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Askarnia R, Sobhani M, Zare M, Aghamohammadi H, Staji H. Incorporation of Al 2O 3 and ZrO 2 ceramics to AZ31 magnesium alloys composite coating using micro-arc oxidation method. J Mech Behav Biomed Mater 2023; 141:105784. [PMID: 36934686 DOI: 10.1016/j.jmbbm.2023.105784] [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: 01/23/2023] [Revised: 03/09/2023] [Accepted: 03/13/2023] [Indexed: 03/16/2023]
Abstract
In this research, a composite coating with Al2O3 and ZrO2 particles have been applied on AZ31 magnesium alloy by micro-arc oxidation (MAO) technique. The alkaline electrolyte included a constant based composition and different composition of the Al2O3 and ZrO2 additives. Microstructure observations reveal that the surface pores of composite coating reduced during addition of ZrO2 and Al2O3 ceramic particles. The hardness of coating increased from about 380 for non-added to 620 MPa for Al2O3+ZrO2 added coating and wear rate reduced about 8 times. Wettability of the coating increased by incorporation of Al2O3 and/or ZrO2 particles while, Al2O3 is more effective than ZrO2. Addition of the ceramic particles enhanced the hydrophilicity properties of surface in wettability test and a contact angle of 43° was obtained for coating including Al2O3+ZrO2. The antibacterial properties of MAO coatings showed that S. aureus bacterium is more sensitive to the zirconia and alumina particle than S. typhimurium bacterium after 24 h of incubation.
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Affiliation(s)
- R Askarnia
- Faculty of Materials and Metallurgical Engineering, Semnan University, Semnan, Iran
| | - M Sobhani
- Faculty of Materials and Metallurgical Engineering, Semnan University, Semnan, Iran.
| | - M Zare
- Department of Materials Engineering, Isfahan University of Technology, Iran
| | - H Aghamohammadi
- Department of Materials Engineering, Babol Noshirvani University of Technology, Babol, Iran
| | - H Staji
- Department of Veterinary Medicine, Semnan University, Semnan, Iran
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2
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Advanced Polymeric Nanocomposite Membranes for Water and Wastewater Treatment: A Comprehensive Review. Polymers (Basel) 2023; 15:polym15030540. [PMID: 36771842 PMCID: PMC9920371 DOI: 10.3390/polym15030540] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/13/2023] [Accepted: 01/16/2023] [Indexed: 01/24/2023] Open
Abstract
Nanomaterials have been extensively used in polymer nanocomposite membranes due to the inclusion of unique features that enhance water and wastewater treatment performance. Compared to the pristine membranes, the incorporation of nanomodifiers not only improves membrane performance (water permeability, salt rejection, contaminant removal, selectivity), but also the intrinsic properties (hydrophilicity, porosity, antifouling properties, antimicrobial properties, mechanical, thermal, and chemical stability) of these membranes. This review focuses on applications of different types of nanomaterials: zero-dimensional (metal/metal oxide nanoparticles), one-dimensional (carbon nanotubes), two-dimensional (graphene and associated structures), and three-dimensional (zeolites and associated frameworks) nanomaterials combined with polymers towards novel polymeric nanocomposites for water and wastewater treatment applications. This review will show that combinations of nanomaterials and polymers impart enhanced features into the pristine membrane; however, the underlying issues associated with the modification processes and environmental impact of these membranes are less obvious. This review also highlights the utility of computational methods toward understanding the structural and functional properties of the membranes. Here, we highlight the fabrication methods, advantages, challenges, environmental impact, and future scope of these advanced polymeric nanocomposite membrane based systems for water and wastewater treatment applications.
