1
|
Abdulhamid ZM, Dabbawala AA, Delclos T, Straubinger R, Rueping M, Polychronopoulou K, Anjum DH. Synthesis, characterization, and preliminary insights of ZnFe 2O 4 nanoparticles into potential applications, with a focus on gas sensing. Sci Rep 2023; 13:19705. [PMID: 37952034 PMCID: PMC10640627 DOI: 10.1038/s41598-023-46960-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 11/07/2023] [Indexed: 11/14/2023] Open
Abstract
This work presents a hydrothermal-based facile method for synthesizing ZnFe2O4, whose size can be controlled with the concentration of sodium acetate used as a fuel and its physical changes at nanoscales when exposed to two different gases. The structural, morphological, compositional, and electronic properties of the synthesized samples are also presented in this paper. The crystal structure of the synthesized samples was determined using an X-ray Diffractometer (XRD). The results revealed fluctuations in the size, lattice parameter, and strain in the nanoparticles with increasing the concentration of sodium acetate. Field-Emission Scanning Electron Microscopy (FESEM) was used to determine synthesized materials' morphology and particle size. It revealed that the particles possessed approximately spherical morphology whose size decreased significantly with the increasing amount of sodium acetate. Transmission Electron Microscopy (TEM) was utilized to determine the structure, morphology, and elemental distributions in particles at the nanoscale, and it confirmed the findings of XRD and FESEM analyses. The high-resolution TEM (HRTEM) imaging analysis of the nanoparticles in our studied samples revealed that the particles predominantly possessed (001) type facets. X-ray photoelectron spectroscopy (XPS) and core-loss electron energy loss spectroscopy (EELS) showed an increasing fraction of Fe2+ with the decreasing size of the particles in samples. The Brunauer, Emmett, and Tellers (BET) analysis of samples revealed a higher surface area as the particle size decreases. In addition, the determined surface area and pore size values are compared with the literature, and it was found that the synthesized materials are promising for gas-sensing applications. The ab initio calculations of the Density of States (DOS) and Band structure of (001) surface terminating ZnFe2O4 were carried out using Quantum Espresso software to determine the bandgap of the synthesized samples. They were compared to their corresponding experimentally determined bandgap values and showed close agreement. Finally, in-situ TEM measurement was carried out on one of the four studied samples with robust properties using Ar and CO2 as reference and target gases, respectively. It is concluded from the presented study that the size reduction of the ZnFe2O4 nanoparticles (NPs) tunes the bandgap and provides more active sites due to a higher concentration of oxygen vacancies. The in-situ TEM showed us a nanoscale observation of the change in one of the crystal structure parameters. The d spacing of ZnFe2O4 NPs showed a noticeable fluctuation, reaching more than 5% upon exposure to CO2 and Ar gases.
Collapse
Affiliation(s)
- Zeyad M Abdulhamid
- Department of Physics, Center for Catalysis and Separations (CeCaS Center), Khalifa University of Science and Technology, Abu Dhabi, 127788, United Arab Emirates
| | - Aasif A Dabbawala
- Department of Mechanical Engineering, Center for Catalysis and Separations (CeCaS Center), Khalifa University of Science and Technology, Abu Dhabi, 127788, United Arab Emirates
| | - Thomas Delclos
- Manager, Materials, and Surface Core Labs, Khalifa University of Science and Technology, Abu Dhabi, 127788, United Arab Emirates
| | - Rainer Straubinger
- Core Technology Platforms, New York University Abu Dhabi, Abu Dhabi, 129188, United Arab Emirates
| | - Magnus Rueping
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology, 23955-6900, Thuwa, Saudi Arabia
| | - Kyriaki Polychronopoulou
- Department of Mechanical Engineering, Center for Catalysis and Separations (CeCaS Center), Khalifa University of Science and Technology, Abu Dhabi, 127788, United Arab Emirates
| | - Dalaver H Anjum
- Department of Physics, Center for Catalysis and Separations (CeCaS Center), Khalifa University of Science and Technology, Abu Dhabi, 127788, United Arab Emirates.
