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Lishchynskyi O, Shymborska Y, Stetsyshyn Y, Raczkowska J, Skirtach AG, Peretiatko T, Budkowski A. Passive antifouling and active self-disinfecting antiviral surfaces. CHEMICAL ENGINEERING JOURNAL (LAUSANNE, SWITZERLAND : 1996) 2022; 446:137048. [PMID: 35601363 PMCID: PMC9113772 DOI: 10.1016/j.cej.2022.137048] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 05/01/2022] [Accepted: 05/15/2022] [Indexed: 05/15/2023]
Abstract
Viruses pose a serious threat to human health and society in general, as virus infections are one of the main causes of morbidity and mortality. Till May 2022, over 513 million people around the world have been confirmed to be infected and more than 6.2 million have died due to SARS-CoV-2. Although the COVID-19 pandemic will be defeated in the near future, we are likely to face new viral threats in the coming years. One of the important instruments to protect from viruses are antiviral surfaces, which are essentially capable of limiting their spread. The formulation of the concept of antiviral surfaces is relatively new. In general, five types of mechanism directed against virus spread can be proposed for antiviral surfaces; involving: direct and indirect actions, receptor inactivation, photothermal effect, and antifouling behavior. All antiviral surfaces can be classified into two main types - passive and active. Passive antiviral surfaces are based on superhydrophobic coatings that are able to repel virus contaminated droplets. In turn, viruses can become biologically inert (e.g., blocked or destroyed) upon contact with active antiviral surfaces, as they contain antiviral agents: metal atoms, synthetic or natural polymers, and small molecules. The functionality of antiviral surfaces can be significantly improved with additional properties, such as temperature- or pH-responsivity, multifunctionality, non-specific action on different virus types, long-term application, high antiviral efficiency and self-cleaning.
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Affiliation(s)
- Ostap Lishchynskyi
- Lviv Polytechnic National University, St. George's Square 2, 79013 Lviv, Ukraine
- Department of Biotechnology, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
| | - Yana Shymborska
- Lviv Polytechnic National University, St. George's Square 2, 79013 Lviv, Ukraine
- Smoluchowski Institute of Physics, Jagiellonian University, Łojasiewicza 11, 30-348, Kraków, Poland
| | - Yurij Stetsyshyn
- Lviv Polytechnic National University, St. George's Square 2, 79013 Lviv, Ukraine
- Smoluchowski Institute of Physics, Jagiellonian University, Łojasiewicza 11, 30-348, Kraków, Poland
| | - Joanna Raczkowska
- Smoluchowski Institute of Physics, Jagiellonian University, Łojasiewicza 11, 30-348, Kraków, Poland
| | - Andre G Skirtach
- Department of Biotechnology, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
| | - Taras Peretiatko
- Ivan Franko National University of Lviv, Universytetska 1, 79000 Lviv, Ukraine
| | - Andrzej Budkowski
- Smoluchowski Institute of Physics, Jagiellonian University, Łojasiewicza 11, 30-348, Kraków, Poland
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Al-Shatty W, Campana M, Alexander S, Barron AR. Interaction of Surface-Modified Alumina Nanoparticles and Surfactants at an Oil/Water Interface: A Neutron Reflectometry, Scattering, and Enhanced Oil Recovery Study. ACS APPLIED MATERIALS & INTERFACES 2022; 14:19505-19514. [PMID: 35442014 PMCID: PMC9096789 DOI: 10.1021/acsami.2c02228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Accepted: 04/07/2022] [Indexed: 06/14/2023]
Abstract
The evaluation of the mechanism of nanoparticle (NP)/surfactant complex adsorption at the critical oil/water interface was studied. A sophisticated technique (neutron reflectometry) was used to give a unique insight on NP/oil interactions in oil recovery systems. Herein, the adsorption of two modified alumina NPs with different degrees of hydrophobicity [hydrophilic = 2-[2-(2-methoxyethoxy)ethoxy]acetic acid and hydrophobic = octanoic acid (OCT)] stabilized with two different surfactants were studied at the oil/water interface. A thin layer of deuterated (D) and hydrogenated (H) hexadecane (contrast matching silicon substrate) oil was formed on a silicon block by a spin coating freeze process. The distribution of the NPs across the oil/water interface with the CTAB surfactant is similar between the two systems. NPs coated with CTAB have more affinity toward the oil/water interface, which explains the oil recovery increase by around 5% when flooding the core with the OCT-NP/CTAB system compared to the surfactant flooding alone. These results suggest that the NP/surfactant complexes can have potential usage in EOR recovery applications.