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Sacchi M, Tamtögl A. Water adsorption and dynamics on graphene and other 2D materials: Computational and experimental advances. ADVANCES IN PHYSICS: X 2022; 8:2134051. [PMID: 36816858 PMCID: PMC7614201 DOI: 10.1080/23746149.2022.2134051] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 09/26/2022] [Accepted: 09/27/2022] [Indexed: 06/18/2023] Open
Abstract
The interaction of water and surfaces, at molecular level, is of critical importance for understanding processes such as corrosion, friction, catalysis and mass transport. The significant literature on interactions with single crystal metal surfaces should not obscure unknowns in the unique behaviour of ice and the complex relationships between adsorption, diffusion and long-range inter-molecular interactions. Even less is known about the atomic-scale behaviour of water on novel, non-metallic interfaces, in particular on graphene and other 2D materials. In this manuscript, we review recent progress in the characterisation of water adsorption on 2D materials, with a focus on the nano-material graphene and graphitic nanostructures; materials which are of paramount importance for separation technologies, electrochemistry and catalysis, to name a few. The adsorption of water on graphene has also become one of the benchmark systems for modern computational methods, in particular dispersion-corrected density functional theory (DFT). We then review recent experimental and theoretical advances in studying the single-molecular motion of water at surfaces, with a special emphasis on scattering approaches as they allow an unparalleled window of observation to water surface motion, including diffusion, vibration and self-assembly.
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Affiliation(s)
- M. Sacchi
- Department of Chemistry, University of Surrey, Guildford GU2 7XH, UK
| | - A. Tamtögl
- Institute of Experimental Physics, Graz University of Technology, 8010 Graz, Austria
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4
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Remediation of saline oily water using an algae-based membrane. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.121201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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5
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Park C, Robinson F, Kim D. Effect of Layer Orientation and Pore Morphology on Water Transport in Multilayered Porous Graphene. MICROMACHINES 2022; 13:1786. [PMID: 36296139 PMCID: PMC9607007 DOI: 10.3390/mi13101786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/14/2022] [Accepted: 10/17/2022] [Indexed: 06/16/2023]
Abstract
In the present work, the effects on water transport due to the orientation of the layer in the multilayered porous graphene and the different patterns formed when the layer is oriented to some degrees are studied for both circular and non-circular pore configurations. Interestingly, the five-layered graphene membrane with a layer separation of 3.5 Å used in this study shows that the water transport through multilayered porous graphene can be augmented by introducing an angle to certain layers of the multilayered membrane system.
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Tamtögl A, Bahn E, Sacchi M, Zhu J, Ward DJ, Jardine AP, Jenkins SJ, Fouquet P, Ellis J, Allison W. Motion of water monomers reveals a kinetic barrier to ice nucleation on graphene. Nat Commun 2021; 12:3120. [PMID: 34035257 PMCID: PMC8149658 DOI: 10.1038/s41467-021-23226-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 04/16/2021] [Indexed: 02/04/2023] Open
Abstract
The interfacial behaviour of water remains a central question to fields as diverse as protein folding, friction and ice formation. While the properties of water at interfaces differ from those in the bulk, major gaps in our knowledge limit our understanding at the molecular level. Information concerning the microscopic motion of water comes mostly from computation and, on an atomic scale, is largely unexplored by experiment. Here, we provide a detailed insight into the behaviour of water monomers on a graphene surface. The motion displays remarkably strong signatures of cooperative behaviour due to repulsive forces between the monomers, enhancing the monomer lifetime ( ≈ 3 s at 125 K) in a free-gas phase that precedes the nucleation of ice islands and, in turn, provides the opportunity for our experiments to be performed. Our results give a molecular perspective on a kinetic barrier to ice nucleation, providing routes to understand and control the processes involved in ice formation.
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Affiliation(s)
- Anton Tamtögl
- Cavendish Laboratory, University of Cambridge, Cambridge, UK.
- Institute of Experimental Physics, Graz University of Technology, Graz, Austria.
| | - Emanuel Bahn
- Cavendish Laboratory, University of Cambridge, Cambridge, UK
- Department of Radiation Oncology, Heidelberg University Hospital, Heidelberg, Germany
| | - Marco Sacchi
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK.
