Article
Chemistry, Multidisciplinary
Naveed A. Bakh, Xun Gong, Michael A. Lee, Xiaojia Jin, Volodymyr B. Koman, Minkyung Park, Freddy T. Nguyen, Michael S. Strano
Summary: This study developed a nanosensor platform for selective molecular recognition of ascorbic acid and riboflavin in a murine model, demonstrating reproducible and stable results even after exposure to mouse serum for three days, and achieving an order of magnitude improvement in p-value during analyte sensing by using a geometrical encoding scheme to correct for optical and mechanical artifacts.
Article
Biochemistry & Molecular Biology
Yu Wang, Mengchan Dong, Xinya Xiong, Xiaoli Gai, Jia Zeng, Guirong Luan, Yufei Wang, Yaochen Wu, Jin Guo
Summary: The non-covalent-functionalized MWCNT membrane with PEG showed improved dispersion and stability, with enhanced hydrophilicity and antifouling abilities. The use of PEG also led to a more concentrated pore size distribution and lower TMP growth rate during filtration, indicating a better performance for humic acid removal. The PEG-MWCNT membrane demonstrated higher TMP recovery rate and reduced irreversible fouling compared to raw MWCNT membranes, suggesting a prolonged service life.
Article
Engineering, Chemical
Fei Han, Jiayue Mao, Shuxun Liu
Summary: Membranes prepared by loading mixtures of rGO and CNT show excellent separation performance and conductivity in treating humic acid. The antifouling mechanism mainly involves electrostatic repulsion and electrocatalytic oxidation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Review
Chemistry, Analytical
Anindya Nag, Md. Eshrat E. Alahi, Subhas Chandra Mukhopadhyay, Zhi Liu
Summary: This paper showcases the use of MWCNT-based sensors for strain-strain applications, highlighting their enhanced electrical, mechanical, and thermal properties. MWCNT-based sensors have proven their ability to deduce a broad spectrum of macro- and micro-scaled tensions and have been widely utilized in various applications.
Article
Engineering, Chemical
Mitun Chandra Bhoumick, Sagar Roy, Somenath Mitra
Summary: This paper investigates the synergistic effect of air sparging in reducing membrane fouling and enhancing water vapor flux in direct contact membrane distillation. The use of air sparging was found to significantly reduce fouling and improve permeate flux compared to conventional DCMD, especially in desalting high salt concentration brine.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Chemical
Zixin Zhang, Guohe Huang, Yongping Li, Xiujuan Chen, Yao Yao, Peng Zhang, Shaojie Ren, Mengna Li, Yifei Luo, Ning Chen, Renfei Feng
Summary: A heterogeneous electro-Fenton catalytic membrane was developed to mitigate membrane fouling. The membrane enabled in-situ generation of hydroxyl radicals at near neutral pH and achieved efficient regeneration of Fe(II). It also reduced fouling by electrostatic repulsion. The membrane exhibited excellent antifouling and self-cleaning properties.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Ranjna Sirohi, Yogesh Kumar, Aravind Madhavan, Narashans Alok Sagar, Raveendran Sindhu, B. Bharathiraja, Hari Om Pandey, Ayon Tarafdar
Summary: It is ironic that despite more than 70% of Earth's surface being covered by water, water scarcity is still a problem. The lack of cost-effective and less energy intensive desalination technologies has been identified as the major cause. This review discusses the design considerations and synthesis of nanomaterials for effective water desalination, emphasizing the importance of material type, preparation method, pore size and surface chemistry, mechanical strength, and biodegradability. Carbon-based materials, aquaporin, zeolites, clays, and metal oxide nanoparticles show promising desalination potential, but their recyclability and environmental impact still need further exploration.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2023)
Article
Materials Science, Composites
Chong Liu, Qing Tan, Yaqin Deng, Peilin Ye, Lingyu Kong, Xu Ma, Li Xu, Yuqing Xu, Qinping Qiang, Wenbo Chen, Yang Zhong, Yakovlev Alexey Nikolaevich, Zhengchun Zhao, Wei Zhou, Bitao Liu
Summary: High-performance piezoresistive sensors have the potential to be used in human health monitoring applications. A piezoresistive sensor without any adhesive polymer was fabricated by introducing multi-walled carbon nanotubes and carbon black into the skeletons of melamine sponge via a simple hydrothermal method. The resulting MWCNTs@CB sensor exhibits excellent performance and can detect physiological motions.
