Article
Nanoscience & Nanotechnology
Xianhang Yan, Yanxin Wang, Zhenzhen Huang, Zhiyuan Gao, Xinhui Mao, Matt J. Kipper, Linjun Huang, Jianguo Tang
Summary: In this paper, Janus PAN nanofiber membranes (PNM) were prepared by co blending hydrophilic SiO2 nanoparticles, carbon nanotubes (CNTs) doped with PAN (PNM-SiO2 and PNM-CNT, respectively) and then using sequential multilayer electrospinning. The existence of electrostatic mutual gravitational force between SiO2 and CNTs makes the binding between the multilayer membranes exist more firmly. Janus PAN membranes have different wetting properties and can efficiently separate water-in-oil and oil-in-water emulsions with high flux and separation efficiency.
ACS APPLIED NANO MATERIALS
(2023)
Article
Environmental Sciences
Ji Hee Choi, Young Ju Jung, Hee Ju Kim, Yu Jin Seo, Won San Choi
Summary: Emerging pollutants, such as microplastics, are a global concern. Daily laundry is the main source of microplastic release into the environment. Analysis showed that the dreg from laundry consists of microplastics and other materials. To reproduce real conditions, various types of model microplastics with added alien materials were used to test microplastic removal. We propose a new approach for designing a laundry filter system to remove both sodium dodecyl benzenesulfonate and hydrophilic/hydrophobic microplastics simultaneously.
Review
Chemistry, Multidisciplinary
Yaqi Chen, Yan Liang, Li Wang, Mengdan Guan, Yameng Zhu, Xiaoping Yue, Xiao Huang, Gang Lu
Summary: This review discusses the recent advances in both the preparation and applications of freestanding Janus nanosheets, as well as the methods for preparing and applications in various fields.
Review
Chemistry, Multidisciplinary
Zhipeng Wu, Kai Yin, Junrui Wu, Zhuo Zhu, Ji-An Duan, Jun He
Summary: Janus wettability membranes with asymmetric surface wettability have gained attention, with femtosecond laser microfabrication applied in structuring them. This review discusses recent advances in femtosecond laser-structured Janus membranes and their applications.
Review
Green & Sustainable Science & Technology
Rong Zhang, Yihan Sun, Zhiguang Guo, Weimin Liu
Summary: Janus membranes, with their asymmetric wettability, have emerged as innovative materials for oil/water separation with various separation principles. They have advantages over traditional separation methods in emulsion separation, but also face challenges in terms of development and application.
ADVANCED SUSTAINABLE SYSTEMS
(2021)
Article
Materials Science, Composites
Zhengfei Wu, Yi Wang, Liangliang Dong, Mingqing Chen, Dongjian Shi
Summary: In this study, Janus membranes with asymmetric wettability were fabricated using a facile polydopamine (PDA) controlled modification method. These membranes showed excellent separation selectivity and high permeability for various oil/water mixtures. The membranes exhibited good reusability and could be applied in complex oil/water separation systems.
COMPOSITES COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Yanio E. Milian, Martha Claros, Svetlana Ushak, Stella Vallejos
Summary: This review systematically evaluates and classifies silica-based Janus nanoparticles, describing their synthesis methods and discussing their amphiphilic properties and potential applications. It provides important references and guidance for researchers in this field.
APPLIED MATERIALS TODAY
(2023)
Article
Nanoscience & Nanotechnology
Roger M. Pallares, Sarah L. Karstens, Trevor Arino, Andrew M. Minor, Rebecca J. Abergel
Summary: In this study, a modified simultaneous growth and self-aggregation method was used to produce ceria and silver Janus nanoparticles for the conversion of 4-nitrophenol. By controlling the growth conditions, the interface between ceria and silver was manipulated, resulting in increased exposure to reactants and improved reaction rate constants. These findings provide design rules for better performing hybrid nanocatalysts.
