1
|
Olusegun SJ, Rodrigues GLS, Tiwari S, Krajewski M, Mohallem NDS, Sobczak K, Donten M, Krysinski P. Removal of doxorubicin hydrochloride and crystal violet from aqueous solutions using spray-dried niobium oxide coated with chitosan-activated carbon: Experimental and DFT calculations. Int J Biol Macromol 2024; 266:131158. [PMID: 38552682 DOI: 10.1016/j.ijbiomac.2024.131158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 09/21/2023] [Accepted: 03/25/2024] [Indexed: 04/07/2024]
Abstract
Spray-dried niobium oxide coated with chitosan-activated carbon (NIC) was synthesized and used to remove doxorubicin hydrochloride and crystal violet from aqueous solutions under different parameters such as solution pH (2, 4, 6, and 8), contact time (1 to 9 h), initial concentration (20 to 200 mg L-1), and competing ions (0.1 M of CaCl2 and NaCl). The addition of 5 % chitosan-activated carbon to the matrix of niobium oxide slightly increased the specific surface area from 26 to 30 m2 g-1, with the introduction of a carboxylic functional group. This led to an increase in the amount of adsorbed doxorubicin hydrochloride (DOH) from 30 to 44 mg g-1 and that of crystal violet (CV) from 15 to 32 mg g-1 from the initial respective 100 mg L-1 at pH 8. The data from the concentration study fitted into Liu isotherm having adsorption capacity of 128 and 57 mg g-1 for DOH and CV respectively, while pseudo first and second order are more suitable for adsorption kinetics. The additional functional groups on the IR spectrum of NIC after the adsorption of DOH and CV confirmed the interaction between NIC and the adsorbates' molecules. The mechanism of adsorption was supported by DFT calculations.
Collapse
Affiliation(s)
- Sunday J Olusegun
- Department of Environmental Biotechnology, Faculty of Energy and Environmental Engineering, Silesian University of Technology, Gliwice, Poland..
| | - Gabriel L S Rodrigues
- Department of Chemistry, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, SE-106 91 Stockholm, Sweden
| | - Santosh Tiwari
- Department of Chemistry, Nitte Mahalinga Adyanthaya Memorial Institute of Technology, Mangaluru, Karnataka 547110, India
| | | | - Nelcy D S Mohallem
- Universidade Federal de Minas Gerais, Departamento de Química, Laboratório de Materiais Nanoestruturados, Belo Horizonte, MG, Brazil
| | - Kamil Sobczak
- Faculty of Chemistry, Biological and Chemical Research Centre, University of Warsaw, Warsaw, Poland
| | - Mikołaj Donten
- Faculty of Chemistry, University of Warsaw, Warsaw, Poland
| | - Pawel Krysinski
- Faculty of Chemistry, University of Warsaw, Warsaw, Poland..
| |
Collapse
|
2
|
Fávaro YB, Fuziki MEK, Fidelis MZ, Abreu E, Tusset AM, Brackmann R, Lenzi GG. Sol-gel and Pechini niobium modified: synthesis, characterization and application in the 2,4-D herbicide degradation. J Environ Sci Health B 2024; 59:50-61. [PMID: 38054847 DOI: 10.1080/03601234.2023.2290428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
In this work, a comparison was made between the synthesis of niobium-based materials (Nb2O5), both in terms of material characterization and catalytic performance. The methods used were chemical mixtures: modified sol-gel and Pechini. The materials were calcined at different temperatures (753, 873 and 993K) and characterized by the following techniques: photoacousticspectroscopy (PAS), zero charge point (pHPZC), scanning electron microscopy (SEM/EDS), thermogravimetric analysis (TGA/DTG) and X-ray diffraction (XRD). The photocatalytic process was carried out to evaluate the degradation of 2,4-dichlorophenoxyacetic acid (2,4-D) under UV radiation (250 W mercury vapor lamp) and different experimental conditions. In addition, to better understand the influence of parameters such as pH, catalyst concentration (0.2, 0.5 and 0.8 g L-1) and calcination temperature, a Design of Experiments (DoE) was used. The results indicated that despite having similar structures and phases in the XRD analysis, the morphology presents two distinct surfaces, due to the preparation method. Differences in the synthesis method affected the catalytic activity in the parameters studied. Although the zero charge point values are close (6.18-6.36), we observed differences in the band gap depending on the calcination temperature. In the optimal condition studied, the catalyst prepared by the sol-gel method obtained the best results.
Collapse
Affiliation(s)
- Yuri B Fávaro
- Departamento de Engenharia Química, Universidade Tecnológica Federal Do Paraná, Ponta Grossa, Brazil
| | - Maria E K Fuziki
- Departamento de Engenharia Química, Universidade Estadual de Maringá, Maringá, Brazil
| | - Michel Z Fidelis
- Departamento de Engenharia Química, Universidade Estadual de Maringá, Maringá, Brazil
| | - Eduardo Abreu
- Departamento de Engenharia Química, Universidade Estadual de Maringá, Maringá, Brazil
| | - Angelo M Tusset
- Departamento de Engenharia de Produção, Universidade Tecnológica Federal Do Paraná, Ponta Grossa, Brazil
| | - Rodrigo Brackmann
- Departamento de Química, Universidade Tecnológica Federal do Paraná, Pato Branco, Brazil
| | - Giane G Lenzi
- Departamento de Engenharia Química, Universidade Tecnológica Federal Do Paraná, Ponta Grossa, Brazil
| |
Collapse
|
3
|
Keerthika Devi R, Ganesan M, Chen TW, Chen SM, Akilarasan M, Shaju A, Rwei SP, Yu J, Yu YY. In-situ formation of niobium oxide – niobium carbide – reduced graphene oxide ternary nanocomposite as an electrochemical sensor for sensitive detection of anticancer drug methotrexate. J Colloid Interface Sci 2023; 643:600-612. [PMID: 37003869 DOI: 10.1016/j.jcis.2023.03.142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 03/17/2023] [Accepted: 03/22/2023] [Indexed: 03/28/2023]
Abstract
Engineering the nanostructure of an electrocatalyst is crucial in developing a high-performance electrochemical sensor. This work exhibits the hydrothermal followed by annealing synthesis of niobium oxide/niobium carbide/reduced graphene oxide (NbO/NbC/rGO) ternary nanocomposite. The oval-shaped NbO/NbC nanoparticles cover the surface of rGO evenly, and the rGO nanosheets are interlinked to produce a micro-flower-like architecture. The NbO/NbC/rGO nanocomposite-modified electrode is presented here for the first time for the rapid and sensitive electrochemical detection of the anticancer drug methotrexate (MTX). Down-sized NbO/NbC nanoparticles and rGO's high surface area provide many active sites with a rapid electron transfer rate, making them ideal for MTX detection. In comparison to previously reported MTX sensors, the developed drug sensor exhibits a lower oxidation potential and a higher peak current responsiveness. The constructed sensors worked analytically well under optimal conditions, as shown by a low detection limit of 1.6 nM, a broad linear range of 0.1-850 µM, and significant recovery findings (∼98 %, (n = 3)) in real samples analysis. Thus, NbO/NbC/rGO nanocomposite material for high-performance electrochemical applications seems promising.
