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Fernandes T, Daniel-da-Silva AL, Trindade T. Metal-dendrimer hybrid nanomaterials for sensing applications. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214483] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Rosário F, Costa C, Lopes CB, Estrada AC, Tavares DS, Pereira E, Teixeira JP, Reis AT. In Vitro Hepatotoxic and Neurotoxic Effects of Titanium and Cerium Dioxide Nanoparticles, Arsenic and Mercury Co-Exposure. Int J Mol Sci 2022; 23:ijms23052737. [PMID: 35269878 PMCID: PMC8910921 DOI: 10.3390/ijms23052737] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 02/24/2022] [Accepted: 02/25/2022] [Indexed: 02/04/2023] Open
Abstract
Considering the increasing emergence of new contaminants, such as nanomaterials, mixing with legacy contaminants, including metal(loid)s, it becomes imperative to understand the toxic profile resulting from these interactions. This work aimed at assessing and comparing the individual and combined hepatotoxic and neurotoxic potential of titanium dioxide nanoparticles (TiO2NPs 0.75–75 mg/L), cerium oxide nanoparticles (CeO2NPs 0.075–10 μg/L), arsenic (As 0.01–2.5 mg/L), and mercury (Hg 0.5–100 mg/L) on human hepatoma (HepG2) and neuroblastoma (SH-SY5Y) cells. Viability was assessed through WST-1 (24 h) and clonogenic (7 days) assays and it was affected in a dose-, time- and cell-dependent manner. Higher concentrations caused greater toxicity, while prolonged exposure caused inhibition of cell proliferation, even at low concentrations, for both cell lines. Cell cycle progression, explored by flow cytometry 24 h post-exposure, revealed that TiO2NPs, As and Hg but not CeO2NPs, changed the profiles of SH-SY5Y and HepG2 cells in a dose-dependent manner, and that the cell cycle was, overall, more affected by exposure to mixtures. Exposure to binary mixtures revealed either potentiation or antagonistic effects depending on the composition, cell type and time of exposure. These findings prove that joint toxicity of contaminants cannot be disregarded and must be further explored.
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Affiliation(s)
- Fernanda Rosário
- EPIUnit—Instituto de Saúde Pública, Universidade do Porto, 4050-600 Porto, Portugal; (F.R.); (J.P.T.); (A.T.R.)
- Laboratório para a Investigação Integrativa e Translacional em Saúde Populacional (ITR), 4050-600 Porto, Portugal
- Department of Environmental Health, Portuguese National Institute of Health, Rua Alexandre Herculano 321, 4000-055 Porto, Portugal
| | - Carla Costa
- EPIUnit—Instituto de Saúde Pública, Universidade do Porto, 4050-600 Porto, Portugal; (F.R.); (J.P.T.); (A.T.R.)
- Laboratório para a Investigação Integrativa e Translacional em Saúde Populacional (ITR), 4050-600 Porto, Portugal
- Department of Environmental Health, Portuguese National Institute of Health, Rua Alexandre Herculano 321, 4000-055 Porto, Portugal
- Correspondence:
| | - Cláudia B. Lopes
- Department of Chemistry and Aveiro Institute of Materials (CICECO), University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal; (C.B.L.); (A.C.E.); (D.S.T.)
| | - Ana C. Estrada
- Department of Chemistry and Aveiro Institute of Materials (CICECO), University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal; (C.B.L.); (A.C.E.); (D.S.T.)
| | - Daniela S. Tavares
- Department of Chemistry and Aveiro Institute of Materials (CICECO), University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal; (C.B.L.); (A.C.E.); (D.S.T.)
- Department of Chemistry and Center of Environmental and Marine Studies (CESAM), University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
| | - Eduarda Pereira
- LAQV-REQUIMTE—Associated Laboratory for Green Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal;
| | - João Paulo Teixeira
- EPIUnit—Instituto de Saúde Pública, Universidade do Porto, 4050-600 Porto, Portugal; (F.R.); (J.P.T.); (A.T.R.)
- Laboratório para a Investigação Integrativa e Translacional em Saúde Populacional (ITR), 4050-600 Porto, Portugal
- Department of Environmental Health, Portuguese National Institute of Health, Rua Alexandre Herculano 321, 4000-055 Porto, Portugal
| | - Ana Teresa Reis
- EPIUnit—Instituto de Saúde Pública, Universidade do Porto, 4050-600 Porto, Portugal; (F.R.); (J.P.T.); (A.T.R.)