ACS APPLIED NANO MATERIALS
(2023)
Review
Chemistry, Applied
Yichuan Li, Guofu Zhu, Yu Wang, Yongming Chai, Chenguang Liu
Summary: Oriented MFI zeolite membranes, compared with other orientations, can effectively improve the molecular transmission rate and are widely used in mixture separation and catalysis. However, twinning easily occurs during membrane preparation and controlling membrane orientation is challenging.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Physical
Baibing Wei, Kai Wang, Jiarong Wang, Tian C. Zhang, Xiaobao Tian, Shaojun Yuan, Yingqi Li, Haiqing Chang, Ying Liang, Zhihong Zhou
Summary: A thermo-modulated nanofibrous skin covered Janus membrane with good antifouling ability and oil-water separation performance was successfully developed using a scalable synergetic electrospraying/electrospinning method. The membrane exhibited high flux and efficiency in separating oil/water mixtures, and demonstrated improved wettability and water permeability with temperature variation. It also showed excellent antifouling and cleaning ability due to its thermoresponsive property.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Engineering, Chemical
Wenying Cui, Tingting Fan, Yanan Li, Xueyan Wang, Xianfeng Liu, ChaoJing Lu, Seeram Ramakrishna, Yun-Ze Long
Summary: Researchers have successfully developed a robust functional Janus nanofibrous filter that can control air pollution and purify oily wastewater in harsh environments. The filter, with its unique bi-layer structure and synergistic effect of multiple components, has high filtration efficiency and low air resistance. It also offers significant advantages in personal protection and retains excellent performance even after strong acid/alkali treatments. Moreover, the filter exhibits switchable oil/water separation ability, efficiently separating different oil/water mixtures and emulsions.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Green & Sustainable Science & Technology
Yushan Li, Ting Wu, Hui Shen, Shiwen Yang, Yi Qin, Zongmin Zhu, Long Zheng, Xianjie Wen, Minggui Xia, Xianze Yin
Summary: A Janus photothermal porous fibrous membrane is developed for efficient solar-driven seawater desalination, showing high salt rejection rate, stable solar-thermal conversion efficiency, and antibacterial activity, with potential applications in environmental protection.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Multidisciplinary
Wenguang Wang, Yanqiu Zhang, Xiaobin Yang, Haixiang Sun, Yadong Wu, Lu Shao
Summary: This study proposes a novel Janus-charged M-CEMs with a positively-charged thin layer and a negatively charged commercial cation exchange membrane. The Janus-charged M-CEMs exhibit high perm-selectivity, high total cation fluxes, and effective suppression of anion migration, showing great potential in ion separation.
Article
Engineering, Chemical
Qian Wu, Wen-Ting Zhang, Hao-Nan Li, Ye Cao, Rui-Bin Weng, Yong-Jin Li, Jing Yang
Summary: This study presents a framework for the simultaneous synthesis and separation of hydrophobic ionic liquids (ILs) using an environmentally benign membrane reactor system. The use of a Janus hollow fiber membrane reactor (JHFMR) with a charged inner surface allows for the efficient production of ILs with high yield and low impurity.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Polymer Science
Suna Azhdari, Fabian Herrmann, Deniz Coban, Juergen Linders, Andre H. Groeschel
Summary: This study investigates the behavior of Janus nanoparticles (JNPs) in spherical confinement and compares it to the confinement self-assembly of block copolymers. The research finds that the ordered structure of nanoparticles diminishes when the Janus balance deviates from parity.
MACROMOLECULAR RAPID COMMUNICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Haili Zheng, Jian Wang, Guojun Liu
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Nanoscience & Nanotechnology
Desiree N. Bender, Kaka Zhang, Jiandong Wang, Guojun Liu
Summary: This paper reports the incorporation of fluorinated agents into a polyhedral oligomeric silsesquioxane (POSS) coating to produce hard/flexible omniphobic coatings, and investigates the influence of the type and amount of these agents on the wetting and mechanical properties of the coatings. The study provides guidelines for producing coatings with improved omniphobicity and wear resistance.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Tina Tabrizizadeh, Jian Wang, Rahul Kumar, Sumit Chaurasia, Kevin Stamplecoskie, Guojun Liu
Summary: This study investigates the construction of efficient water-evaporation-induced generators by placing carbon nanofiber mats on fiberglass screens, analyzing the influence of structural parameters on the generated electricity. The optimized carbon nanofiber mats produce electricity at an areal power density of 83 nW/cm², almost 10 times higher than some existing devices, making them an attractive porous scaffold for WEIGs.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Haili Zheng, Guojun Liu, Brandon Becher Nienhaus, Jasmine Buddingh
Summary: This paper presents a bilayer coating with high hardness and low ice adhesion. The coating is prepared by cocuring triisocyanate and methacrylate polyol, resulting in a hard matrix. The surface of the coating is covered by a PDMS brush layer, which, when lubricated with silicone oil, reduces ice adhesion. This design allows for effective ice shedding and maintains low ice adhesion values for multiple icing/deicing cycles.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Sumit Chaurasia, Rahul Kumar, Tina Tabrizizadeh, Guojun Liu, Kevin Stamplecoskie
Summary: This study introduces a new use of plates for thin layer chromatography (TLC) coated with alpha-Al2O3, which can provide continuous voltage and short circuit current under various humidity conditions. The device offers advantages such as low cost, high stability against surface reactions, easy fabrication, and power output under different weather conditions, making it a realistic possibility for use in renewable power generation applications.