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Affiliation(s)
- Wafaa Al-Shatty
- Energy
Safety Research Institute (ESRI), Swansea
University, Bay Campus, Swansea SA1
8EN, U.K.
- Laboratory
and Quality Control Department, Basrah Oil
Company, Bab Al Zubair, Basrah 21240, Iraq
| | - Mario Campana
- Science
and Technology Facilities Council (STFC), ISIS Neutron and Muon Source, Rutherford Appleton Laboratory, Didcot OX11 0QX, U.K.
| | - Shirin Alexander
- Energy
Safety Research Institute (ESRI), Swansea
University, Bay Campus, Swansea SA1
8EN, U.K.
| | - Andrew R. Barron
- Energy
Safety Research Institute (ESRI), Swansea
University, Bay Campus, Swansea SA1
8EN, U.K.
- Arizona
Institute for Resilient Environments and Societies (AIRES), University of Arizona, Tucson, Arizona 85721, United States
- Department
of Chemistry and Department of Materials Science and Nanoengineering, Rice University, Houston, Texas 77005, United States
- Faculty of
Engineering, Universiti Teknologi Brunei, Bandar Seri Begawani BE1410 Brunei Darussalam
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Ma C, Nikiforov A, De Geyter N, Dai X, Morent R, Ostrikov KK. Future antiviral polymers by plasma processing. Prog Polym Sci 2021; 118:101410. [PMID: 33967350 PMCID: PMC8085113 DOI: 10.1016/j.progpolymsci.2021.101410] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 01/11/2021] [Accepted: 04/22/2021] [Indexed: 12/31/2022]
Abstract
Coronavirus disease 2019 (COVID-19) is largely threatening global public health, social stability, and economy. Efforts of the scientific community are turning to this global crisis and should present future preventative measures. With recent trends in polymer science that use plasma to activate and enhance the functionalities of polymer surfaces by surface etching, surface grafting, coating and activation combined with recent advances in understanding polymer-virus interactions at the nanoscale, it is promising to employ advanced plasma processing for smart antiviral applications. This trend article highlights the innovative and emerging directions and approaches in plasma-based surface engineering to create antiviral polymers. After introducing the unique features of plasma processing of polymers, novel plasma strategies that can be applied to engineer polymers with antiviral properties are presented and critically evaluated. The challenges and future perspectives of exploiting the unique plasma-specific effects to engineer smart polymers with virus-capture, virus-detection, virus-repelling, and/or virus-inactivation functionalities for biomedical applications are analysed and discussed.
