Article
Engineering, Chemical
Zhenzhen Yang, Wei Guo, Hao Chen, Takeshi Kobayashi, Xian Suo, Tao Wang, Song Wang, Long Cheng, Gongping Liu, Wanqin Jin, Shannon M. Mahurin, De-en Jiang, Ilja Popovs, Sheng Dai
Summary: This study successfully developed an in situ cross-linking strategy to prepare molecular sieve membranes with fluorinated micropores using polystyrene as a precursor template, which exhibit excellent performance in CO2/N-2 separation.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Liu Huang, Ziman Xing, Xinyi Zhuang, Jing Wei, Yulei Ma, Bangda Wang, Xia Jiang, Xuezhong He, Liyuan Deng, Zhongde Dai
Summary: This article critically reviews and discusses the research progress of membranes for hydrogen/methane separation, including polymeric membranes, mixed matrix membranes, and carbon molecule sieve membranes. The study finds that polymeric membranes and carbon molecule sieve membranes exhibit outstanding separation properties, while mixed matrix membranes show lower performance. The article also presents the future research directions and perspectives for hydrogen/methane separation membranes.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Applied
Marcia Andrade, Andrew J. Parnell, Gabriel Bernardo, Adelio Mendes
Summary: Novel carbon adsorbents were prepared for propane/propylene separation, showing unprecedented adsorption selectivity to propane, attributed to the shape and size of the pores and the rigidity of propylene compared with propane. The best performing sample, MFF_8, with rod-shaped pores, holds great potential for separations of adsorbates displaying different worming performances.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Xiaohua Tong, Shuli Wang, Jiangnan Dai, Shuai Wang, Xiaogang Zhao, Daming Wang, Chunhai Chen
Summary: Four aromatic polyimides were synthesized, and the impact of noncoplanar rigid groups on gas separation performance was investigated. The results showed that incorporating noncoplanar rigid groups improved the gas transport properties of the polyimides without sacrificing selectivity.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Marjan Farnam, Hilmi bin Mukhtar, Azmi bin Mohd Shariff
Summary: Polymeric blend mixed matrix membranes (PB3Ms) with different blend compositions at a fixed content of carbon molecular sieve (CMS) inorganic filler were synthesized, showing significant enhancement in CO2 permeance and CO2/CH4 selectivity. The membranes prepared by solution casting method demonstrated competitive CO2/CH4 separation performance compared to pure PES membrane.
Article
Engineering, Chemical
Hongfang Guo, Jing Wei, Yulei Ma, Zikang Qin, Xiaohua Ma, Roman Selyanchyn, Bangda Wang, Xuezhong He, Bo Tang, Lin Yang, Lu Yao, Wenju Jiang, Yuanfa Zhuang, Dengguo Yin, Xue Li, Zhongde Dai
Summary: The use of a novel porogen in the precursor of the Troger's base polymer allows for the reduction of carbonization temperature, leading to the fabrication of carbon molecular sieve membranes with high gas permeability and selectivity.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Rita Sulub-Sulub, Angel de Jesus Montes-Luna, Manuel Aguilar-Vega
Summary: Carbon molecular sieve membranes (CMSM) were prepared by pyrolysis of high temperature resistant polyimides DP-TMPD, DP-MBDAM, DPt-TMPD and DPt-MBDAM. The CMSM showed higher selectivity and gas permeability coefficients compared to the polyimide precursors. The presence of tert-butyl lateral groups in the polyimide precursors resulted in increased gas permeability and decreased selectivity in the CMSM. Overall, the DP and DPt based CMS membranes demonstrated a significant increase in selectivity without a significant loss in permeability.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Polymer Science
Sirui Ge, Subarea Samanta, Martin Tress, Bingrui Li, Kunyue Xing, Philippe Dieudonne-George, Anne-Caroline Genix, Peng-Fei Cao, Mark Dadmun, Alexei P. Sokolov
Summary: Characterization of telechelic associating polymers with different molecular weights using SAXS, BDS, and rheology revealed phase separation of functional end groups and the significant impact of an interfacial polymer layer on the macroscopic mechanical properties of the materials.
Article
Chemistry, Multidisciplinary
Miguel Paez-Perez, Ismael Lopez-Duarte, Aurimas Vysniauskas, Nicholas J. Brooks, Marina K. Kuimova
Summary: Lipid packing in cellular membranes affects membrane tension and microviscosity, influencing cellular adaptation, homeostasis, and disease. The relationship between membrane tension and microviscosity is strongly influenced by the lipid composition of the bilayer, with different membrane structures exhibiting varying responses to tension.
