MATERIALS LETTERS
·
2023
·
IF 3
Jinmei He,Yuhang Gao,Jiehui Li,Menglin Zhu,Cai-Li Sun,Mengnan Qu
Herein, an integrated Janus evaporator with hydrophobic top and hydrophilic bottom was reported. The solar evaporator employs melamine foam coated with polypyrrole (PPy) as substrate, in which the PPy coating enhances light absorption, heat transfer, and steam release while preventing salt deposition due to its hydrophobic nature. The hydrophilic bottom of the evaporator was obtained by local modification with sodium alginate, promoting upward water transport and reduce heat loss. The evaporation rate of the integrated Janus evaporator was maintained at 1.78 kg m -2 h −1 when 10 % brine was evaporated for 12 h under 1 sunlight (1 kW m −2 ). The distillation remained at 1.68 kg m -2 h −1 for 6 h and the photothermal conversion efficiency reached 99.0 %. Additionally, the evaporator has shown impressive results in treating wastewater. The combination of high efficiency, low cost, and easy preparation makes the Janus interface evaporator promising for the fabrication of solar steam generation systems suitable for practical desalination and wastewater treatment.
研究领域:
材料科学
·
环境科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Bing Sun,Mengyuan Wu,Xuguang Zhao,Lingfeng Wang,Yuandong Jia,Zhijie Yuan,Haojie Wu,Jibo Diao,Gaohong He,Xiaobin Jiang
Low-temperature differential evaporation constitutes a promising direction for energy-saving desalination. Herein, a novel Janus interfacial structure with well-ordered micro/nanopores is developed. Fabricated Janus interfacial structure can weak the water intermolecular forces and pump water to the hydrophilic–hydrophobic junction. Within well-ordered nanochannels, the increased curvature of the meniscus increases the ratio of thin water layers, thereby enhancing microscale heat transfer at the heated walls; in addition, the smaller nanopores limit the development of microscale vortices at the liquid–gas interface and prevent back mixing of intermediate water at the interface, which possess the nanoscale effect on intensifying the interfacial evaporation. These effects are validated by theoretical and experimental studies. Optimized Janus (20 nm) 95°/25° structure exhibits evaporation fluxes up to 2.4 kg m −2 h −1 at 45 °C (feed side)/25 °C (permeate side, ambient pressure), as the theoretical evaporation enthalpy is only 30% of that for direct evaporation. The unique Janus structure simultaneously inhibits salt accumulation and achieve self-cleaning, thereby maintaining steady performance during 480 h of continuous desalination and 50 cycles of batch operation. This work highlights a promising structural design strategy for separation materials with specific micro/nanoscopic topologies to achieve high performance thermally driven desalination applications.
研究领域:
材料科学
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热能工程
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水处理技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Q.I. Ji,Congji ZHANG,Rui SONG,Muneerah Alomar,Tianze ZHANG,Yuxiang CHEN,Jiachang CUI,Shangzhen XIE,Zhiguang GUO
To meet the escalating global demand for water resources in arid regions, fog harvesting presents a promising solution especially in high-humidity regions. However, current collectors generally suffer from critical issues such as low droplet capture efficiency, difficulty in droplet retention and transportation, and poor cyclic stability. Inspired by the water-capturing abilities of bat tongues and cactus spines, a fog harvester with a folding fan structure and a spike array has been developed. These hierarchically structured surfaces, fabricated by laser etching, control wettability to capture and drive the unidirectional transport of water droplets. The spikes further allowed for the regulation of droplets to achieve transport along a Janus wettability gradient. Compared to a conventional flat aluminum sheet of the equivalent projected area, this device achieved a 403.58 % higher collection efficiency. It also exhibited remarkable cyclic stability, long-term water performance, and corrosion resistance, thereby demonstrating its potential for practical applications. This work provides an efficient strategy for sustainable fog collection.
研究领域:
环境科学
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材料科学
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仿生学
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表面工程
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可持续水资源技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2023
·
IF 17.1
Ying Wan,Huilong Liu,Zhengxing Chen,Chao Wu,Qixin Zhong,Ren Wang,Wei Feng,Xianfu Chen,Jinliang Zhang,Tao Wang,Zunmin Zhang,Bernard P. Binks
Construction of well-ordered two-dimensional (2D) and three-dimensional (3D) assemblies using one-dimensional (1D) units is a hallmark of many biointerfaces such as skin. Mimicking the art of difunctional properties of biointerfaces, which skin exhibits as defense and shelter materials, has inspired the development of smart and responsive biomimetic interfaces. However, programming the long-range ordering of 1D base materials toward vigorous control over 2D and 3D hierarchical structures and material properties remains a daunting challenge. In this study, we put forward construction of 3D enteric biomaterials with a two-strata 2D Janus interface assembled from self-adaptation of 1D protein–polysaccharide nanostructures at an oil–water interface. The biomaterials feature a protein dermis accommodating oil droplets as a reservoir for bioactive compounds and a polysaccharide epidermis protecting them from gastric degradation. Furthermore, the epidermis can be fine-tuned with different thicknesses rendering enteric delivery of a bioactive cargo (coumarin-6) with controllable retention in the intestinal tract from 6 to 24 h. The results highlight a skin-inspired construction of enteric biomaterials by self-adaptation of 1D nanostructures at the oil–water interface toward 2D Janus biointerfaces and 3D microdevices, which can be tailored for intestinal treatments with intentional therapeutic efficacies.