| |
Collapse
|
2
|
Development of a High-Accuracy Statistical Model to Identify the Key Parameter for Methane Adsorption in Metal-Organic Frameworks. ANALYTICA 2022. [DOI: 10.3390/analytica3030024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The geometrical and topological features of metal-organic frameworks (MOFs) play an important role in determining their ability to capture and store methane (CH4). Methane is a greenhouse gas that has been shown to be more dangerous in terms of contributing to global warming than carbon dioxide (CO2), especially in the first 20 years of its release into the atmosphere. Its accelerated emission increases the rate of global temperature increase and needs to be addressed immediately. Adsorption processes have been shown to be effective and efficient in mitigating methane emissions from the atmosphere by providing an enormous surface area for methane storage. Among all the adsorbents, MOFs were shown to be the best adsorbents for methane adsorption due to their higher favorable steric interactions, the presence of binding sites such as open metal sites, and hydrophobic pockets. These features may not necessarily be present in carbonaceous materials and zeolites. Although many studies have suggested that the main reason for the increased storage efficiencies in terms of methane in the MOFs is the high surface area, there was some evidence in certain research works that methane storage performance, as measured by uptakes and deliveries in gravimetric and volumetric units, was higher for certain MOFs with a lower surface area. This prompted us to find out the most significant property of the MOF, whether it be material-based or pore-based, that has the maximum influence on methane uptake and delivery, using a comprehensive statistical approach that has not previously been employed in the methane storage literature. The approach in our study employed various chemometric techniques, including simple and multiple linear regression (SLR and MLR), combined with different types of multicollinearity diagnostics, partial correlations, standardized coefficients, and changes in regression coefficient estimates and their standard errors, applied to both the SLR and MLR models. The main advantages of this statistical approach are that it is quicker, provides a deeper insight into experimental data, and highlights a single, most important, parameter for MOF design and tuning that can predict and maximize the output storage and capture performance. The significance of our approach is that it was modeled purely based on experimental data, which will capture the real system, as opposed to the molecular simulations employed previously in the literature. Our model included data from ~80 MOFs and eight properties related to the material, pore, and thermodynamics (isosteric adsorption energy). Successful attempts to model the methane sorption process have previously been conducted using thermodynamic approaches and by developing adsorption performance indicators, but these are either too complex or time-consuming and their data covers fewer than 10 MOFs and a maximum of three MOF properties. By comparing the statistical metrics between the models, the most important and statistically significant property of the MOF was determined, which will be crucial when designing MOFs for use in storing and delivering methane.
Collapse
|
3
|
Zahra R, Pervaiz E, Baig MM, Rabi O. Three-dimensional hierarchical flowers-like cobalt-nickel sulfide constructed on graphitic carbon nitride: Bifunctional non-noble electrocatalyst for overall water splitting. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140346] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
|
4
|
Tkachenko V, Kunemann P, Malval JP, Petithory T, Pieuchot L, Vidal L, Chemtob A. Kinetically stable sub-50 nm fluorescent block copolymer nanoparticles via photomediated RAFT dispersion polymerization for cellular imaging. NANOSCALE 2022; 14:534-545. [PMID: 34935832 DOI: 10.1039/d1nr04934h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Self-assembled block copolymer nanoparticles (NPs) have emerged as major potential nanoscale vehicles for fluorescence bioimaging. The preparation of NPs with high yields possessing high kinetic stability to prevent the leakage of fluorophore molecules is crucial to their practical implementation. Here, we report a photomediated RAFT polymerization-induced self-assembly (PISA) yielding uniform and nanosized poly((oligo(ethylene glycol) acrylate)-block-poly(benzyl acrylate) particles (POEGA-b-PBzA) with a concentration of 22 wt%, over 20 times more than with micellization and nanoprecipitation. The spherical diblock copolymer nanoparticles have an average size of 10-50 nm controllable through the degree of polymerization of the stabilizing POEGA block. Subsequent dialysis against water and swelling with Nile red solution led to highly stable fluorescent NPs able to withstand the changes in concentration, ionic strength, pH or temperature. A PBzA/water interfacial tension of 48.6 mN m-1 hinders the exchange between copolymer chains, resulting in the trapping of NPs in a "kinetically frozen" state responsible for high stability. A spectroscopic study combining fluorescence and UV-vis absorption agrees with a preferential distribution of fluorophores in the outer POEGEA shell despite its hydrophobic nature. Nile red-doped POEGA-b-PBzA micelles without initiator residues and unimers but with high structural stability turn out to be noncytotoxic, and can be used for the optical imaging of cells. Real-time confocal fluorescence microscopy shows a fast cellular uptake using C2C12 cell lines in minutes, and a preferential localization in the perinuclear region, in particular in the vesicles.