Collapse
Affiliation(s)
- Ramadhass Keerthika Devi
- Department of Chemical Engineering and Biotechnology, College of Engineering, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan
| | - Muthusankar Ganesan
- School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong
| | - Tse-Wei Chen
- Department of Materials, Imperial College London, London SW7 2AZ, United Kingdom.
| | - Shen-Ming Chen
- Department of Chemical Engineering and Biotechnology, College of Engineering, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan.
| | - Muthumariappan Akilarasan
- Department of Chemical Engineering and Biotechnology, College of Engineering, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan
| | - Anlin Shaju
- International College of Semiconductor Technology (ICST), National Yang Ming Chiao Tung University, Taiwan
| | - Syang-Peng Rwei
- Research and Development Center for Smart Textile Technology, National Taipei University of Technology, Taipei 106, Taiwan; Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taiwan
| | - Jaysan Yu
- Well Fore Special Wire Corporation, 10, Tzu-Chiang 7rd., Chung-Li Industrial Park, Taoyuan, Taiwan
| | - Yen-Yao Yu
- Department of Chemical Engineering and Biotechnology, College of Engineering, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan
| |
Collapse
|
4
|
Hijmans SN. The Tantalum Metals (1801-1866): Nineteenth-Century Analytical Chemistry and the Identification of Chemical Elements. Ambix 2022; 69:399-419. [PMID: 36250926 DOI: 10.1080/00026980.2022.2133806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
This paper examines the identification of chemical elements using mineral analysis, focusing on the controversy surrounding the "tantalum metals" between 1801 and 1866. Of these metals, only tantalum and niobium are still recognised as elements today; the discovery claims of columbium, pelopium, ilmenium and dianium were all retracted or refuted. Despite the theoretical and institutional changes that chemistry underwent during this time, the debates on the tantalum metals point towards a continuity in the identification of metals. For most of the nineteenth century, chemists continued to use the same types of analytical procedures as their mid-eighteenth-century predecessors. These analytical methods enabled the identification of metals based on the chemical behaviour of their compounds, without requiring their isolation in the form of simple substances (that is, as metals). Accordingly, the central questions in all of the debates on the tantalum metals were the correct identification of the properties of compounds and the elimination of impurities, rather than the simplicity of the new metals. The story of the tantalum metals therefore illustrates the fact that, despite the definition of chemical elements as simple substances, the discovery of new (metallic) elements only rarely coincided with the isolation of new simple substances.
Collapse
Affiliation(s)
- Sarah N Hijmans
- Laboratoire SPHERE UMR 7219, Université Paris Cité, Paris, France
| |
Collapse
|
5
|
Sun Y, Ota Y, Fujii T, Yamashita Y, Kim HP, Wan H, Jiang X, Karaki T. Enhanced Properties of 3-MHz Sliver-Mode Vibrators for Cardiac Probes With Alternating Current Poling for Pb(Mg 1/3Nb 2/3)O 3-PbTiO 3 Single Crystals. IEEE Trans Ultrason Ferroelectr Freq Control 2022; 69:3087-3094. [PMID: 35981066 DOI: 10.1109/tuffc.2022.3199741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
We investigated the effects of alternating current poling (ACP) on the piezoelectric and dielectric properties of 3-MHz sliver mode (L13 mm × W0.10-0.25 mm × T0.48 mm) vibrators fashioned from Pb(Mg1/3Nb2/3)O3-0.30PbTiO3 (PMN-0.30PT) single crystal (SC) plate manufactured using the continuous-feeding Bridgman (CF-BM) method for cardiac probes. The ACP SC plate (L13 mm × W24 mm × T0.48 mm) exhibited ultrahigh dielectric permittivity ( εT33/ε0 ) and piezoelectric coefficient ( d33 ) of 9690 and 2920 pC/N, respectively. After array dicing, the SC slivers with widths of 0.10, 0.15, 0.20, and 0.25 mm were obtained, and their average εT33/ε0 values decreased from the SC plate εT33/ε0 by 45% (5330), 29% (6880), 19% (7840), and 15% (8240), respectively, possibly because of heat and mechanical damage during the dicing. A combination of the ACP and a postdicing direct current poling (ACP-DCP) recovered their εT33/ε0 values to 6050, 7080, 8140, and 8540, respectively. The sliver mode electromechanical coupling factors ( k'33 ) were confirmed to exceed 93% after the ACP-DCP process, which were more than 4% higher than those of DCP-DCP SC slivers. The measured impedance spectra indicated that the SC slivers with 0.10-0.20 mm in width showed no spurious mode vibration near the fundamental k'33 mode. We conclude that the ACP-DCP SC slivers maintained more enhanced piezoelectric and dielectric properties than the DCP-DCP samples. These results will have important implications for the commercial application of ACP technology to medical imaging ultrasound probes.
Collapse
|
6
|
Liu M, Tang H, Zhang W, Wang Z, Yang X, Su R, Long X, He C. Complete Sets of Material Constants of [001]-Poled 0.72Pb(Mg 1/3Nb 2/3)O 3- 0.28PbTiO 3 Single Crystals Using Alternating Current Poling. IEEE Trans Ultrason Ferroelectr Freq Control 2022; 69:3081-3086. [PMID: 34995187 DOI: 10.1109/tuffc.2022.3141461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Alternating current poling (ACP) is an effective method to improve the piezoelectric performance of relaxor-PbTiO3 (PT) ferroelectric single crystal. 0.72Pb(Mg1/3Nb2/3)O3-0.28PbTiO3 (PMN-PT) single crystals have been used to fabricate piezoelectric transducers for medical imaging. Up to date, there are no reports about the full matrix material constants of PMN-0.28PT single crystals poled by ACP. Here, we report the complete sets of elastic, dielectric, and piezoelectric properties of [001]-poled PMN-0.28PT single crystals by direct current poling (DCP) and ACP through the resonance method. The results show that [001]-poled rhombohedral PMN-0.28PT single crystals exhibit the enhancement of longitudinal and transverse piezoelectric properties ( d33 ∼ 2000 pC/N, d31 ∼ -1010 pC/N) after ACP. Compared with DCP samples ( d33 ∼ 1660 pC/N, d31 ∼ -780 pC/N), the values of d33 and d31 increase 20% and 29%, respectively. While the d15 value decrease from 110 pC/N for DCP sample to 90 pC/N for ACP sample, showing the decrease in transverse shear piezoelectric properties. In addition, the elastic stiffness coefficients c11 , c12 , c13 , the elastic compliance coefficients s11 , s12 , and the dielectric constants ε11 , ε33 have great change compared with DCP and ACP samples. This variation of the property matrices provides a reference for high-performance piezoelectric device design.