- Laboratório para a Investigação Integrativa e Translacional em Saúde Populacional (ITR), 4050-600 Porto, Portugal
- Department of Environmental Health, Portuguese National Institute of Health, Rua Alexandre Herculano 321, 4000-055 Porto, Portugal
- CIIMAR—Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos S/N, 4450-208 Matosinhos, Portugal
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Template-Assisted Iron Nanowire Formation at Different Electrolyte Temperatures. MATERIALS 2021; 14:ma14154080. [PMID: 34361274 PMCID: PMC8348010 DOI: 10.3390/ma14154080] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 07/08/2021] [Accepted: 07/16/2021] [Indexed: 11/17/2022]
Abstract
We studied the morphology, structure, and magnetic properties of Fe nanowires that were electrodeposited as a function of the electrolyte temperature. The nucleation mechanism followed instantaneous growth. At low temperatures, we observed an increase of the total charge reduced into the templates, thus suggesting a significant increase in the degree of pore filling. Scanning electron microscopy images revealed smooth nanowires without any characteristic features that would differentiate their morphology as a function of the electrolyte temperature. X-ray photoelectron spectroscopy studies indicated the presence of a polycarbonate coating that covered the nanowires and protected them against oxidation. The X-ray diffraction measurements showed peaks coming from the polycrystalline Fe bcc structure without any traces of the oxide phases. The crystallite size decreased with an increasing electrolyte temperature. The transmission electron microscopy measurements proved the fine-crystalline structure and revealed elongated crystallite shapes with a columnar arrangement along the nanowire. Mössbauer studies indicated a deviation in the magnetization vector from the normal direction, which agrees with the SQUID measurements. An increase in the electrolyte temperature caused a rise in the out of the membrane plane coercivity. The studies showed the oxidation resistance of the Fe nanowires deposited at elevated electrolyte temperatures.
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Liu Y, Zhao Y, Cheng W, Zhang T. Targeted reclaiming cationic dyes from dyeing wastewater with a dithiocarbamate-functionalized material through selective adsorption and efficient desorption. J Colloid Interface Sci 2020; 579:766-777. [DOI: 10.1016/j.jcis.2020.06.083] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 06/19/2020] [Accepted: 06/20/2020] [Indexed: 01/19/2023]
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Nogueira V, Sousa CT, Araujo JP, Pereira R. Evaluation of the toxicity of nickel nanowires to freshwater organisms at concentrations and short-term exposures compatible with their application in water treatment. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2020; 227:105595. [PMID: 32911330 DOI: 10.1016/j.aquatox.2020.105595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 07/20/2020] [Accepted: 08/07/2020] [Indexed: 06/11/2023]
Abstract
In order to understand the potential impacts of nickel nanowires (Ni NWs) after reaching the aquatic environment, this research evaluated the toxicity of Ni NWs with different lengths (≤ 1.1, ≤11 and ≤ 80 μm) for several floating, planktonic and nektonic freshwater organisms. In this work, Ni NWs were synthesized by electrodeposition using anodized aluminum oxide (AAO) membranes. The toxicity of the NWs was assessed using a battery of aquatic species representative of key functions at the ecosystem level: the bacterium Aliivibrio fischeri, the algae Raphidocelis subcapitata, the macrophyte Lemna minor, the crustacean Daphnia magna and the zebrafish Danio rerio. Results indicated that for the concentrations tested (up to 2.5 mg L-1) the synthesized Ni NWs showed low toxicity. And although no lethal toxicity was observed for D. magna, at a sublethal level the feeding activity of the freshwater cladoceran was severely affected after exposure to Ni NWs. These findings showed that NWs can be accumulated in the gut of D. magna, even during a short exposure (24 h) directly impairing Daphnia nutrition and eventually populations growth. Consequently, this can also contribute to trophic transfer of NWs along the food chain. According to our results the toxicity of Ni NW may be mainly attributed to physical effects rather than chemical effects of Ni ions, considering that the concentrations of Ni NWs tested in this study were well below the toxicity thresholds reported in the literature for Ni ions and for Ni NMs.
