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Sola-Rabada A, Sahare P, Hickman GJ, Vasquez M, Canham LT, Perry CC, Agarwal V. Biogenic porous silica and silicon sourced from Mexican Giant Horsetail (Equisetum myriochaetum) and their application as supports for enzyme immobilization. Colloids Surf B Biointerfaces 2018; 166:195-202. [PMID: 29597152 DOI: 10.1016/j.colsurfb.2018.02.047] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 01/15/2018] [Accepted: 02/21/2018] [Indexed: 10/18/2022]
Abstract
Porous silica-based materials are attractive for biomedical applications due to their biocompatibility and biodegradable character. In addition, inorganic supports such as porous silicon are being developed due to integrated circuit chip compatibility and tunable properties leading to a wide range of multidisciplinary applications. In this contribution, biosilica extracted from a rarely studied plant material (Equisetum Myriochaetum), its conversion to silicon and the potential for both materials to be used as supports for enzyme immobilization are investigated. E. myriochaetum was subject to conventional acid digestion to extract biogenic silica with a% yield remarkably higher (up to 3 times) than for other Equisetum sp. (i.e. E. Arvense). The surface area of the isolated silica was ∼400 m2/g, suitable for biotechnological applications. Biogenic silicon was obtained by magnesiothermic reduction. The materials were characterized by SEM-EDX, XRD, FT-IR, ICP-OES, TGA and BET analysis and did not contain significant levels of class 1 heavy elements (such as Pb, Cd, Hg and As). Two commercial peroxidases, horseradish peroxidase (HRP) and Coprinus cinereus peroxidase (CiP) were immobilized onto the biogenic materials using three different functionalization routes: (A) carbodiimide, (B) amine + glutaraldehyde and (C) amine + carbodiimide. Although both biogenic silica and porous silicon could be used as supports differences in behaviour were observed for the two enzymes. For HRP, loading onto biogenic silica via the glutaraldehyde immobilization technique (route B) was most effective. The loading of CiP showed a much higher peroxidase activity onto porous silicon than silica functionalized by the carbodiimide method (route A). From the properties of the extracted materials obtained from Equisetum Myriochaetum and the immobilization results observed, these materials appear to be promising for industrial and biomedical applications.
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Affiliation(s)
- Anna Sola-Rabada
- Biomolecular and Materials Interface Research Group, Interdisciplinary Biomedical Research Centre, School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham, NG11 8NS, United Kingdom
| | - Padma Sahare
- Centro de Investigación en Ingeniería y Ciencias Aplicadas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Col. Chamilpa, Cuernavaca, Morelos, 62209, Mexico; Facultad de Ciencias Físico-Matemáticas, UMSNH, Morelia, Michoacán, México
| | - Graham J Hickman
- Biomolecular and Materials Interface Research Group, Interdisciplinary Biomedical Research Centre, School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham, NG11 8NS, United Kingdom
| | - Marco Vasquez
- Centro de Investigación en Ingeniería y Ciencias Aplicadas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Col. Chamilpa, Cuernavaca, Morelos, 62209, Mexico
| | - Leigh T Canham
- Nanoscale Physics Research Laboratories, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
| | - Carole C Perry
- Biomolecular and Materials Interface Research Group, Interdisciplinary Biomedical Research Centre, School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham, NG11 8NS, United Kingdom.
| | - Vivechana Agarwal
- Centro de Investigación en Ingeniería y Ciencias Aplicadas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Col. Chamilpa, Cuernavaca, Morelos, 62209, Mexico.
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Vasani RB, Szili EJ, Rajeev G, Voelcker NH. On-demand Antimicrobial Treatment with Antibiotic-Loaded Porous Silicon Capped with a pH-Responsive Dual Plasma Polymer Barrier. Chem Asian J 2017; 12:1605-1614. [PMID: 28508517 DOI: 10.1002/asia.201700427] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 05/05/2017] [Indexed: 02/05/2023]
Abstract
Chronic wounds are a major socio-economic problem. Bacterial infections in such wounds are a major contributor to lack of wound healing. An early indicator of wound infection is an increase in pH of the wound fluid. Herein, we describe the development of a pH-responsive drug delivery device that can potentially be used for wound decontamination in situ and on-demand in response to an increase in the pH of the wound environment. The device is based on a porous silicon film that provides a reservoir for encapsulation of an antibiotic within the pores. Loaded porous silicon is capped with dual plasma polymer layers of poly(1,7-octadiene) and poly(acrylic acid), which provide a pH-responsive barrier for on-demand release of the antibiotic. We demonstrate that release of the antibiotic is inhibited in aqueous buffer at pH 5, whereas the drug is released in a sustainable manner at pH 8. Importantly, the released drug was bacteriostatic against the Pseudomonas aeruginosa wound pathogen. In the future, incorporation of the delivery device into wound dressings could potentially be utilized for non-invasive decontamination of wounds.