Collapse
|
7
|
Fuziki MEK, Abreu E, Napoli JS, Nunes SC, Brackmann R, Machado TCS, Semianko BC, Lenzi GG. Cu/Nb 2O 5, Fe/Nb 2O 5 and Cu-Fe/Nb 2O 5 applied in salicylic acid degradation: Parameters studies and photocatalytic activity. J Environ Sci Health A Tox Hazard Subst Environ Eng 2022; 57:797-812. [PMID: 36069164 DOI: 10.1080/10934529.2022.2117525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Revised: 08/16/2022] [Accepted: 08/18/2022] [Indexed: 06/15/2023]
Abstract
This study describes the synthesis of Cu/Nb2O5, Fe/Nb2O5, and Cu-Fe/Nb2O5 catalysts obtained by incorporating copper and/or iron metals into niobium pentoxide (Nb2O5). The new materials were characterized by the following techniques: Thermogravimetric Analysis (TA), surface and pore analysis, X-ray diffractometry (XRD), and Fourier Transform Infrared Spectroscopy (FT-IR). The catalyst was applied in the photocatalytic degradation of salicylic acid (SA). The influence of different parameters (calcined temperature, pH, and metal addition) on the photocatalytic reaction was evaluated. The results indicated that catalysts containing copper were more active and pH influenced the SA degradation process. SA removal results indicated that Cu/Nb2O5 photocatalyst presented a 1.5 fold higher degradation after 120 min in comparison to Cu-Fe/Nb2O5 and 4.6 fold higher than Fe/Nb2O5 catalyst, all them calcined at 400 °C. In tests carried out in the presence of formic acid, increasing the pH from about 3 to 7 allowed an almost 3.4-fold increase in SA degradation for the Cu-Fe/Nb2O5 catalyst calcined at 400 °C.
Collapse
Affiliation(s)
- Maria E K Fuziki
- Department of Chemical Engineering, State University of Maringá, Maringá, PR, Brazil
| | - Eduardo Abreu
- Department of Chemical Engineering, State University of Maringá, Maringá, PR, Brazil
| | - Jose S Napoli
- Department of Chemical Engineering, Federal University of Technology - Paraná, Curitiba, PR, Brazil
| | - Sabrina C Nunes
- Department of Chemical Engineering, Federal University of Technology, Pato Branco, PR, Brazil
| | - Rodrigo Brackmann
- Department of Chemical Engineering, Federal University of Technology, Pato Branco, PR, Brazil
| | - Tauani C S Machado
- Department of Chemical Engineering, Federal University of Technology - Paraná, Curitiba, PR, Brazil
| | - Betina C Semianko
- Department of Chemical Engineering, Federal University of Technology - Paraná, Curitiba, PR, Brazil
| | - Giane G Lenzi
- Department of Chemical Engineering, Federal University of Technology - Paraná, Curitiba, PR, Brazil
| |
Collapse
|
8
|
Chen F, Jiang T, Zhai B, Liu Y, Yang X, Wang X, Ren F, Tu D, Ding T. Mechanoluminescence from an Ion-Irradiated Single Crystal of Lithium Niobium Oxide. J Phys Chem Lett 2022; 13:5394-5398. [PMID: 35678737 DOI: 10.1021/acs.jpclett.2c01182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Mechanoluminescence (ML) is a well-known phenomenon that has a wide range of applications in security monitoring, biomechanical sensing, and displays. Although several mechanisms relating to ML have been proposed, significant ambiguity persists due to the coexistence of crystal boundaries, luminescence centers, and defects within the samples, making them hard to disentangle. Here we preclude such ambiguity by using a Kr+-irradiated single crystal of lithium niobium oxide (LiNbO3) as the ML materials so that oxygen vacancies are retained to modulate the ML properties. We explore the ion concentration- and species-dependent ML properties along with the band calculations to explicitly reveal that it is the trapped electrons at the oxygen vacancies that are transferred to the conduction band under the piezopotentials of LiNbO3, which combine with holes in the valence band and emit photons. This in-depth understanding not only clarifies the long-standing obscurity of the ML mechanism but also paves a rational and scalable way for the design of advanced ML materials with superior performances.
Collapse
Affiliation(s)
- Fangqi Chen
- Key Laboratory of Artificial Micro/Nano Structure of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Tao Jiang
- Key Laboratory of Artificial Micro/Nano Structure of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Baoxing Zhai
- Key Laboratory of Artificial Micro/Nano Structure of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Yong Liu
- Key Laboratory of Artificial Micro/Nano Structure of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Xiuxia Yang
- Key Laboratory of Artificial Micro/Nano Structure of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Xujie Wang
- Key Laboratory of Artificial Micro/Nano Structure of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Feng Ren
- Key Laboratory of Artificial Micro/Nano Structure of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Dong Tu
- Key Laboratory of Artificial Micro/Nano Structure of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Tao Ding
- Key Laboratory of Artificial Micro/Nano Structure of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| |
Collapse
|
9
|
Guliy OI, Zaitsev BD, Semyonov AP, Alsowaidi AКM, Teplykh AA, Karavaeva OA, Borodina IA. Microbial acoustic sensor test-system based on a piezoelectric resonator with a lateral electric field for kanamycin detection in liquid. Ultrasonics 2022; 120:106651. [PMID: 34847528 DOI: 10.1016/j.ultras.2021.106651] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 11/19/2021] [Accepted: 11/22/2021] [Indexed: 06/13/2023]
Abstract
A microbial test-system for real-time determination of low/residual concentrations of kanamycin in a liquid without the need for special labels is presented. The main element of the system was a piezoelectric resonator excited by a lateral electric field based on an X-cut lithium niobate plate 0.5 mm thick with two rectangular electrodes on one side. On the other side of the resonator, there was a 1.5 ml liquid container. As a sensory element we used Escherichia coli B-878 microbial cells, which are sensitive to kanamycin. For measurement 1 ml of this cells suspension was placed in a liquid container and then the test liquid in the amount of 2 μl containing kanamycin was added. The change in the real part of the electrical impedance of the resonator before and after the test liquid addition was used as an analytical signal which indicated the presence of kanamycin. The lower limit of determination of kanamycin turned out to be 1.0 μg/ml with an analysis time of 10 min. The test-system allows to detect kanamycin in the presence of such antibiotic as ampicillin and polymixin.
Collapse
Affiliation(s)
- O I Guliy
- Institute of Biochemistry and Physiology of Plants and Microorganisms of Russian Academy of Sciences, Saratov 410049, Russia
| | - B D Zaitsev
- Kotel'nikov Institute of Radio Engineering and Electronics of Russian Academy of Sciences, Saratov Branch, Saratov 410019, Russia.
| | - A P Semyonov
- Kotel'nikov Institute of Radio Engineering and Electronics of Russian Academy of Sciences, Saratov Branch, Saratov 410019, Russia
| | - A К M Alsowaidi
- Institute of Biochemistry and Physiology of Plants and Microorganisms of Russian Academy of Sciences, Saratov 410049, Russia
| | - A A Teplykh
- Kotel'nikov Institute of Radio Engineering and Electronics of Russian Academy of Sciences, Saratov Branch, Saratov 410019, Russia
| | - O A Karavaeva
- Institute of Biochemistry and Physiology of Plants and Microorganisms of Russian Academy of Sciences, Saratov 410049, Russia
| | - I A Borodina
- Kotel'nikov Institute of Radio Engineering and Electronics of Russian Academy of Sciences, Saratov Branch, Saratov 410019, Russia
| |
Collapse
|
10
|
Petriev I, Pushankina P, Shostak N, Baryshev M. Gas-Transport Characteristics of PdCu–Nb–PdCu Membranes Modified with Nanostructured Palladium Coating. Int J Mol Sci 2021; 23:ijms23010228. [PMID: 35008654 PMCID: PMC8745148 DOI: 10.3390/ijms23010228] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Revised: 12/18/2021] [Accepted: 12/24/2021] [Indexed: 12/01/2022] Open
Abstract
A method for obtaining composite gas-diffusion PdCu–Nb–PdCu membranes modified with a nanostructured crystalline coating was developed to increase the performance of Nb-based membranes. A modifying functional layer with a controlled size and composition was synthesized by electrochemical deposition, which made it possible to determine a certain geometric shape for palladium nanocrystallites. Developed PdCu–Nb–PdCu membranes have demonstrated flux values up to 0.232 mmol s−1 m−2 in the processes of diffusion purification of hydrogen at 400 °C. A very significant difference in the hydrogen fluxes through the modified and non-modified composite PdCu–Nb–PdCu membranes reached 1.73 times at the lower threshold temperature of 300 °C. Cu doping of protective layer did not affect the selective properties of the membranes, which was confirmed by the obtained high selectivity values up to 1323, and made it possible to reduce the noble metal content. The research data indicate that the modification of the membrane surface significantly accelerates the hydrogen transfer process at sufficiently low temperatures due to the acceleration of dissociative–associative processes on the surface. The reported approach demonstrates new possibilities for creating productive and cost-efficient membranes based on niobium.