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Affiliation(s)
- V Nogueira
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR) and Faculty of Sciences of the University of Porto, Rua do campo Alegre s/n, Porto, Portugal.
| | - C T Sousa
- Institute of Physics for Advanced Materials, Nanotechnology and Photonics (IFIMUP), Department Physics and Astronomy, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 678, 4169-007 Porto, Portugal.
| | - J P Araujo
- Institute of Physics for Advanced Materials, Nanotechnology and Photonics (IFIMUP), Department Physics and Astronomy, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 678, 4169-007 Porto, Portugal.
| | - R Pereira
- Sustainable Agrifood Production Research Center (GreenUPorto) and Faculty of Sciences of the University of Porto, Rua do campo Alegre s/n, Porto, Portugal.
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Awad FS, AbouZied KM, Abou El-Maaty WM, El-Wakil AM, Samy El-Shall M. Effective removal of mercury(II) from aqueous solutions by chemically modified graphene oxide nanosheets. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2018.06.018] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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Afonso EL, Carvalho L, Fateixa S, Amorim CO, Amaral VS, Vale C, Pereira E, Silva CM, Trindade T, Lopes CB. Can contaminated waters or wastewater be alternative sources for technology-critical elements? The case of removal and recovery of lanthanides. JOURNAL OF HAZARDOUS MATERIALS 2019; 380:120845. [PMID: 31323490 DOI: 10.1016/j.jhazmat.2019.120845] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 06/25/2019] [Accepted: 06/28/2019] [Indexed: 06/10/2023]
Abstract
Technology critical elements (TCE) are considered the vitamins of nowadays technology. Factors such as high demand, limited sources and geopolitical pressures, mining exploitation and its negative impact, point these elements as new emerging contaminants and highlight the importance for removal and recycling TCE from contaminated waters. This paper reports the synthesis, characterization and application of hybrid nanostructures to remove and recover lanthanides from water, promoting the recycling of these high value elements. The nanocomposite combines the interesting properties of graphite nanoplatelets, with the magnetic properties of magnetite, and exhibits good sorption properties towards La(III), Eu(III) and Tb(III). The sorption process was very sensitive to solution pH, evidencing that electrostatic interactions are the main binding mechanism involved. Removal efficiencies up to 80% were achieved at pH 8, using only 50 mg/L of nanocomposite. In ternary solution, occurred a preferential removal of Eu(III) and Tb(III). The equilibrium evidenced a rare but interesting behaviour, and as a proof-of-concept the recoveries and reutilization rates, at consecutive cycles, highlight the recyclability of the composite without loss of efficiency. This study evidences that surface charge and the number of active sites of the composite controls the removal process, providing new insights on the interactions between lanthanoids and magnetic-graphite-nanoplatelets.
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Affiliation(s)
- Elisabete Luís Afonso
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Lina Carvalho
- Central Laboratory of Analysis (LCA), University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal
| | - Sara Fateixa
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Carlos Oliveira Amorim
- CICECO - Aveiro Institute of Materials, Department of Physics, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Vitor S Amaral
- CICECO - Aveiro Institute of Materials, Department of Physics, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Carlos Vale
- CIIMAR - Interdisciplinary Centre of Marine and Environmental Research, Av. General Norton de Matos s/n, 4450-208, Matosinhos, Portugal
| | - Eduarda Pereira
- CESAM & LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Carlos Manuel Silva
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Tito Trindade
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Cláudia Batista Lopes
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal.
