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Zhang Y, Li L, He Y, Zhang H, Li S, Guo Z. Efficient direction-independent 3D spiral fog collector. MATERIALS HORIZONS 2025. [PMID: 40162481 DOI: 10.1039/d5mh00158g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/02/2025]
Abstract
Inspired by the natural structures of cacti and desert beetles, a novel three-dimensional (3D) high-efficiency fog collector is proposed. This design integrates a unique macro-structural configuration with a surface wettability gradient that remains independent of the fog flow direction. The fog collector adopts an integral spiral structure, with superhydrophilic triangular protrusions uniformly distributed across its surface. Under optimized design conditions, with a folding angle of 60 degrees, the collector features 23 superhydrophilic protrusions, each measuring 2.5 × 5 mm. Under these conditions, the fog collection efficiency reaches 0.5057 g cm-2 min-1. Furthermore, to assess the practical feasibility of the fog collector, a series of experiments, including sand impact and chemical resistance tests, were conducted. The experimental results show that the contact angle of the fog collector's surface remains high, indicating its excellent stability and durability. The fog collector not only uses a low-cost aluminum plate as the base material but also incorporates a simple and efficient preparation process, significantly enhancing its design feasibility and practicality. The results presented in this study offer a novel approach to designing high-efficiency fog collectors that are unaffected by the direction of fog flow.
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Affiliation(s)
- Yihang Zhang
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, Hubei University, Wuhan 430062, China
| | - Liubin Li
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, Hubei University, Wuhan 430062, China
| | - Yuxuan He
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, Hubei University, Wuhan 430062, China
| | - Huayang Zhang
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, Hubei University, Wuhan 430062, China
| | - Shanpeng Li
- College of Engineering, Lishui University, Lishui 323000, People's Republic of China
| | - Zhiguang Guo
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, Hubei University, Wuhan 430062, China
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
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Lin Z, Zhang D, Liu Y, Zhang Z, Zhao Z, Shao B, Wu R, Fang R, Yao J. CO 2/CH 4 separation performance of SiO 2/PES composite membrane prepared by gas phase hydrolysis and grafting coating in gas-liquid membrane contactor: A comparative study. Heliyon 2023; 9:e18760. [PMID: 37560639 PMCID: PMC10407752 DOI: 10.1016/j.heliyon.2023.e18760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 07/25/2023] [Accepted: 07/26/2023] [Indexed: 08/11/2023] Open
Abstract
The gas-liquid membrane contactor (GLMC) is a new and promising kind of gas separation technique, but still exhibits limitations, especially in membrane performance. In order to solve the above problems, we fabricated and characterized novel OH/SiO2/PES composite membranes using gas phase hydrolysis and graft coating methods, respectively. In the preparation process, whether to use alkali to pretreat the membrane was used as an evaluation index. The CO2/CH4 separation performance was tested using the modified OH/SiO2/PES hollow fiber membrane as the membrane contactor in GLMC. In the experiment, we conducted a single factor experiment with diethanolamine (DEA) as the adsorbent to analyze the effect of the flow rate and concentration of DEA on the separation of CO2/CH4. The collected gas had a CH4 content of 99.92% and a CO2 flux of 10.1059 × 10-3 mol m-2 s-1 while DEA at a concentration of 1 mol/L was flowing at a rate of 16 L/h. The highest separation factor occurred at this moment, which was 833.67. Overall, the CO2/CH4 separation performance in GLMC was enhanced with the use of the fluorinated OH/SiO2/PES composite membrane.
