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Chen Z, Weng P, Song Y, Zheng L, Tan Y, Yin X. Loofah-inspired sodium alginate/carboxymethyl cellulose sodium-based porous frame for all-weather super-viscous crude oil adsorption and wastewater treatment in harsh environment. Carbohydr Polym 2024; 323:121450. [PMID: 37940312 DOI: 10.1016/j.carbpol.2023.121450] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 09/28/2023] [Accepted: 09/29/2023] [Indexed: 11/10/2023]
Abstract
Solar-driven viscosity reduction of highly viscous crude oil has emerged as an environmentally friendly method to address large-scale oil spills. However, the challenge lies in the limited availability of sunlight during cloudy days and at night, which hinders the effectiveness of green advanced porous materials. This study developed all-weather-available advanced porous materials in the form of loofah-like structured porous frame composed of 1H, 1H, 2H, 2H-perfluorooctyltriethoxysilane/MXene/carbon nanotubes (CNTs)/sodium alginate (SA)/carboxymethyl cellulose sodium (NaCMC). MXene and CNTs formed a continuous and stable network that enabled PMCSCPs to rapidly reduce crude oil viscosity for all-day based on photothermal and electrothermal conversions. Additionally, loofah-like porous structure and oriented pipeline biomass skeleton endowed PMCSCPs with stable and rapid adsorption capacity and speed. Considering the complexity of the external environment and oily wastewater composition, we verified the separation performance of PMCSCPs for metal ions and dyes and the ice-breaking ability under icy conditions. PMCSCPs provided a novel approach to achieving clean, high-efficiency, all-day remediation of ultra-viscous crude oil. This "Three birds with one stone" approach is expected to be obtained from nature and used on a large scale, replacing conventional porous adsorbent materials.
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Affiliation(s)
- Zhicheng Chen
- College of Materials Science and Engineering, State Key Laboratory of New Textile Materials & Advanced Processing Technology, Wuhan Textile University, Wuhan 430200, China
| | - Puxin Weng
- College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou 510632, China
| | - Yiheng Song
- College of Materials Science and Engineering, State Key Laboratory of New Textile Materials & Advanced Processing Technology, Wuhan Textile University, Wuhan 430200, China
| | - Long Zheng
- College of Materials Science and Engineering, State Key Laboratory of New Textile Materials & Advanced Processing Technology, Wuhan Textile University, Wuhan 430200, China
| | - Yeqiang Tan
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Collaborative Innovation Center of Marine Biobased Fiber and Ecological Textile Technology, Institute of Marine Biobased Materials, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Xianze Yin
- College of Materials Science and Engineering, State Key Laboratory of New Textile Materials & Advanced Processing Technology, Wuhan Textile University, Wuhan 430200, China; State Key Laboratory of Bio-Fibers and Eco-Textiles, Collaborative Innovation Center of Marine Biobased Fiber and Ecological Textile Technology, Institute of Marine Biobased Materials, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China.
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Dai N, Guan X, Lu C, Zhang K, Xu S, Lei IM, Li G, Zhong Q, Fang P, Zhong J. A Flexible Self-Powered Noncontact Sensor with an Ultrawide Sensing Range for Human-Machine Interactions in Harsh Environments. ACS Nano 2023; 17:24814-24825. [PMID: 38051212 DOI: 10.1021/acsnano.3c05507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
Noncontact human-machine interactions (HMIs) provide a hygienic and intelligent approach to communicate between humans and machines. However, current noncontact HMIs are generally hampered by the interaction distance, and they lack the adaptability to environmental interference such as high humidity conditions. Here, we explore a self-powered electret-based noncontact sensor (ENS) with moisture-resisting ability and ultrawide sensing range exceeding 2.5 m. A megascopic air-bubble structure is designed to enhance charge-storage stability and charge-recovery ability of the ENS based on the heterocharge-synergy effect in electrets. Besides, multilayer electret films are introduced to strengthen the electric field by utilizing the electrostatic field superposition effect. Thanks to the above improved performances of the ENS, we demonstrate various noncontact HMI applications in harsh environments, including noncontact appliances, a moving trajectory and accidental fall tracking system, and a real-time machine learning-assisted gesture recognition system with accuracy as high as 99.21%. This research expands the way for noncontact sensor design and may further broaden applications in noncontact HMIs.