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Patel K, Singh N, Nayak JM, Jha B, Sahoo SK, Kumar R. Environmentally Friendly Inorganic Magnetic Sulfide Nanoparticles for Efficient Adsorption-Based Mercury Remediation from Aqueous Solution. ChemistrySelect 2018. [DOI: 10.1002/slct.201702851] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Khushbu Patel
- Department of Applied Chemistry; S.V. National Institute of Technology; Surat- 395007 India
| | - Nimisha Singh
- Department of Applied Chemistry; S.V. National Institute of Technology; Surat- 395007 India
| | - Jyotsna M. Nayak
- Department of Applied Chemistry; S.V. National Institute of Technology; Surat- 395007 India
| | - Babli Jha
- Department of Applied Chemistry; S.V. National Institute of Technology; Surat- 395007 India
| | - Suban K. Sahoo
- Department of Applied Chemistry; S.V. National Institute of Technology; Surat- 395007 India
| | - Rajender Kumar
- Department of Applied Chemistry; S.V. National Institute of Technology; Surat- 395007 India
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Surface Engineered Magnetic Biosorbents for Water Treatment. ENVIRONMENTAL CHEMISTRY FOR A SUSTAINABLE WORLD 2018. [DOI: 10.1007/978-3-319-92111-2_9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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10
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Schrittwieser S, Reichinger D, Schotter J. Applications, Surface Modification and Functionalization of Nickel Nanorods. MATERIALS (BASEL, SWITZERLAND) 2017; 11:E45. [PMID: 29283415 PMCID: PMC5793543 DOI: 10.3390/ma11010045] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 12/20/2017] [Accepted: 12/22/2017] [Indexed: 02/07/2023]
Abstract
The growing number of nanoparticle applications in science and industry is leading to increasingly complex nanostructures that fulfill certain tasks in a specific environment. Nickel nanorods already possess promising properties due to their magnetic behavior and their elongated shape. The relevance of this kind of nanorod in a complex measurement setting can be further improved by suitable surface modification and functionalization procedures, so that customized nanostructures for a specific application become available. In this review, we focus on nickel nanorods that are synthesized by electrodeposition into porous templates, as this is the most common type of nickel nanorod fabrication method. Moreover, it is a facile synthesis approach that can be easily established in a laboratory environment. Firstly, we will discuss possible applications of nickel nanorods ranging from data storage to catalysis, biosensing and cancer treatment. Secondly, we will focus on nickel nanorod surface modification strategies, which represent a crucial step for the successful application of nanorods in all medical and biological settings. Here, the immobilization of antibodies or peptides onto the nanorod surface adds another functionality in order to yield highly promising nanostructures.
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Affiliation(s)
- Stefan Schrittwieser
- Molecular Diagnostics, AIT Austrian Institute of Technology, 1220 Vienna, Austria.
| | - Daniela Reichinger
- Molecular Diagnostics, AIT Austrian Institute of Technology, 1220 Vienna, Austria.
| | - Joerg Schotter
- Molecular Diagnostics, AIT Austrian Institute of Technology, 1220 Vienna, Austria.
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Soares SF, Rodrigues MI, Trindade T, Daniel-da-Silva AL. Chitosan-silica hybrid nanosorbents for oil removal from water. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.04.076] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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12
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Fernandes T, Soares SF, Trindade T, Daniel-da-Silva AL. Magnetic Hybrid Nanosorbents for the Uptake of Paraquat from Water. NANOMATERIALS (BASEL, SWITZERLAND) 2017; 7:E68. [PMID: 28336902 PMCID: PMC5388170 DOI: 10.3390/nano7030068] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Revised: 03/12/2017] [Accepted: 03/13/2017] [Indexed: 01/11/2023]
Abstract
Although paraquat has been banned in European countries, this herbicide is still used all over the world, thanks to its low-cost, high-efficiency, and fast action. Because paraquat is highly toxic to humans and animals, there is interest in mitigating the consequences of its use, namely by implementing removal procedures capable of curbing its environmental and health risks. This research describes new magnetic nanosorbents composed of magnetite cores functionalized with bio-hybrid siliceous shells, that can be used to uptake paraquat from water using magnetically-assisted procedures. The biopolymers κ-carrageenan and starch were introduced into the siliceous shells, resulting in two hybrid materials, Fe₃O₄@SiO₂/SiCRG and Fe₃O₄@SiO₂/SiStarch, respectively, that exhibit a distinct surface chemistry. The Fe₃O₄@SiO₂/SiCRG biosorbents displayed a superior paraquat removal performance, with a good fitting to the Langmuir and Toth isotherm models. The maximum adsorption capacity of paraquat for Fe₃O₄@SiO₂/SiCRG biosorbents was 257 mg·g-1, which places this sorbent among the best systems for the removal of this herbicide from water. The interesting performance of the κ-carrageenan hybrid, along with its magnetic properties and good regeneration capacity, presents a very efficient way for the remediation of water contaminated with paraquat.
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Affiliation(s)
- Tiago Fernandes
- CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Sofia F Soares
- CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Tito Trindade
- CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Ana L Daniel-da-Silva
- CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal.
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Jin X, Cai W, Cai Z. Amino organosilane grafted ordered mesoporous alumina with enhanced adsorption performance towards Cr(vi). RSC Adv 2017. [DOI: 10.1039/c7ra10933d] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Amino organosilane N-(β-aminoethyl)-γ-aminopropylmethylbimethoxysilane (2N) functionalized ordered mesoporous aluminas (MA–2N) with enhanced adsorption performance towards Cr(vi) were successfully prepare by a facile grafting method.