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Affiliation(s)
- Zhengda Lin
- School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Dandan Zhang
- Harbin Institute of Technology Hospital, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Yijun Liu
- School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Zhongming Zhang
- School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Zhiying Zhao
- School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Bo Shao
- School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Rui Wu
- Guangdong Yuehai Water Investment Co., Ltd., Shenzhen, 518021, PR China
| | - Rui Fang
- Harbin Institute of Technology National Engineering Research Center of Urban Water Resources Co.,Ltd., No.73, Huanghe Road, Nangang Dist, Harbin, 150090, PR China
| | - Jie Yao
- School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
- Harbin Institute of Technology National Engineering Research Center of Urban Water Resources Co.,Ltd., No.73, Huanghe Road, Nangang Dist, Harbin, 150090, PR China
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Lin Z, Liu Y, Zhang Z, Wu R, Fang R, Zhao Z, Shao B, Yao J. Preparation of OH/TiO2/PES Composite Membrane by a Novel Gas-Phase Hydrolysis Method in Gas-Liquid Membrane Contactor to Improve the Separation Efficiency of CO2 and CH4. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Li C, Xiong Y, Zhao L, Wan H, Li J, Fang S, Wang M, Duan M, Ren J, Xiao Y. Investigation of Oil-Water Separation on an F-SiO 2/TiO 2-Based Superhydrophobic/Superoleophilic Surface: Experiment Evaluation and MD Simulation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:1694-1708. [PMID: 36649094 DOI: 10.1021/acs.langmuir.2c03439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Experiment evaluation and mechanism analysis of separation performance are crucial for oily wastewater treatment. In this work, a fluorinated superhydrophobic/superoleophilic (F-SHPB/SOPL) surface was fabricated on a steel mesh substrate by double depositions of SiO2-TiO2 nanoparticles for high-roughness improvement and composite modification of fluorine-alkyl groups for low-energy achievement. Measurements of SEM, XPS, FTIR, laser scanning confocal microscope (LSCM), and excitation-emission matrix (EEM) were carried out for surface property characterization. The oil-water separation performances at the prepared F-SHPB/SOPL surface were investigated from experimental and simulation aspects. Separation tests, flux tests, and anti-contamination tests were performed by experimental methods. The results indicated that the surface showed excellent separation efficiencies (>99.2%) for oil-water mixture and oil-in-water emulsion, high permeate flux (>3000 L·m-2·h-1) for organic oils, and perfect anti-pollution/self-cleaning capacity for liquid and solid contaminations. The interaction energies and interaction distances were measured by ab initio molecular dynamics simulation (AIMD) simulations. With lower interaction energy (Eoil = -456.52∼-1044.22 eV) than that of water molecules (Ewater = -172.73 eV) and shorter distance (Doil = 4.42∼5.13 Å) than that of water molecules (Dwater = 11.49 Å), oil molecules showed higher interaction stability than water molecules on the F-SHPB/SOPL surface. The calculation revealed the essence of the oil-water separation phenomenon. This work not only proposes the fabrication methodology of the SHPB/SOPL material but also elucidates the intermolecular interaction for oil-water separation. The results can provide a fundamental basis for separation operation and removal treatment in industrial and domestic applications.
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Affiliation(s)
- Chen Li
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu610500, China
| | - Yan Xiong
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu610500, China
- Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province, Southwest Petroleum University, Chengdu610500, China
| | - Lei Zhao
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu610500, China
| | - Haiqin Wan
- State Key Laboratory of Pollution Control and Resource Reuse, Jiangsu Key Laboratory of Vehicle Emissions Control, School of the Environment, Nanjing University, Nanjing210023, PR China
| | - Jun Li
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu610500, China
| | - Shenwen Fang
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu610500, China
| | - Meng Wang
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu610500, China
| | - Ming Duan
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu610500, China
| | - Jintian Ren
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu610500, China
| | - Yi Xiao
- School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu610500, China
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Constructing superhydrophobic surface of PES/PES-SiO2 mixed matrix membrane contactors for efficient SO2 capture. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.118222] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Xu P, Jin Z, Zhang T, Chen X, Qiu M, Fan Y. Fabrication of a Ceramic Membrane with Antifouling PTFE Coating for Gas-Absorption Desulfurization. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c00338] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Peng Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing 211816, P. R. China
| | - Zhihao Jin
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing 211816, P. R. China
| | - Tianyu Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing 211816, P. R. China
| | - Xianfu Chen
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing 211816, P. R. China
| | - Minghui Qiu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing 211816, P. R. China
| | - Yiqun Fan
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing 211816, P. R. China
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Xin Q, An K, Zhang Y, Yun M, Wang S, Lin L, Ye H, Ding X, Li H, Zhang Y. Metal organic frameworks decorated membrane contactor constructing SO2-philic channels for efficient flue gas desulphurization. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2020.118908] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Xin Q, Li X, Hou H, Liang Q, Guo J, Wang S, Zhang L, Lin L, Ye H, Zhang Y. Superhydrophobic Surface-Constructed Membrane Contactor with Hierarchical Lotus-Leaf-Like Interfaces for Efficient SO 2 Capture. ACS APPLIED MATERIALS & INTERFACES 2021; 13:1827-1837. [PMID: 33379865 DOI: 10.1021/acsami.0c17534] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
An organic-inorganic polyvinylidene fluoride/polyvinylidene fluoride-silica (PVDF/PVDF-SiO2) mixed matrix membrane contactor is fabricated via a facile and efficient hydrophobic modification method. The solubility parameters of the PVDF particle are precisely regulated, the PVDF particles are blended with SiO2 nanoparticles to form PVDF-SiO2 suspension, and then the suspension is introduced onto the surface of the PVDF substrate by an in situ spin coating strategy. The PVDF particles are partly etched and incorporated to construct the adhesive PVDF-SiO2 core-shell layer on the PVDF substrate, which results in a more stable PVDF-SiO2 coating layer on the substrate. The surface structure is precisely regulated by changing the etching morphology of PVDF particles and amount of doped PVDF and SiO2 particles, forming an integrated porous PVDF-SiO2 layer and constructing hierarchical lotus-leaf-like interfaces. The resultant PVDF/PVDF-SiO2 membrane contactors display the relatively regular distribution of pore size with ∼420 nm and excellent hydrophobic property with a water contact angle of ∼158°, which noticeably lightens wetting phenomena of membrane contactors. The SO2 absorption fluxes can reach as high as 1.26 × 10-3 mol·m-2·s-1 using 0.625 M of ethanolamine (EA) as liquid absorbent. The high stability of the SO2 absorption flux test indicates the excellent interface compatibility between the PVDF-SiO2 coating layer and the PVDF substrate. The versatile organic-inorganic layer exhibits super hydrophobic property, which prevents wetting of membrane pores. In addition, the membrane mass transfer resistance (H/Km) and membrane phase transfer coefficient (Km) are explored.
