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Gao H, Zhao H, Chang S, Meng Z, Han Z, Liu Y. Multi-biomimetic Double Interlaced Wetting Janus Surface for Efficient Fog Collection. NANO LETTERS 2024; 24:7774-7782. [PMID: 38847520 DOI: 10.1021/acs.nanolett.4c01918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
Abstract
Various methods to solve water scarcity have attracted increasing attention. However, most existing water harvesting schemes have a high demand for preparation methods and costs. Here, a multi-biomimetic double interlaced wetting Janus surface (DIWJS) was prepared by laser for effective fog collection. The as-prepared surfaces are composed of superhydrophilic points/hydrophobic substrates on the A-side and superhydrophilic stripes/hydrophobic substrates on the B-side. The interlaced wettability and superhydrophilic points on the A side are conducive to capture and permeation of droplets. The superhydrophilic stripes and interlaced wettability on the B-side are conducive to transportation and shedding of droplets. Therefore, the overall fog collection process is accelerated. The proposal of smart farm model validates broad application prospects of DIWJS. This work provides an advanced and multi-biomimetic surface and provides important insights for green, low-cost, and versatile strategies to solve water scarcity issues.
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Affiliation(s)
- Hanpeng Gao
- School of Electrical Engineering, Yanshan University, Qinhuangdao 066004, P. R. China
| | - Haoyang Zhao
- School of Electrical Engineering, Yanshan University, Qinhuangdao 066004, P. R. China
| | - Siyu Chang
- School of Electrical Engineering, Yanshan University, Qinhuangdao 066004, P. R. China
| | - Zong Meng
- School of Electrical Engineering, Yanshan University, Qinhuangdao 066004, P. R. China
| | - Zhiwu Han
- Key Laboratory of Bionic Engineering (Ministry of Education), Jilin University, Changchun 130022, P. R. China
| | - Yan Liu
- Key Laboratory of Bionic Engineering (Ministry of Education), Jilin University, Changchun 130022, P. R. China
- Institute of Structured and Architected Materials, Liaoning Academy of Materials, Shenyang 110167, China
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Li M, Hu H, Zhang M, Ding H, Wen J, Xie L, Du P. Droplet Transportation on Liquid-Infused Asymmetrically Structured Surfaces by Mechanical Oscillation and Viscosity Control. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:16315-16327. [PMID: 37881899 DOI: 10.1021/acs.langmuir.3c01884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2023]
Abstract
The transportation of droplets on solid surfaces has received significant attention owing to its importance in biochemical analysis and microfluidics. In this study, we propose a novel strategy for controlling droplet motion by combining an asymmetric structure and infused lubricating oil on a vibrating substrate. The transportation of droplets with volumes ranging from 10 to 90 μL was realized, and the movement speed could be adjusted from 1.45 to 10.87 mm/s. Typical droplet manipulations, including droplet transportation along a long trajectory and selective movement of multiple droplets, were successfully demonstrated. Through experimental exploration and theoretical analysis, we showed that the adjustment of droplet transport velocity involves an intricate interaction among the Ohnesorge number, droplet volume, and input amplitude. It can potentially be used for the more complex manipulation of liquid droplets in microfluidic and biochemical analysis systems.
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Affiliation(s)
- Mingsheng Li
- School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China
| | - Haibao Hu
- School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen; Sanhang Science & Technology Buliding, No. 45th, Gaoxin South ninth Road, Nanshan District, Shenzhen City, 518063, China
| | - Mengzhuo Zhang
- School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China
| | - Haiyan Ding
- School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China
| | - Jun Wen
- School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China
| | - Luo Xie
- School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China
| | - Peng Du
- School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China
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Yang JL, Song YY, Zhang X, Zhang ZQ, Cheng GG, Liu Y, Lv GJ, Ding JN. Research progress of bionic fog collection surfaces based on special structures from natural organisms. RSC Adv 2023; 13:27839-27864. [PMID: 37731827 PMCID: PMC10508262 DOI: 10.1039/d3ra04253g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Accepted: 09/02/2023] [Indexed: 09/22/2023] Open
Abstract
With the increasing shortage of water resources, people are seeking more innovative ways to collect fog to meet the growing need for production and the demand for livelihood. It has been proven that fog collection is efficient for collecting water in dry but foggy areas. As a hot research topic in recent years, bionic surfaces with fog collection functions have attracted widespread attention in practical applications and basic research. By studying natural organisms and bionic surfaces, more avenues are provided for the development of fog collection devices. Firstly, starting from biological prototypes, this article explored the structural characteristics and fog collection mechanisms of natural organisms such as spider silk, desert beetles, cactus, Nepenthes and other animals and plants (Sarracenia, shorebird and wheat awn), revealing the fog collection mechanism of the natural organisms based on microstructures. Secondly, based on the theory of interfacial tension, we would delve into the fog collection function's theoretical basis and wetting model, expounding the fog collection mechanism from a theoretical perspective. Thirdly, a detailed introduction was given to prepare bionic surfaces and recently explore fog collection devices. For bionic surfaces of a single biological prototype, the fog collection efficiency is about 2000-4000 mg cm-2 h-1. For bionic surfaces of multiple biological prototypes, the fog collection efficiency reaches 7000 mg cm-2 h-1. Finally, a critical analysis was conducted on the current challenges and future developments, aiming to promote the next generation of fog collection devices from a scientific perspective from research to practical applications.