Collapse
Affiliation(s)
- Iliya Petriev
- Department of Physics, Kuban State University, 350040 Krasnodar, Russia; (P.P.); (M.B.)
- Laboratory of Problems of Stable Isotope Spreading in Living Systems, Southern Scientific Centre of the RAS, 344000 Rostov-on-Don, Russia
- Department of Oil and Gas Business, Kuban State Technological University, 350040 Krasnodar, Russia;
- Correspondence:
| | - Polina Pushankina
- Department of Physics, Kuban State University, 350040 Krasnodar, Russia; (P.P.); (M.B.)
- Department of Oil and Gas Business, Kuban State Technological University, 350040 Krasnodar, Russia;
| | - Nikita Shostak
- Department of Oil and Gas Business, Kuban State Technological University, 350040 Krasnodar, Russia;
| | - Mikhail Baryshev
- Department of Physics, Kuban State University, 350040 Krasnodar, Russia; (P.P.); (M.B.)
- Laboratory of Problems of Stable Isotope Spreading in Living Systems, Southern Scientific Centre of the RAS, 344000 Rostov-on-Don, Russia
- Department of Oil and Gas Business, Kuban State Technological University, 350040 Krasnodar, Russia;
| |
Collapse
|
11
|
da Silva Dias C, Rossi MC, Apolonio EVP, Dos Santos Rosa G, Pfeifer JPH, Hussni CA, Watanabe MJ, Alves ALG. Low Mg content on Ti-Nb-Sn alloy when in contact with eBMMSCs promotes improvement of its biological functions. J Mater Sci Mater Med 2021; 32:144. [PMID: 34862929 PMCID: PMC8643293 DOI: 10.1007/s10856-021-06620-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 11/07/2021] [Indexed: 06/13/2023]
Abstract
Magnesium is a metal used in the composition of titanium alloys and imparts porosity. Due to its osteoconductive, biocompatible and biodegradable characteristics, its application in the development of biomedical materials has become attractive. This study aimed to evaluate the influence of magnesium present in porous Ti-Nb-Sn alloys, which have a low elastic modulus in adhesive, osteogenic properties and the amount of reactive intracellular oxygen species released in mesenchymal stem cells derived from bone marrow equine bone (eBMMSCs). Mechanical properties of the alloy, such as hardness, compressive strength and elastic modulus, were analyzed, as well as surface morphological characteristics through scanning electron microscopy. The evaluation of magnesium ion release was performed by atomic force spectroscopy. The biological characteristics of the alloy, when in contact with the alloy surface and with the culture medium conditioned with the alloy, were studied by SEM and optical microscopy. Confirmation of osteogenic differentiation by alizarin red and detection of ROS using a Muse® Oxidative Stress Kit based on dihydroetide (DHE). The alloy showed an elastic modulus close to cortical bone values. The hardness was close to commercial Ti grade 2, and the compressive strength was greater than the value of cortical bone. The eBMMSCs adhered to the surface of the alloy during the experimental time. Osteogenic differentiation was observed with the treatment of eBMMMSCs with conditioned medium. The eBMMSCs treated with conditioned medium decreased ROS production, indicating a possible antioxidant defense potential of magnesium release.
Collapse
Affiliation(s)
- Carolina da Silva Dias
- Department of Veterinary Surgery and Anesthesiology, São Paulo State University - Júlio de Mesquita Filho Unesp Prof. Doutor Walter Mauricio Correa St., n/n, Botucatu, SP, ZIP- 18618-681, Brazil
| | - Mariana Correa Rossi
- Department of Veterinary Surgery and Anesthesiology, São Paulo State University - Júlio de Mesquita Filho Unesp Prof. Doutor Walter Mauricio Correa St., n/n, Botucatu, SP, ZIP- 18618-681, Brazil.
| | - Emanuel V P Apolonio
- Department of Veterinary Surgery and Anesthesiology, São Paulo State University - Júlio de Mesquita Filho Unesp Prof. Doutor Walter Mauricio Correa St., n/n, Botucatu, SP, ZIP- 18618-681, Brazil
| | - Gustavo Dos Santos Rosa
- Department of Veterinary Surgery and Anesthesiology, São Paulo State University - Júlio de Mesquita Filho Unesp Prof. Doutor Walter Mauricio Correa St., n/n, Botucatu, SP, ZIP- 18618-681, Brazil
| | - João Pedro Hübbe Pfeifer
- Department of Veterinary Surgery and Anesthesiology, São Paulo State University - Júlio de Mesquita Filho Unesp Prof. Doutor Walter Mauricio Correa St., n/n, Botucatu, SP, ZIP- 18618-681, Brazil
| | - Carlos Alberto Hussni
- Department of Veterinary Surgery and Anesthesiology, São Paulo State University - Júlio de Mesquita Filho Unesp Prof. Doutor Walter Mauricio Correa St., n/n, Botucatu, SP, ZIP- 18618-681, Brazil
| | - Marcos Jun Watanabe
- Department of Veterinary Surgery and Anesthesiology, São Paulo State University - Júlio de Mesquita Filho Unesp Prof. Doutor Walter Mauricio Correa St., n/n, Botucatu, SP, ZIP- 18618-681, Brazil
| | - Ana Liz Garcia Alves
- Department of Veterinary Surgery and Anesthesiology, São Paulo State University - Júlio de Mesquita Filho Unesp Prof. Doutor Walter Mauricio Correa St., n/n, Botucatu, SP, ZIP- 18618-681, Brazil
| |
Collapse
|
12
|
Chen R, Kan L, Duan F, He L, Wang M, Cui J, Zhang Z, Zhang Z. Surface plasmon resonance aptasensor based on niobium carbide MXene quantum dots for nucleocapsid of SARS-CoV-2 detection. Mikrochim Acta 2021; 188:316. [PMID: 34476615 PMCID: PMC8412382 DOI: 10.1007/s00604-021-04974-z] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 08/11/2021] [Indexed: 12/19/2022]
Abstract
A novel label-free surface plasmon resonance (SPR) aptasensor has been constructed for the detection of N-gene of SARS-CoV-2 by using thiol-modified niobium carbide MXene quantum dots (Nb2C-SH QDs) as the bioplatform for anchoring N-gene-targeted aptamer. In the presence of SARS-CoV-2 N-gene, the immobilized aptamer strands changed their conformation to specifically bind with N-gene. It thus increased the contact area or enlarged the distance between aptamer and the SPR chip, resulting in a change of the SPR signal irradiated by the laser (He-Ne) with the wavelength (λ) of 633 nm. Nb2C QDs were derived from Nb2C MXene nanosheets via a solvothermal method, followed by functionalization with octadecanethiol through a self-assembling method. Subsequently, the gold chip for SPR measurements was modified with Nb2C-SH QDs via covalent binding of the Au-S bond also by self-assembling interaction. Nb2C-SH QDs not only resulted in high bioaffinity toward aptamer but also enhanced the SPR response. Thus, the Nb2C-SH QD-based SPR aptasensor had low limit of detection (LOD) of 4.9 pg mL−1 toward N-gene within the concentration range 0.05 to 100 ng mL−1. The sensor also showed excellent selectivity in the presence of various respiratory viruses and proteins in human serum and high stability. Moreover, the Nb2C-SH QD-based SPR aptasensor displayed a vast practical application for the qualitative analysis of N-gene from different samples, including seawater, seafood, and human serum. Thus, this work can provide a deep insight into the construction of the aptasensor for detecting SARS-CoV-2 in complex environments.