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Key Words
- ACE2, angiotensin-converting enzyme 2
- Antiviral polymers
- BSA, bovine serum albumin
- CF4, tetrafluoromethane
- COVID-19, coronavirus disease 2019
- DC, direct current
- H2, hydrogen
- HBV, hepatitis B virus
- HMDSO, hexamethyldisiloxane
- IPNpp, plasma polymerized isopentyl nitrite
- MERS-CoV, middle east respiratory syndrome
- MW, microwave
- NO, nitric oxide
- PC, polycarbonate
- PDMS, polydimethylsiloxane
- PECVD, plasma-enhanced chemical vapour deposition
- PEG, polyethene glycol
- PET, polyethene terephthalate
- PFM, pentafluorophenyl methacrylate
- PP, polypropylene
- PPE, personal protective equipment
- PS, polystyrene
- PTFE, polytetrafluoroethylene
- PVC, polyvinyl chloride
- REF, reference
- RF, radio frequency
- RONS, reactive oxygen and nitrogen species
- RSV, respiratory syncytial virus
- RT-PCR, reverse transcription-polymerase chain reaction
- RV, rhinovirus
- SARS-CoV-2, severe acute respiratory syndrome coronavirus 2
- SEM, scanning electron microscopy
- TEOS-O2, tetraethyl orthosilicate and oxygen
- UV, ultraviolet
- WCA, water contact angle
- plasma processing
- surface modification
- ΔD, the variation of the dissipation
- Δf, the frequency shift
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Affiliation(s)
- Chuanlong Ma
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41, B4, 9000 Ghent, Belgium
| | - Anton Nikiforov
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41, B4, 9000 Ghent, Belgium
| | - Nathalie De Geyter
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41, B4, 9000 Ghent, Belgium
| | - Xiaofeng Dai
- Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China
- Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, China
| | - Rino Morent
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41, B4, 9000 Ghent, Belgium
| | - Kostya Ken Ostrikov
- School of Chemistry and Physics and QUT Centre for Materials Science, Queensland University of Technology (QUT), 4000 Brisbane, Australia
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Zhao J, Yan P, Snow B, Santos RM, Chiang YW. Micro-structured copper and nickel metal foams for wastewater disinfection: proof-of-concept and scale-up. PROCESS SAFETY AND ENVIRONMENTAL PROTECTION : TRANSACTIONS OF THE INSTITUTION OF CHEMICAL ENGINEERS, PART B 2020; 142:191-202. [PMID: 32572308 PMCID: PMC7293508 DOI: 10.1016/j.psep.2020.06.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 06/05/2020] [Accepted: 06/08/2020] [Indexed: 05/03/2023]
Abstract
It is necessary to disinfect treated wastewater prior to discharge to reduce exposure risks to humans and the environment. The currently practiced wastewater disinfection technologies are challenged by toxic by-products, chemicals and energy demand, a range of effectiveness limitations, among other concerns. An effective, eco-friendly, and energy-efficient alternative disinfection technique is desirable to modernize and enhance wastewater treatment operations. Copper and nickel micro-structured metal foams, and a conventional copper mesh, were evaluated as disinfecting surfaces for treating secondary-treated wastewater contaminated with coliform bacteria. The micro-structured copper foam was adopted for scale-up study, due to its stable and satisfactory bactericidal performance obtained over a wide range of bacterial concentrations and metal-to-liquid ratios. Three scales of experiments, using two types of reactor designs, were performed using municipal wastewater to determine the optimal scale-up factors: small lab-scale batch reactor, intermediate lab-scale batch reactor, and pilot-scale continuous tubular reactor experiments. The performance was evaluated with the aim of minimizing metal material requirement with respect to bactericidal efficiency and leaching risks at all scales. Copper foam, at or above optimal conditions, consistently inactivated over 95 % of total coliforms, fecal coliforms and E.coli in wastewater at various scales, and leachate copper concentrations were determined to be below Canadian guideline values for outfall. This study successfully implemented the "structure" strategy of process intensification, and opens up the possibility to apply micro-structured copper foam in a range of other water disinfection systems, from pre-treatment to point-of-use, and should thus become a topic of further research.
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Affiliation(s)
- Jinghan Zhao
- School of Engineering, University of Guelph, 50 Stone Road East, Guelph, ON, N1G 2W1, Canada
| | - Peihua Yan
- School of Engineering, University of Guelph, 50 Stone Road East, Guelph, ON, N1G 2W1, Canada
| | - Benjamin Snow
- School of Engineering, University of Guelph, 50 Stone Road East, Guelph, ON, N1G 2W1, Canada
| | - Rafael M Santos
- School of Engineering, University of Guelph, 50 Stone Road East, Guelph, ON, N1G 2W1, Canada
| | - Yi Wai Chiang
- School of Engineering, University of Guelph, 50 Stone Road East, Guelph, ON, N1G 2W1, Canada
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5
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Synthesis and characterization maleate-alumoxane nanoparticles for removal of reactive yellow 84 dye from aqueous solution. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2020.02.040] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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6
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Shafiq M, Anjum S, Hano C, Anjum I, Abbasi BH. An Overview of the Applications of Nanomaterials and Nanodevices in the Food Industry. Foods 2020; 9:E148. [PMID: 32028580 PMCID: PMC7074443 DOI: 10.3390/foods9020148] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 01/21/2020] [Accepted: 01/26/2020] [Indexed: 12/31/2022] Open
Abstract
The efficient progress in nanotechnology has transformed many aspects of food science and the food industry with enhanced investment and market share. Recent advances in nanomaterials and nanodevices such as nanosensors, nano-emulsions, nanopesticides or nanocapsules are intended to bring about innovative applications in the food industry. In this review, the current applications of nanotechnology for packaging, processing, and the enhancement of the nutritional value and shelf life of foods are targeted. In addition, the functionality and applicability of food-related nanotechnologies are also highlighted and critically discussed in order to provide an insight into the development and evaluation of the safety of nanotechnology in the food industry.