- Department of Chemistry, University of Surrey, Guildford, UK.
| | - Jianding Zhu
- Cavendish Laboratory, University of Cambridge, Cambridge, UK
| | - David J Ward
- Cavendish Laboratory, University of Cambridge, Cambridge, UK
| | | | - Stephen J Jenkins
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK
| | | | - John Ellis
- Cavendish Laboratory, University of Cambridge, Cambridge, UK
| | - William Allison
- Cavendish Laboratory, University of Cambridge, Cambridge, UK
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da Silva RI, de Souza Figueiredo KC. Incorporation of graphene oxide on thin film composite polysulfone/polyamide membranes. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2021. [DOI: 10.1007/s43153-021-00098-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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8
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Kim T, Park C, Samuel EP, An S, Aldalbahi A, Alotaibi F, Yarin AL, Yoon SS. Supersonically Sprayed Washable, Wearable, Stretchable, Hydrophobic, and Antibacterial rGO/AgNW Fabric for Multifunctional Sensors and Supercapacitors. ACS APPLIED MATERIALS & INTERFACES 2021; 13:10013-10025. [PMID: 33595267 DOI: 10.1021/acsami.0c21372] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Wearable electronic textiles are used in sensors, energy-harvesting devices, healthcare monitoring, human-machine interfaces, and soft robotics to acquire real-time big data for machine learning and artificial intelligence. Wearability is essential while collecting data from a human, who should be able to wear the device with sufficient comfort. In this study, reduced graphene oxide (rGO) and silver nanowires (AgNWs) were supersonically sprayed onto a fabric to ensure good adhesiveness, resulting in a washable, stretchable, and wearable fabric without affecting the performance of the designed features. This rGO/AgNW-decorated fabric can be used to monitor external stimuli such as strain and temperature. In addition, it is used as a heater and as a supercapacitor and features an antibacterial hydrophobic surface that minimizes potential infection from external airborne viruses or virus-containing droplets. Herein, the wearability, stretchability, washability, mechanical durability, temperature-sensing capability, heating ability, wettability, and antibacterial features of this metallized fabric are explored. This multifunctionality is achieved in a single fabric coated with rGO/AgNWs via supersonic spraying.
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Affiliation(s)
- Taegun Kim
- School of Mechanical Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Chanwoo Park
- School of Mechanical Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Edmund P Samuel
- School of Mechanical Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Seongpil An
- SKKU Advanced Institute of Nanotechnology (SAINT) and Department of Nano Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea
| | - Ali Aldalbahi
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Faisal Alotaibi
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Alexander L Yarin
- Department of Mechanical and Industrial Engineering, University of Illinois at Chicago, 842 W. Taylor Street, Chicago, Illinois 60607-7022, United States
| | - Sam S Yoon
- School of Mechanical Engineering, Korea University, Seoul 02841, Republic of Korea
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9
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Ding F, Gao M. Pore wettability for enhanced oil recovery, contaminant adsorption and oil/water separation: A review. Adv Colloid Interface Sci 2021; 289:102377. [PMID: 33601298 DOI: 10.1016/j.cis.2021.102377] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 01/26/2021] [Accepted: 01/27/2021] [Indexed: 01/18/2023]
Abstract
Wettability, a fundamental property of porous surface, occupies a pivotal position in the fields of enhanced oil recovery, organic contaminant adsorption and oil/water separation. In this review, wettability and the related applications are systematically expounded from the perspectives of hydrophilicity, hydrophobicity and super-wettability. Four common measurement methods are generalized and categorized into contact angle method and ratio method, and influencing factors (temperature, the type and layer charge of matrix, the species and structure of modifier) as well as their corresponding altering methods (inorganic, organic and thermal modification etc.) of wettability are overviewed. Different roles of wettability alteration in enhanced oil recovery, organic contaminant adsorption as well as oil/water separation are summarized. Among these applications, firstly, the hydrophilic alteration plays a key role in recovery of the oil production process; secondly, hydrophobic circumstance of surface drives the organic pollutant adsorption more effectually; finally, super-wetting property of matrix ensures the high-efficient separation of oil from water. This review also identifies importance, challenges and future prospects of wettability alteration, and as a result, furnishes the essential guidance for selection and design inspiration of the wettability modification, and supports the further development of pore wettability application.