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Affiliation(s)
- Jia-Lei Yang
- School of Mechanical Engineering, Jiangsu University Zhenjiang 212013 Jiangsu P. R. China
| | - Yun-Yun Song
- School of Mechanical Engineering, Jiangsu University Zhenjiang 212013 Jiangsu P. R. China
| | - Xu Zhang
- School of Mechanical Engineering, Jiangsu University Zhenjiang 212013 Jiangsu P. R. China
| | - Zhong-Qiang Zhang
- School of Mechanical Engineering, Jiangsu University Zhenjiang 212013 Jiangsu P. R. China
| | - Guang-Gui Cheng
- School of Mechanical Engineering, Jiangsu University Zhenjiang 212013 Jiangsu P. R. China
| | - Yan Liu
- Key Laboratory of Bionic Engineering (Ministry of Education), Jilin University Changchun 130022 P. R. China
| | - Guo-Jun Lv
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology Zhenjiang 212003 P. R. China
| | - Jian-Ning Ding
- School of Mechanical Engineering, Jiangsu University Zhenjiang 212013 Jiangsu P. R. China
- School of Mechanical Engineering, Yangzhou University Yangzhou 225127 Jiangsu P. R. China
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Zhang J, Peng K, Xu ZK, Xiong Y, Liu J, Cai C, Huang X. A comprehensive review on the behavior and evolution of oil droplets during oil/water separation by membranes. Adv Colloid Interface Sci 2023; 319:102971. [PMID: 37562248 DOI: 10.1016/j.cis.2023.102971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 07/01/2023] [Accepted: 07/31/2023] [Indexed: 08/12/2023]
Abstract
Membrane separation technology has significant advantages for treating oil-in-water emulsions. Understanding the evolution of oil droplets could reveal the interfacial and colloidal interactions, facilitate the design of advanced membranes, and improve the separation performances. This review on the characteristic behavior and evolution of oil droplets focuses on the advanced analytical techniques, and the subsequent fouling as well as demulsification effects during membrane separation. A detailed introduction is provided on microscopic observations and numerical simulations of the dynamic evolution of oil droplets, featuring real-time in-situ visualization and accurate reconstruction, respectively. Characteristic behaviors of these oil droplets include attachment, pinning, wetting, spreading, blockage, intrusion, coalescence, and detachment, which have been quantified by specific proposed parameters and criteria. The fouling process can be evaluated using Hermia and resistance models. The related adhesion force and intrusion pressure as well as droplet-droplet/membrane interfacial interactions can be accurately quantified using various force analysis methods and advanced force measurement techniques. It is encouraging to note that oil coalescence has been achieved through various effects such as electrostatic interactions, mechanical actions, Laplace pressure/surface free energy gradients, and synergistic effects on functional membranes. When oil droplets become destabilized and coalesce into larger ones, the functional membranes can overcome the limitations of size-sieving effect to attain higher separation efficiency. This not only bypasses the trade-off between permeability and rejection, but also significantly reduces membrane fouling. Finally, the challenges and potential research directions in membrane separation are proposed. We hope this review will support the engineering of advanced materials for oil/water separation and research on interface science in general.