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Affiliation(s)
- Mehwish Shafiq
- Department of Biotechnology, Kinnaird College for Women, Lahore 54000, Pakistan; (M.S.); (I.A.)
| | - Sumaira Anjum
- Department of Biotechnology, Kinnaird College for Women, Lahore 54000, Pakistan; (M.S.); (I.A.)
| | - Christophe Hano
- Laboratoire de Biologie des Ligneux et des Grandes Cultures, INRA USC1328/Université d’Orléans, 28000 Chartres, France;
| | - Iram Anjum
- Department of Biotechnology, Kinnaird College for Women, Lahore 54000, Pakistan; (M.S.); (I.A.)
| | - Bilal Haider Abbasi
- Department of Biotechnology, Quaid-i-Azam University, Islamabad 45320, Pakistan
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7
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Hill D, Barron AR, Alexander S. Comparison of hydrophobicity and durability of functionalized aluminium oxide nanoparticle coatings with magnetite nanoparticles-links between morphology and wettability. J Colloid Interface Sci 2019; 555:323-330. [PMID: 31394319 DOI: 10.1016/j.jcis.2019.07.080] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 07/25/2019] [Accepted: 07/27/2019] [Indexed: 02/02/2023]
Abstract
HYPOTHESIS The wetting characteristics of coatings created using functionalised nanoparticles and adhesive resins, depends strongly on the particle distribution within the surface layers. Although it has been shown that commercially available adhesives improve the durability of hydrophobic nanoparticle coatings, the wettability of these surfaces is governed by the agglomeration behaviour of the particles within the adhesive. As a consequence of this, coatings where the particles are highly agglomerated within the adhesive show lower hydrophobicity. EXPERIMENTS The morphology and chemical composition of coatings formed from carboxylate functionalised Al2O3 and magnetite (Fe3O4) nanoparticles and epoxy resin on plastic was studied using scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). Water contact angle (WCA) measurements were used to investigate how the coatings' morphological characteristics and loading of the particles within the surface layers influenced their wettability. Infrared (IR) spectroscopy and thermogravimetric analysis (TGA) were used to study carboxylate adsorption onto the magnetite nanoparticles. FINDINGS Combining the Al2O3 nanoparticles with epoxy resin was observed to create highly hydrophobic coatings that displayed water contact angles (WCAs) between 145 and 150°. These coatings displayed good durability when sonicated in isopropanol and wiped with tissue. By comparison, coatings formed from the magnetite nanoparticles were substantially less hydrophobic and displayed WCAs between 75 and 125° when combined with epoxy resin. SEM revealed that the magnetite nanoparticles in the coatings were present as large agglomerates. By comparison, coatings formed from the Al2O3 nanoparticles showed a more homogenous particle distribution. Furthermore, XPS showed that the resin engulfed the magnetite nanoparticles to a far greater extent. The difference in wetting behaviour of these coatings is largely attributed to their different morphologies, since the particles are similar sizes and TGA shows that the particles possess similar carboxylate grafting densities. The uneven distribution of nanoparticles in the magnetite/epoxy resin coating is due to the particles' magnetic properties, which drive nanoparticle agglomeration as the coatings solidify. This work demonstrates that it is important to consider inter-particle interactions when fabricating low wettability composite coatings.
