CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Zhe Qiu,Fanjun Yu,Dan Xu,Zengbin Wang,Junya Huang,Shuo Wang,Yanxiao Yang,Yonggui Wang,Jian Li,Zefang Xiao,Yanjun Xie,Kai Zhang
Water-transport based on biomimetic self-propelled directional water transport materials have attracted wide attention but are limited by low transport speed, costly and complicated preparation, and scaling difficulty. By retaining native cellulose microfibril structure within wood cell walls and their controlled shrinkage, we constructed a self-propelling directionally water transporting wood (SDTW) by reshaping the cell wall to generate robust capillary forces due to aligned longitudinal hierarchical wood cell structures. Hierarchical structures containing directional parallel macro- and micro-sized ridge-groove structures and creating nano-voids are fabricated. They are further intactly fixed after reaction with maleic anhydride to improve the dimensional stability and environmental durability without changing the hydrophilicity on surface. Resulting SDTW exhibited an ultrafast water transport speed of 200.4 mm/s (∼260 % of Nepenthes alata showing a fast speed of 78 mm/s as a native structure) and water absorbing rate of 1.15 × 10 5 L/m 2 /h (over 4200-fold higher than that of natural wood). With these ultrafast water transport characters, SDTW was used as water manipulating systems for fast bottom to up transportation of liquid water at a rate of 193.5 mm/s, and as high fog harvesting system with an efficiency of 10.6 g/cm 2 /h. With its facility, durability, scalability, and sustainability, the SDTW demonstrates a new class of sustainable wood-based materials for practical water manipulation applications.
研究领域:
材料科学
·
仿生学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2018
·
IF 3.927
Atian Xie,Jiuyun Cui,Yangyang Chen,Jihui Lang,Chunxiang Li,Yongsheng Yan,Jiangdong Dai
To better circumvent the issues of oil spills and industrial organic pollutants, it is urgent and necessary to develop advanced material or technology that can efficiently separate oil/water mixture. Herein, no matter light or heavy oil/water mixtures are separated successfully by a straight tee system combining two opposite superwetting meshes. The combined system shows a high flux (above 0.22 × 10 5 L m −2 h −1 ), high efficiency (above 99.3%) for continuous light or heavy oil/water separation with good durability. Importantly, the superhydrophilic and superhydrophobic meshes can be easily obtained via facile, viable electroless galvanic replacement reaction followed post surface modification strategy. Additionally, the capillary action was used to clarify mechanism of oil/water separation to gain insight into oil/water separation process. The merits of high flux, high efficiency, viable for light/heavy oil and durability make this separation system a powerful tool for practical application in continuous oil/water separation.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2020
·
IF 3.408
Junbo Liu,Huilong Liu,Na Lin,Yingxi Xie,Shigen Bai,Zhiran Lin,Longsheng Lu,Yong Tang
This study demonstrated a facile method to fabricate super-hydrophilic 3D porous graphene with high capillary force and ultra-fast spreading characteristic by direct laser writing on KMnO 4 -coated polyimide (PI) films. Highly oxidized laser-induced graphene (OLIG) was obtained with dominated sp 2 carbon referring from Raman spectroscopy and X-ray diffraction. In addition, abundant oxygen functional groups and a 3D porous scaffold structure with foam-like flakes were produced based on the results of X-ray photoelectron pattern and scanning electron microscopy. OLIG showed ultra-fast spreading properties that water drops can spread completely within dozens of milliseconds. The morphology and chemical composition also render the new material with good capillary effect. The capillary rate-of-rise test with IR camera demonstrated that the wetted height of OLIG strip can reach around 16 mm within 5 min.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
MATERIALS & DESIGN
·
2025
·
IF 7.9
Zhengda Chen,Xiangjun Zha,Cheng Wen,Kun Li,Jigang Huang,Wei Pu
Multi-material objects offer enhanced functionality by strategic integration of different materials, allowing tailored properties to meet specific performance requirements. Digital light processing (DLP) 3D printing, featuring high resolution and fast speed, has emerged as a leading method for creating single-material structures. However, it faces significant limitations when producing multi-material objects in the traditional layer-by-layer matter, as the approach requires frequent material switching, making the process prohibitively time-consuming. To address this challenge, we present a capillarity assisted multi-material 3D printing (CMM-3DP) method that leverages capillary pressure to generate multi-material objects block by block. This innovative approach achieves printing speeds with over a hundred times faster than the current multi-material DLP 3D printing. CMM-3DP demonstrates remarkable versatility, accommodating not only photosensitive materials such as hydrogels, polymers, and elastomers but also thermal curable resins and liquid metals—materials previously incompatible with conventional DLP 3D printing. By eliminating the layer-by-layer material switching process, CMM-3DP allows multi-material objects to be fabricated while avoiding both intricate motion system and resin contamination issue. Using a body centered cubic (BCC) array as the capillary structure, our research demonstrates that CMM-3DP can successfully create multi-material architectures ranging from micrometer to centimeter scale. Moreover, the versatility of CMM-3DP is validated by successful fabrication of various applications, including stimuli-responsive objects, flexible actuator, electric circuit, and biomimetic human hand. Our method substantially enhances the multi-material fabrication capability of DLP 3D printing, facilitating potential applications with multi-material devices.