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Affiliation(s)
- Roshan B Vasani
- Centre for Neurosciences, School of Medicine, Flinders University, South Australia, Australia
| | - Endre J Szili
- Future Industries Institute, University of South Australia, South Australia, Australia
| | - Gayathri Rajeev
- Future Industries Institute, University of South Australia, South Australia, Australia
| | - Nicolas H Voelcker
- Centre for Neurosciences, School of Medicine, Flinders University, South Australia, Australia.,Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Victoria, Australia.,Commonwealth Scientific and Industrial Research Organisation (CSIRO), Victoria, Australia.,Melbourne Centre for Nanofabrication, Victorian Node of the Australian National Fabrication Facility, Victoria, Australia.,Monash Institute of Medical Engineering, Monash University, Victoria, Australia
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In vitro mineralization of dual grafted polytetrafluoroethylene membranes. Biointerphases 2017; 12:02C413. [PMID: 28565915 DOI: 10.1116/1.4984012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The modification of biomaterials by radiation induced grafting is a promising method to improve their bioactivity. Successful introduction of carboxyl and amine functional groups on the surface of a polytetrafluoroethylene membrane was achieved by grafting of acrylic acid (AA) and 2-aminoethyl methacrylate hydrochloride (AEMA) using simultaneous gamma irradiation grafting. Chemical characterization by attenuated total reflectance Fourier transform infrared spectroscopy and x-ray photoelectron spectroscopy confirmed the presence of amine and carboxylate functionalities and indicated that all protonated amines formed ion pairs with carboxyl groups, but not all carboxyl are involved in ion pairing. It was found that the irradiation doses (2, 5, or 10 kGy) affected the grafting outcome only when sulfuric acid (0.5 or 0.9 M) was added as a polymerization enhancer. The use of the inorganic acid successfully enhanced the total graft yield (GY), but the changes in the graft extent (GE) were not conclusive. Dual functional films were produced by either a one- or a two-step process. Generally, higher GY and GE values were observed for the samples produced by the two-step grafting of AA and AEMA. The in vitro mineralization in 1.5× simulated body fluid (SBF) induced the formation of carbonated hydroxyapatite as verified by FITR. All samples showed an increase in weight after mineralization with significantly larger increases observed for the samples which had the 1.5× SBF changed every third day compared to every seventh. For the dual functional samples, it was found that the sample grafted by the one-step method shows a significantly higher increase in weight despite a much lower GY compared to the sample prepared by the two-step method and this was attributed to the different architecture of grafted chains.
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Conti D, Lamberti A, Porro S, Rivolo P, Chiolerio A, Pirri CF, Ricciardi C. Memristive behaviour in poly-acrylic acid coated TiO 2 nanotube arrays. NANOTECHNOLOGY 2016; 27:485208. [PMID: 27819794 DOI: 10.1088/0957-4484/27/48/485208] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
This work investigates titanium dioxide nanotube arrays (TiO2-NTA) grown by anodic oxidation as an active material for memristive applications. In particular, metal-insulator-metal structures made of vertically oriented amorphous TiO2-NTA grown on titanium foil were exploited in Ti/TiO2-NTA/Pt devices. The deposition of a polymeric thin film between NTA and top electrodes significantly improved the stability of the devices and increased by more than double the off/on resistance ratio. The resistive switching of TiO2-NTA samples crystallised by thermal annealing was also studied. Such devices displayed nonlinear I-V curves characterised by a smooth rectifying behaviour, without any evident resistive switching (RS). Also in this case, the interposition of the polymeric layer enhanced the RS behaviour of TiO2-NTA samples, remarkably increasing the devices' off/on ratio and endurance. The rise of high resistance states can be simply related to the addition of the polymer as resistance in series, while the variation of the low resistance states is here attributed to the occurrence of surface chemical reactions between polymer functional groups and the metal oxide, which increase the charge carriers available for conduction.