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Affiliation(s)
- Qingping Xin
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Xu Li
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Hailong Hou
- CNOOC Gas and Power Group/R & D Center, Chaoyang District Taiyanggong South Street No. 6, Beijing 100028, China
| | - Qingqing Liang
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Jianping Guo
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Shaofei Wang
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, China
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Lei Zhang
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Ligang Lin
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Hui Ye
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Yuzhong Zhang
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, China
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9
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Rosli A, Ahmad AL, Low SC. Enhancing membrane hydrophobicity using silica end-capped with organosilicon for CO2 absorption in membrane contactor. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117429] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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10
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Sun R, He L, Shang Q, Jiang S, Zhou C, Hong P, Zhao H, Sun S, Li C. Hydrophobic Magnetic Porous Material of Eichhornia crassipes for Highly Efficient Oil Adsorption and Separation. ACS OMEGA 2020; 5:9920-9928. [PMID: 32391479 PMCID: PMC7203981 DOI: 10.1021/acsomega.0c00200] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 04/09/2020] [Indexed: 05/08/2023]
Abstract
Many oil adsorption materials are composed of nonrenewable raw materials, and their disposal can increase resource consumption and cause new environmental pollution. In this paper, the carbonized Eichhornia crassipes (CEC) were immobilized with Fe3O4 magnetic nanoparticles and modified with 1H, 1H, 2H, 2H-perfluorooctyltriethoxysilane (PFOS) to prepare an oil adsorption material, referred to here as CEC/Fe3O4/PFOS. The magnetic and mechanical strength of the CEC was enhanced by adding Fe3O4 magnetic particles, which enable it efficient to dispose the oil/water solution. CEC/Fe3O4/PFOS shows high porosity (83.53%), low skeletal density (0.487 g/cm3), excellent magnetism, ultrahigh oil absorption capacity (49.94-140.90 g/g), hydrophobic performances with a water contact angle of 150.1 ± 2.3°, and a sliding angle of 10.5°. It is worth noting that the material can be recycled, and the absorbed oil is obtained by distillation. Therefore, this work may provide a candidate for solving the problem of oil pollution using E. crassipes.
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Affiliation(s)
- Ruikun Sun
- School of Chemistry
and Environment, Guangdong Ocean University,
Southern Marine Science and Engineering Guangdong Laboratory, Zhanjiang 524088, China
| | - Lei He
- School of Chemistry
and Environment, Guangdong Ocean University,
Southern Marine Science and Engineering Guangdong Laboratory, Zhanjiang 524088, China
| | - Qingtong Shang
- School of Chemistry
and Environment, Guangdong Ocean University,
Southern Marine Science and Engineering Guangdong Laboratory, Zhanjiang 524088, China
| | - Shiqi Jiang
- School of Chemistry
and Environment, Guangdong Ocean University,
Southern Marine Science and Engineering Guangdong Laboratory, Zhanjiang 524088, China
- Shenzhen Institute of Guangdong Ocean
University, Shenzhen 518108, China
| | - Chunxia Zhou
- School of Chemistry
and Environment, Guangdong Ocean University,
Southern Marine Science and Engineering Guangdong Laboratory, Zhanjiang 524088, China
- Shenzhen Institute of Guangdong Ocean
University, Shenzhen 518108, China
| | - Pengzhi Hong
- School of Chemistry
and Environment, Guangdong Ocean University,
Southern Marine Science and Engineering Guangdong Laboratory, Zhanjiang 524088, China
- Shenzhen Institute of Guangdong Ocean
University, Shenzhen 518108, China
| | - Hui Zhao
- School of Chemistry
and Environment, Guangdong Ocean University,
Southern Marine Science and Engineering Guangdong Laboratory, Zhanjiang 524088, China
| | - Shengli Sun
- School of Chemistry
and Environment, Guangdong Ocean University,
Southern Marine Science and Engineering Guangdong Laboratory, Zhanjiang 524088, China
| | - Chengyong Li
- School of Chemistry
and Environment, Guangdong Ocean University,
Southern Marine Science and Engineering Guangdong Laboratory, Zhanjiang 524088, China
- Shenzhen Institute of Guangdong Ocean
University, Shenzhen 518108, China
- . Fax: +86-759-2383636
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