, Xiaoying Zhu
Summary: The study utilized UV irradiation to precisely regulate and stabilize the interlayer spacing of nanofiltration MGM, allowing for sub-nanometer scale control of pore size. The application of the probability density function model enabled estimation of actual pore size, while UV reduction significantly enhanced the stability of MGM.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Solmaz Valizadeh, Leila Naji, Mohammad Karimi
Summary: In this study, amino acid crosslinked graphene oxide (GO) membranes were prepared and effectively used for the removal of Penicillin-G procaine (PG-P) from water. The membranes exhibited high water permeability and excellent rejection of PG-P due to the use of beta-Alanine (beta A) as a biocompatible heterobifunctional crosslinker in the modification of GO nanosheets.β A-modified GO membranes showed higher separation performance and better antifouling properties compared to unmodified GO membranes.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Physical
Zhonghua Liu, Famin Yu, Rui Wang, Wanrong Huang, Rui-Qin Zhang, Yan Xue, Zhigang Wang
Summary: Due to the limited variety of natural atoms and the preparation of nanoparticles with low size polydispersity, it is still a challenge to adjust the interesting properties of graphene at the atomic level by changing its interlayer spacing. However, this study demonstrates that superatoms can provide adjustable and stable intercalation units between graphene layers, allowing effective control of the interlayer distance. This suggests that superatoms have significant potential in membrane separation applications.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Chao Xing, Chang-Yu Liu, Chao Lai, Shan-Qing Zhang
Summary: This study focused on tuning the interlayer spacing of a graphene oxide (GO) membrane using poly-ethyleneimine (PEI) and developing a robust composite nanofiltration membrane. The PEI/GO@PAN membrane exhibited excellent rejection performance and high flux, making it a promising candidate for dye/salt separation applications.
Article
Chemistry, Physical
Zhen Lin, Yiqiang Ma, Chuan Hu, Qiugen Zhang
Summary: This study demonstrates a versatile strategy for controlling the interlayer spacing of graphene oxide nanosheets. The prepared chitosan-intercalated nanosheets show high permeability, stability, and anti-fouling ability, indicating great potential for molecular sieving applications.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Engineering, Chemical
Keizo Nakagawa, Shintaro Araya, Kai Ushio, Misato Kunimatsu, Tomohisa Yoshioka, Takuji Shintani, Eiji Kamio, Kuo-Lun Tung, Hideto Matsuyama
Summary: Two-dimensional (2D) laminar membranes are being studied for organic solvent nanofiltration, but controlling interlayer spacing and stable solvent permeation remain challenges. In this study, GO membranes with TEOA crosslinker were found to effectively suppress swelling and the affinity between TEOA and solvents correlated with interlayer spacing, indicating the importance of crosslinker-solvent affinity in controlling membrane performance.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Jinglei Liu, Wenbo Yuan, Caifeng Li, Mengmeng Cheng, Yan Su, Lijian Xu, Tianfei Chu, Shifeng Hou
Summary: A novel chiral separation membrane was successfully fabricated by assembling L-cysteine-modified graphene oxide sheets, showing high solvent permeability and separation performance. The membrane demonstrated good separation of racemates including alanine, threonine, and tyrosine in experiments, indicating its practical value in enantiomer separation.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Dang Du Nguyen, Yonas Tsegaye Megra, TaeGyeong Lim, Ji Won Suk
Summary: Free-standing graphene-based paper-like materials are of interest due to their tunable properties and unique structures. Understanding the interactions between graphene sheets is crucial for their applications. In this study, we characterize the interlayer cohesion energies in graphene papers through mechanical separation and chemical reduction. The interlayer cohesion energy is correlated with the oxygen content, interlayer spacing, and electrical conductivity of the graphene papers, providing insight into the potential tunability of interlayer interactions.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Chemical
Wei Zhang, Qingbo Huang, Song Liu, Mengchen Zhang, Gongping Liu, Zhenliang Ma, Wanqin Jin
Summary: This study presents a new approach to separate mono-/di-valent ions using a designed graphene oxide (GO) membrane with a polyelectrolyte coating. By tuning the surface charge and interlayer channels of the GO laminate, the membrane exhibited excellent separation performance for various ion pairs. The study also provided a mathematical model to understand the ion transport mechanism.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Hilal Ahmad, Fohad Mabood Husain, Rais Ahmad Khan
Summary: A graphene oxide lamellar membrane with increased inter-layer spacing was developed for efficient permeation of water molecules and heavy metal ions. The membrane demonstrated enhanced sensitivity and permeability due to larger inter-layer spacing and high surface area. The technique showed potential for preconcentration and extraction of Pb(ii), Cd(ii) and Cu(ii) ions with a low detection limit and good precision.