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Affiliation(s)
- Daniele Conti
- Politecnico di Torino, Applied Science and Technology Department, Corso Duca degli Abruzzi 24, I-10129 Torino, Italy
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Surface Treatments and Functional Coatings for Biocompatibility Improvement and Bacterial Adhesion Reduction in Dental Implantology. COATINGS 2016. [DOI: 10.3390/coatings6010007] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Zhang Z, Ji H, Zhang S, Peng D, Fu Q, Wang M, He L, Yue L. Plasma polyacrylic acid and hollow TiO2 spheres modified with rhodamine B for sensitive electrochemical sensing Cu(ii). NEW J CHEM 2016. [DOI: 10.1039/c5nj02483h] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A rhodamine B-modified nanocomposite-based electrochemical sensor was fabricated for selectively and sensitively detecting Cu(ii) in environmental fields.
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Affiliation(s)
- Zhihong Zhang
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration
- P. R. China
- State Laboratory of Surface and Interface Science of Henan Province Zhengzhou University of Light Industry
- Zhengzhou 450001
- P. R. China
| | - Hongfei Ji
- State Laboratory of Surface and Interface Science of Henan Province Zhengzhou University of Light Industry
- Zhengzhou 450001
- P. R. China
| | - Shuai Zhang
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration
- P. R. China
- State Laboratory of Surface and Interface Science of Henan Province Zhengzhou University of Light Industry
- Zhengzhou 450001
- P. R. China
| | - Donglai Peng
- State Laboratory of Surface and Interface Science of Henan Province Zhengzhou University of Light Industry
- Zhengzhou 450001
- P. R. China
| | - Qixuan Fu
- State Laboratory of Surface and Interface Science of Henan Province Zhengzhou University of Light Industry
- Zhengzhou 450001
- P. R. China
| | - Minghua Wang
- State Laboratory of Surface and Interface Science of Henan Province Zhengzhou University of Light Industry
- Zhengzhou 450001
- P. R. China
| | - Linghao He
- State Laboratory of Surface and Interface Science of Henan Province Zhengzhou University of Light Industry
- Zhengzhou 450001
- P. R. China
| | - Lingyu Yue
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration
- P. R. China
- State Laboratory of Surface and Interface Science of Henan Province Zhengzhou University of Light Industry
- Zhengzhou 450001
- P. R. China
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Zhang Z, Zhang S, He L, Peng D, Yan F, Wang M, Zhao J, Zhang H, Fang S. Feasible electrochemical biosensor based on plasma polymerization-assisted composite of polyacrylic acid and hollow TiO2 spheres for sensitively detecting lysozyme. Biosens Bioelectron 2015; 74:384-90. [PMID: 26164009 DOI: 10.1016/j.bios.2015.06.062] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Revised: 06/15/2015] [Accepted: 06/25/2015] [Indexed: 11/19/2022]
Abstract
A composite made of polyacrylic acid and hollow TiO2 spheres (TiO2@PPAA) was prepared by the plasma polymerization method and subsequently used as an electrode material for detecting lysozyme. The chemical structure, surface morphology, and electrochemical performance of the TiO2@PPAA composite were mainly affected by the plasma input power used during plasma polymerization. After optimizing plasma conditions, aptamer strands exhibited high adsorption affinity toward the surface of TiO2@PPAA composite via synergistic effects between TiO2 and PPAA. Electrochemical impedance spectroscopy results showed that the developed TiO2@PPAA aptasensor presents highly sensitive detection ability toward lysozyme; the limit of detection of the proposed aptasensor is 0.015 ng mL(-1) (1.04 pM) within the range of 0.05-100 ng mL(-1) in terms of 3σ value. The film further showed excellent selectivity toward lysozyme in the presence of interfering proteins, such as thrombin, bovine serum albumin, and immunoglobulin E. Thus, this aptasensing strategy might broaden the applications of plasma polymerized nanomaterials in the field of biomedical research and early clinical diagnosis.