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Affiliation(s)
- Nian Dai
- Department of Electromechanical Engineering and Centre for Artificial Intelligence and Robotics, University of Macau, Taipa, Macau 999078, China
- CAS Key Laboratory of Human-Machine Intelligent-Synergy Systems, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Xiao Guan
- Department of Electromechanical Engineering and Centre for Artificial Intelligence and Robotics, University of Macau, Taipa, Macau 999078, China
| | - Chengyue Lu
- Department of Electromechanical Engineering and Centre for Artificial Intelligence and Robotics, University of Macau, Taipa, Macau 999078, China
| | - Kaijun Zhang
- Department of Electromechanical Engineering and Centre for Artificial Intelligence and Robotics, University of Macau, Taipa, Macau 999078, China
| | - Sumei Xu
- School of Microelectronics, Shanghai University, Shanghai 201800, P. R. China
| | - Iek Man Lei
- Department of Electromechanical Engineering and Centre for Artificial Intelligence and Robotics, University of Macau, Taipa, Macau 999078, China
| | - Guanglin Li
- CAS Key Laboratory of Human-Machine Intelligent-Synergy Systems, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Qize Zhong
- School of Microelectronics, Shanghai University, Shanghai 201800, P. R. China
| | - Peng Fang
- CAS Key Laboratory of Human-Machine Intelligent-Synergy Systems, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Junwen Zhong
- Department of Electromechanical Engineering and Centre for Artificial Intelligence and Robotics, University of Macau, Taipa, Macau 999078, China
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Dezord C, Micolau G, Abbas C, Mesgouez A, Borgo EPD. Reliable, versatile and remotely controlled instrumentation of an hectometric loop antenna using appropriate technologies. HardwareX 2023; 15:e00463. [PMID: 37700786 PMCID: PMC10494265 DOI: 10.1016/j.ohx.2023.e00463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 04/20/2023] [Accepted: 07/30/2023] [Indexed: 09/14/2023]
Abstract
The instrumentation of a giant loop antenna dedicated to environmental measurement, on a unique scientific site and intended to be open to the scientific community is presented. An open-source, low-cost electronic system has been designed, developed, and deployed in order to meet the need for reliability and flexibility imposed respectively by the harsh environment and the scientific objectives. The system's architecture is based on the simultaneous association of five Arduino boards piloted together by a Raspberry Pi which also controls the measurement devices. The setup is therefore automated, pilotable, and remotely reprogrammable. Special attention was paid to its hardware and software reliability. These have been proven efficient over more than two years of operation. Several scientific conference publications have already proven the feasibility of the measurement principle (Dezord et al., 2021; Dezord et al., 2022; Dezord et al., 2022). This article gives previously unpublished details regarding the electronic setup.