COMPOSITES COMMUNICATIONS
(2022)
Article
Chemistry, Analytical
Saddam Weheabby, Zhenyn Wu, Ammar Al -Hamry, Igor A. Pasti, Adiraju Anurag, Doreen Dentel, Christoph Tegenkamp, Olfa Kanoun
Summary: This study demonstrates the voltammetric sensing of paracetamol using silver nanoparticles and carboxylated multi-walled carbon nanotubes on a screen-printed carbon electrode. The sensor shows effective sensing potential with a low detection limit under optimal conditions. Experimental and computational studies were conducted to support the findings. The proposed method shows promising applications for determining paracetamol in environmental and pharmaceutical samples.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Analytical
Jingying Ma, Chaoyan Zhang, Xiaoping Hong, Jiyang Liu
Summary: We developed a simple hydrothermal technique to fabricate a flexible composite of cerium vanadate (CeVO4) and multi-walled carbon nanotubes (MWCNTs). The CeVO4/MWCNTs composite exhibited good conductivity and electrochemical catalytic performance when immobilized on a glassy carbon electrode (GCE). This CeVO4/MWCNTs-GCE sensor showed excellent analytical performance for the detection of sulfamethazine (SMZ).
Article
Chemistry, Analytical
Shalene Xue Lin Goh, Esther Xue Yi Goh, Hian Kee Lee
Summary: A novel membrane-based SPE-UHPLC-MS/MS method was developed for the determination of nine glucocorticoids in water, with the use of SDS-MWCNTs material and membrane device, enhancing the overall extraction efficiency.
Article
Chemistry, Analytical
Nikita Lapekin, Valeriy V. Golovakhin, Ekaterina Yu Kim, Alexander G. Bannov
Summary: This article investigates the impact of chemical treatment on the sensing properties of multi-walled carbon nanotubes at room temperature. The results suggest that chemical treatment greatly enhances the sensors' response to NO2.
Article
Chemistry, Physical
Usha Philipose, Yan Jiang, Brianna Western, Michael Harcrow, Chris Littler, Ashok Sood, John W. Zeller, Bobby Lineberry, A. J. Syllaios
Summary: The electrical impedance characteristics of MWCNTs networks were studied as a function of CNT concentrations in the frequency range of 1 kHz-1 MHz. Devices with low MWCNT packing density exhibited a frequency-independent plateau in the low-frequency regime, while devices with high MWCNT concentrations showed frequency-independent conductivity over the entire frequency range.
Article
Biochemistry & Molecular Biology
Mitun Chandra Bhoumick, Sagar Roy, Somenath Mitra
Summary: This paper presents a method for treating humic acid solution using carbon nanotube immobilized membrane (CNIM) distillation assisted by air sparging (AS). The modified MD system with air sparging showed improved rejection of humic acid and increased evaporation efficiency. The introduction of air sparging changed the colloidal behavior of deposits and reduced deposition weight. The water vapor flux increased with temperature and decreased with higher volumetric concentrating factor (VCF). The highest mass transfer coefficient was found for the AS-CNIM integrated membrane distillation.
Review
Energy & Fuels
Jin-Myung Choi, Jiye Han, Tushar Rane, Soyeon Kim, Ick Soo Kim, Il Jeon
Summary: This review discusses the fundamentals of utilizing SWCNTs in PSCs, including their characteristics as electron-transporting layer, hole-transporting layer, photoactive layer, and interfacial materials. It also presents strategies to improve PSCs performance through defect control and enhancement of electrical and morphological properties.
JOURNAL OF PHYSICS-ENERGY
(2022)
Article
Nanoscience & Nanotechnology
Hye-Jin Lee, Nan Zhang, Mohamed A. Ganzoury, Yichen Wu, Charles-Francois de Lannoy
Summary: This study demonstrates the simultaneous chlorine removal and oxidation of organic compounds during filtration using an electrochemically assisted electrically conductive carbon nanotube (CNT) membrane. The efficacy of chlorine removal by CNT membranes depends on the mass of CNTs within the membranes and the applied pressure.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Environmental Sciences
Mohamed A. Ganzoury, Saloumeh Ghasemian, Nan Zhang, Matt Yagar, Charles-Francois De Lannoy
Summary: The study investigated the use of an electrochemical oxidation-in-situ coagulation (ECO-IC) process for efficient treatment of mixed industrial wastewater contaminated with heavy metals and organic pollutants. The process successfully degraded organic contaminants and precipitated heavy metals in the solution. ECO-IC shows promise as an effective pre-treatment method for coagulating heavy metals in real industrial wastewaters.