Collapse
Affiliation(s)
- Rongyuan Chen
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry, No. 136, Science Avenue, Zhengzhou, 450001, People's Republic of China
| | - Lun Kan
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry, No. 136, Science Avenue, Zhengzhou, 450001, People's Republic of China
| | - Fenghe Duan
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry, No. 136, Science Avenue, Zhengzhou, 450001, People's Republic of China
| | - Linghao He
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry, No. 136, Science Avenue, Zhengzhou, 450001, People's Republic of China
| | - Minghua Wang
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry, No. 136, Science Avenue, Zhengzhou, 450001, People's Republic of China
| | - Jing Cui
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry, No. 136, Science Avenue, Zhengzhou, 450001, People's Republic of China
| | - Zhihong Zhang
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry, No. 136, Science Avenue, Zhengzhou, 450001, People's Republic of China.
| | - Zhonghou Zhang
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry, No. 136, Science Avenue, Zhengzhou, 450001, People's Republic of China.
| |
Collapse
|
13
|
Mutharani B, Gopi PK, Chen SM, Tsai HC, Ahmed F, Haidyrah AS, Ranganathan P. Amperometric determination of ecotoxic N-methyl-p-aminophenol sulfate in photographic solution and river water samples based on graphene oxide/CeNbO 4 nanocomposite catalyst. Ecotoxicol Environ Saf 2021; 220:112373. [PMID: 34058675 DOI: 10.1016/j.ecoenv.2021.112373] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 05/10/2021] [Accepted: 05/23/2021] [Indexed: 06/12/2023]
Abstract
The electronic conductivity of the metal oxides is generally increased by hybridization of highly conductive carbon supportive materials. In this present work, we have demonstrated a novel one-pot preparation of cerium niobate (CeNbO4) nanoparticles embedded with graphene oxide (GO/CeNbO4) composite, for ultrasensitive detection of the photographic developing agent, metol (MTL). The as-prepared GO/CeNbO4 was analyzed by various characterization techniques. The intensive characterization techniques were used to affirm the detailed structural moiety, size, morphology, and surface area of GO/CeNbO4. The GO/CeNbO4 modified glassy carbon electrode (GCE) affords a superior electrocatalytic activity toward MTL. The obtained amperometric response on the GO/CeNbO4/GCE holding an extremely low level detection of 10 nM and superior sensitivity of 10.97 µA µM-1 cm-2 toward MTL detection. Besides, the GO/CeNbO4/GCE also gives excellent selectivity, stability, repeatability, and reproducibility. We achieved excellent recovery results in real photographic solution and river water samples analysis with great accuracy. This work offers a novel insight into the growth of the carbon-based niobate family with electrochemical sensor applications.
Collapse
Affiliation(s)
- Bhuvanenthiran Mutharani
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei, Taiwan, ROC; Advanced Membrane Materials Center, National Taiwan University of Science and Technology, Taipei, Taiwan, ROC; Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC
| | - Praveen Kumar Gopi
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC
| | - Shen-Ming Chen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC.
| | - Hsieh-Chih Tsai
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei, Taiwan, ROC; Advanced Membrane Materials Center, National Taiwan University of Science and Technology, Taipei, Taiwan, ROC; R&D Center for Membrane Technology, Chung Yuan Christian University, Chungli, Taoyuan, Taiwan, ROC.
| | - Faheem Ahmed
- Department of Physics, College of Science, King Faisal University, P.O Box 400, Hofuf, Al-Ahsa 31982, Saudi Arabia
| | - Ahmed S Haidyrah
- Nuclear and Radiological Control Unit, King Abdulaziz City for Science and Technology (KACST), Riyadh 11442, Saudi Arabia
| | - Palraj Ranganathan
- Institute of Organic and Polymeric Materials, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC
| |
Collapse
|
14
|
Singh G, Sharma M, Vaish R. Flexible Ag@LiNbO 3/PVDF Composite Film for Piezocatalytic Dye/Pharmaceutical Degradation and Bacterial Disinfection. ACS Appl Mater Interfaces 2021; 13:22914-22925. [PMID: 33956429 DOI: 10.1021/acsami.1c01314] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A flexible poly(vinylidene difluoride) (PVDF) composite film embedding LiNbO3 ceramics decorated with silver nanoparticles (Ag NPs) has been synthesized using the solvent casting method. The polar β-phase, Ag NPs, and LiNbO3 phases were confirmed in the composite film using various characterization methods. The composite film showed promising degradation of cationic and anionic dyes using piezocatalysis under ultrasonication. Moreover, this composite film also effectively degraded two model pharmaceutical pollutants named tetracycline and ciprofloxacin using piezocatalysis under ultrasonication. In addition to this, this composite film piezocatalytically removed more than 99.999% of Escherichia coli and 96.65% of Staphylococcus aureus bacteria within 180 min of sonication. The piezocatalytic performance of the PVDF composite film embedding Ag-loaded LiNbO3 in all three applications was superior to that obtained in the case of the PVDF film embedding LiNbO3 and the bare PVDF film. This demonstrates the pronounced effect of Ag NPs in the increase of piezocatalytic activity in the composite film.