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Affiliation(s)
- Donald Hill
- Energy Safety Research Institute (ESRI), Swansea University Bay Campus, Fabian Way, Swansea SA1 8EN, United Kingdom
| | - Andrew R Barron
- Energy Safety Research Institute (ESRI), Swansea University Bay Campus, Fabian Way, Swansea SA1 8EN, United Kingdom; Department of Chemistry, Rice University, Houston, TX 77005, United States; Department of Materials Science and Nanoengineering, Rice University, Houston, TX 77005, United States
| | - Shirin Alexander
- Energy Safety Research Institute (ESRI), Swansea University Bay Campus, Fabian Way, Swansea SA1 8EN, United Kingdom.
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8
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Moradi G, Dabirian F, Mohammadi P, Rajabi L, Babaei M, Shiri N. Electrospun fumarate ferroxane/polyacrylonitrile nanocomposite nanofibers adsorbent for lead removal from aqueous solution: Characterization and process optimization by response surface methodology. Chem Eng Res Des 2018. [DOI: 10.1016/j.cherd.2017.09.022] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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9
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Maguire-Boyle SJ, Huseman JE, Ainscough TJ, Oatley-Radcliffe DL, Alabdulkarem AA, Al-Mojil SF, Barron AR. Superhydrophilic Functionalization of Microfiltration Ceramic Membranes Enables Separation of Hydrocarbons from Frac and Produced Water. Sci Rep 2017; 7:12267. [PMID: 28947793 PMCID: PMC5612970 DOI: 10.1038/s41598-017-12499-w] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 09/11/2017] [Indexed: 11/08/2022] Open
Abstract
The environmental impact of shale oil and gas production by hydraulic fracturing (fracking) is of increasing concern. The biggest potential source of environmental contamination is flowback and produced water, which is highly contaminated with hydrocarbons, bacteria and particulates, meaning that traditional membranes are readily fouled. We show the chemical functionalisation of alumina ceramic microfiltration membranes (0.22 μm pore size) with cysteic acid creates a superhydrophilic surface, allowing for separation of hydrocarbons from frac and produced waters without fouling. The single pass rejection coefficients was >90% for all samples. The separation of hydrocarbons from water when the former have hydrodynamic diameters smaller than the pore size of the membrane is due to the zwitter ionically charged superhydrophilic pore surface. Membrane fouling is essentially eliminated, while a specific flux is obtained at a lower pressure (<2 bar) than that required achieving the same flux for the untreated membrane (4-8 bar).
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Affiliation(s)
| | - Joseph E Huseman
- Department of Chemistry, Rice University, Houston, Texas, 77007, USA
| | - Thomas J Ainscough
- Energy Safety Research Institute, Swansea University, Bay Campus, Swansea, SA1 8EN, Wales, UK
| | | | - Abdullah A Alabdulkarem
- Mechanical Engineering Department, College of Engineering, King Saud University, Riyadh, 11421, Saudi Arabia
| | - Sattam Fahad Al-Mojil
- Department of Civil Engineering, College of Engineering, King Saud University, Riyadh, 11421, Saudi Arabia
| | - Andrew R Barron
- Department of Chemistry, Rice University, Houston, Texas, 77007, USA.
- Energy Safety Research Institute, Swansea University, Bay Campus, Swansea, SA1 8EN, Wales, UK.
- Department of Materials Science and Nanoengineering, Rice University, Houston, Texas, 77007, USA.