研究领域:
生物材料学
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纳米科学技术
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药物递送系统
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Soft Matter
·
2021
·Vol. 17
·期 41
·9363-9370
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IF 3.679
Haifeng Liu,Yifeng Sun,Zhonghui Chen
Hydrophobic/oleophilic sponges are excellent absorbent materials for oil contaminant removal. However, the application is limited in dealing with surfactant stabilized O/W emulsions. The water in the emulsion isolates the contact between the sponge and oil droplets. Consequently, the oil absorption efficiency is not ideal. Herein, to improve the oil absorption efficiency from anionic surfactant stabilized O/W emulsions, water responsive hybrid sponges were reported. To prepare such sponges, water soluble poly(N,N-dimethylaminoethylmethacrylate) (PDMAEMA) was introduced into polydimethylsiloxane (PDMS) sponges using table salt as a template and multi-walled carbon nanotubes (MWCNTs) as mechanical reinforcement in a one-pot method. Upon contact with an O/W emulsion, the water soluble PDMAEMA chain rose to the surface of the sponge, turning the hydrophobic surface into hydrophilic. Next, the tertiary amine groups in PDMAEMA ionized in water and carried positive charges which would cause the coagulation of oil droplets. Finally, the coagulated oil droplets were absorbed immediately by the oleophilic inner part of the sponge through the wicking effect. As a result, a Janus interface was generated in situ and sustained. Such material design synergistically contributed to a satisfactory hexadecane (HD) absorption efficiency of 178 ± 4% in 25 min. In contrast, the PDMS-MWCNT1.0% sponge could only absorb 9.8 ± 0.2% HD. Moreover, these sponges also presented robust mechanical performance and reusability, offering a new route for oil/water separation and oil pollution remediation in open water.
研究领域:
材料科学
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环境工程
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small
·
2023
·Vol. 19
·期 40
·2303012
·
IF 13.3
Li Xu,Xinyu Zhang,Liqian Huang,Jianyong Yu,Yang Si,Bin Ding
Bi 2 O 3 /rare earth oxide biphasic absorbers are attractive for high-efficiency X-ray shielding due to the complementary X-ray absorption effects. However, its application is severely hindered by poor interphasic contact. Here, a new Janus interface engineering strategy is reported for the construction of continuous and flexible Bi 2 O 3 /Gd 2 O 3 crystal nanofibrous membranes (FJNMs) with micro/nano dual self-strengthening interphasic adhesion. This strategy facilitates online micro-interlocking between Bi 2 O 3 /Gd 2 O 3 nanofibers and in situ nano-grain fusion between Bi 2 O 3 /Gd 2 O 3 crystals, significantly enhancing the adhesive strength at the Bi 2 O 3 /Gd 2 O 3 interface. Additionally, the synergistic shielding effect from Bi 2 O 3 /Gd 2 O 3 absorption and multiple reflections in Bi 2 O 3 and Gd 2 O 3 crystal lattices make the nanofibrous membranes a superior X-ray radiation barrier. The FJNMs demonstrate integrated features of exceptional X-ray shielding efficiency (91%–100%), robust interfacial adhesion (lap-shear strength >3.8 MPa), prominent flexibility, lightweight, and outstanding breathability. The design concepts of fibrosing biphasic absorber assemblies pave the way for asymmetrically assembling biphasic materials, setting the stage for a fundamental shift in next-generation radiation shielding materials.
研究领域:
材料科学
·
辐射屏蔽
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纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Silin Chen,Shunchao Ma,Zhenhua Liu,Yanan Li,Hongxing Yin,Huiyu Song,Min Zhang,Mingyang Xin,Liqun Sun,Yulong Liu,Haiming Xie,Lina Cong
Solid-state polymer electrolytes are outstanding candidates for next-generation lithium metal batteries in the realm of high specific energy densities , high safeties and tight contact with electrodes. However, their applications are still hindered by the limitations that no single polymer is electrochemically stable with the oxidizing high-voltage cathode and the highly reductive Li anode, simultaneously. Herein, a bilayer asymmetric polymer electrolyte (SL-SPE) without accessional interface resistance that using poly (ethylene glycol) diacrylate (PEGDA) as a “bridge” to connect the sulfonyl (O S = O)-contained oxidation-tolerated layer and polyether-derived reduction-tolerated layer (SPE), is proposed and synthesized by sequential two-step UV polymerizations. SL-SPE can provide widened electrochemical stability window up to 5 V, while simultaneously deploying a stable Janus interface property . Eventually, the superior high-voltage (4.4 V) cycling durability can be displayed in LiNi 0.6 Co 0.2 Mn 0.2 O 2 |SL-SPE|Li batteries . This finding provides a bran-new idea for designing multifunctional polymer electrolytes in the application of solid-state batteries.
研究领域:
材料科学
·
电化学
·
能源存储
·
电池技术
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Yujie Zhang,Xin He,Haomiao Li,Wenjie Zhao,Kangli Wang,Kai Jiang
Rechargeable magnesium battery is regarded as the promising candidate for the next generation of high-specific-energy storage systems. Nevertheless, issues related to severe Mg-Cl dissociation at the electrolyte–electrode interface impede the insertion of Mg 2+ into most materials, leading to severe polarization and low utilization of Mg-storage electrodes. In this study, a metal–organic polymer (MOP) Ni-TABQ (Ni-coordinated tetramino-benzoquinone) with superior surface catalytic activity is proposed to achieve the high-capacity Mg-MOP battery . The layered Ni-TABQ cathode, featuring a unique 2D π-d linear conjugated structure, effectively reduces the dissociation energy of Mg x Cl y clusters at the Janus interface, thereby facilitating Mg 2+ insertion. Due to the high utilization of active sites, Ni-TABQ achieves high capacities of 410 mAh/g at 200 mA g −1 , attributable to a four-electron redox process involving two redox centers, benzoid carbonyls, and imines . This research highlights the importance of surface electrochemical processes in rechargeable magnesium batteries and paves the way for future development in multivalent metal-ion batteries.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）