Article
Engineering, Chemical
Mohamad Amin Halali, Charles-Francois de Lannoy
Summary: This study quantified the impact of self-cleaning mechanisms of electrically conductive membranes (ECMs) on Escherichia coli cells and biofilms, finding that electrical current-induced pH change at the membrane surface is more effective in reducing bacterial viability than H2O2 generation and more efficient than bulk pH changes. The research provides guidance for determining optimal current patterns to maximize the antifouling effects of ECMs.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Environmental Sciences
Yichen Wu, Xuebin Xu, Colin P. R. McCarter, Nan Zhang, Mohamed A. Ganzoury, James Michael Waddington, Charles-Francois de Lannoy
Summary: The study found that burning peat can lead to a large amount of pollutants leaching into water, exceeding water quality standards from various countries, especially including COD, TN, TP, and phenols, etc. Different heating temperatures of peat result in variations in the composition of leached substances, and the study calls for more monitoring and treatment of fire-affected peatlands.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Chemical
Nan Zhang, Hye-Jin Lee, Yichen Wu, Mohamed A. Ganzoury, Charles-Francois de Lannoy
Summary: Biofouling detection using electrical impedance spectroscopy (EIS) enables effective cleaning strategies for biofouling prevention. This study explores the use of EIS to monitor biofilm development and electric fields to mitigate biofouling on gold-coated membranes. EIS detection is more sensitive to changes during the early stages of biofouling compared to permeate flux decline. Additionally, electrically conductive membranes (ECMs) demonstrate dual functionality for EIS-enabled detection and surface biofouling mitigation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Yichen Wu, Nan Zhang, Gavin Yuen, Charles-Francois de Lannoy
Summary: Research shows that incorporating graphene-based nanomaterials on the surface of membranes can enhance separation performance, but it also results in low water fluxes and poor stability. To address these issues, researchers developed a cationic polyelectrolyte cross-linked graphene oxide nanocomposite membrane. This membrane showed promising results in removing micropollutants from wastewater, providing a potential solution for low-pressure micropollutant removal.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Nan Zhang, Yichen Wu, Gavin Yuen, Charles-Francois de Lannoy
Summary: CMMR technology combines catalysis and membranes to enable continuous purification and production of organic compounds, while maintaining nanocatalyst size and stability.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Nan Zhang, Yichen Wu, Mohamed A. Ganzoury, Charles-Francois de Lannoy
Summary: Transition-metal phosphides (TMPs) are electrocatalysts with potential applications in hydrogen evolution and the conversion of reactants/contaminants. In this study, a cost-effective nickel phosphorus (Ni-P) membrane was fabricated and used for electrochemical reductive dechlorination. The dechlorination efficiency was achieved with an optimized cathodic potential of -2.50 V. The mechanism is attributed to the partial positive charge on the Ni-P membrane surface, facilitating the generation of reactive hydrogen atoms for dechlorination. This study demonstrates the potential of the Ni-P membrane catalyst for the degradation of chlorinated compounds in industrial wastewaters and landfill leachates.
ACS APPLIED NANO MATERIALS
(2023)
Article
Engineering, Chemical
Scott E. Laengert, Yae Ji Kwon, Joel C. Corbin, Timothy A. Sipkens, Patrick Morkus, Ryan J. LaRue, David R. Latulippe, Catherine M. Clase, Charles-Francois de Lannoy
Summary: Despite increased research on mask filtration testing during the COVID-19 pandemic, there is still ambiguity about the parameters that affect particle filtration efficiency (PFE) and the differences in testing protocols. We evaluated the PFE and differential pressure of various face masks and materials according to different standards. The results showed that aerosol charge neutralization had a significant impact on the measured PFE values, highlighting the importance of neutralizers in preventing overestimations of mask performance and ensuring consistency in testing procedures.
JOURNAL OF AEROSOL SCIENCE
(2023)
Review
Engineering, Environmental
Yichen Wu, Ming Chen, Hye-Jin Lee, Mohamed A. Ganzoury, Nan Zhang, Charles-Francois De Lannoy
Summary: The prevalence of organic micropollutants in water supplies poses serious threats to drinking water safety and public health. Conventional water treatment technologies are insufficient in removing these pollutants. Pressure-driven membrane filtration has shown potential in selectively removing organic micropollutants by tailoring the membrane properties. Over the past decade, polymeric composite membranes have been synthesized and studied for their ability to remove these pollutants. This review summarizes the fate and transport of organic micropollutants in water, evaluates conventional membrane technologies for their removal, and compares them to state-of-the-art nanoenabled membranes with enhanced selectivity.
ACS ES&T ENGINEERING
(2022)
Article
Multidisciplinary Sciences
Mohamad Amin Halali, Charles-Francois de lannoy
Summary: This paper proposes three standardized methods to assess the electrochemical, chemical, and physical stability of electrically conductive membranes (ECMs), including electrochemical oxidation, surface scratch testing, and pressurized leaching. Evaluating the performance of ECMs using these methods enables consistent comparisons and assessments of their viability for industrial applications.
Article
Multidisciplinary Sciences
Yichen Wu, Nan Zhang, Charles-Francois de Lannoy
Summary: Fast, single-step chemical activation method was used to develop bio-based porous carbons with efficient adsorption towards aqueous phenolic micropollutants. This approach offers a competitive alternative to activated carbon for water purification applications. The study provides a useful insight into manufacturing new sorbents from upcycled carbonaceous and bio-based materials for environmental remediation.
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)
