COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
·
IF 5.4
Chengzhen Wen,Keyu Lan,Mingqi Ding,Shibing Bai,Jingjing Jing,Dawei Xu
Traditional materials with single electromagnetic interference (EMI) shielding performance have not satisfied the demand of rapidly developed information and communication technology, which spawns the development of novel materials with higher efficiency and more functionality. However, it is quite difficult to strike a good balance between EMI shielding performance and other functions, such as infrared stealth, which extremely limits the further application, especially in the special or extreme condition. Herein, a novel functional membrane with bifacial architecture was fabricated via the facile solution strategy, which was constructed by the in-situ generation and unidirectional growth Ag nanoparticles and selectively enrichment of Ti 3 C 2 T x sheets on upside and backside of the membrane, respectively. The composite membrane possessed the excellent antibacterial and EMI shielding performance, with the distinctive bifacial wettability and conductivity. Furthermore, the incorporation of Ti 3 C 2 T x effectively reduced the infrared emissivity and endowed the membrane with the infrared stealth performance, providing the novel strategy for constructing multi-functional materials with required structure, showing broad application prospects in the military field.
研究领域:
材料科学
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电子工程
·
军事应用
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Jiajun Zheng,Wendong Zhu,Jiaxing Xiong,Qiuxiang Wang,Rong Xuan,Xinrui Sun,Xinlei Gan,Xiaohui Liu,Like Huang,Yuejin Zhu,Jing Zhang
Power generation and architectural beauty are equally important for designing efficient and esthetically appealing bifacial perovskite solar cells (PSCs). In this work, efficient and multicolored p-i-n-structured PSCs are achieved by taking advantage of a dielectric/metal/dielectric (DMD)-type (MoO3/Ni/Ag/MoO3) transparent counter electrode. The MoO3/Ni underlayer effectively promotes the formation of a continuous and conductive ultrathin Ag transparent film, especially the 1 nm Ni seed layer adjusts the interface energy level between perovskite/MoO3 and Ag, resulting in Ohmic contact of the electrode to promote charge extraction and collection. The upper MoO3 layer with varied thicknesses realizes a spectrally selective antireflection coating, enhancing the rear-side efficiency and forming vivid rear-side colors by optical tuning. As a result, colorful bifacial perovskite solar cells with 20.6% front-side efficiency and 57.6–74.4% bifacial factor are obtained together with colorful rear-side appearance. The bifacial PSCs exhibit good stability by protection from the upper MoO3 layer. This work highlights an effective electric and optic design of the top electrode for artistic bifacial PSCs.
研究领域:
材料科学
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能源技术
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光电工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2019
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IF 3.375
Jiahui Wu,Dong Zhang,Xiaomin He,Yang Wang,Shengwei Xiao,Feng Chen,Ping Fan,Mingqiang Zhong,Jun Tan,Jintao Yang
“Janus-featured” hydrogels with different structure and function for each layer can be particularly important in diverse application. However, very few studies have been conducted on multifunctional Janus-featured hydrogel, and significant challenge for simple, rapid, and efficient fabrication of such hydrogels remains. Herein, Janus-featured poly(N-hydroxyethyl acrylamide) (polyHEAA) hydrogel loaded with modified silica nanoparticle was fabricated by the supergravity method. Silica nanoparticles grafted with poly(3-(dimethyl(4-vinylbenzyl) ammonio) propyl sulfonate) (polyDVBAPS) were first prepared and then introduced into progel of polyHEAA hydrogel. During the formation of the hydrogel, a supergravity resulting from centrifugation was applied, from which silica nanoparticles moved to one side of the hydrogel, forming Janus-featured hydrogels, i.e., a pristine polyHEAA layer and a composite layer. These two layers showed different properties, where the prinstine polyHEAA layer showed excellent antifouling property by resisting the bacteria adsorption (<106 cells/cm2) for up to 5 days, and the nanoparticle-loaded hydrogel layer showed excellent bacteria-releasing properties by releasing >94% adherent bacteria upon a simple treatment with 2.0 M NaCl solution for 10 min. Based on its superb biocompatibility and low biotoxicity, we expect that our interesting strategy may provide a new assumption for the fabrication of “Janus featured” hydrogel and hopefully offer reference significance for the design of hydrogel-based wound dressing in the near future.