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Affiliation(s)
- Zhihong Zhang
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Zhengzhou University of Light Industry, Zhengzhou, PR China; State Laboratory of Surface and Interface Science of Henan Province Zhengzhou University of Light Industry, No. 166, Science Avenue, Zhengzhou 450001, PR China.
| | - Shuai Zhang
- State Laboratory of Surface and Interface Science of Henan Province Zhengzhou University of Light Industry, No. 166, Science Avenue, Zhengzhou 450001, PR China
| | - Linghao He
- State Laboratory of Surface and Interface Science of Henan Province Zhengzhou University of Light Industry, No. 166, Science Avenue, Zhengzhou 450001, PR China
| | - Donglai Peng
- State Laboratory of Surface and Interface Science of Henan Province Zhengzhou University of Light Industry, No. 166, Science Avenue, Zhengzhou 450001, PR China
| | - Fufeng Yan
- State Laboratory of Surface and Interface Science of Henan Province Zhengzhou University of Light Industry, No. 166, Science Avenue, Zhengzhou 450001, PR China
| | - Minghua Wang
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Zhengzhou University of Light Industry, Zhengzhou, PR China
| | - Jihong Zhao
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Zhengzhou University of Light Industry, Zhengzhou, PR China
| | - Hongzhong Zhang
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Zhengzhou University of Light Industry, Zhengzhou, PR China
| | - Shaoming Fang
- Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Zhengzhou University of Light Industry, Zhengzhou, PR China; State Laboratory of Surface and Interface Science of Henan Province Zhengzhou University of Light Industry, No. 166, Science Avenue, Zhengzhou 450001, PR China.
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Qi P, Yang Y, Xiong K, Wang J, Tu Q, Yang Z, Wang J, Chen J, Huang N. Multifunctional Plasma-Polymerized Film: Toward Better Anticorrosion Property, Enhanced Cellular Growth Ability, and Attenuated Inflammatory and Histological Responses. ACS Biomater Sci Eng 2015; 1:513-524. [DOI: 10.1021/ab5001595] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Pengkai Qi
- Key Laboratory of Advanced Technology for Materials of Education
Ministry, ‡The Institute of Biomaterials and Surface Engineering, School of
Materials Science and Engineering, and §Laboratory of Biosensing and MicroMechatronics, Southwest Jiaotong University, Chengdu 610031, China
| | - Ying Yang
- Key Laboratory of Advanced Technology for Materials of Education
Ministry, ‡The Institute of Biomaterials and Surface Engineering, School of
Materials Science and Engineering, and §Laboratory of Biosensing and MicroMechatronics, Southwest Jiaotong University, Chengdu 610031, China
| | - Kaiqin Xiong
- Key Laboratory of Advanced Technology for Materials of Education
Ministry, ‡The Institute of Biomaterials and Surface Engineering, School of
Materials Science and Engineering, and §Laboratory of Biosensing and MicroMechatronics, Southwest Jiaotong University, Chengdu 610031, China
| | - Juan Wang
- Key Laboratory of Advanced Technology for Materials of Education
Ministry, ‡The Institute of Biomaterials and Surface Engineering, School of
Materials Science and Engineering, and §Laboratory of Biosensing and MicroMechatronics, Southwest Jiaotong University, Chengdu 610031, China
| | - Qiufen Tu
- Key Laboratory of Advanced Technology for Materials of Education
Ministry, ‡The Institute of Biomaterials and Surface Engineering, School of
Materials Science and Engineering, and §Laboratory of Biosensing and MicroMechatronics, Southwest Jiaotong University, Chengdu 610031, China
| | - Zhilu Yang
- Key Laboratory of Advanced Technology for Materials of Education
Ministry, ‡The Institute of Biomaterials and Surface Engineering, School of
Materials Science and Engineering, and §Laboratory of Biosensing and MicroMechatronics, Southwest Jiaotong University, Chengdu 610031, China
| | - Jin Wang
- Key Laboratory of Advanced Technology for Materials of Education
Ministry, ‡The Institute of Biomaterials and Surface Engineering, School of
Materials Science and Engineering, and §Laboratory of Biosensing and MicroMechatronics, Southwest Jiaotong University, Chengdu 610031, China
| | - Junying Chen
- Key Laboratory of Advanced Technology for Materials of Education
Ministry, ‡The Institute of Biomaterials and Surface Engineering, School of
Materials Science and Engineering, and §Laboratory of Biosensing and MicroMechatronics, Southwest Jiaotong University, Chengdu 610031, China
| | - Nan Huang
- Key Laboratory of Advanced Technology for Materials of Education
Ministry, ‡The Institute of Biomaterials and Surface Engineering, School of
Materials Science and Engineering, and §Laboratory of Biosensing and MicroMechatronics, Southwest Jiaotong University, Chengdu 610031, China
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Lamberti A, Angelini A, Ricciardi S, Frascella F. A flow-through holed PDMS membrane as a reusable microarray spotter for biomedical assays. LAB ON A CHIP 2015; 15:67-71. [PMID: 25360791 DOI: 10.1039/c4lc01027b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We propose the exploitation of a holed-designed poly(dimethyl)siloxane (PDMS) membrane as an innovative microarray spotter. The membrane is fabricated by a simple technological approach and can be reused several times. A good level of reproducibility is found upon spotting fluorescent proteins at different concentrations over large areas.