Collapse
Affiliation(s)
- Gurpreet Singh
- School of Engineering, Indian Institute of Technology Mandi, Mandi, Himachal Pradesh 175005, India
| | - Moolchand Sharma
- School of Engineering, Indian Institute of Technology Mandi, Mandi, Himachal Pradesh 175005, India
| | - Rahul Vaish
- School of Engineering, Indian Institute of Technology Mandi, Mandi, Himachal Pradesh 175005, India
| |
Collapse
|
15
|
Moreto JA, Gelamo RV, da Silva MV, Steffen TT, de Oliveira CJF, de Almeida Buranello PA, Pinto MR. New insights of Nb 2O 5-based coatings on the 316L SS surfaces: enhanced biological responses. J Mater Sci Mater Med 2021; 32:25. [PMID: 33675445 PMCID: PMC7936936 DOI: 10.1007/s10856-021-06498-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 02/01/2021] [Accepted: 02/16/2021] [Indexed: 05/21/2023]
Abstract
This communication aims to propose new insights of Nb2O5-based coatings on the 316L SS surface with great prospects to be used in the dentistry field as brackets. The Nb2O5 thin film was incorporated into the 316L SS by using PVD method. For this purpose, the studied system was characterized structurally and morphologically by using AFM, FTIR-IRRAS, Raman spectroscopy and X-ray photoelectron spectroscopy (XPS). Biological assays were performed using human gingival fibroblast cell-line HGF-1. In agreement with FTIR and Raman results, the XPS technique indicates that Nb is present in an oxidation state assigned to Nb2O5. Furthermore, the coatings produced by PVD technique are less toxic and induces less inflammation in gingival cells (cell-line HGF-1), suggesting the strategy of use Nb2O5 thin film to cover the 316L SS promoted since its protection of the physiological environment to its biocompatibility improvement.
Collapse
Affiliation(s)
- Jéferson Aparecido Moreto
- Institute of Exact Sciences, Naturals and Education, Federal University of Triângulo Mineiro (UFTM), Avenida Doutor Randolfo Borges Júnior, Univerdecidade, Uberaba, Minas Gerais, Brazil.
| | - Rogério Valentim Gelamo
- Institute of Technological and Exact Sciences, Federal University of Triângulo Mineiro (UFTM), Avenida Doutor Randolfo Borges Júnior, Univerdecidade, Uberaba, Minas Gerais, Brazil
| | - Marcos Vinicius da Silva
- Laboratory of Immunology and Bioinformatics, Institute of Natural and Biological Sciences, Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | | | - Carlo José Freire de Oliveira
- Laboratory of Immunology and Bioinformatics, Institute of Natural and Biological Sciences, Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | - Patrícia Andressa de Almeida Buranello
- Institute of Exact Sciences, Naturals and Education, Federal University of Triângulo Mineiro (UFTM), Avenida Doutor Randolfo Borges Júnior, Univerdecidade, Uberaba, Minas Gerais, Brazil
| | | |
Collapse
|
16
|
Lu Y, Xu K, Yang MQ, Tang SY, Yang TY, Fujita Y, Honda S, Arie T, Akita S, Chueh YL, Takei K. Highly stable Pd/HNb 3O 8-based flexible humidity sensor for perdurable wireless wearable applications. Nanoscale Horiz 2021; 6:260-270. [PMID: 33470262 DOI: 10.1039/d0nh00594k] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Real-time, daily health monitoring can provide large amounts of patient data, which may greatly improve the likelihood of diagnosing health conditions at an early stage. One potential sensor is a flexible humidity sensor to monitor moisture and humidity information such as dehydration. However, achieving a durable functional nanomaterial-based flexible humidity sensor remains a challenge due to partial desorption of water molecules during the recovery process, especially at high humidities. In this work, we demonstrate a highly stable resistive-type Pd/HNb3O8 humidity sensor, which exhibits a perdurable performance for over 100 h of cycle tests under a 90% relative humidity (RH) without significant performance degradation. One notable advantage of the Pd/HNb3O8 humidity sensor is its ability to regulate hydroniums due to the strong reducibility of H atoms dissociated on the Pd surface. This feature realizes a high stability even at a high humidity (99.9% RH). Using this superior performance, the Pd/HNb3O8 humidity sensor realizes wireless monitoring of the changes in the fingertip humidity of an adult under different physiological states, demonstrating a facile and reliable path for dehydration diagnosis.
Collapse
Affiliation(s)
- Yuyao Lu
- Department of Physics and Electronics, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Astolfi M, Rispoli G, Anania G, Artioli E, Nevoso V, Zonta G, Malagù C. Tin, Titanium, Tantalum, Vanadium and Niobium Oxide Based Sensors to Detect Colorectal Cancer Exhalations in Blood Samples. Molecules 2021; 26:molecules26020466. [PMID: 33477309 PMCID: PMC7829789 DOI: 10.3390/molecules26020466] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 01/13/2021] [Accepted: 01/14/2021] [Indexed: 12/24/2022] Open
Abstract
User-friendly, low-cost equipment for preventive screening of severe or deadly pathologies are one of the most sought devices by the National Health Services, as they allow early disease detection and treatment, often avoiding its degeneration. In recent years more and more research groups are developing devices aimed at these goals employing gas sensors. Here, nanostructured chemoresistive metal oxide (MOX) sensors were employed in a patented prototype aimed to detect volatile organic compounds (VOCs), exhaled by blood samples collected from patients affected by colorectal cancer and from healthy subjects as a control. Four sensors, carefully selected after many years of laboratory tests on biological samples (cultured cells, human stools, human biopsies, etc.), were based here on various percentages of tin, tungsten, titanium, niobium, tantalum and vanadium oxides. Sensor voltage responses were statistically analyzed also with the receiver operating characteristic (ROC) curves, that allowed the identification of the cut-off discriminating between healthy and tumor affected subjects for each sensor, leading to an estimate of sensitivity and specificity parameters. ROC analysis demonstrated that sensors employing tin and titanium oxides decorated with gold nanoparticles gave sensitivities up to 80% yet with a specificity of 70%.
Collapse
Affiliation(s)
- Michele Astolfi
- Department of Physics and Earth Sciences, University of Ferrara, 44122 Ferrara, Italy; (M.A.); (G.Z.)
- SCENT S.r.l (SME company), Via Quadrifoglio 11, 44124 Ferrara, Italy
| | - Giorgio Rispoli
- Department of Neuroscience and Rehabilitation, University of Ferrara, 44121 Ferrara, Italy;
| | - Gabriele Anania
- Department of Medical Sciences, University of Ferrara, 44121 Ferrara, Italy; (G.A.); (E.A.); (V.N.)
| | - Elena Artioli
- Department of Medical Sciences, University of Ferrara, 44121 Ferrara, Italy; (G.A.); (E.A.); (V.N.)
| | - Veronica Nevoso
- Department of Medical Sciences, University of Ferrara, 44121 Ferrara, Italy; (G.A.); (E.A.); (V.N.)
| | - Giulia Zonta
- Department of Physics and Earth Sciences, University of Ferrara, 44122 Ferrara, Italy; (M.A.); (G.Z.)
- SCENT S.r.l (SME company), Via Quadrifoglio 11, 44124 Ferrara, Italy
| | - Cesare Malagù
- Department of Physics and Earth Sciences, University of Ferrara, 44122 Ferrara, Italy; (M.A.); (G.Z.)