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Affiliation(s)
- Jialu Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, Ministry of Education Key Laboratory of Yangtze River Water Environment, Shanghai Institute of Pollution Control and Ecological Security, College of Environmental Science and Engineering, Tongji University, No.1239 Siping Road, Shanghai 200092, PR China
| | - Kaiming Peng
- State Key Laboratory of Pollution Control and Resource Reuse, Ministry of Education Key Laboratory of Yangtze River Water Environment, Shanghai Institute of Pollution Control and Ecological Security, College of Environmental Science and Engineering, Tongji University, No.1239 Siping Road, Shanghai 200092, PR China; Institute of Carbon Neutrality, Tongji University, No.1239 Siping Road, Shanghai 200092, PR China.
| | - Zhi-Kang Xu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, and Key Lab of Adsorption and Separation Materials & Technologies of Zhejiang Province, Department of Polymer Science and Engineering, Zhejiang University, No.38 Zheda Road, Hangzhou 310027, PR China
| | - Yongjiao Xiong
- State Key Laboratory of Pollution Control and Resource Reuse, Ministry of Education Key Laboratory of Yangtze River Water Environment, Shanghai Institute of Pollution Control and Ecological Security, College of Environmental Science and Engineering, Tongji University, No.1239 Siping Road, Shanghai 200092, PR China
| | - Jia Liu
- State Key Laboratory of Pollution Control and Resource Reuse, Ministry of Education Key Laboratory of Yangtze River Water Environment, Shanghai Institute of Pollution Control and Ecological Security, College of Environmental Science and Engineering, Tongji University, No.1239 Siping Road, Shanghai 200092, PR China; Institute of Carbon Neutrality, Tongji University, No.1239 Siping Road, Shanghai 200092, PR China
| | - Chen Cai
- State Key Laboratory of Pollution Control and Resource Reuse, Ministry of Education Key Laboratory of Yangtze River Water Environment, Shanghai Institute of Pollution Control and Ecological Security, College of Environmental Science and Engineering, Tongji University, No.1239 Siping Road, Shanghai 200092, PR China; Institute of Carbon Neutrality, Tongji University, No.1239 Siping Road, Shanghai 200092, PR China
| | - Xiangfeng Huang
- State Key Laboratory of Pollution Control and Resource Reuse, Ministry of Education Key Laboratory of Yangtze River Water Environment, Shanghai Institute of Pollution Control and Ecological Security, College of Environmental Science and Engineering, Tongji University, No.1239 Siping Road, Shanghai 200092, PR China; Institute of Carbon Neutrality, Tongji University, No.1239 Siping Road, Shanghai 200092, PR China.
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Song YY, Zhang X, Yang JL, Zhang ZQ, Cheng GG, Liu Y, Lv GJ, Yu ZP. Ultrafast sorption of micro-oil droplets within water by superhydrophobic-superoleophilic conical micro-arrays. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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Pragya A, Ghosh TK. Soft Functionally Gradient Materials and Structures - Natural and Manmade: A Review. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023:e2300912. [PMID: 37031358 DOI: 10.1002/adma.202300912] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 03/31/2023] [Indexed: 06/19/2023]
Abstract
Functionally gradient materials (FGM) have gradual variations in their properties along one or more dimensions due to local compositional or structural distinctions by design. Traditionally, hard materials (e.g., metals, ceramics) are used to design and fabricate FGMs; however, there is increasing interest in polymer-based soft and compliant FGMs mainly because of their potential application in the human environment. Soft FGMs are ideally suitable to manage interfacial problems in dissimilar materials used in many emerging devices and systems for human interaction, such as soft robotics and electronic textiles and beyond. Soft systems are ubiquitous in everyday lives; they are resilient and can easily deform, absorb energy, and adapt to changing environments. Here, the basic design and functional principles of biological FGMs and their manmade counterparts are discussed using representative examples. The remarkable multifunctional properties of natural FGMs resulting from their sophisticated hierarchical structures, built from a relatively limited choice of materials, offer a rich source of new design paradigms and manufacturing strategies for manmade materials and systems for emerging technological needs. Finally, the challenges and potential pathways are highlighted to leverage soft materials' facile processability and unique properties toward functional FGMs.