Article
Chemistry, Analytical
Miguel Paez-Perez, Michael R. R. Dent, Nicholas J. J. Brooks, Marina K. K. Kuimova
Summary: Lipid membranes play a crucial role in cellular integrity and regulation, and their structural and mechanical properties need to be tightly controlled for proper function. In this study, we investigated the correlation between lipid organization parameters and a molecular rotor's fluorescence readout by simultaneously measuring fluorescence lifetime and using X-ray diffraction. Our results showed a phase-dependent correlation between the structural parameters and mechanical properties of lipid bilayers, providing accurate prediction of the lipid membrane's structure. Moreover, we found that membrane thickness differences between lipid phases are not necessary for the formation of lipid microdomains and can be disrupted by the presence of line-active molecules. These findings support the use of membrane-sensitive dyes as reporters of lipid membrane structure.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Tang Yuanhui, Li Chunyu, Lin Yakai, Zhang Chunhui, Liu Ze, Yu Lixin, Wang Haihui, Wang Xiaolin
Summary: A new harmonic force field consistent with PES structure was constructed, and the effect of polymer chain rigidity on the formation of PES membranes was investigated. The results showed that increased PES chain rigidity improved the phase separation speed and led to the formation of the surface layer more quickly.
CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
(2022)
Article
Social Sciences, Mathematical Methods
Robert J. Hill, Michael Scholz, Chihiro Shimizu, Miriam Steurer
Summary: This article introduces the Rolling-time-dummy (RTD) method used for computing official house price indexes (HPIs) and addresses three key issues related to RTD: determining the optimal rolling window length, determining the optimal linking method, and proposing modifications to make the method more robust.
JOURNAL OF OFFICIAL STATISTICS
(2022)
Article
Polymer Science
Micah Belle Marie Yap Ang, Yun-Ting Lu, Shu-Hsien Huang, Jeremiah C. Millare, Hui-An Tsai, Kueir-Rarn Lee
Summary: Surfactants can modify the property and performance of polyamide layer during interfacial polymerization of amines and trimesoyl chloride. Different types of surfactants have different effects on the membrane, such as changing the surface charge and hydrophilicity, and affecting the water and salt transport. It is important to choose a suitable surfactant to regulate the membrane performance.
JOURNAL OF POLYMER RESEARCH
(2022)
Article
Engineering, Chemical
Rumwald Leo G. Lecaros, Andrea R. Matira, Lemmuel L. Tayo, Wei-Song Hung, Chien-Chieh Hu, Hui-An Tsai, Kueir-Rarn Lee, Juin-Yih Lai
Summary: In this study, a composite membrane of graphene oxide (GO) and oxygen-passivated graphene quantum dots (OGQDs) was prepared using a pressure-assisted self-assembly method. By adjusting the loading of OGQDs, the interlayer spacing between GO nanosheets was controlled. The introduction of OGQDs altered the channel structure of GO, resulting in increased water flux and reduced permeation of n-butanol molecules. The composite membrane showed excellent performance in n-butanol dehydration.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Hong-Li Yang, Micah Belle Marie Yap Ang, Hui-An Tsai, Kueir-Rarn Lee, Juin-Yih Lai
Summary: The influence of adding carbon quantum dots (CQDs) on the phase separation behavior of cellulose acetate (CA) solution was investigated. It was found that CQDs can affect the kinetics and thermodynamics of the system, leading to changes in the membrane structure and performance.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Engineering, Chemical
Chien-Chieh Hu, Hsin-Hung Yeh, Chun-Po Hu, Rumwald Leo G. Lecaros, Chin-Chi Cheng, Wei-Song Hung, Hui-An Tsai, Kueir-Rarn Lee, Juin-Yih Lai
Summary: This study focuses on the development of a mixed matrix composite membrane for efficient separation of greenhouse gasses. By incorporating various materials and modifying the membrane layers, the researchers achieved optimized CO2 permeability and selectivity. The addition of amine-functionalized graphene oxide further enhanced the membrane performance and stability at higher pressure conditions.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Engineering, Chemical
Rumwald Leo G. Lecaros, Szu-Ying Ho, Hong-Li Yang, Hui-An Tsai, Shu-Hsien Huang, Wei-Song Hung, Chien-Chieh Hu, Kueir-Rarn Lee, Juin-Yih Lai