研究领域:
生物医学工程
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材料科学
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先进制造技术
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微纳加工
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仿生结构
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Juan Wang,Mingwang Pan,Jinfeng Yuan,Gang Liu,Lei Zhu
The current syntheses of spheres-on-sphere (SOS) microsphere, which possesses both hollow cavity and hierarchical structure, mainly rely on complicated routes and template removal. In this study, a one pot nanoengineering strategy inspired by the automatic transport behavior of water in plants is successfully developed to fabricate SOS microsphere in tandem with a traditional soft template method in the preparation of hollow structure. Amphiphilic siloxane oligomers generated in situ from methyltriethoxylsilane (MTES) under acidic conditions are anchored on the surface of soft template St monomer droplets, sequentially completing hydrolysis-polycondensation and forming a mesoporous polysilsesquioxane (PSQ) shell. Then, the St monomers located in cavity migrate outward under the combined action of capillary force stemming from mesoporous and osmotic pressure generating from inside–outside of the PSQ shell and polymerize on the outside of the hollow PSQ shell, in which residual siloxane oligomers further anchor on the polystyrene (PS) surface to reduce the surface energy of the system, finally resulting in the successful formation of SOS particles. To reduce thermal insulation coefficient of the material, the PS phase in SOS particles is removed to obtain the particles with multiscale hollow structure (SOS-MH), which have more hollow cavities to encapsulate more air. The presence of a much hollow structure in SOS-MH particles enables the thermal conductivity of polyacrylonitrile (PAN)/SOS-MH composite fibrous membranes (0.0307 W m–1 K–1) to decrease by about 40% compared to that of pure PAN fibrous films (0.0520 W m–1 K–1) at the same thickness of 1 mm, and the material also has moisture resistance due to the existence of a hierarchical shell.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2024
·
IF 3.8
Qiang Jiang,Yu Shi,Yichao An,Liang Zhang,Jun Li,Xun Zhu,Qiang Liao
The all-aqueous thermally regenerative battery has the advantages of high open-circuit voltage, high power density, and high Coulombic efficiency, providing a promising way for low-temperature waste heat recovery. In this study, a passive membraneless thermally regenerative flow battery driven by capillary force and gravity is proposed to reduce the cost of construction and operation. The feasibility of power generation and the influence of key parameters (height difference, support electrolyte concentration, etc.) on the battery performance are studied. The results showed that a laminar flow induced by a fiber-based microfluidic reactor could effectively separate the catholytes and anolytes, and the battery could achieve long-term power production and obtain a maximum power density of 15.2 mW cm–2. The performance of the battery first increased and then decreased with the inlet height, and the optimal height was 3 mm. This is mainly due to the fact that the inlet height affects the flow rate of the electrolyte, which affects the mass transfer and laminar flow effect in the porous electrode. Within a certain range, as the concentration of the supporting electrolyte increases, the conductivity of the electrolyte is significantly improved, although the flow rate decreases to a certain extent due to the increase in viscosity, resulting in a further improvement in the battery performance. Through the above optimization, the maximum power density of the battery obtained in this study is 24.9 mW cm–2, and the maximum theoretical thermal efficiency can reach 1.26% (the relative Carnot efficiency can reach 10.6%).