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Affiliation(s)
- Clément Dezord
- UMR 1114 EMMAH, AU - INRAE, 301 rue Baruch de Spinoza, BP 21239, 84911 Avignon cedex 9, France
- UAR 3538 Laboratoire Souterrain à Bas Bruit (CNRS), 84400 Rustrel, France
| | - Gilles Micolau
- UMR 1114 EMMAH, AU - INRAE, 301 rue Baruch de Spinoza, BP 21239, 84911 Avignon cedex 9, France
- UAR 3538 Laboratoire Souterrain à Bas Bruit (CNRS), 84400 Rustrel, France
| | - Chahine Abbas
- UMR 1114 EMMAH, AU - INRAE, 301 rue Baruch de Spinoza, BP 21239, 84911 Avignon cedex 9, France
| | - Arnaud Mesgouez
- UMR 1114 EMMAH, AU - INRAE, 301 rue Baruch de Spinoza, BP 21239, 84911 Avignon cedex 9, France
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Yin Z, Li M, Li Z, Deng Y, Xue M, Chen Y, Ou J, Lei S, Luo Y, Xie C. A harsh environment resistant robust Co(OH) 2@stearic acid nanocellulose-based membrane for oil-water separation and wastewater purification. J Environ Manage 2023; 342:118127. [PMID: 37178465 DOI: 10.1016/j.jenvman.2023.118127] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 05/03/2023] [Accepted: 05/07/2023] [Indexed: 05/15/2023]
Abstract
Traditional membranes are inefficient in treating highly toxic organic pollutants and oily wastewater in harsh environments, which is difficult to meet the growing demand for green development. Herein, the Co(OH)2@stearic acid nanocellulose-based membrane was prepared by depositing Co(OH)2 on the nanocellulose-based membrane (NBM) through chemical soaking method, which enables efficient oil/water mixtures separation and degradation of pollutants by photocatalysis in harsh environments. The Co(OH)2@stearic acid nanocellulose-based membrane (Co(OH)2@stearic acid NBM) shows good photocatalytic degradation performance for methylene blue pollutants in harsh environment, and has significant degradation rate (93.66%). At the same time, the Co(OH)2@stearic acid NBM with superhydrophobicity and superoleophilicity also exhibits respectable oil/water mixtures separation performance (n-Hexane, dimethyl carbonate, chloroform and toluene) under harsh environment (strong acid/strong alkali), which has an excellent oil-water mixtures separation flux of 87 L·m-2·h-1 (n-Hexane/water) and oil-water mixture separation efficiency of over 93% (n-Hexane/water). In addition, this robust Co(OH)2@stearic acid NBM shows good self-cleaning and recycling performance. Even though seven oil-water separation tests have been carried out under harsh environment, it can still maintain respectable oil-water mixture separation rate and flux. The multifunctional membrane has excellent resistance to harsh environments, oil-water separation and pollutant degradation can be performed even in harsh environments, which provides a convenient way to treat sewage under harsh conditions efficiently and has great potential in practical application.
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Affiliation(s)
- Zuozhu Yin
- School of Aerospace Manufacturing Engineering, Nanchang Hangkong University, 696 Fenghe South Road, Nanchang, 330063, China
| | - Min Li
- School of Aerospace Manufacturing Engineering, Nanchang Hangkong University, 696 Fenghe South Road, Nanchang, 330063, China
| | - Zihao Li
- School of Aerospace Manufacturing Engineering, Nanchang Hangkong University, 696 Fenghe South Road, Nanchang, 330063, China
| | - Yuanting Deng
- School of Aerospace Manufacturing Engineering, Nanchang Hangkong University, 696 Fenghe South Road, Nanchang, 330063, China
| | - Mingshan Xue
- School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang, 330063, China.
| | - Yuhua Chen
- School of Aerospace Manufacturing Engineering, Nanchang Hangkong University, 696 Fenghe South Road, Nanchang, 330063, China
| | - Junfei Ou
- School of Materials Engineering, Jiangsu University of Technology, Changzhou, 213001, China
| | - Sheng Lei
- School of Materials Engineering, Jiangsu University of Technology, Changzhou, 213001, China
| | - Yidan Luo
- School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang, 330063, China
| | - Chan Xie
- School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang, 330063, China
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Ibrahim I, Seo DH, Park MJ, Angeloski A, McDonagh A, Bendavid A, Shon HK, Tijing L. Highly stable gold nanolayer membrane for efficient solar water evaporation under a harsh environment. Chemosphere 2022; 299:134394. [PMID: 35331744 DOI: 10.1016/j.chemosphere.2022.134394] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 03/16/2022] [Accepted: 03/19/2022] [Indexed: 06/14/2023]
Abstract
Interfacial solar water evaporation has attracted tremendous attention for sunlight harvesting for water purification. However, salt formation and stability of the photothermal materials (PTMs) remain a challenge that need addressing before bringing this technology to real-world applications. In this work, a nanoscale thin film of gold (Au) on a polytetrafluoroethylene (PTFE) membrane has been prepared using a magnetic sputtering technique. The fabricated membrane displays a robust mechanical strength and chemical stability arising from the adhesiveness of the thin film Au nanolayer on the PTFE membrane as well as the chemical inertness of the noble metal PTM. The Au nanolayer/PTFE membrane with cellulose sponge substrate resulted in an evaporation rate of 0.88 kg m-2 h-1 under 1 sun intensity. Remarkable salt ion rejection of 99.9% has been obtained, meeting the required standard for drinking water. Moreover, the membrane exhibited excellent stability and reusability in natural seawater and high salinity brine (150 g/L) and even in severe conditions (acidic, basic, and oxidized). No noticeable salt formation was observed on the evaporator surface after the tests. These findings reveal promising prospects for using a magnetron sputtering technique to fabricate a stable photothermal membrane for seawater and high salinity brine desalination.