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Affiliation(s)
- Akanksha Pragya
- Department of Textile Engineering Chemistry and Science, Fiber, and Polymer Science Program, Wilson College of Textiles, North Carolina State University, North Carolina State University, 1020 Main Campus Drive, Raleigh, NC, 27606, USA
| | - Tushar K Ghosh
- Department of Textile Engineering Chemistry and Science, Fiber, and Polymer Science Program, Wilson College of Textiles, North Carolina State University, North Carolina State University, 1020 Main Campus Drive, Raleigh, NC, 27606, USA
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Guo Y, Li Y, Zhao G, Zhang Y, Pan G, Yu H, Zhao M, Tang G, Liu Y. Patterned Hybrid Wettability Surfaces for Fog Harvesting. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:4642-4650. [PMID: 36951792 DOI: 10.1021/acs.langmuir.2c03432] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The scarcity of fresh water resources has become increasingly serious in recent years, posing threats to the survival of mankind. The ability of the animals and plants in arid areas to collect water from moisture and fog has drawn attention worldwide. Inspired by the synergistic fog harvesting mode of natural organisms with superhydrophilic and superhydrophobic patterning, a composite membrane with a concave-convex morphology and hybrid wettability was prepared aiming at efficient fog harvesting. The hybrid wettability surface was obtained by chemically modifying the superhydrophilic PAN substrate with 1H,1H,2H,2H-perfluorooctyltrichlorosilane using iron mesh as the mask. The porous PAN substrate was prepared by the non-solvent-induced phase separation (NIPS) method. Fog harvesting is a three-step process: condensation, coalescence, and rapid transportation of water droplets. The area and ratio of the hydrophilic/hydrophobic regions were tuned by adjusting the mesh number of the iron meshes. Under the optimal condition, the fog harvesting efficiencies of 40.3 and 74.2 mg·cm-2·min-1 were obtained when the fog yields were 0.05 and 0.1 L·min-1, respectively. The present work provides an alternative strategy for addressing the shortage of fresh water resources.
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Affiliation(s)
- Ying Guo
- SINOPEC Beijing Research Institute of Chemical Industry, Beijing 100013, China
| | - Yu Li
- SINOPEC Beijing Research Institute of Chemical Industry, Beijing 100013, China
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Guoke Zhao
- SINOPEC Beijing Research Institute of Chemical Industry, Beijing 100013, China
| | - Yang Zhang
- SINOPEC Beijing Research Institute of Chemical Industry, Beijing 100013, China
| | - Guoyuan Pan
- SINOPEC Beijing Research Institute of Chemical Industry, Beijing 100013, China
| | - Hao Yu
- SINOPEC Beijing Research Institute of Chemical Industry, Beijing 100013, China
| | - Muhua Zhao
- SINOPEC Beijing Research Institute of Chemical Industry, Beijing 100013, China
| | - Gongqing Tang
- SINOPEC Beijing Research Institute of Chemical Industry, Beijing 100013, China
| | - Yiqun Liu
- SINOPEC Beijing Research Institute of Chemical Industry, Beijing 100013, China
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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Wang Z, Li H, Yang X, Guan M, Wang L. Multi-Bioinspired Janus Copper Mesh for Improved Gravity-Irrelevant Directional Water Droplet and Flow Transport. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:2137-2144. [PMID: 35108022 DOI: 10.1021/acs.langmuir.1c03267] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
A conceptually novel multi-bioinspired strategy based on structures and functions derived from the Namib desert beetle and lotus leaf is proposed in this paper. The proposed scheme synergistically combines the features of alternating wettability patterns and asymmetric wettability for improved directional water transport. Consequently, a Janus copper mesh, which substantially outperforms other single-bioinspired synthetic materials, is produced. The Janus copper mesh achieves directional self-transportation of tiny water droplets and continuous water flow in a gravity-irrelevant or an anti-gravity manner without energy consumption. This depends on the asymmetric wettability and alternating hydrophobic-hydrophilic wettability patterns on the hydrophobic surface of the mesh. In particular, Janus copper shows remarkable selective directional water transport in a water-oil system, rendering it a promising candidate for practical applications.
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Affiliation(s)
- Zhecun Wang
- College of Materials Science and Engineering, Liaoning Technical University, Fuxin 123000, P. R. China
| | - Hanzhen Li
- College of Materials Science and Engineering, Liaoning Technical University, Fuxin 123000, P. R. China
| | - Xin Yang
- College of Materials Science and Engineering, Liaoning Technical University, Fuxin 123000, P. R. China
| | - Min Guan
- College of Materials Science and Engineering, Liaoning Technical University, Fuxin 123000, P. R. China
| | - Laigui Wang
- School of Mechanics and Engineering, Liaoning Technical University, Fuxin 123000, P. R. China
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