研究领域:
生物材料
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高分子科学
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组织工程
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感染控制
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再生医学
✓ 已验证
DOI
高影响因子
Small Science
·
2024
·Vol. 4
·期 7
·2400046
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IF 11.1
Jie Yu,Mengmeng Chen,Neng Hu,Weijia Wang,Lin Lei,Huiqing Fan,Peter Müller-Buschbaum,Qi Zhong
Long-lasting hydrogen evolution and efficient dew harvest is realized via electrospinning a polyvinylidene fluoride (PVDF) membrane on hybrid hydrogels embedded with photocatalytic g-C 3 N 4 /Pt nanosheets. Due to the hindrance of water evaporation by the hydrophobic PVDF membrane, the drying process of the hybrid hydrogels significantly slows down. Hence, the g-C 3 N 4 /Pt nanosheets can continue working on photocatalytic splitting of the water molecules in the hydrogels. When the thickness of the PVDF membrane is 48 μm, the hydrogen evolution rate can reach 2,543 μmol h −1 g −1 , which is 38% more than that of the hybrid hydrogel without covering. Therefore, the hybrid hydrogels covered with PVDF membrane are able to work with high efficiency for 12 h, sufficient for hydrogen evolution during the daytime. In addition, the hydrophobic PVDF membrane and hydrophilic hydrogels construct a Janus structure and induce a fast transport of water molecules from the hydrophobic to hydrophilic side. It is beneficial for the rapid collection of dew in the morning. Based on the long-lasting hydrogen evolution and efficient dew harvest, the present hybrid hydrogels covered with PVDF membrane are very suitable for the environment rich in solar resource and lack of water supply, such as desert or prairie.
研究领域:
材料科学
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环境科学
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化学
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能源科学
✓ 已验证
产品关联
DOI
高影响因子
Food Packaging and Shelf Life
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2023
·
IF 8
Xiangyu Jiao,Jiaxuan Xie,Haiyu Du,Xiaochun Bian,Changtao Wang,Liping Zhou,Yongqiang Wen
In this work, an antibacterial smart absorbent pad with Janus structure was prepared to preserve and indicate the quality of meat. The pad had two layers, polyurethane (PU) nanofibers as the top hydrophobic layer and polyvinyl alcohol (PVA) nanofibers as the bottom absorbent layer. Polyhexamethylenebiguanide hydrochloride (PHMB) was added to the top layer as cationic antimicrobial agent because guanidine group could maintain its strong positive charge in alkaline environment, which keeps the antibacterial ability during meat spoilage that is a process of pH increasing. Besides, the juice of the meat can be absorbed to the bottom layer while the hydrophobic top layer in contact with meat remains dry, which can reduce the multiplication of bacteria. Furthermore, anthocyanin was added to the bottom layer as an indicator to detect spoilage of meat. The experiments show the new antibacterial indicator absorbent pad can effectively inhibit bacterial growth (less than 5 lg CFU/g after 8 days), prolong the shelf life of fresh meat (total volatile base nitrogen less than 20 mg/100 g) to 7 days when stored at 4 °C and indicate the deterioration of meat.
研究领域:
材料科学
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食品科学
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生物技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Haitao Ye,Zhiqiang Feng,Wei Zhou,Yingle Tao,Haiqing Li
Leveraging hygroscopic sorbents for moisture extraction presents a versatile pathway for atmospheric water harvesting (AWH) and microenvironment humidity control, highlighting the critical need for cost-effective and environmentally friendly production of advanced moisture sorbents. To this end, a facile and green confined-bubbling strategy has been developed for cost-effective fabrication of hygroscopic Janus-structured eutectic gels (JEGs), consisting of a porous body covered by a non-porous layer. This unique structure and composition impart JEGs with large air exposure surfaces and remarkable light-trapping capability, leading to significantly enhanced moisture capture and solar-driven water desorption efficiency compared to conventional eutectic gels. When employed as moisture sorbents in a solar-driven AWH system, JEGs achieve a freshwater production rate of 0.78 L H2O kg JEG3 −1 d −1 during a single harvesting cycle under real-world outdoor conditions. Furthermore, JEGs inherently provide passive microenvironment humidity regulation within the range of 38.8–51.3 % relative humidity, making them ideally suitable for fresh food storage and preservation. The confined-bubbling strategy thus provides an environmentally friendly and cost-effective method for producing Janus-structured eutectic gels, representing a new class of moisture sorbents with significant potential for both AWH and microenvironment regulation applications.