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Affiliation(s)
- A Lamberti
- Department of Applied Science and Technology - DISAT, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy.
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Akhavan B, Jarvis K, Majewski P. Development of negatively charged particulate surfaces through a dry plasma-assisted approach. RSC Adv 2015. [DOI: 10.1039/c4ra13767a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
A completely dry method has been introduced for the development of negatively charged oxidized sulfur-terminated particles.
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Affiliation(s)
- Behnam Akhavan
- School of Engineering
- Mawson Institute
- University of South Australia
- Mawson Lakes
- Australia
| | - Karyn Jarvis
- School of Engineering
- Mawson Institute
- University of South Australia
- Mawson Lakes
- Australia
| | - Peter Majewski
- School of Engineering
- Mawson Institute
- University of South Australia
- Mawson Lakes
- Australia
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Bayrakci M, Gezici O, Bas SZ, Ozmen M, Maltas E. Novel humic acid-bonded magnetite nanoparticles for protein immobilization. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 42:546-52. [PMID: 25063152 DOI: 10.1016/j.msec.2014.05.066] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Revised: 04/15/2014] [Accepted: 05/30/2014] [Indexed: 11/16/2022]
Abstract
The present paper is the first report that introduces (i) a useful methodology for chemical immobilization of humic acid (HA) to aminopropyltriethoxysilane-functionalized magnetite iron oxide nanoparticles (APS-MNPs) and (ii) human serum albumin (HSA) binding to the obtained material (HA-APS-MNPs). The newly prepared magnetite nanoparticle was characterized by using Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), and elemental analysis. Results indicated that surface modification of the bare magnetite nanoparticles (MNPs) with aminopropyltriethoxysilane (APS) and HA was successfully performed. The protein binding studies that were evaluated in batch mode exhibited that HA-APS-MNPs could be efficiently used as a substrate for the binding of HSA from aqueous solutions. Usually, recovery values higher than 90% were found to be feasible by HA-APS-MNPs, while that value was around 2% and 70% in the cases of MNPs and APS-MNPs, respectively. Hence, the capacity of MNPs was found to be significantly improved by immobilization of HA. Furthermore, thermal degradation of HA-APS-MNPs and HSA bonded HA-APS-MNPs was evaluated in terms of the Horowitz-Metzger equation in order to determine kinetic parameters for thermal decomposition. Activation energies calculated for HA-APS-MNPs (20.74 kJmol(-1)) and HSA bonded HA-APS-MNPs (33.42 kJmol(-1)) implied chemical immobilization of HA to APS-MNPs, and tight interactions between HA and HA-APS-MNPs.
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Affiliation(s)
- Mevlut Bayrakci
- Ulukisla Vocational School, Nigde University, 51100 Ulukisla, Nigde, Turkey.
| | - Orhan Gezici
- Department of Chemistry, Nigde University, 51100 Nigde, Turkey
| | - Salih Zeki Bas
- Department of Chemistry, Selcuk University, 42031 Konya, Turkey
| | - Mustafa Ozmen
- Department of Chemistry, Selcuk University, 42031 Konya, Turkey
| | - Esra Maltas
- Department of Chemistry, Selcuk University, 42031 Konya, Turkey
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