Collapse
Affiliation(s)
- Vitalii Tkachenko
- Université de Haute-Alsace, CNRS, IS2M UMR7361, F-68100 Mulhouse, France.
- Université de Strasbourg, France
| | - Philippe Kunemann
- Université de Haute-Alsace, CNRS, IS2M UMR7361, F-68100 Mulhouse, France.
- Université de Strasbourg, France
| | - Jean Pierre Malval
- Université de Haute-Alsace, CNRS, IS2M UMR7361, F-68100 Mulhouse, France.
- Université de Strasbourg, France
| | - Tatiana Petithory
- Université de Haute-Alsace, CNRS, IS2M UMR7361, F-68100 Mulhouse, France.
- Université de Strasbourg, France
| | - Laurent Pieuchot
- Université de Haute-Alsace, CNRS, IS2M UMR7361, F-68100 Mulhouse, France.
- Université de Strasbourg, France
| | - Loïc Vidal
- Université de Haute-Alsace, CNRS, IS2M UMR7361, F-68100 Mulhouse, France.
- Université de Strasbourg, France
| | - Abraham Chemtob
- Université de Haute-Alsace, CNRS, IS2M UMR7361, F-68100 Mulhouse, France.
- Université de Strasbourg, France
| |
Collapse
|
5
|
Nicholls IA, Golker K, Olsson GD, Suriyanarayanan S, Wiklander JG. The Use of Computational Methods for the Development of Molecularly Imprinted Polymers. Polymers (Basel) 2021; 13:2841. [PMID: 34502881 PMCID: PMC8434026 DOI: 10.3390/polym13172841] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 08/16/2021] [Accepted: 08/19/2021] [Indexed: 12/29/2022] Open
Abstract
Recent years have witnessed a dramatic increase in the use of theoretical and computational approaches in the study and development of molecular imprinting systems. These tools are being used to either improve understanding of the mechanisms underlying the function of molecular imprinting systems or for the design of new systems. Here, we present an overview of the literature describing the application of theoretical and computational techniques to the different stages of the molecular imprinting process (pre-polymerization mixture, polymerization process and ligand-molecularly imprinted polymer rebinding), along with an analysis of trends within and the current status of this aspect of the molecular imprinting field.
Collapse
Affiliation(s)
- Ian A. Nicholls
- Bioorganic & Biophysical Chemistry Laboratory, Linnaeus University Centre for Biomaterials Chemistry, Department of Chemistry & Biomedical Sciences, Linnaeus University, SE-391 82 Kalmar, Sweden; (K.G.); (G.D.O.); (S.S.); (J.G.W.)
| | | | | | | | | |
Collapse
|
6
|
Protein-based nanoparticles synthesized at a high shear rate and optimized for drug delivery applications. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116133] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
7
|
Zharmagambetova A, Talgatov E, Auyezkhanova A, Tumabayev N, Bukharbayeva F. Behavior of Pd‐supported catalysts in phenylacetylene hydrogenation: Effect of combined use of
polyvinylpyrrolidone
and
NaOH
for magnetic support modification. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Alima Zharmagambetova
- Laboratory of Organic Catalysis, Department of Catalysis D.V. Sokolskiy Institute of Fuel, Catalysis and Electrochemistry Kunayev Almaty Kazakhstan
| | - Eldar Talgatov
- Laboratory of Organic Catalysis, Department of Catalysis D.V. Sokolskiy Institute of Fuel, Catalysis and Electrochemistry Kunayev Almaty Kazakhstan
| | - Assemgul Auyezkhanova
- Laboratory of Organic Catalysis, Department of Catalysis D.V. Sokolskiy Institute of Fuel, Catalysis and Electrochemistry Kunayev Almaty Kazakhstan
| | - Nurmukhamet Tumabayev
- Laboratory of Organic Catalysis, Department of Catalysis D.V. Sokolskiy Institute of Fuel, Catalysis and Electrochemistry Kunayev Almaty Kazakhstan