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Al-Shatty W, Lord AM, Alexander S, Barron AR. Tunable Surface Properties of Aluminum Oxide Nanoparticles from Highly Hydrophobic to Highly Hydrophilic. ACS OMEGA 2017; 2:2507-2514. [PMID: 31457596 PMCID: PMC6641041 DOI: 10.1021/acsomega.7b00279] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Accepted: 05/23/2017] [Indexed: 06/07/2023]
Abstract
The formation of materials with tunable wettability is important for applications ranging from antifouling to waterproofing surfaces. We report the use of various low-cost and nonhazardous hydrocarbon materials to tune the surface properties of aluminum oxide nanoparticles (NPs) from superhydrophilic to superhydrophobic through covalent functionalization. The hydrocarbon surfaces are compared with a fluorinated surface for wettability and surface energy properties. The role of NPs' hydrophobicity on their dynamic interfacial behavior at the oil-water interface and their ability to form stable emulsions is also explored. The spray-coated NPs provide textured surfaces (regardless of functionality), with water contact angles (θ) of 10-150° based on their surface functionality. The superhydrophobic NPs are able to reduce the interfacial tension of various oil-water interfaces by behaving as surfactants.
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Affiliation(s)
- Wafaa Al-Shatty
- Energy
Safety Research Institute (ESRI), College
of Engineering, Swansea University, Bay Campus, Fabian Way, Swansea, SA1 8EN Wales, U.K.
| | - Alex M. Lord
- Centre
for Nanohealth (CNH), College of Engineering, Swansea University, Singleton Park, Swansea, SA2 8PP Wales, U.K.
| | - Shirin Alexander
- Energy
Safety Research Institute (ESRI), College
of Engineering, Swansea University, Bay Campus, Fabian Way, Swansea, SA1 8EN Wales, U.K.
| | - Andrew R. Barron
- Energy
Safety Research Institute (ESRI), College
of Engineering, Swansea University, Bay Campus, Fabian Way, Swansea, SA1 8EN Wales, U.K.
- Department
of Chemistry, Rice University, 6100 S Main Street, Houston, 77005 Texas, United States
- Department
of Materials Science and Nanoengineering, Rice University, 6100
Main MS-325, Houston, 77005 Texas, United States
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11
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Flux, antifouling and separation characteristics enhancement of nanocomposite polyethersulfone mixed-matrix membrane by embedding synthesized hydrophilic adipate ferroxane nanoparticles. KOREAN J CHEM ENG 2017. [DOI: 10.1007/s11814-017-0031-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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12
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Alexander S, Eastoe J, Lord AM, Guittard F, Barron AR. Branched Hydrocarbon Low Surface Energy Materials for Superhydrophobic Nanoparticle Derived Surfaces. ACS APPLIED MATERIALS & INTERFACES 2016; 8:660-666. [PMID: 26641156 DOI: 10.1021/acsami.5b09784] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We present a new class of superhydrophobic surfaces created from low-cost and easily synthesized aluminum oxide nanoparticles functionalized carboxylic acids having highly branched hydrocarbon (HC) chains. These branched chains are new low surface energy materials (LSEMs) which can replace environmentally hazardous and expensive fluorocarbons (FCs). Regardless of coating method and curing temperature, the resulting textured surfaces develop water contact angles (θ) of ∼155° and root-mean-square roughnesses (Rq) ≈ 85 nm, being comparable with equivalent FC functionalized surfaces (θ = 157° and Rq = 100 nm). The functionalized nanoparticles may be coated onto a variety of substrates to generate different superhydrophobic materials.