Summary: The ionic interactions between PAMAM dendrimers and sodium alginate were improved by using an acidic solution, resulting in better separation efficiency and water stability in liquid mixture separation processes.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Micah Belle Marie Yap Ang, Amira Beatriz Gaces Deang, Yu-Hsuan Chiao, Ruth R. Aquino, Jeremiah C. Millare, Shu-Hsien Huang, Hui-An Tsai, Kueir-Rarn Lee
Summary: We fabricated thin-film nanocomposite (TFN) polyamide membrane for the treatment of brine solutions. Different surfactant-modified nanoclay (montmorillonite, MMT) were embedded separately into polyamide layer through interfacial polymerization between piperazine (PIP) and trimesoyl chloride (TMC). The results showed that DDAB surfactant had the most significant effect on membrane performance, resulting in the most uniformly dispersed nanoclays on the membrane surface, as well as higher pure water flux and fouling resistance.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Yueping Bao, Nupur Gupta, Chong Yang Chuah, Yen Nan Chuah, Chun-Po Hu, Xiao Hu
Summary: This study reported a novel water gel material for the selective recovery of high concentration PFOA. The results showed that the water gel had a high adsorption capacity and selectivity for PFOA under specific conditions. Additionally, the water gel exhibited pH responsiveness, allowing for easy release of PFOA. Incorporating the water gel into a dense membrane enabled effective separation of colloidal particles in a water system.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Han Feng, Yen Nan Liang, Chun Po Hu, Xiao Hu
Summary: In this study, two-dimensional ultrathin InVO4 nanoribbons with high adsorption capacity and ease of regeneration were synthesized. The material exhibited impressive selective adsorption capabilities towards cationic dyes, with strong electrostatic attraction identified as the predominant adsorption mechanism. Additionally, the adsorbents showed remarkable resilience to pH variation and could be rapidly and efficiently regenerated.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Chien-Chieh Hu, Chia-Wei Lin, Chun-Po Hu, Degu Lere Keshebo, Shu-Hsien Huang, Wei-Song Hung, Kueir-Rarn Lee, Juin-Yih Lai
Summary: Carbon dioxide-enriched air can promote plant growth, and by modifying the membrane structure, better results can be achieved. Modified PDMS/PSf composite membrane can increase the permeance and concentration of carbon dioxide, showing potential in plant cultivation.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Engineering, Environmental
Chien-Chieh Hu, Cheng-Yu Wang, Meng-Che Tsai, Rumwald Leo G. Lecaros, Wei-Song Hung, Hui -An Tsai, Kueir-Rarn Lee, Juin-Yih Lai
Summary: This study developed a Janus membrane capable of simultaneously capturing and converting carbon dioxide from air. The selective layer and reactive layer design allowed for efficient concentration and conversion of CO2 to CO. By adjusting the copper doping amount, optimal photocatalytic activity was achieved. This research provides a new approach for the simultaneous capture and conversion of CO2 from air using Janus membranes.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Zeming He, Chun-Po Hu, Hui Chen, Xuelong Chen, Song Kiat Jacob Lim, Jingdan Hu, Xiao Hu
Summary: In this study, geopolymer-based anisotropic membranes were fabricated using direct ink writing (DIW) technology for water treatment. The 3D-printed membranes were characterized and systematically compared with other geopolymer and ceramic membranes. By utilizing rheological properties of geopolymer ink and the printing principle of DIW, a geopolymer-yttria stabilized zirconia (YSZ) ultrafiltration (UF) membrane with a dense rejection layer and gradient macroporous support was successfully obtained. The printed membrane showed high permeances, rejection efficiency, and chemical stability in alkaline solution, making it a promising option for water treatment.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Physical
Xinying Chen, He Zhang, Shizhe Xu, Xiaoge Du, Kaida Zhang, Chun-Po Hu, Sihui Zhan, Xueyue Mi, Wen Da Oh, Xiao Hu, Ziyong Pan, Yueping Bao
Summary: A novel Co-Fe bimetallic immobilized cellulose hydrogel bead (CoFeO@CHB) was prepared and applied for tetracycline (TC) degradation in the presence of peroxymonosulfate (PMS). The results showed that CoFeO@CHB had high resistance and stability to different water bodies, and the common anions and natural organic matters had limited effect on TC degradation. CoFeO@CHB could effectively activate PMS to generate multiple reactive oxygen species (ROS), and the CoFeO@CHB/PMS system showed high potential in practical application.