研究领域:
材料科学
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环境工程
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可持续技术
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化学工程
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应用物理
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Yilan Wang,Feng Yang,Menghan Yang,Siping Wang,Huatao He,Meiying Hong,Guanxiong Wang,Suiyan Li,Hong Liu,Yaolei Wang
By overcoming interspecies differences and mimicking the in vivo microenvironment, three-dimensional (3D) in vitro corneal models have become a significant novel tool in contemporary ophthalmic disease research. However, existing 3D corneal models struggle to replicate the actual human corneal environment, especially the dome-shaped physiological structure with adjustable curvature. Addressing these challenges, this study introduces a straightforward method for fabricating collagen/chitosan-alginate eyeball-shaped gel microspheres with a Janus structure via a two-phase aqueous system, used subsequently to construct in vitro 3D corneal epithelial tissue models. By adjusting the diameter ratio of collagen/chitosan to alginate droplets, we can create eyeball-shaped gel microspheres with varying curvatures. Human corneal epithelial cells were seeded on the surfaces of these microspheres, leading to the formation of in vitro 3D corneal epithelial tissues characterized by dome-like multilayers and tight junctions. Additionally, the model demonstrated responsiveness to UVB exposure through the secretion of reactive oxygen species (ROS) and proinflammatory factors. Therefore, we believe that in vitro 3D corneal epithelial tissue models with dome-shaped structures hold significant potential for advancing ophthalmic research.
研究领域:
眼科学
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组织工程
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生物医学工程
·
细胞生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Anwar Hosen,Juan Qian,Jianchao Zhan,Man Zhou,Ke Quan,Imran Hossen,Fazle Rabbe,Shaoju Fu
Smart multifunctional textiles are strongly demanded for their advantages of ensuring comfort, safety, and durability for human security protection, but they remain greatly challenged in the structure design and performance improvement. Herein, a novel Coolmax/cotton woven fabric with dual-faced structures (DFS) is fabricated, then spray coated with polydimethylsiloxane composite, and its comprehensive characterizations are fully evaluated. Janus configuration facilitates rapid directional water transport from the hydrophobic inner layer to the hydrophilic outer layer within 4.6 ± 0.45 s, thereby substantially enhancing thermal-moisture comfort under conditions of intense physical exertion and elevated temperatures. Flame retardancy is also imparted through a facile single-layer dip-coating strategy employing chitosan (CS)/phytic acid (PA)/ TiO 2 . Notably, introducing only 0.5 wt.% TiO 2 led to a significant increase in char residue, reaching at 7.61%. Sample CS-PA@TiO 2 (titanium dioxide) showed self-extinguishing behavior in the vertical burning test, as well as a significantly enhanced limiting oxygen index (LOI) to 35.3 ± 1.93 from 19.03 ± 1.25 for pure DFS fabric, and those of peak heat release rate and total heat release for sample CS-PA@TiO 2 is drastically declined by 65% and 47%, respectively. Moreover, the fabric maintained adequate mechanical strength and abrasion resistance, indicating excellent durability under repeated wear. This work will provide synergistically integrated multifunctional textiles through a simple, scalable approach.
研究领域:
纺织工程
·
材料科学
·
消防安全工程
·
功能材料
·
可穿戴技术
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Communications
·
2024
·
IF 3.7
Jing Bai,Xianli Wang,Xin Ye,Xiaoyu Li,Xi Tan,Cheng Wang,Yunfei Guo,Jiaqi Dong,Yi Shao,Chenglin Chu,Feng Xue,Li Tao,Liqu Huang
Due to bacteria in urine and inadequate blood supply, urethral defect repair faces great clinical difficulties. Inspired by the natural structure of the urethra, in this study, we designed a multifunctional hydrogel urethral patch with a Janus structure. The inner layer was a double-network hydrogel of polyvinyl alcohol/carboxymethyl chitosan (PVA/CMCS) enhanced by natural phytic acid (PA) and Mg 2+ (Mg 2+ -PA/PVA/CMCS). The outer layer was composed of poly (L-lactic acid) (PLLA) nanofibers to form a hydrophobic barrier, coupling via a micelle layer to ensure interfacial bonding. The patch exhibited mechanical properties matching soft tissues, with maximum tensile strength and toughness of 1.69±0.13 MPa and 24.7±0.9 MJ/m 3 , respectively, under the strengthening effect of Mg 2+ -PA chelation. Therein, the 4 % Mg 2+ -PA/PVA/CMCS composite patch could maintain unilateral hydrophobicity for at least 14 days and demonstrated an antibacterial rate of 99.0 %±0.1 % against E. coli . In PBS, the patch could deliver Mg 2+ for at least 7 days and stabilize the surrounding pH environment for up to 28 days. In vitro cell experiments indicated that the 4 % Mg 2+ -PA/PVA/CMCS composite patch could promote the human umbilical vein endothelial cell (HUVEC) proliferation and migration, with the angiogenic protein expression enhanced more than 1.2 times compared with the Control group. In conclusion, the patch constructed in this study may provide a new approach to clinical urethral injury repair.
研究领域:
生物材料
·
组织工程
·
生物医学工程
·
材料科学
·
再生医学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）