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Affiliation(s)
- Shirin Alexander
- Energy Safety Research Institute (ESRI), Swansea University Bay Campus , Fabian Way, Swansea SA1 8EN, United Kingdom
| | - Julian Eastoe
- School of Chemistry, University of Bristol , Bristol BS8 1TS, United Kingdom
| | - Alex M Lord
- Centre for Nanohealth (CNH), College of Engineering, Swansea University , Singleton Park, SA2 8PP Wales, United Kingdom
| | - Frédéric Guittard
- Group Surfaces & Interfaces, University of Nice Sophia Antipolis and CNRS, LPMC , Parc Valrose, 06100 Nice, France
| | - Andrew R Barron
- Energy Safety Research Institute (ESRI), Swansea University Bay Campus , Fabian Way, Swansea SA1 8EN, United Kingdom
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13
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Barron AR. The interaction of carboxylic acids with aluminium oxides: journeying from a basic understanding of alumina nanoparticles to water treatment for industrial and humanitarian applications. Dalton Trans 2015; 43:8127-43. [PMID: 24728503 DOI: 10.1039/c4dt00504j] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Carboxylic acids are found to react with aluminium oxides via a topotactic reaction such that the carboxylate acts as a bridging ligand. This reaction allows for carboxylate-functionalized alumina nanoparticles to be prepared directly from boehmite (AlOOH). Understanding the structural relationship between molecular and surface species allows for the rationalization/prediction of suitable alternative ligands as well as alternative oxide surfaces. The identity of the carboxylate substituent controls the pH stability of a nanoparticle as well as the porosity and processability of ceramics prepared by thermolysis. Through the choice of functional groups on the carboxylic acid the properties of the alumina surface or alumina nanoparticle can be tailored. For example, the solubility/miscibility of nanoparticles can be tuned to the solvent/matrix, and the wettability to be varied from hydrophobic to super hydrophilic. The choice Zwitter ionic substituents on alumina micro-/ultra-filtration membranes are found to enhance the flux and limit fouling while allowing for the facile separation of organic compounds from water. Examples are presented of purification of frac and flow-back water from oil well production as well as providing drinking water from contaminated sources in underdeveloped regions.
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Affiliation(s)
- Andrew R Barron
- Department of Chemistry, Rice University, Houston, Texas 77005, USA.
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14
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Willhite CC, Karyakina NA, Yokel RA, Yenugadhati N, Wisniewski TM, Arnold IMF, Momoli F, Krewski D. Systematic review of potential health risks posed by pharmaceutical, occupational and consumer exposures to metallic and nanoscale aluminum, aluminum oxides, aluminum hydroxide and its soluble salts. Crit Rev Toxicol 2014; 44 Suppl 4:1-80. [PMID: 25233067 PMCID: PMC4997813 DOI: 10.3109/10408444.2014.934439] [Citation(s) in RCA: 239] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Abstract Aluminum (Al) is a ubiquitous substance encountered both naturally (as the third most abundant element) and intentionally (used in water, foods, pharmaceuticals, and vaccines); it is also present in ambient and occupational airborne particulates. Existing data underscore the importance of Al physical and chemical forms in relation to its uptake, accumulation, and systemic bioavailability. The present review represents a systematic examination of the peer-reviewed literature on the adverse health effects of Al materials published since a previous critical evaluation compiled by Krewski et al. (2007) . Challenges encountered in carrying out the present review reflected the experimental use of different physical and chemical Al forms, different routes of administration, and different target organs in relation to the magnitude, frequency, and duration of exposure. Wide variations in diet can result in Al intakes that are often higher than the World Health Organization provisional tolerable weekly intake (PTWI), which is based on studies with Al citrate. Comparing daily dietary Al exposures on the basis of "total Al"assumes that gastrointestinal bioavailability for all dietary Al forms is equivalent to that for Al citrate, an approach that requires validation. Current occupational exposure limits (OELs) for identical Al substances vary as much as 15-fold. The toxicity of different Al forms depends in large measure on their physical behavior and relative solubility in water. The toxicity of soluble Al forms depends upon the delivered dose of Al(+3) to target tissues. Trivalent Al reacts with water to produce bidentate superoxide coordination spheres [Al(O2)(H2O4)(+2) and Al(H2O)6 (+3)] that after complexation with O2(•-), generate Al superoxides [Al(O2(•))](H2O5)](+2). Semireduced AlO2(•) radicals deplete mitochondrial Fe and promote generation of H2O2, O2 (•-) and OH(•). Thus, it is the Al(+3)-induced formation of oxygen radicals that accounts for the oxidative damage that leads to intrinsic apoptosis. In contrast, the toxicity of the insoluble Al oxides depends primarily on their behavior as particulates. Aluminum has been held responsible for human morbidity and mortality, but there is no consistent and convincing evidence to associate the Al found in food and drinking water at the doses and chemical forms presently consumed by people living in North America and Western Europe with increased risk for Alzheimer's disease (AD). Neither is there clear evidence to show use of Al-containing underarm antiperspirants or cosmetics increases the risk of AD or breast cancer. Metallic Al, its oxides, and common Al salts have not been shown to be either genotoxic or carcinogenic. Aluminum exposures during neonatal and pediatric parenteral nutrition (PN) can impair bone mineralization and delay neurological development. Adverse effects to vaccines with Al adjuvants have occurred; however, recent controlled trials found that the immunologic response to certain vaccines with Al adjuvants was no greater, and in some cases less than, that after identical vaccination without Al adjuvants. The scientific literature on the adverse health effects of Al is extensive. Health risk assessments for Al must take into account individual co-factors (e.g., age, renal function, diet, gastric pH). Conclusions from the current review point to the need for refinement of the PTWI, reduction of Al contamination in PN solutions, justification for routine addition of Al to vaccines, and harmonization of OELs for Al substances.