| | - Farida Bukharbayeva
- Chair of Chemistry, Institute of Natural Sciences and Geography Abai Kazakh National Pedagogical University Almaty Kazakhstan
| |
Collapse
|
8
|
Loghmani MH, Shojaie AF, Hosseini SA. Glutathione-responsive hydrogel and molecularly imprinted polymer nanospheres: New aspect on cisplatin delivery. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2020.12.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
9
|
Lotfalian S, Nematollahzadeh A, Ghasemi S. Hierarchically structured protein-based hollow-nanospheres for drug delivery. REACT FUNCT POLYM 2021. [DOI: 10.1016/j.reactfunctpolym.2021.104821] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
|
10
|
Thankappan H, Semsarilar M, Li S, Chang Y, Bouyer D, Quemener D. Synthesis of Block Copolymer Brush by RAFT and Click Chemistry and Its Self-Assembly as a Thin Film. MOLECULES (BASEL, SWITZERLAND) 2020; 25:molecules25204774. [PMID: 33080832 PMCID: PMC7587578 DOI: 10.3390/molecules25204774] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 10/14/2020] [Accepted: 10/16/2020] [Indexed: 11/16/2022]
Abstract
A well-defined block copolymer brush poly(glycidyl methacrylate)-graft-(poly(methyl methacrylate)-block- poly(oligo(ethylene glycol) methyl ether methacrylate)) (PGMA-g-(PMMA-b-POEGMA)) is synthesized via grafting from an approach based on a combination of click chemistry and reversible addition-fragmentation chain transfer (RAFT) polymerization. The resulting block copolymer brushes were characterized by 1H-NMR and size exclusion chromatography (SEC). The self-assembly of the block copolymer brush was then investigated under selective solvent conditions in three systems: THF/water, THF/CH3OH, and DMSO/CHCl3. PGMA-g-(PMMA-b-POEGMA) was found to self-assemble into spherical micelle structures as analyzed by transmission electron microscopy (TEM) and dynamic light scattering (DLS). The average size of the particles was much smaller in THF/CH3OH and DMSO/CHCl3 as compared with the THF/water system. Thin film of block copolymer brushes with tunable surface properties was then prepared by the spin-coating technique. The thickness of the thin film was confirmed by scanning electron microscopy (SEM). Atom force microscopy (AFM) analysis revealed a spherical morphology when the block copolymer brush was treated with poor solvents for the backbone and hydrophobic side chains. The contact angle measurements were used to confirm the surface rearrangements of the block copolymer brushes.
Collapse
Affiliation(s)
- Hajeeth Thankappan
- Institut Européen des Membranes, IEM-UMR 5635, Univ Montpellier, ENSCM, CNRS, 34095 Montpellier, France; (H.T.); (M.S.); (S.L.); (D.B.)
| | - Mona Semsarilar
- Institut Européen des Membranes, IEM-UMR 5635, Univ Montpellier, ENSCM, CNRS, 34095 Montpellier, France; (H.T.); (M.S.); (S.L.); (D.B.)
| | - Suming Li
- Institut Européen des Membranes, IEM-UMR 5635, Univ Montpellier, ENSCM, CNRS, 34095 Montpellier, France; (H.T.); (M.S.); (S.L.); (D.B.)
| | - Yung Chang
- Department of Chemical Engineering, R&D Center for Membrane Technology, Chung Yuan Christian University, 200, Chung-Bei Rd., Chungli, Taoyuan, 320, Taiwan;
| | - Denis Bouyer
- Institut Européen des Membranes, IEM-UMR 5635, Univ Montpellier, ENSCM, CNRS, 34095 Montpellier, France; (H.T.); (M.S.); (S.L.); (D.B.)
| | - Damien Quemener
- Institut Européen des Membranes, IEM-UMR 5635, Univ Montpellier, ENSCM, CNRS, 34095 Montpellier, France; (H.T.); (M.S.); (S.L.); (D.B.)