研究领域:
能源科学
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环境工程
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED THERMAL ENGINEERING
·
2023
·
IF 6.4
Jingrui Lan,Wenpeng Hong,Yuan Chang,Changyuan Dong,Haoran Li
Solar-driven interfacial evaporation offers a potential solution to address global freshwater scarcity. However, the water-thermal-vapor-salt imbalance issue severely affects the operating efficiency of the evaporator. This research examines the correlation among water supply height, spontaneous wicking rate, and interfacial water content. Subsequently, an engineering strategy is proposed to control the water concentration gradient within a two-dimensional solar absorber with vertical water supply channels. The results demonstrate that the hydrophilicity and internal structure of the material exert a crucial influence on the transport of bulk water. Specifically, longitudinal stripes within the water-conducting material promote a faster wicking rate and higher wicking height. This phenomenon occurs due to the combined effects of capillary forces and gravity, leading to a gradual decrease in liquid saturation along the capillary direction within the water-conducting material. By optimizing the water supply height and rate, the evaporation interface achieves a remarkable water evaporation rate of 1.50 kg m −2 h −1 . Building on this success, a novel configuration for a flow desalination evaporator is proposed, capable of sustaining the same evaporation rate even when operating continuously for 9 h in saltwater with a mass concentration of 20 %. Overall, this study emphasizes the importance of water and heat balance at the evaporative interface, reconciling conflicting requirements of interface flow and evaporation rate. These findings contribute to the development of highly efficient and reliable evaporators for sustainable freshwater generation.
研究领域:
材料科学
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环境科学
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能源工程
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2023
·Vol. 19
·期 41
·2302339
·
IF 13.3
Lizhong Wang,Guochen Jiang,Dongyu Zhu,Ze Tian,Changhao Chen,Xinyu Hu,Rui Peng,Daizhou Li,Hongjun Zhang,Huanyu Zhao,Peixun Fan,Minlin Zhong
Liquid fluidity is a most key prerequisite for a broad range of technologies, from energy, fluid machineries, microfluidic devices, water, and oil transportation to bio-deliveries. While from thermodynamics, the liquid fluidity gradually diminishes as temperature decreases until completely solidified below icing points. Here, self-driven droplet motions are discovered and demonstrated occurring in icing environments and accelerating with both moving distances and droplet volumes. The self-driven motions, including self-depinning and continuous wriggling, require no surface pre-preparation or energy input but are triggered by the overpressure spontaneously established during icing and then continuously accelerated by capillary pulling of frosts. Such self-driven motions are generic to a broad class of liquid types, volumes, and numbers on various micro-nanostructured surfaces and can be facilely manipulated by introducing pressure gradients spontaneously or externally. The discovery and control of self-driven motions below icing points can greatly broaden liquid-related applications in icing environments.
研究领域:
材料科学
·
物理化学
·
微流体技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Foods
·
2023
·Vol. 12
·期 9
·1857
·
IF 5.2
Ruoting Liu,Wenrui Chi,Qihao Zhu,Hailan Jin,Jian Li,Lijuan Wang
A cellulose-based matrix for monitoring milk freshness (MF) was produced from rice straw particles (RSPs) in a 0.125–0.150 mm that was bis-quaternized to attach bromocresol purple (BP) as a sensor. Under alkali conditions, the obstinate structure of the rice straw had opened, thereby improving the accessibility of the cellulose. Bis-quaternization created more adsorption sites for BP. The maximum adsorption capacity was 97.68 mg/g. The sensors were interwoven with cellulosic fibers to form the cellulose-based label with a relatively loose three-dimensional structure via hydrogen bonds. As the proportion of BP-BCRPs was increased from 10% to 40%, the air permeability of the label increased from 3.76 to 15.01 mm/s, which increased the response to the tested gases (10.12 s for 1 mL of acetic acid). The intelligent label exhibited excellent sensitivity at pH values of 3–9 with highly saturated color changes. During the storage period, the label color shifted from blue-purple to yellow as acidity was increased from 17.24 to 19.8 °T due to capillarity action, providing a timely warning to consumers. The prepared colorimetric porous intelligent cellulose-based label is suitable for monitoring of MF.Keywords:bis-quaternary ammonium salt;porous cellulose-based label;capillarity;pH sensitivity;milk freshness