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Affiliation(s)
- Idris Ibrahim
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, PO Box 123, 15 Broadway, Sydney, NSW, 2007, Australia
| | - Dong Han Seo
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, PO Box 123, 15 Broadway, Sydney, NSW, 2007, Australia; Energy Materials & Devices, Korea Institute of Energy Technology (KENTECH), Naju, Republic of Korea.
| | - Myoung Jun Park
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, PO Box 123, 15 Broadway, Sydney, NSW, 2007, Australia
| | - Alexander Angeloski
- School of Mathematical and Physical Sciences, University of Technology Sydney, Ultimo, 2007, Australia
| | - Andrew McDonagh
- School of Mathematical and Physical Sciences, University of Technology Sydney, Ultimo, 2007, Australia
| | - Avi Bendavid
- CSIRO Manufacturing, 36 Bradfield Road, Lindfield, NSW, 2070, Australia; School of Materials Science and Engineering, University of New South Wales, Kensington, NSW, 2052, Australia
| | - Ho Kyong Shon
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, PO Box 123, 15 Broadway, Sydney, NSW, 2007, Australia; ARC Research Hub for Nutrients in a Circular Economy, University of Technology Sydney, PO Box 123, 15 Broadway, Sydney, NSW, 2007, Australia
| | - Leonard Tijing
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, PO Box 123, 15 Broadway, Sydney, NSW, 2007, Australia; ARC Research Hub for Nutrients in a Circular Economy, University of Technology Sydney, PO Box 123, 15 Broadway, Sydney, NSW, 2007, Australia.
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6
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Bai M, Wang J, Zhou R, Lu Z, Wang L, Ning X. Polyphenylene sulfide fabric with enhanced oxidation resistance and hydrophobicity through polybenzoxazine surface coating for emission control in harsh environment. J Hazard Mater 2022; 432:128735. [PMID: 35349846 DOI: 10.1016/j.jhazmat.2022.128735] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 03/06/2022] [Accepted: 03/15/2022] [Indexed: 06/14/2023]
Abstract
Emissions from power generation and municipal waste incineration sources are primarily at high temperatures and contain corrosive gases, particulate pollutants and are enormously challenging on the performance of the filtration systems in use. Here, polyphenylene sulfide (PPS) nonwoven fabric, a primary material used commercially in such settings, is modified with a polybenzoxazine precursor as a coating to deliver improved thermal and oxidation resistance to the fibrous substrate. The polybenzoxazine precursor undergoes chain propagation and crosslinking upon the treatment process to provide a protective layer over the PPS fibers such that enhanced structural stability in a harsh environment was demonstrated. We have shown the improved overall tensile strength (+15%), Young's modulus (+26%), and more hydrophobic nature of the modified PPS fabric, while the superior environmental stability and better filtration performance could be achieved. Such methodology may lead to higher service temperature and extended service time of the PPS filtration bags in harsh fire exhaustion airstreams encountered in power plants or municipal garbage incineration facilities. The crosslinkable benzoxazine could also be the most cost-effective high temperature coating layer on fibers, enabling future high-performance air filtration materials.