- Correspondence:
| |
Collapse
|
11
|
Torres MJ, Sánchez P, de Lucas-Consuegra A, de la Osa AR. Electrocatalytic hydrogenation of cinnamaldehyde in a PEM cell: The role of sodium hydroxide and platinum loading. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2020.110936] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
12
|
Shevchenko N, Pankova G, Iakobson O, Abiev R, Svetlov S, Ilin N. Microfluidic synthesis of monodisperse porous polystyrene microspheres for sorption of bovine serum albumin. J Microencapsul 2020; 37:457-465. [PMID: 32552377 DOI: 10.1080/02652048.2020.1785027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Droplet microfluidics offers exquisite control over the flows of multiple fluids in micro-scale, enabling fabrication of advanced microspheres with precisely tuneable structures. The main goal of this work was to design monodispersed carboxylated polystyrene microspheres with a developed pore structure (a specific surface area more than 200 m2/g) using microfluidic technology. We investigated the influence of the composition of monomer phase for the stable formation of droplets. Under the stable region, the resulting microspheres (with diameter 50 µm) showed narrow size distribution having a coefficient of variation of below 2%. The obtained microspheres are characterised by morphology and surface structure by means of electron microscopy. The structure of cross-linked microspheres is investigated by solid-state 1H NMR spectroscopy. Finally, these microspheres have great potential for the effective sorption of biologically active substances (bovine serum albumin).
Collapse
Affiliation(s)
- Natalia Shevchenko
- Institute of Macromolecular Compounds of Russian Academy of Science, Saint Petersburg, Russia
| | - Galina Pankova
- Institute of Macromolecular Compounds of Russian Academy of Science, Saint Petersburg, Russia
| | - Olga Iakobson
- Institute of Macromolecular Compounds of Russian Academy of Science, Saint Petersburg, Russia
| | - Rufat Abiev
- Saint Petersburg State Technological Institute (Technical University), Saint Petersburg, Russia.,Institute of Silicate Chemistry of Russian Academy of Science, Saint Petersburg, Russia
| | - Stanislav Svetlov
- Saint Petersburg State Technological Institute (Technical University), Saint Petersburg, Russia
| | - Nikita Ilin
- Saint Petersburg State Technological Institute (Technical University), Saint Petersburg, Russia
| |
Collapse
|
13
|
David MK, Okoro UC, Akpomie KG, Okey C, Oluwasola HO. Thermal and hydrothermal alkaline modification of kaolin for the adsorptive removal of lead(II) ions from aqueous solution. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2621-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
|
14
|
Osojnik Črnivec IG, Istenič K, Skrt M, Poklar Ulrih N. Thermal protection and pH-gated release of folic acid in microparticles and nanoparticles for food fortification. Food Funct 2020; 11:1467-1477. [DOI: 10.1039/c9fo02419k] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dispersed folic acid was successfully encapsulated in alginate–pectin hydrogels, proliposomes, and combinations thereof, providing an efficient pH-responsive delivery system.
Collapse
Affiliation(s)
- Ilja Gasan Osojnik Črnivec
- Chair of Biochemistry and Food Chemistry
- Department of Food Science and Technology
- Biotechnical Faculty
- University of Ljubljana
- SI-1000 Ljubljana
| | - Katja Istenič
- Chair of Biochemistry and Food Chemistry
- Department of Food Science and Technology
- Biotechnical Faculty
- University of Ljubljana
- SI-1000 Ljubljana
| | - Mihalea Skrt
- Chair of Biochemistry and Food Chemistry
- Department of Food Science and Technology
- Biotechnical Faculty
- University of Ljubljana
- SI-1000 Ljubljana
| | - Nataša Poklar Ulrih
- Chair of Biochemistry and Food Chemistry
- Department of Food Science and Technology
- Biotechnical Faculty
- University of Ljubljana
- SI-1000 Ljubljana
| |
Collapse
|
15
|
Plant-mediated Cu/Cr/Ni nanoparticle formation strategy for simultaneously separation of the mixed ions from aqueous solution. J Taiwan Inst Chem Eng 2019. [DOI: 10.1016/j.jtice.2018.10.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
16
|
Qurrat-Ul-Ain, Khatoon J, Shah MR, Malik MI, Khan IAT, Khurshid S, Naz R. Convenient pH-responsive removal of Acid Black 1 by green l-histidine/iron oxide magnetic nanoadsorbent from water: performance and mechanistic studies. RSC Adv 2019; 9:2978-2996. [PMID: 35518966 PMCID: PMC9059959 DOI: 10.1039/c8ra09279f] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Accepted: 01/06/2019] [Indexed: 12/07/2022] Open
Abstract