- SCENT S.r.l (SME company), Via Quadrifoglio 11, 44124 Ferrara, Italy
- Correspondence:
| |
Collapse
|
18
|
Liu B, Wang B, Yan Y, Tang K, Ding CF. Efficient separation of phosphopeptides employing a Ti/Nb-functionalized core-shell structure solid-phase extraction nanosphere. Mikrochim Acta 2021; 188:32. [PMID: 33415462 DOI: 10.1007/s00604-020-04652-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Accepted: 11/17/2020] [Indexed: 01/04/2023]
Abstract
A strategy for effectively enriching global phosphopeptides was successfully developed by using ammonia methyl phosphate (APA) as a novel chelating ligand and Ti4+ and Nb5+ as double functional ions (referred to as Fe3O4@mSiO2@APA@Ti4+/Nb5+). With the advantage of large specific surface area (151.1 m2/g), preeminent immobilized ability for metal ions (about 8% of total atoms), and unbiased enrichment towards phosphopeptides, Fe3O4@mSiO2@APA@Ti4+/Nb5+ displays high selectivity (maximum mass ratio β-casein to BSA is 1:1500), low limit of detection (LOD, as low as 0.05 fmol), good relative standard deviation (RSD, lower than 7%), recovery rate of 87% (18O isotope labeling method), outstanding phosphopeptide loading capacity (330 μg/mg), and at least five times re-use abilities. In the examination of the actual sample, 24 phosphopeptides were successfully detected in saliva and 4 phosphopeptides were also selectively extracted from human serum. All experiments have shown that Fe3O4@mSiO2@APA@Ti4+/Nb5+ exhibits exciting potential in view of the challenge of low abundance of phosphopeptides. Graphical abstract.
Collapse
Affiliation(s)
- Bin Liu
- Zhejiang Provincial Key Laboratory of Advanced Mass Spectrometry and Molecular Analysis, Institute of Mass Spectrometry, School of Material Science and Chemical Engineering, Ningbo University, Ningbo, 315211, Zhejiang, China
| | - Baichun Wang
- Zhejiang Provincial Key Laboratory of Advanced Mass Spectrometry and Molecular Analysis, Institute of Mass Spectrometry, School of Material Science and Chemical Engineering, Ningbo University, Ningbo, 315211, Zhejiang, China
| | - Yinghua Yan
- Zhejiang Provincial Key Laboratory of Advanced Mass Spectrometry and Molecular Analysis, Institute of Mass Spectrometry, School of Material Science and Chemical Engineering, Ningbo University, Ningbo, 315211, Zhejiang, China.
| | - Keqi Tang
- Zhejiang Provincial Key Laboratory of Advanced Mass Spectrometry and Molecular Analysis, Institute of Mass Spectrometry, School of Material Science and Chemical Engineering, Ningbo University, Ningbo, 315211, Zhejiang, China
| | - Chuan-Fan Ding
- Zhejiang Provincial Key Laboratory of Advanced Mass Spectrometry and Molecular Analysis, Institute of Mass Spectrometry, School of Material Science and Chemical Engineering, Ningbo University, Ningbo, 315211, Zhejiang, China
| |
Collapse
|
19
|
Abstract
The experimental data collected over the past 15 years on the interaction of decavanadate(V) (V10O286-; V10), a polyoxometalate (POM) with promising anticancer and antibacterial action, with G-actin, were rationalized by using several computational approaches (docking, density functional theory (DFT), and molecular dynamics (MD)). Moreover, a comparison with the isostructural and more stable decaniobate(V) (Nb10O286-; Nb10) was carried out. Four binding sites were identified, named α, β, γ, and δ, the site α being the catalytic nucleotide site located in the cleft of the enzyme at the interface of the subdomains II and IV. It was observed that the site α is preferred by V10, whereas Nb10 is more stable at the site β; this indicates that, differently from other proteins, G-actin could contemporaneously bind the two POMs, whose action would be synergistic. Both decavanadate and decaniobate induce conformational rearrangements in G-actin, larger for V10 than Nb10. Moreover, the binding mode of oxidovanadium(IV) ion, VIVO2+, formed upon the reduction of decavanadate(V) by the -SH groups of accessible cysteine residues, is also found in the catalytic site α with (His161, Asp154) coordination; this adduct overlaps significantly with the region where ATP is bound, accounting for the competition between V10 and its reduction product VIVO2+ with ATP, as previously observed by EPR spectroscopy. Finally, the competition with ATP was rationalized: since decavanadate prefers the nucleotide site α, Ca2+-ATP displaces V10 from this site, while the competition is less important for Nb10 because this POM shows a higher affinity for β than for site α. A relevant consequence of this paper is that other metallodrug-protein systems, in the absence or presence of eventual inhibitors and/or competition with molecules of the organism, could be studied with the same approach, suggesting important elements for an explanation of the biological data and a rational drug design.
Collapse
Affiliation(s)
- Giuseppe Sciortino
- Dipartimento
di Chimica e Farmacia, Università
di Sassari, Via Vienna 2, I-07100 Sassari, Italy
- Institute
of Chemical Research of Catalonia (ICIQ), Avgda. Països Catalans, 16, 43007 Tarragona, Spain
- (G.S.) Phone +34 977 920229. Email
| | - Manuel Aureliano
- CCMar,
FCT, Faculdade de Ciências e Tecnologia, Universidade do Algarve, 8000-139 Faro, Portugal
- (M.A.) Phone +351 289 800977. Email
| | - Eugenio Garribba
- Dipartimento
di Chimica e Farmacia, Università
di Sassari, Via Vienna 2, I-07100 Sassari, Italy
- (E.G.) Phone +39 079 229487. Email
| |
Collapse
|
20
|
Bhembe YA, Lukhele LP, Hlekelele L, Ray SS, Sharma A, Vo DVN, Dlamini LN. Photocatalytic degradation of nevirapine with a heterostructure of few-layer black phosphorus coupled with niobium (V) oxide nanoflowers (FL-BP@Nb 2O 5). Chemosphere 2020; 261:128159. [PMID: 33113664 DOI: 10.1016/j.chemosphere.2020.128159] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 08/13/2020] [Accepted: 08/25/2020] [Indexed: 06/11/2023]
Abstract
The degradation and removal of antiviral drugs in water has emerged remains a major challenge. This work presents, the photodegradation of nevirapine (NVP) with a novel p-n heterostructure of FL-BP@Nb2O5 nanoparticles synthesized via hydrothermal method. Several characterization techniques revealed a successful formation of the heterostructure with well aligned band positions that promoted excellent separation of charge carriers. A systematic study was conducted on the effect of initial pH, initial catalyst loading and initial concentration on the degradation kinetics of NVP. Degradation efficiency of 68% was achieved with the FL-BP@Nb2O5 after 3 h with 5 ppm initial concentration solution of NVP, at a working pH of 3 and 15 mg of photocatalyst. The stable fragment resulting from the degradation of NVP was n-butanol as evidenced by LC/MS. The successful degradation of NVP transpired with synergistic effect exhibited by the heterostructure that led to accelerated formation of reactive species that were responsible for the breaking down of NVP into smaller fragments. A TOC removal percentage of 19.03% after the photodegradation of NVP was observed, suggesting a successful break down of NVP to simpler non-toxic carbon-containing compounds.