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Abstract
Graphene materials (GMs) are being investigated for multiple microbiological applications because of their unique physicochemical characteristics including high electrical conductivity, large specific surface area, and robust mechanical strength. In the last decade, studies on the interaction of GMs with bacterial cells appear conflicting. On one side, GMs have been developed to promote the proliferation of electroactive bacteria on the surface of electrodes in bioelectrochemical systems or to accelerate interspecies electron transfer during anaerobic digestion. On the other side, GMs with antibacterial properties have been synthesized to prevent biofilm formation on membranes for water treatment, on medical equipment, and on tissue engineering scaffolds. In this review, we discuss the mechanisms and factors determining the positive or negative impact of GMs on bacteria. Furthermore, we examine the bacterial growth-promoting and antibacterial applications of GMs and debate their practicability.
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Affiliation(s)
- Tian Zhang
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, PR China
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, PR China
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, PR China
| | - Pier-Luc Tremblay
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, PR China
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, PR China
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11
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An S, Joshi B, Yarin AL, Swihart MT, Yoon SS. Supersonic Cold Spraying for Energy and Environmental Applications: One-Step Scalable Coating Technology for Advanced Micro- and Nanotextured Materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1905028. [PMID: 31747097 PMCID: PMC6980375 DOI: 10.1002/adma.201905028] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Revised: 09/09/2019] [Indexed: 05/17/2023]
Abstract
Supersonic cold spraying is an emerging technique for rapid deposition of films of materials including micrometer-size and sub-micrometer metal particles, nanoscale ceramic particles, clays, polymers, hybrid materials composed of polymers and particulates, reduced graphene oxide (rGO), and metal-organic frameworks. In this method, particles are accelerated to a high velocity and then impact a substrate at near ambient temperature, where dissipation of their kinetic energy produces strong adhesion. Here, recent progress in fundamentals and applications of cold spraying is reviewed. High-velocity impact with the substrate results in significant deformation, which not only produces adhesion, but can change the particles' internal structure. Cold-sprayed coatings can also exhibit micro- and nanotextured morphologies not achievable by other means. Suspending micro- or nanoparticles in a liquid and cold-spraying the suspension produces fine atomization and even deposition of materials that could not otherwise be processed. The scalability and low cost of this method and its compatibility with roll-to-roll processing make it promising for many applications, including ultrathin flexible materials, solar cells, touch-screen panels, nanotextured surfaces for enhanced heat transfer, thermal and electrical insulation films, transparent conductive films, materials for energy storage (e.g., Li-ion battery electrodes), heaters, sensors, photoelectrodes for water splitting, water purification membranes, and self-cleaning films.
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Affiliation(s)
- Seongpil An
- Department of Mechanical and Industrial Engineering, University of Illinois at Chicago, Chicago, IL, 60607-7022, USA
| | - Bhavana Joshi
- Department of Physics, NES Science College, Snehnagar, Nanded, 431605, Maharashtra, India
| | - Alexander L Yarin
- Department of Mechanical and Industrial Engineering, University of Illinois at Chicago, Chicago, IL, 60607-7022, USA
| | - Mark T Swihart
- Department of Chemical and Biological Engineering and RENEW Institute, University at Buffalo, The State University of New York, Buffalo, NY, 14260-4200, USA
| | - Sam S Yoon
- School of Mechanical Engineering, Korea University, Seoul, 02841, Republic of Korea
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12
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Presel F, Gijón A, Hernández ER, Lacovig P, Lizzit S, Alfè D, Baraldi A. Translucency of Graphene to van der Waals Forces Applies to Atoms/Molecules with Different Polar Character. ACS NANO 2019; 13:12230-12241. [PMID: 31589408 DOI: 10.1021/acsnano.9b07277] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Graphene has been proposed to be either fully transparent to van der Waals interactions to the extent of allowing switching between hydrophobic and hydrophilic behavior, or partially transparent (translucent), yet there has been considerable debate on this topic, which is still ongoing. In a combined experimental and theoretical study we investigate the effects of different metal substrates on the adsorption energy of atomic (argon) and molecular (carbon monoxide) adsorbates on high-quality epitaxial graphene. We demonstrate that while the adsorption energy is certainly affected by the chemical composition of the supporting substrate and by the corrugation of the carbon lattice, the van der Waals interactions between adsorbates and the metal surfaces are partially screened by graphene. Our results indicate that the concept of graphene translucency, already introduced in the case of water droplets, is found to hold more generally also in the case of single polar molecules and atoms, which are apolar.