This study was aimed at developing green histidine-modified Fe3O4 nanoparticles (His-MNPs) for the adsorptive removal of Acid Black 1 (AB1) from aqueous solution. The His-MNPs were characterized by atomic force microscopy, scanning electron microscopy-energy dispersive X-ray spectrometry, infra-red spectra and thermogravimetry. These MNPs were spherical (average diameter 11-28 nm) with polydispersity index of 1.40 and about 13% mass coating of histidine. To optimize AB1 adsorption on His-MNPs and understand its mechanism, the influences of different operational variables (pH, adsorbent amount, temperature, initial AB1 concentration, contact time, ionic strength, etc.) on adsorption were examined with adsorption isotherms, kinetics and thermodynamic studies. The AB1 adsorption from water was fast with equilibrium time ≤ 45 min. The adsorption equilibrium was best fitted to the Langmuir isotherm model (q max = 166.7 mg g-1 at the adsorbent dose of 0.2 g L-1, temperature 30 °C and pH 4). The linearity order for other isotherms was as follows: Dubinin-Radushkevich (D-R) < Temkin < Freundlich. The kinetics of the AB1 adsorption demonstrated the best compliance with the pseudo-second-order model, predominantly controlled by film diffusion as compared to intraparticle diffusion. Thermodynamic parameters (ΔH° and ΔG°) reflected the exothermic and spontaneous adsorption process. The values of ΔG°, ΔH°, activation energy and D-R free adsorption energy were all consistent with the physisorptive removal of AB1. The spectral (electronic and IR) and pH studies further corroborated the mechanism of AB1 removal by His-MNPs. The His-MNPs showed efficient adsorption, easy regeneration and excellent reusability, assisted by their pH-responsive properties. The prepared adsorbent can provide a safe, effective and economical alternative strategy for removing azo dyes from wastewater.
Collapse
Affiliation(s)
- Qurrat-Ul-Ain
- Department of Chemistry, Faculty of Science, University of Karachi Karachi-75270 Pakistan +92 21 99261330 +92 21 99261300
| | - Jaweria Khatoon
- Department of Chemistry, Federal Urdu University of Arts, Science and Technology, Gulshan-e-Iqbal Campus Karachi-75300 Pakistan
| | - Muhammad Raza Shah
- H. E. J. Research Institute of Chemistry, ICCBS, University of Karachi Karachi 75270 Pakistan
| | - Muhammad Imran Malik
- H. E. J. Research Institute of Chemistry, ICCBS, University of Karachi Karachi 75270 Pakistan
| | - Iffat Abdul Tawab Khan
- Department of Chemistry, Federal Urdu University of Arts, Science and Technology, Gulshan-e-Iqbal Campus Karachi-75300 Pakistan
| | - Sumaira Khurshid
- Department of Chemistry, Federal Urdu University of Arts, Science and Technology, Gulshan-e-Iqbal Campus Karachi-75300 Pakistan
| | - Raheela Naz
- Department of Chemistry, Faculty of Science, University of Karachi Karachi-75270 Pakistan +92 21 99261330 +92 21 99261300
| |
Collapse
|
17
|
van Assenbergh P, Fokker M, Langowski J, van Esch J, Kamperman M, Dodou D. Pull-off and friction forces of micropatterned elastomers on soft substrates: the effects of pattern length scale and stiffness. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2019; 10:79-94. [PMID: 30680281 PMCID: PMC6334791 DOI: 10.3762/bjnano.10.8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Accepted: 12/11/2018] [Indexed: 06/09/2023]
Abstract
The adhesiveness of biological micropatterned adhesives primarily relies on their geometry (e.g., feature size, architecture) and material properties (e.g., stiffness). Over the last few decades, researchers have been mimicking the geometry and material properties of biological micropatterned adhesives. The performance of these biomimetic micropatterned adhesives is usually tested on hard substrates. Much less is known about the effect of geometry, feature size, and material properties on the performance of micropatterned adhesives when the substrate is deformable. Here, micropatterned adhesives of two stiffness degrees (Young's moduli of 280 and 580 kPa) were fabricated from poly(dimethylsiloxane) (PDMS) and tested on soft poly(vinyl alcohol) (PVA) substrates of two stiffness degrees (12 and 18 kPa), and on hard glass substrates as a reference. An out-of-the-cleanroom colloidal lithographic approach was successfully expanded to fabricate adhesives with two geometries, namely dimples with and without a terminal layer. Dimples without a terminal layer were fabricated on two length scales, namely with sub-microscale and microscale dimple diameters. The cross section of samples with a terminal layer showed voids with a spherical shape, separated by hourglass-shaped walls. These voids penetrate the terminal layer, resulting in an array of holes at the surface. We found that on soft substrates, generally, the size of the dimples did not affect pull-off forces. The positive effects of sub-microscale features on pull-off and friction forces, such as defect control and crack trapping, as reported in the literature for hard substrates, seem to disappear on soft substrates. The dimple geometry with a terminal layer generated significantly higher pull-off forces compared to other geometries, presumably due to interlocking of the soft substrate into the holes of the terminal layer. Pull-off from soft substrates increased with the substrate stiffness for all tested geometries. Friction forces on soft substrates were the highest for microscale dimples without a terminal layer, likely due to interlocking of the soft substrate between the dimples.