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Affiliation(s)
- Mingqi Bai
- Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing, Qingdao University, Qingdao 266071, China
| | - Jian Wang
- Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing, Qingdao University, Qingdao 266071, China; Shandong Center for Engineered Nonwovens, Qingdao University, Qingdao 266071, China.
| | - Rong Zhou
- Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing, Qingdao University, Qingdao 266071, China; Shandong Center for Engineered Nonwovens, Qingdao University, Qingdao 266071, China
| | - Zaijun Lu
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Liming Wang
- Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing, Qingdao University, Qingdao 266071, China
| | - Xin Ning
- Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing, Qingdao University, Qingdao 266071, China; Shandong Center for Engineered Nonwovens, Qingdao University, Qingdao 266071, China.
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Aubernon C, Hedouin V, Charabidze D. The maggot, the ethologist and the forensic entomologist: Sociality and thermoregulation in necrophagous larvae. J Adv Res 2019; 16:67-73. [PMID: 30899590 DOI: 10.1016/j.jare.2018.12.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 12/03/2018] [Accepted: 12/05/2018] [Indexed: 11/24/2022] Open
Abstract
Necrophagous blowflies larvae maintain a permanent balance between thermal regulation and aggregation. These two parameters affect their development. Such a behavioral regulation likely optimize their development on carcasses. This may be a pre-social strategy to cope with harsh environment. Forensic entomology studies should consider the behavior of maggots.
Necrophagous insects are mostly known through forensic entomology. Indeed, experimental data investigating the effect of temperature on larval development underlies post-mortem interval estimations. However, such developmental studies rarely considered the behavior of maggots. In contrast, previous results supposed that calliphoridae larvae use behavioral strategies to optimize their development on carcasses. To test this idea, we analyzed the trade-off between thermal regulation (individual thermal preferences) and social behavior (aggregation) in Lucilia sericata larvae. The first set of experiments analyzed the behavior of third instars in response to thermal changes in their environment. The results demonstrated a clear thermoregulation behavior, supporting the assumption that larvae continuously move to reach a suitable internal temperature. The second set of experiments focused on the trade-off between thermal optimization and aggregation. The results showed a constant search for congeners and an attractiveness of aggregates, sometimes to the detriment of thermal optimization. Together, these results demonstrate a balance between behavioral thermoregulation and social strategies, two significant mechanisms for developmental optimization in necrophagous larvae. In conclusion, these findings highlights unexpected (social) strategies to cope with ephemeral resource and high selection pressure. They also raise important questions for forensic entomology.
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Sadeghi-Tohidi F, Samet D, Graham S, Pierron ON. Comparison of the cohesive and delamination fatigue properties of atomic-layer-deposited alumina and titania ultrathin protective coatings deposited at 200 °C. Sci Technol Adv Mater 2014; 15:015003. [PMID: 27877645 PMCID: PMC5090606 DOI: 10.1088/1468-6996/15/1/015003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Revised: 01/07/2014] [Accepted: 11/05/2013] [Indexed: 05/14/2023]
Abstract
The fatigue properties of ultrathin protective coatings on silicon thin films were investigated. The cohesive and delamination fatigue properties of 22 nm-thick atomic-layered-deposited (ALD) titania were characterized and compared to that of 25 nm-thick alumina. Both coatings were deposited at 200 °C. The fatigue rates are comparable at 30 °C, 50% relative humidity (RH) while they are one order of magnitude larger for alumina compared to titania at 80 °C, 90% RH. The improved fatigue performance is believed to be related to the improved stability of the ALD titania coating with water compared to ALD alumina, which may in part be related to the fact that ALD titania is crystalline, while ALD alumina is amorphous. Static fatigue crack nucleation and propagation was not observed. The underlying fatigue mechanism is different from previously documented mechanisms, such as stress corrosion cracking, and appears to result from the presence of compressive stresses and a rough coating-substrate interface.
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