Article
Materials Science, Multidisciplinary
Desiree N. Bender, Sukhendu Hait, Joseph D. Lichtenhan, Guojun Liu
Summary: In this study, a series of heteroleptic POSSs were photocured under different conditions, and it was found that the G(2)M(6)POSS coating cured in N-2/air obtained the hardest coating. This coating has high hardness and good flexibility, making it suitable for protecting the touchscreens of foldable smartphones among other applications.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Ziruo Lai, Guojun Liu
Summary: This paper reports the preparation of a bilayer bifunctional coating for foldable smartphones, which is deposited via a single polymer mixture. The coating exhibits excellent surface energy, transmittance, hardness, and durability, making it a great candidate for protective coatings in various applications.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Tina Tabrizizadeh, Zhe She, Kevin Stamplecoskie, Guojun Liu
Summary: Water-evaporation-induced generators (WEIGs) are environmentally friendly power sources, but they traditionally have weak power outputs. This study introduces C/metal and metal/metal WEIGs, which utilize the Galvanic corrosion of metals to significantly enhance the power output of WEIGs. The study also demonstrates that the asymmetric environments and potential differences between the two electrodes in a WEIG can facilitate metal corrosion and the fabrication of compact Galvanic WEIGs.
Article
Chemistry, Multidisciplinary
Jasmine V. Buddingh, Satoshi Nakamura, Guojun Liu, Atsushi Hozumi
Summary: This study demonstrates the tunable thermo-responsive syneresis of transparent fluorinated organogels, which can release and reabsorb lubricants based on surrounding temperatures, leading to improved durability and repellency of coatings.
Article
Engineering, Environmental
Desiree N. Bender, Guojun Liu
Summary: A new polyhedral oligomeric silsesquioxane coating modified with perfluorinated poly(propylene oxide) and developed using an innovative method for composite making has been shown to have high wear-resistance, omniphobicity, and superior bendability. The resulting composite coating has impressive properties including high transparency, low surface energy, exceptional hardness, and ink contraction capability. These coatings are of practical value and may find applications in foldable touchscreens.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Brandon Becher-Nienhaus, Guojun Liu, Jasmine Buddingh, Haili Zheng
Summary: This paper presents a method to achieve ice shedding by creating a heavily cross-linked bulk and lightly cross-linked surface coating. The coating is made by synthesizing two methacrylate polyols, stratifying them on the surface, and curing them thermally. The resulting LICROS coating exhibits low ice adhesion and high wear resistance. This approach offers a cost-effective way to produce coatings with desirable properties.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Jasmine V. Buddingh, Guojun Liu
Summary: A high-hardness coating can resist ice adhesion, while a soft coating is prone to ice shedding. A bilayer polyurethane coating was developed that achieved both high hardness and low ice adhesion strength. Another bilayer coating with a diamine, epoxy compound, and poly(glycidyl methacrylate) with poly(dimethylsiloxane) side chains was prepared to maintain consistently low ice adhesion strength over numerous icing/deicing cycles. This study compared the ice-shedding properties of different lubricated coatings and found that the smooth bilayer epoxy coating, lubricated with a silicone oil mixture, maintained low ice adhesion strength even after 30 icing/deicing cycles.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Ziruo Lai, Guojun Liu
Summary: This paper reports a new method to prepare a bilayer bifunctional coating for the touchscreen of a foldable smartphone. The coating exhibits excellent mechanical and chemical properties, and can withstand bending without cracking. Apart from its application in foldable smartphones, this material also shows promising potential for various other applications.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Alex N. Harper, Guojun Liu
ACS APPLIED POLYMER MATERIALS
(2020)
Article
Materials Science, Multidisciplinary
Alex N. Harper, Guojun Liu
ACS APPLIED POLYMER MATERIALS
(2020)