Collapse
Affiliation(s)
- Peter van Assenbergh
- Biomechanical Engineering Department, Delft University of Technology, Mekelweg 2, 2628 CD Delft, The Netherlands
| | - Marike Fokker
- Biomechanical Engineering Department, Delft University of Technology, Mekelweg 2, 2628 CD Delft, The Netherlands
| | - Julian Langowski
- Experimental Zoology Group, Wageningen University & Research, De Elst 1, 6708 WD Wageningen, The Netherlands
| | - Jan van Esch
- Chemical Engineering Department, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
| | - Marleen Kamperman
- Polymer Science, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Dimitra Dodou
- Biomechanical Engineering Department, Delft University of Technology, Mekelweg 2, 2628 CD Delft, The Netherlands
| |
Collapse
|
18
|
Tkachenko V, Matei Ghimbeu C, Vaulot C, Vidal L, Poly J, Chemtob A. RAFT-photomediated PISA in dispersion: mechanism, optical properties and application in templated synthesis. Polym Chem 2019. [DOI: 10.1039/c9py00209j] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Diblock copolymer nanoparticles were prepared by photomediated polymerization-induced self-assembly (“photo-PISA”) in dispersion.
Collapse
Affiliation(s)
| | | | - Cyril Vaulot
- Université de Haute-Alsace
- CNRS
- IS2M UMR7361
- F-68100 Mulhouse
- France
| | - Loïc Vidal
- Université de Haute-Alsace
- CNRS
- IS2M UMR7361
- F-68100 Mulhouse
- France
| | - Julien Poly
- Université de Haute-Alsace
- CNRS
- IS2M UMR7361
- F-68100 Mulhouse
- France
| | - Abraham Chemtob
- Université de Haute-Alsace
- CNRS
- IS2M UMR7361
- F-68100 Mulhouse
- France
| |
Collapse
|
19
|
Multi-functional nanocarriers based on iron oxide nanoparticles conjugated with doxorubicin, poly(ethylene glycol) and folic acid as theranostics for cancer therapy. Colloids Surf B Biointerfaces 2018; 170:529-537. [DOI: 10.1016/j.colsurfb.2018.06.051] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 06/14/2018] [Accepted: 06/22/2018] [Indexed: 11/22/2022]
|
20
|
Liu W, Zhu X, Yang X, Li K, Yang Z. Preparation of highly cross-linked hydrophilic porous microspheres poly(N
,N
′-methylenebisacrylamide) and poly(N
,N
′-methylenebisacrylamide-co
-acrylic acid) with an application on the removal of cadmium. POLYM ADVAN TECHNOL 2018. [DOI: 10.1002/pat.4371] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Wei Liu
- Tianjin Polytechnic University; State Key Laboratory of Separation Membranes and Membrane Processes/National Center for International Joint Research on Separation Membranes; Tianjin 300387 China
- Tianjin Polytechnic University; School of Environmental and Chemical Engineering; Tianjin 300387 China
- Tianjin Colouroad Coatings & Chemicals Co. Ltd.; Tianjin 300457 China
| | - Xiaolian Zhu
- Tianjin Polytechnic University; School of Environmental and Chemical Engineering; Tianjin 300387 China
| | - Xinlin Yang
- Nankai University; Key Laboratory of Functional Polymer Materials, Ministry of Education, Institute of Polymer Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300071 China
| | - Ke Li
- Tianjin Polytechnic University; School of Environmental and Chemical Engineering; Tianjin 300387 China
| | - Zupeng Yang
- Tianjin Polytechnic University; School of Environmental and Chemical Engineering; Tianjin 300387 China
| |
Collapse
|
21
|
Laurenti M, Cauda V. Gentamicin-Releasing Mesoporous ZnO Structures. MATERIALS (BASEL, SWITZERLAND) 2018; 11:E314. [PMID: 29470405 PMCID: PMC5849011 DOI: 10.3390/ma11020314] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 02/11/2018] [Accepted: 02/17/2018] [Indexed: 11/16/2022]
Abstract