Article
Environmental Sciences
Ye Yang, Yuzhu Sun, Xingfu Song, Jianguo Yu
Summary: This study successfully separated and recovered sodium chloride from SWRO brine using monovalent selective electrodialysis technology, effectively avoiding direct discharge of the brine and achieving brine valorization. The research also examined the effects of current density and temperature on membrane performance, yielding significant results.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Chemical
Peishan Li, Long Jiang, Lingfeng Liu, Pengxiang Zhao, Gaoyi Xie, Xiaolong Xu, Changyu Liu, Jianbo Jia, Mingchao Liu, Mengchen Zhang
Summary: This paper proposes a strategy to stabilize graphene oxide membranes using chelation-based metal cation immobilization. By firmly immobilizing metal cations and decorating with hydrophilic groups, the membranes exhibit superior sieving performance for mono/divalent ions.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Yinxiang Xu, Zhufeng Hu, Zhongbin Liu, Huajian Zhu, Yishu Yan, Junbo Xu, Chao Yang
Summary: The study investigates the performance of graphene slits with different interlayer spacings for C4H6/C4H10 separation via molecular simulations. Results show that the size sieving effect leads to preferential penetration of C4H6 in narrower interlayer spacings, while pi-pi adsorption interaction and diffusivity play a role in wider interlayer spacings. Fine-tuning the interlayer spacing switches the dominant separation mechanism, achieving controllable regulation of the preferential permeation from C4H6 to C4H10.
ACS APPLIED NANO MATERIALS
(2021)
Article
Engineering, Chemical
Farooque Ahmed Janjhi, Imamdin Chandio, Ayaz Ali Memon, Zubair Ahmed, Khalid Hussain Thebo, Azhar Ali Ayaz Pirzado, Ayaz Ali Hakro, Muzaffar Iqbal
Summary: This study prepared GO-based lamellar membranes from GO and ginger plant extractive (GE) with various thicknesses, showing excellent separation efficiency and ultrafast permeability for organic dyes, as well as high water permeance. The membranes also exhibited good separation efficiency in organic solvent, highlighting the great potential of GO/GE lamellar membranes in water purification, desalination, and other nanofiltration applications.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Yimin Zhao, Quan Zhang, Yunzhang Li, Liang Chen, Ruobing Yi, Bingquan Peng, Dexi Nie, Lihao Zhang, Guosheng Shi, Shengli Zhang, Lei Zhang
Summary: The discovery of special matter phases in low-dimensional systems and on specific substrates provides insights into fundamental mechanisms of nature. In this study, the authors used cryo-electron microscopy to directly observe and characterize the prevalent and stable graphitic-like alkali halide hexagonal phases. These phases were spontaneously formed in a quasi-2D confined space between reduced graphene oxide layers under ambient conditions. The findings highlight the effects of the substrate and confined space on the formation of specific matter phases.
Article
Materials Science, Multidisciplinary
Shilun Li, Hongliang Zhang, Tianle Wang, Jing Xu, Junlang Chen, Liang Chen, Guoquan Zhou, Wei Liu, Zhigang Li, Zhichao Ruan, Shangshen Feng
Summary: This study synthesized a series of FeGa micro-nano spherical shell arrays using micro-nano optical technology, and achieved efficient and reversible control of the intensities and positions of light peaks in the optical absorption spectra by adjusting an external magnetic field, providing a method to control light absorption.
Article
Engineering, Chemical
Shuai Wang, Shanshan Liang, Liang Chen, Haiping Fang
Summary: Graphene-based membranes have gained attention in desalination and water treatment due to their unique physical and chemical characteristics. However, the permeability-selectivity trade-off of graphene oxide membranes has limited their real-world applications. This study demonstrates the feasibility of small-flakes reduced graphene oxide membranes for nanofiltration, achieving higher water permeance and maintaining high rejection rates. The research sheds light on improving the performance and stability of graphene oxide-based membranes.
Article
Chemistry, Physical
Juan Yang, Pei Li, Zailing Song, Jie Li, Huan Yang, Fan Yan, Lu Li, Can Xu, Junlang Chen, Liang Chen
Summary: In this study, graphene quantum dots (GQDs) modified by scandium ions (Sc3+) were prepared to improve their photoluminescence (PL) properties in aqueous solution containing heavy metal ions. It was found that GQDs modified by other metal ions, such as aluminum (Al3+) and gallium (Ga3+), also exhibited similar results, confirming the universality of this approach.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Chemical
Junfan Liu, Shuai Wang, Rujie Yang, Lu Li, Shanshan Liang, Liang Chen
Summary: In this study, a nacre-like structure membrane based on graphene oxide (GO) cross-linked by amino acid was fabricated. The membrane exhibited high water permeance and metal ions rejection, and showed stable separation performance for a long time.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Multidisciplinary Sciences
Yimin Zhao, Quan Zhang, Jianbing Ma, Ruobing Yi, Lu Gou, Dexi Nie, Xiaona Han, Lihao Zhang, Yuetian Wang, Xintong Xu, Zhe Wang, Liang Chen, Ying Lu, Shengli Zhang, Lei Zhang
Summary: By integrating high-temperature oxidation and pure-water incubation processes, Cu2O monocrystals with specific crystal planes and good conductivity were successfully synthesized on graphene oxide membranes. The assembly is attributed to the aggregation and attachment of Cu and O in the aqueous environment, as well as the cation-pi interactions between Cu2O and graphene oxide.