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Affiliation(s)
- Francesco Presel
- Physics Department , University of Trieste , Via Valerio 2 , 34127 Trieste , Italy
| | - Alfonso Gijón
- Instituto de Ciencia de Materiales de Madrid - ICMM-CSIC) , Campus de Cantoblanco , 28049 Madrid , Spain
| | - Eduardo R Hernández
- Instituto de Ciencia de Materiales de Madrid - ICMM-CSIC) , Campus de Cantoblanco , 28049 Madrid , Spain
| | - Paolo Lacovig
- Elettra-Sincrotrone Trieste S.C.p.A. , Strada Statale 14 Km 163.5 , 34149 Trieste , Italy
| | - Silvano Lizzit
- Elettra-Sincrotrone Trieste S.C.p.A. , Strada Statale 14 Km 163.5 , 34149 Trieste , Italy
| | - Dario Alfè
- Department of Earth Sciences, Department of Physics and Astronomy , TYC@UCL , London WC1E 6BT , United Kingdom
- London Centre for Nanotechnology , University College London , Gower Street , London WC1E 6BT , United Kingdom
- Dipartimento di Fisica Ettore Pancini , Università di Napoli Federico II , Monte S. Angelo, 80126 Napoli , Italy
| | - Alessandro Baraldi
- Physics Department , University of Trieste , Via Valerio 2 , 34127 Trieste , Italy
- Elettra-Sincrotrone Trieste S.C.p.A. , Strada Statale 14 Km 163.5 , 34149 Trieste , Italy
- IOM-CNR , Laboratorio TASC , AREA Science Park, S.S. 14 km 163.5 , 34149 Trieste , Italy
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Huang K, Yu H, Xie M, Liu S, Wu F. Effects of poly(ethylene glycol)-grafted graphene on the electrical properties of poly(lactic acid) nanocomposites. RSC Adv 2019; 9:10599-10605. [PMID: 35515283 PMCID: PMC9062533 DOI: 10.1039/c9ra01060b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Accepted: 03/30/2019] [Indexed: 11/21/2022] Open
Abstract
Maleic anhydride was reacted with the armchair edges of graphene nanosheets (GN) via Diels-Alder reaction. Then, polyethylene glycol (PEG) was grafted onto the GN in the presence of anhydride groups through an esterification reaction. The PEG-grafted GN (PEG-g-GN) was characterised via FTIR analysis, thermogravimetric analysis, scanning electron microscopy, Raman spectroscopy and contact angle measurements, proving that PEG was successfully grafted onto the GN surface. The results indicated that PEG-g-GN possessed high electrical conductivity and was dispersed in polylactic acid (PLA). The composites were fabricated by using PEG-g-GN and GN as the conductive agent in the PLA matrix. Owing to the function of PEG molecular chains, PEG-g-GN can be uniformly dispersed in the PLA matrix and improve the tensile strength of composites to 59.46 MPa and conductivity to 9.69 × 10-4 S cm-1 at a PEG-g-GN content of 1 wt%.
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Affiliation(s)
- Kaibing Huang
- College of Materials Science and Engineering, Hunan University Changsha 410082 PR China
| | - Han Yu
- College of Materials Science and Engineering, Hunan University Changsha 410082 PR China
| | - Mei Xie
- College of Materials Science and Engineering, Hunan University Changsha 410082 PR China
| | - Shuai Liu
- College of Materials Science and Engineering, Hunan University Changsha 410082 PR China
| | - Fenxia Wu
- Changsha Loyal Chemical Technology Company Limited Changsha 410081 PR China
- Hunan Engineering Research Center of Eco-friendly Water Based Adhesive Materials Changsha 410081 PR China
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14
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Surface properties of graphene and graphene/diamond composites located at a substrate with tungsten carbide doped by metals composites. ADSORPTION 2019. [DOI: 10.1007/s10450-019-00034-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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15
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Polyurethane-Supported Graphene Oxide Foam Functionalized with Carbon Dots and TiO2 Particles for Photocatalytic Degradation of Dyes. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9020293] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The design and optimal synthesis of functional nanomaterials can meet the requirements of energy and environmental science. As a typical photocatalyst, TiO2 can be used to degrade dyes into non-toxic substances. In this work, we demonstrated the in-situ hydrothermal synthesis of carbon quantum dots (CQDs)-modified TiO2 (CQDs/TiO2) particles, and the subsequent fabrication of three-dimensional (3D) graphene oxide (GO) foam doped with CQDs/TiO2 via a facile strategy. By making full use of the up-conversion characteristics of CQDs, the synthesized CQDs/TiO2 exhibited high catalytic activity under visible light. In order to recover the photocatalyst conveniently, CQDs/TiO2 and GO were mixed by ultrasound and loaded on 3D polyurethane foam (PUF) by the multiple impregnation method. It was found that GO, CQDs/TiO2, and PUF reveal synergistic effects on the dye adsorption and photocatalytic degradation processes. The fabricated 3D CQDs/TiO2/GO foam system with a stable structure can maintain a high photocatalytic degradation efficiency after using at least five times. It is expected that the fabricated 3D materials will have potential applications in the fields of oil water separation, the removal of oils, and the photothermal desalination of seawater.