Article
Chemistry, Multidisciplinary
Kok Wei Joseph Ng, Jacob Song Kiat Lim, Nupur Gupta, Bing Xue Dong, Chun-Po Hu, Jingdan Hu, Xiao Matthew Hu
Summary: Chemical depolymerization is a promising method for recycling plastic waste, but it requires a lot of energy and faces challenges in purification. In this study, the authors demonstrate the upcycling of mixed plastic waste through a reprocessable vitrimer of depolymerized oligomers. They use glycerol as a cleaving agent to partially depolymerize the plastic waste and obtain branched oligomers, which are then used to produce a crosslinked yet reprocessable vitrimer. This work shows the potential of using depolymerized plastic waste to create strong and recyclable vitrimer resins.
COMMUNICATIONS CHEMISTRY
(2023)
Article
Chemistry, Physical
Jie Sheng, Jingshan He, Dun Ma, Yuanbo Wang, Wu Shao, Tian Ding, Ronghao Cen, Jingwen He, Zhihao Deng, Wenjun Wu
Summary: This study presents an innovative approach to improve the photovoltaic conversion characteristics and stability of perovskite solar cells through carbon electrode interface modification. By in-situ polymerization and carbonization on the surface of nano-graphite, a dendritic structure carbon electrode is formed, reducing the work function and aligning the energy levels with perovskite. This leads to improved charge and hole collection efficiency, resulting in increased photovoltaic conversion efficiency. Furthermore, the modified carbon electrode-based perovskite solar cells exhibit exceptional stability, maintaining high efficiency even without encapsulation.
Article
Chemistry, Physical
Guodong Shi, Jian Song, Xiaoxiao Tian, Tongtong Liu, Zhanjun Wu
Summary: This study demonstrates the improvement of mechanical properties and reduction of coefficient of thermal expansion (CTE) in graphene oxide (GO)/epoxy (EP) nanocomposites by enhancing the interface between GO and EP through functionalization and incorporating rigid-flexible interphases. The results reveal that the SiO2-PEA-GO hybrid exhibits better strengthening and toughening effects, as well as lower CTE, compared to the PEA-GO hybrid due to the presence of rigid-flexible interfaces with higher bonding strength and better energy dissipation mechanisms. Additionally, the nanocomposites with longer polyetheramine (PEA) molecules in the rigid-flexible interphases demonstrate higher strength and toughness, while maintaining a lower CTE. This work provides a promising strategy for constructing adjustable flexible-rigid interfacial structures and offers potential in developing GO/EP nanocomposites with high mechanical properties and low CTE.
Article
Chemistry, Physical
Rafal Janus, Sebastian Jarczewski, Jacek Jagiello, Piotr Natkanski, Mariusz Wadrzyk, Marek Lewandowski, Marek Michalik, Piotr Kustrowski
Summary: In this study, a facile procedure for the synthesis of CMK-1 and CMK-2 carbon replicas was developed. The method utilizes basic laboratory equipment and a renewable carbon source, and operates under mild conditions. The resulting carbon mesostructures exhibit exquisite replication fidelity and structural homogeneity, making them suitable for applications in various fields.
Article
Chemistry, Physical
Anqi Wang, Connor J. MacRobbie, Alex Baranovsky, Jean-Pierre Hickey, John Z. Wen
Summary: In this study, a novel polymer-free nanothermite aerogel with a wide range of nanoparticle loading was fabricated via a new additive manufacturing process. The SEM images showed a unique porous structure formed by extra thin rGO sheets, wrapping individual nanothermite clusters. The DSC-TGA results and high-speed combustion videos confirmed the enhanced energetic performance of the printed specimen.
Article
Chemistry, Physical
Wanze Wu, Misheng Zhao, Shiwei Miao, Xiaoyan Li, Yongzhong Wu, Xiao Gong, Hangxiang Wang
Summary: Superhydrophobic solar-driven interfacial evaporator is an energy-efficient technology for seawater desalination, which is easily fabricated using robust photothermal superhydrophobic coating and substrate. The created bifunctional coating on the melamine sponge substrate shows stable and highly efficient photothermal and superhydrophobic performance for seawater desalination. This superhydrophobic solar-driven interfacial evaporator is expected to have wide applications in seawater desalination.
Article
Chemistry, Physical
Zichen Xiang, Zhi Song, Tiansheng Wang, Menghang Feng, Yijing Zhao, Qitu Zhang, Yi Hou, Lixi Wang
Summary: This study presents a co-electrospinning synthesis strategy to fabricate lightweight and porous Co@C composite nanofibres with wideband microwave attenuation capacity. The addition of MOF-derived Co additives enhances the low-frequency absorption performance.