Article
Materials Science, Multidisciplinary
Songwei Zeng, Qiubo Pan, Zhijing Huang, Chenjie Gu, Tao Wang, Jinhui Xu, Zihan Yan, Feiyu Zhao, Pei Li, Yusong Tu, Yan Fan, Liang Chen
Summary: This research presents a self-powered humidity sensor with ultrafast response time and high selectivity to environmental stimuli. The sensor can be used in areas such as respiration monitoring, smart leaf surface humidity sensing, and energy harvesting.
MATERIALS & DESIGN
(2023)
Article
Multidisciplinary Sciences
Xinming Xia, Feng Zhou, Jing Xu, Zhongteng Wang, Jian Lan, Yan Fan, Zhikun Wang, Wei Liu, Junlang Chen, Shangshen Feng, Yusong Tu, Yizhou Yang, Liang Chen, Haiping Fang
Summary: By adding low amounts of aluminum ions, rapid and efficient desorption of ions on magnetite-graphene oxide can be achieved. This method has lower consumption of reagents and higher desorption rate compared to conventional methods, and can be applied for ion enrichment in various fields.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Yunzhang Li, Yimin Zhao, Xing Liu, Yinwei Qiu, Zhenglin He, Shengli Zhang, Haiping Fang, Liang Chen, Lei Zhang, Guosheng Shi
Summary: This study utilizes cryo-electron microscopy and X-ray photoelectron spectroscopy to discover a novel 2D Li2Cl crystal with metallic properties. A high content of Li2Cl is prepared in reduced graphene oxide (rGO) membranes through vacuum filtration, exhibiting high areal capacitance. Furthermore, the Li2Cl-rGO membranes also exhibit heterostructure property and piezoelectricity, making them useful as humidity sensors. These findings open up possibilities for fabricating novel high-performance electronic devices, transistors, and sensors.
ADVANCED MATERIALS INTERFACES
(2023)
Article
Chemistry, Physical
Shuai Wang, Liuyuan Zhu, Rujie Yang, Minliang Li, Fangfang Dai, Shiqi Sheng, Liang Chen, Shanshan Liang
Summary: In this study, a GO-PEI membrane with positively charged channels was constructed, demonstrating high selectivity and competitive Li+/Mg2+ separation performance. The membrane also showed excellent stability during the separation process. This work deepens the understanding of membrane ion selectivity and proposes a strategy for designing two-dimensional membrane structures from microscopic materials.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Nanoscience & Nanotechnology
Ruobing Yi, Yimin Zhao, Liang Chen, Lei Zhang
Summary: In this research, a two-dimensional nanofluidic gradient structure (TNGS) inspired by cell membrane potential was developed. By utilizing the built-in hygroscopic gradient and redox reaction, the selective migration of calcium ions and protons was converted into electrical energy, resulting in a solid-state power source with sustained voltage output and high volumetric power density.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xinming Xia, Yingying Huang, Bingquan Peng, Tao Wang, Ruobing Yi, Yimin Zhao, Jie Jiang, Fangfang Dai, Yan Fan, Pei Li, Yusong Tu, Lei Zhang, Haiping Fang, Liang Chen
Summary: A high-yield synthesis method for 2D abnormal crystals with unconventional stoichiometries is reported, and the unique electronic, magnetic, and optical properties of these crystals are demonstrated. By applying a negative potential, a more than tenfold increase in abnormal Na2Cl crystals with higher sodium content is achieved in rGOM. The crystals exhibit a square structure and piezoelectric behavior.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Wei Liu, Yunhao Xie, Zan Tong, Jingchao Sun, Liang Chen, Jing Xu
Summary: Electrochemical reduction of CO2 to valuable multi-carbon products is a potential solution to environmental and energy crises. In this study, N-heterocyclic carbenes (NHCs) incorporated into a graphene lattice were found to effectively activate CO molecules and convert them into CH3OH, C2H4, and C2H5OH with low limiting potentials. The catalytic performance of these NHCs is attributed to charge transfer and strong hybridization between NHCs and CO molecules, resulting in high activity and selectivity for the conversion of CO to valuable C2-products.
JOURNAL OF CO2 UTILIZATION
(2023)
Article
Chemistry, Physical
Wei Liu, Jingchao Sun, Yunhao Xie, Liang Chen, Jing Xu
Summary: Introducing two classes of typical five-membered carbenes to a graphene lattice creates novel 2D heterogeneous N-heterocyclic carbene nanomaterials with distinct electronic properties and significant catalytic potential.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Yunhao Xie, Liang Chen, Jing Xu, Wei Liu
Summary: This paper investigates the effects of hydrogenation and halogenation on biphenylene networks and shows that the electronic properties can be effectively regulated by controlling the functionalization concentration. The findings expand the potential applications of biphenylene networks in electronic devices and photocatalysis.
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)