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16
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An S, Sankaran A, Yarin AL. Natural Biopolymer-Based Triboelectric Nanogenerators via Fast, Facile, Scalable Solution Blowing. ACS APPLIED MATERIALS & INTERFACES 2018; 10:37749-37759. [PMID: 30272436 DOI: 10.1021/acsami.8b15597] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Here, we fabricated nanofiber (NF)-based triboelectric nanogenerators (TENGs) from natural biopolymers using the industrially scalable solution blowing. This technique eliminates severe restrictions on solutions to be used and allows one to achieve biocompatible devices. Here, solutions of soy protein and lignin were blown into continuous monolithic NFs of hundreds of nanometers in diameter. The technique we employed yields large-area NF mats within tens of minutes and has never been employed to form TENGs. Furthermore, in contrast to electrospun and meltblown fiber mats, solution-blown NF mats are much fluffier/porous, which is beneficial for achieving higher voltages by means of triboelectricity. In particular, triboelectricity generated by our biopolymer-based TENGs revealed that they hold great promise as sustainable and environmentally friendly self-powered devices for biomedical applications with the highest efficiency in their class. Moreover, these are the first nanotextured plant-derived biopolymer-made TENGs.
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Affiliation(s)
- Seongpil An
- Department of Mechanical and Industrial Engineering , University of Illinois at Chicago , 842 W. Taylor Street , Chicago , Illinois 60607-7022 , United States
| | - Abhilash Sankaran
- Department of Mechanical and Industrial Engineering , University of Illinois at Chicago , 842 W. Taylor Street , Chicago , Illinois 60607-7022 , United States
| | - Alexander L Yarin
- Department of Mechanical and Industrial Engineering , University of Illinois at Chicago , 842 W. Taylor Street , Chicago , Illinois 60607-7022 , United States
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18
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Rezaei M, Warsinger DM, Lienhard V JH, Duke MC, Matsuura T, Samhaber WM. Wetting phenomena in membrane distillation: Mechanisms, reversal, and prevention. WATER RESEARCH 2018; 139:329-352. [PMID: 29660622 DOI: 10.1016/j.watres.2018.03.058] [Citation(s) in RCA: 247] [Impact Index Per Article: 41.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 03/01/2018] [Accepted: 03/25/2018] [Indexed: 06/08/2023]
Abstract
Membrane distillation (MD) is a rapidly emerging water treatment technology; however, membrane pore wetting is a primary barrier to widespread industrial use of MD. The primary causes of membrane wetting are exceedance of liquid entry pressure and membrane fouling. Developments in membrane design and the use of pretreatment have provided significant advancement toward wetting prevention in membrane distillation, but further progress is needed. In this study, a broad review is carried out on wetting incidence in membrane distillation processes. Based on this perspective, the study describes the wetting mechanisms, wetting causes, and wetting detection methods, as well as hydrophobicity measurements of MD membranes. This review discusses current understanding and areas for future investigation on the influence of operating conditions, MD configuration, and membrane non-wettability characteristics on wetting phenomena. Additionally, the review highlights mathematical wetting models and several approaches to wetting control, such as membrane fabrication and modification, as well as techniques for membrane restoration in MD. The literature shows that inorganic scaling and organic fouling are the main causes of membrane wetting. The regeneration of wetting MD membranes is found to be challenging and the obtained results are usually not favorable. Several pretreatment processes are found to inhibit membrane wetting by removing the wetting agents from the feed solution. Various advanced membrane designs are considered to bring membrane surface non-wettability to the states of superhydrophobicity and superomniphobicity; however, these methods commonly demand complex fabrication processes or high-specialized equipment. Recharging air in the feed to maintain protective air layers on the membrane surface has proven to be very effective to prevent wetting, but such techniques are immature and in need of significant research on design, optimization, and pilot-scale studies.