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Affiliation(s)
- Calvin C. Willhite
- Risk Sciences International, Ottawa, ON, Canada
- McLaughlin Centre for Population Health Risk Assessment, Ottawa, ON, Canada
| | | | - Robert A. Yokel
- Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky, USA
| | | | - Thomas M. Wisniewski
- Departments of Neurology, Psychiatry and Pathology, New York University School of Medicine, New York City, New York, USA
| | - Ian M. F. Arnold
- Occupational Health Program, Faculty of Medicine, McGill University, Montreal, QC, Canada
| | - Franco Momoli
- Ottawa Hospital Research Institute, Ottawa, ON, Canada
- Department of Epidemiology and Community Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
- Children’s Hospital of Eastern Ontario Research Institute, Ottawa, ON, Canada
| | - Daniel Krewski
- Risk Sciences International, Ottawa, ON, Canada
- McLaughlin Centre for Population Health Risk Assessment, Ottawa, ON, Canada
- Department of Epidemiology and Community Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
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Moattari RM, Rahimi S, Rajabi L, Derakhshan AA, Keyhani M. Statistical investigation of lead removal with various functionalized carboxylate ferroxane nanoparticles. JOURNAL OF HAZARDOUS MATERIALS 2014; 283:276-291. [PMID: 25285999 DOI: 10.1016/j.jhazmat.2014.08.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 08/04/2014] [Accepted: 08/07/2014] [Indexed: 06/03/2023]
Abstract
Four new types of carboxylate-ferroxane nanoparticles, namely; maleate ferroxane (MF), fumarateferroxane (FF), para-amino benzoate ferroxane (PABF) and para-hydroxy benzoate ferroxane (PHBF) were synthesized, characterized and used for lead removal from aqueous solutions. Lepidocrocite nanoparticles were also synthesized and characterized asa precursorforcarboxylate-ferroxanes. FTIR, SEM and DLS analysis characterized the synthesized samplesand final Pb(II) concentration were analysed using inductively coupled plasma atomic emission spectrometer. Performance evaluation of the nanoparticlesin adsorption process was achieved using Taguchi experimental design. Variables in adsorption process were initial pH, contact time, adsorbent dose, adsorbent typeand initial concentration of Pb(2+) ions. The initial Pb(II) concentration was the most influential factor in the adsorption process among the five factors. Adsorption of lead was performed through two possible mechanisms; ion exchange and complex formation. Maleate ferroxane performed the best lead removal efficiency among the four types of ferroxane nanostructures studied. The adsorption kinetic data described well with a pseudo-second-order model and the equilibrium data fitted well to the Frendlich isotherm.
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Affiliation(s)
- Rozita M Moattari
- Polymer Research Lab., Department of Chemical Engineering, College of Engineering, Razi University, Kermanshah, Iran
| | - Safoora Rahimi
- Polymer Research Lab., Department of Chemical Engineering, College of Engineering, Razi University, Kermanshah, Iran
| | - Laleh Rajabi
- Polymer Research Lab., Department of Chemical Engineering, College of Engineering, Razi University, Kermanshah, Iran.
| | - Ali Ashraf Derakhshan
- Young Researchers Club, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran
| | - Mohammad Keyhani
- Polymer Research Lab., Department of Chemical Engineering, College of Engineering, Razi University, Kermanshah, Iran
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