Among metal oxides, zinc oxide (ZnO) is one of the most attractive materials thanks to its biocompatible and biodegradable properties along with the existence of various morphologies featuring piezoelectric, semiconducting and photocatalytic activities. All of these structures were successfully prepared and tested for numerous applications, including optoelectronics, sensors and biomedical ones. In the last case, biocompatible ZnO nanomaterials positively influenced cells growth and tissue regeneration as well, promoting wound healing and new bone formation. Despite showing high surface areas, ZnO morphologies generally lack an intrinsic mesoporous structure, strongly limiting the investigation of the corresponding drug loading and release properties. Within this scope, this study focuses on the adsorption and release properties of high surface area, mesoporous ZnO structures using gentamicin sulfate (GS), a well known antibiotic against bacterial infections especially in orthopedics. The particular ZnO morphology was achieved starting from sputtered porous zinc layers, finally converted into ZnO by thermal oxidation. By taking advantage of this mesoporous framework, GS was successfully adsorbed within the ZnO matrix and the kinetic release profile evaluated for up to seven days. The adsorption of GS was successfully demonstrated, with a maximum amount of 263 mg effectively loaded per gram of active material. Then, fast kinetic release was obtained in vitro by simple diffusion mechanism, thus opening further possibilities of smart pore and surface engineering to improve the controlled delivery.
Collapse
Affiliation(s)
- Marco Laurenti
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Turin, Italy.
| | - Valentina Cauda
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Turin, Italy.
| |
Collapse
|
22
|
Iron-oxide nano-particles effect on the blood hemodynamics in atherosclerotic coronary arteries. Chem Eng Sci 2018. [DOI: 10.1016/j.ces.2017.11.048] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
23
|
Ataei-Germi T, Nematollahzadeh A. Bimodal porous silica microspheres decorated with polydopamine nano-particles for the adsorption of methylene blue in fixed-bed columns. J Colloid Interface Sci 2016; 470:172-182. [DOI: 10.1016/j.jcis.2016.02.057] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Revised: 02/25/2016] [Accepted: 02/26/2016] [Indexed: 10/22/2022]
|
24
|
Chai Z, BelBruno JJ. Thermochemical study of amino acid imprinted polymer films. J Mol Recognit 2015; 28:651-5. [PMID: 25990092 DOI: 10.1002/jmr.2479] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Revised: 04/13/2015] [Accepted: 04/17/2015] [Indexed: 12/25/2022]
Abstract
Molecularly imprinted polymers provide an alternative to traditional methods of amino acid analysis. The imprinted polymers are more robust and significantly less expensive than, for example, ELISA analysis. Amino acid imprinted nylon-6 thin films were studied by differential scanning calorimetry and scanning electron microscopy. Endothermic peaks were observed for imprinted films at temperatures higher than that for pure nylon, indicating the formation of a more-ordered, hydrogen bonded polymer. Removal of the amino acid from the imprinted film resulted in reversion to the peak observed for pure nylon-6. Additives, β-cyclodextrin and multiwalled carbon nanotubes, were added to the imprinted polymer solutions as a means to increase the porosity of the films. These studies resulted in alternative morphologies and calorimetric results that provide additional functionalities and applications for imprinted polymers.
Collapse
Affiliation(s)
- Ziyi Chai
- Department of Chemistry, Dartmouth College, Hanover, NH, 03755, USA
| | | |
Collapse
|
25
|
Chemically modified organic/inorganic nanoporous composite particles for the adsorption of reactive black 5 from aqueous solution. REACT FUNCT POLYM 2015. [DOI: 10.1016/j.reactfunctpolym.2014.11.001] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|