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Affiliation(s)
- Mohammad Rezaei
- Institute of Process Engineering, Johannes Kepler University Linz, Altenberger Strasse 69, 4040 Linz, Austria.
| | - David M Warsinger
- Department of Chemical and Environmental Engineering, Yale University, New Haven, CT 06520-8286, USA; Rohsenow Kendall Heat Transfer Laboratory, Department of Mechanical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge MA 02139-4307, USA
| | - John H Lienhard V
- Rohsenow Kendall Heat Transfer Laboratory, Department of Mechanical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge MA 02139-4307, USA
| | - Mikel C Duke
- Institute for Sustainability and Innovation, College of Engineering and Science, Victoria University, Melbourne, Victoria 8001, Australia
| | - Takeshi Matsuura
- Department of Chemical and Biological Engineering, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Wolfgang M Samhaber
- Institute of Process Engineering, Johannes Kepler University Linz, Altenberger Strasse 69, 4040 Linz, Austria
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19
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Bishoge OK, Zhang L, Suntu SL, Jin H, Zewde AA, Qi Z. Remediation of water and wastewater by using engineered nanomaterials: A review. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2018; 53:537-554. [PMID: 29364029 DOI: 10.1080/10934529.2018.1424991] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Nanotechnology is currently a fast-rising socioeconomic and political knowledge-based technology owing to the unique characteristics of its engineered nanomaterials. This branch of technology is useful for water and wastewater remediation. Many scientists and researchers have been conducting different studies and experiments on the applications of engineered nanomaterials at the local to international level. This review mainly aims to provide a current overview of existing knowledge on engineered nanomaterials and their applications in water and wastewater remediation. Furthermore, the present risks and challenges of nanotechnology are examined.
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Affiliation(s)
- Obadia K Bishoge
- a Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants , Beijing , PR China
- b School of Energy and Environmental Engineering , University of Science and Technology Beijing , Beijing , PR China
| | - Lingling Zhang
- a Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants , Beijing , PR China
- b School of Energy and Environmental Engineering , University of Science and Technology Beijing , Beijing , PR China
| | - Shaldon L Suntu
- c Information Engineering, School of Computer and Communication Technology , University of Science and Technology Beijing , Beijing , PR China
| | - Hui Jin
- a Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants , Beijing , PR China
- b School of Energy and Environmental Engineering , University of Science and Technology Beijing , Beijing , PR China
| | - Abraham A Zewde
- a Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants , Beijing , PR China
- b School of Energy and Environmental Engineering , University of Science and Technology Beijing , Beijing , PR China
| | - Zhongwei Qi
- a Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants , Beijing , PR China
- b School of Energy and Environmental Engineering , University of Science and Technology Beijing , Beijing , PR China
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20
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Bukola S, Liang Y, Korzeniewski C, Harris J, Creager S. Selective Proton/Deuteron Transport through Nafion|Graphene|Nafion Sandwich Structures at High Current Density. J Am Chem Soc 2018; 140:1743-1752. [DOI: 10.1021/jacs.7b10853] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Saheed Bukola
- Department
of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
| | - Ying Liang
- Department
of Chemistry, Texas Tech University, Lubbock, Texas 79409, United States
| | - Carol Korzeniewski
- Department
of Chemistry, Texas Tech University, Lubbock, Texas 79409, United States
| | - Joel Harris
- Department
of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Stephen Creager
- Department
of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
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