Article
Chemistry, Physical
J. Snow, C. Olson, E. Torres, K. Shirley, E. Cazalas
Summary: This study investigates the use of a perovskite-based graphene field effect transistor (P-GFET) device for X-ray detection. The sensitivity and responsivity of the device were found to be influenced by factors such as X-ray tube voltage, current, and source-drain voltage. Simulation experiments were conducted to determine the dose rate and energy incident on the device during irradiation.
Article
Chemistry, Physical
Zuzana Jankovska, Lenka Matejova, Jonas Tokarsky, Pavlina Peikertova, Milan Dopita, Karolina Gorzolkova, Dominika Habermannova, Michal Vastyl, Jakub Belik
Summary: This study provides new insights into microwave-assisted pyrolysis of scrap tyres, demonstrating that it can produce microporous carbon black with potential application in xylene adsorption. Compared to conventional pyrolysis, microwave pyrolysis requires less time and energy while maintaining similar adsorption capacity.
Article
Chemistry, Physical
Max Bommert, Bruno Schuler, Carlo A. Pignedoli, Roland Widmer, Oliver Groning
Summary: A detailed understanding of the interaction between molecules and two-dimensional materials is crucial for incorporating functional molecular films into next-generation 2D material-organic hybrid devices. This study compares the energy level alignment of different-sized fullerenes on a Moire superstructure and finds that C-84 fullerenes can be either neutral or negatively charged depending on slight variations of the electrostatic potential. This discovery suggests a new path to achieve ambipolar charge transfer without overcoming the electronic gap of fullerenes.
Article
Chemistry, Physical
Yuanjing Cheng, Xianxian Sun, Ye Yuan, Shuang Yang, Yuanhao Ning, Dan Wang, Weilong Yin, Yibin Li
Summary: The dual-structure aerogel (GS) consisting of flexible silica fibers and graphene honeycomb structures exhibits excellent resilience, flexibility, and reliability. It also shows remarkable wave absorbing performance, making it an ideal candidate for microwave absorption applications such as flexible electronics and aerospace.
Article
Chemistry, Physical
Shuyu Fan, Yinong Chen, Shu Xiao, Kejun Shi, Xinyu Meng, Songsheng Lin, Fenghua Su, Yifan Su, Paul K. Chu
Summary: Graphene coatings are promising solid lubrication materials due to their mechanical properties. This study presents a new method for in situ deposition of high-quality graphene coatings on hard substrates using NiCo solid solution and competitive reaction strategies. The graphene coating deposited on substrates with deep NiCo solid solution demonstrates superior low-friction and durability.
Article
Chemistry, Physical
Mengdi Wang, Sanyin Qu, Yanling Chen, Qin Yao, Lidong Chen
Summary: The improved thermoelectric properties of conducting polymers are achieved by selectively capturing single-walled carbon nanotubes (SWNTs) in a conducting polymer film, leading to increased carrier mobility and reduced thermal conductivity. The resulting composite film exhibits significantly higher electrical conductivity and lower thermal conductivity compared to films with a mixture of SWNTs. This work provides a convenient and efficient method to enhance the thermoelectric properties of conducting polymers.
Review
Chemistry, Physical
Heng Wei, Weihua Li, Kareem Bachagha
Summary: This article reviews the research progress of carbon nanotube-based microwave absorbing materials (MAMs) in recent years, covering the fundamental theory, design strategies, synthesis methods, and future development directions.
Article
Chemistry, Physical
Chenguang Shi, Junlong Huang, Zongheng Cen, Tan Yi, Shaohong Liu, Ruowen Fu
Summary: This study developed a high-performance Li metal host material, which achieved dendrite-free Li deposition with a low nucleation overpotential and high Coulombic efficiencies through the combination of Ti3C2-g-PV4P sheets and Ag nanoparticles. The full cells assembled with the Li@host anode and LiFePO4 cathode exhibited high discharge capacity and excellent cycling stability, demonstrating a perspective design for future energy storage devices.
Article
Chemistry, Physical
Tomotaro Mae, Kentaro Kaneko, Hiroki Sakurai, Suguru Noda
Summary: A new partial prelithiation method for SiO/C-CNT electrodes was developed, which showed reduced irreversible capacity and achieved high energy densities with good reversibility. The method allows for precise control of the degree of prelithiation and is applicable to various chemistries.