研究领域:
食品科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2024
·
IF 3.8
Chengfei Deng,Wei Zhou,Yufeng Li,Menghao Lin,Lichun Dong,Cailong Zhou
Fog harvesting is a promising technique to obtain fresh water in arid climates. Through a combination of the template method and the photocuring technique, we effectively crafted cactus-inspired structures on a copper mesh to enhance the coalescence and transport of droplets. The spacing of the needle array can be readily customized by altering the quantity of holes in the photomask. Simultaneously, the wettability of both the mesh and the conical needles can be modified through a straightforward surface treatment. The cactus-inspired superwetting meshes could be used as an effective fog collector. Droplets on a superhydrophilic copper mesh with a superhydrophilic needle array (HICM-NA) can swiftly and directly migrate due to Laplace pressure induced by the shape gradient and capillary forces stemming from the groove structure on the needles. The depth of the groove progressively grows from the needle tip toward the root, leading to a gradual amplification of the capillary force on the droplet as it traverses the surface. In addition, HICM-NA adopts a mode of liquid film transmission, which can reduce the friction resistance during transportation. The water collection efficiency of HICM-NA is as high as 17.7 kg h–1 m–2. However, a superhydrophobic copper mesh with a hydrophilic needle array (HOCM-NA) has a high barrier between the mesh and the needle, suppressing the transport of droplets.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
ENERGY
·
2024
·
IF 9
Wenpeng Hong,Yuhan Mu,Jingrui Lan,Xu Jin,Xinzhi Wang,Haoran Li
The photovoltaic conversion efficiency of solar cells is significantly constrained by temperature rise. Photovoltaic membrane distillation (PVMD) offers a promising solution for simultaneous solar cell cooling and clean water production. However, the present PVMD system is confronted with the challenge of attaining high cooling efficiency and water production sans reliance on fossil fuels . In this work, a novel and zero-carbon PVMD system is introduced and optimized. One notable improvement is the transportation of feedwater to the backside of the solar cell using capillarity instead of a pumping system. Additionally, a porous copper foam condenser with a rough surface is introduced to the PVMD system. This rough surface creates more nucleation sites for rapid vapor condensation, resulting in a water productivity increase from 0.23 to 0.43 kg m −2 h −1 under 1 sun (=1 kW m −2 ) irradiation. Furthermore, a 5 cm × 5 cm solar cell demonstrates a temperature decrease from 59.9 to 38.3 °C, accompanied by a voltage enhancement from 2.18 to 2.39 V. This work offers an effective strategy for lowering the operational temperature of solar cells and enhancing the overall utilization efficiency of PVMD devices.
研究领域:
环境科学
·
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2024
·
IF 10.7
Tianjie Wu,Pufan Yang,Xintong Xie,Xi Cao,Yujun Deng,Xianting Ding,Zhinan Zhang
Sweat contains abundant physiological and metabolic data to evaluate an individual's physical health. Since the non-exercise sweat secretion rate is low, with an average value of 1–10 μl h −1 cm −2 , sweat is generally collected during exercise for existing wearable sweat sensors. To expand their applications to include daily scenarios, these sensors developed for sports and fitness are challenged by the difficulty of collecting trace amounts of sweat. This study proposes a wearable patch inspired by the hierarchical structure of Sarracenia trichomes, allowing for the spontaneous and fast collection of a small amount of secreted sweat. The patch contains microfluidic channels featuring a 20 μm-wide rib structure, fully utilizing the capillary force , thereby eliminating the issue of sweat hysteresis. Furthermore, with only 0.5 μl of the sweat secreted at the collection site, it can converge on the detection medium located within the center reservoir. Volunteer verification demonstrated a twofold increase in sweat collection efficiency compared to traditional wearable patches. This patch serves as an efficient sweat-collection configuration, promising potential for diverse in situ sweat colorimetric analyses.
研究领域:
生物医学工程
·
可穿戴传感器
·
微流控技术
·
生理监测
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）