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Affiliation(s)
- Xin Jin
- School of Chemistry
- Chemical Engineering and Life Sciences
- State Key Laboratory of Silicate Materials for Architectures
- Wuhan University of Technology
- Wuhan 430070
| | - Weiquan Cai
- School of Chemistry
- Chemical Engineering and Life Sciences
- State Key Laboratory of Silicate Materials for Architectures
- Wuhan University of Technology
- Wuhan 430070
| | - Zhijun Cai
- International School of Materials Science and Engineering
- Wuhan University of Technology
- Wuhan 430070
- P. R. China
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Arefpour M, Kashi MA, Ramazani A, Montazer AH. Electrochemical pore filling strategy for controlled growth of magnetic and metallic nanowire arrays with large area uniformity. NANOTECHNOLOGY 2016; 27:275605. [PMID: 27248861 DOI: 10.1088/0957-4484/27/27/275605] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
While a variety of template-based strategies have been developed in the fabrication of nanowires (NWs), a uniform pore filling across the template still poses a major challenge. Here, we present a large area controlled pore filling strategy in the reproducible fabrication of various magnetic and metallic NW arrays, embedded inside anodic aluminum oxide templates. Using a diffusive pulsed electrodeposition (DPED) technique, this versatile strategy relies on the optimized filling of branched nanopores at the bottom of templates with Cu. Serving the Cu filled nanopores as appropriate nucleation sites, the DPED is followed by a uniform and homogeneous deposition of magnetic (Ni and Fe) and metallic (Cu and Zn) NWs at a current density of 50 mA cm-2 for an optimal thickness of alumina barrier layer (∼18 nm). Our strategy provides large area uniformity (exceeding 400 μm2) in the fabrication of 16 μm long free-standing NW arrays. Using hysteresis loop measurements and scanning electron microscopy images, the electrodeposition efficiency (EE) and pore filling percentage (F p) are evaluated, leading to maximum EE and F p values of 91% and 95% for Ni and Zn, respectively. Moreover, the resulting NW arrays are found to be highly crystalline. Accordingly, the DPED technique is capable of cheaply and efficiently controlling NW growth over a large area, providing a tool for various nanoscale applications including biomedical devices, electronics, photonics, magnetic storage medium and nanomagnet computing.
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Affiliation(s)
- M Arefpour
- Institute of Nanoscience and Nanotechnology, University of Kashan, Kashan 87317-51167, Iran
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Wang Z, Xu J, Hu Y, Zhao H, Zhou J, Liu Y, Lou Z, Xu X. Functional nanomaterials: Study on aqueous Hg(II) adsorption by magnetic Fe3O4@SiO2-SH nanoparticles. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2015.10.041] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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16
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Li Z, Xiao D, Ge Y, Koehler S. Surface-Functionalized Porous Lignin for Fast and Efficient Lead Removal from Aqueous Solution. ACS APPLIED MATERIALS & INTERFACES 2015; 7:15000-9. [PMID: 26098016 DOI: 10.1021/acsami.5b03994] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The development of ecofriendly sorbents for fast and efficient removal of heavy metals from aqueous media still remains a significant challenge. Here, we report that this task can be addressed by creating a porous naturally occurring polymer, as illustrated by functionalizing lignin with large numbers of mesopores and functional groups. We show that surface-functionalized porous lignin (SFPL), obtained by a two-step process, has a large surface area of 22.3 m2/g, 12 times that of lignin, and a high density of dithiocarbamate groups (2.8 mmol/g). SFPL was found to exhibit an excellent adsorption performance toward lead ions dissolved in water. For example, 99% of the lead ions from 50 mL of a solution containing 20 mg/L lead ions was removed in just 30 min by 0.01 g of SFPL. The saturated adsorption capacity of SFPL for lead ions was found to be 188 mg/g, which is 13 times that of the original lignin and 7 times that of activated carbon. The adsorption process is endothermic and involves intraparticle diffusion and chemical adsorption between lead ions and the functional groups of SFPL. The cost effectiveness and environmental friendliness of SFPL make it a promising material for removing lead and other heavy metals from wastewater.
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Affiliation(s)
- Zhili Li
- †School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China
- ‡School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Duo Xiao
- †School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China
| | - Yuanyuan Ge
- †School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China
| | - Stephan Koehler
- ‡School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
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