Collapse
Affiliation(s)
- Yoliswa Anittah Bhembe
- Department of Chemical Sciences, University of Johannesburg, Doornfontein Campus, Johannesburg, South Africa
| | | | - Lerato Hlekelele
- Centre for Nanostructures and Advanced Materials, DSI-CSIR Nanotechnology Innovation Centre, Council for Scientific and Industrial Research, Pretoria, South Africa
| | - Suprakas Sinha Ray
- Department of Chemical Sciences, University of Johannesburg, Doornfontein Campus, Johannesburg, South Africa; Centre for Nanostructures and Advanced Materials, DSI-CSIR Nanotechnology Innovation Centre, Council for Scientific and Industrial Research, Pretoria, South Africa
| | - Ajit Sharma
- Department of Chemical Engineering and Physical Sciences, Lovely Professional University, Phagwara, 144411, India
| | - Dai-Viet N Vo
- Center of Excellence for Green Energy and Environmental Nanomaterials (CE@GrEEN), Nguyen Tat Thanh University, Ho Chi Minh City, 755414, Viet Nam
| | | |
Collapse
|
21
|
Khan SU, Perini JAL, Hussain S, Khan H, Khan S, Boldrin Zanoni MV. Electrochemical preparation of Nb 2O 5 nanochannel photoelectrodes for enhanced photoelectrocatalytic performance in removal of RR120 dye. Chemosphere 2020; 257:127164. [PMID: 32480087 DOI: 10.1016/j.chemosphere.2020.127164] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 05/19/2020] [Accepted: 05/20/2020] [Indexed: 06/11/2023]
Abstract
The present work describes the synthesis of niobium oxide nanochannels (Nb2O5NCs) with high surface area, porosity, photocurrent density, and photoelectrochemical stability as photocatalyst. The Nb2O5NCs were prepared by electrochemical anodization of niobium foil in different electrolytes: 1 M H2SO4 containing 0.4 wt% HF (S1); glycerol containing 0.4 M NH4F (S2); 0.25 g NH4F with 4 vol% water in glycol at 50 °C (S3); and glycerol containing 10 wt% K2HPO4, at 130 °C (S4, annealed in air; S5, annealed in N2). All the Nb2O5NCs showed well-organized arrays of nanochannels grown on the Nb foil, with tube diameters in the order S4<S2<S1<S3 and film thicknesses in the order S1<S2<S3<S4, as determined using FEG-SEM analyses. The samples were also characterized using XRD, EDX, DRS, XPS, EIS, Mott-Schottky analysis, and LSV curves. But, best results were obtained only when phosphorus (about 1% doping) was incorporated into the electrodes samples prepared in glycerol containing 10 wt% K2HPO4 at 130 °C (i.e. S4 and S5). This procedure enhances the absorption intensity in the UV-Vis regions, the conductivity, the charge carrier density, and the photocurrent density. The Nb2O5NC sample S5 was tested for the degradation of Procion Red HE-3B (RR120) dye, as a model pollutant, achieving efficient photoelectrodegradation with nearly 2 times higher mineralization efficiency compared to photolysis (PT) and photocatalysis (PC). Thus, the results indicate that the modification of Nb2O5NC thin film photoelectrodes by phosphorous doping can be a powerful and efficient alternative to usual approaches applied to the treatment of complex reactive dyes.
Collapse
Affiliation(s)
- Saad Ullah Khan
- São Paulo State University (UNESP), Institute of Chemistry, Araraquara, SP, Brazil; National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM), São Paulo State University (UNESP), Institute of Chemistry, Araraquara, SP, Brazil; Faculty of Materials and Chemical Engineering, GIK Institute of Engineering Sciences and Technology, Topi, Pakistan
| | - João Angelo Lima Perini
- São Paulo State University (UNESP), Institute of Chemistry, Araraquara, SP, Brazil; National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM), São Paulo State University (UNESP), Institute of Chemistry, Araraquara, SP, Brazil.
| | - Sajjad Hussain
- Faculty of Materials and Chemical Engineering, GIK Institute of Engineering Sciences and Technology, Topi, Pakistan
| | - Hammad Khan
- Faculty of Materials and Chemical Engineering, GIK Institute of Engineering Sciences and Technology, Topi, Pakistan
| | - Sabir Khan
- São Paulo State University (UNESP), Institute of Chemistry, Araraquara, SP, Brazil; National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM), São Paulo State University (UNESP), Institute of Chemistry, Araraquara, SP, Brazil; Laboratory of Physical Chemistry Research, Faculty of Sciences, National University of Engineering, Lima, Peru
| | - Maria V Boldrin Zanoni
- São Paulo State University (UNESP), Institute of Chemistry, Araraquara, SP, Brazil; National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM), São Paulo State University (UNESP), Institute of Chemistry, Araraquara, SP, Brazil.
| |
Collapse
|
22
|
Padrón-Navarta JA, Barou F, Daneu N. Twinning in SnO 2-based ceramics doped with CoO- and Nb 2O 5: morphology of multiple twins revealed by electron backscatter diffraction. Acta Crystallogr B Struct Sci Cryst Eng Mater 2020; 76:875-883. [PMID: 33017320 PMCID: PMC7535064 DOI: 10.1107/s2052520620010264] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 07/23/2020] [Indexed: 06/11/2023]
Abstract
Electron backscatter diffraction (EBSD) was used for the analysis of multiple cyclic twins in cassiterite (SnO2), which form during sintering of SnO2 with small additions of CoO and Nb2O5. Grain misorientation analysis has shown that about one third of all grains contain {101} twin boundaries (TBs). The majority of these grains are contact twins, whereas a small fraction of grains are multiple, mainly cyclic twins. A procedure was developed in MTEX [Bachmann, Hielscher & Schaeben (2010). Solid State Phenom. 160, 63-88] for automated identification of crystallographically different types of cyclic twins and found two main types: coplanar twins composed of three or four domains with a common [010] axis and alternating twins composed of three to seven domains oriented along the [111] axis. Both types of cyclic twins have a characteristic common origin (nucleus) of all TBs, which is positioned eccentric relative to the grain section and the cycle is closed with a shorter non-crystallographic contact between the first and the last twin domain. The morphology of cyclic twins suggests that they form by nucleation in the initial stages of grain growth. The average size of twinned grains increases with the number of twin domains indicating the influence of TBs formation on the growth of composite grains.
Collapse
Affiliation(s)
| | - Fabrice Barou
- Géosciences Montpellier, Univ. Montpellier, CNRS and Univ. des Antilles, Montpellier, France
| | - Nina Daneu
- Department for Advanced Materials, Jožef Stefan Institute, Jamova cesta 39, Ljubljana, 1000, Slovenia
| |
Collapse
|
23
|
Lyubutin I, Starchikov S, Troyan I, Nikiforova Y, Lyubutina M, Gavriliuk A. Pressure Induced Spin Crossover and Magnetic Properties of Multiferroic Ba 3NbFe 3Si 2O 14. Molecules 2020; 25:molecules25173808. [PMID: 32825707 PMCID: PMC7504703 DOI: 10.3390/molecules25173808] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 08/15/2020] [Accepted: 08/19/2020] [Indexed: 12/03/2022] Open
Abstract
Recently, the iron containing langasite-type crystal Ba3NbFe3Si2O14 has attracted great attention as a new magnetically induced multiferroic. In this work, magnetic, structural and electronic properties of the multiferroic Ba3NbFe3Si2O14 were investigated by several methods, including synchrotron X-ray diffraction, Raman spectroscopy and synchrotron Mössbauer source technique at high quasi-hydrostatic pressures (up to 70 GPa), created in diamond anvil cells. At room temperature, two structural transitions at pressures of about 3.0 and 17.5 GPa were detected. Mössbauer studies at high pressures revealed a radical change in the magnetic properties during structural transitions. At pressures above 18 GPa, the crystal transforms into two magnetic fractions, and in one of them the Néel temperature (TN) increases by about four times compared with the TN value in the initial phase (from 27 to 115 K). At pressures above 50 GPa, a spin crossover occurs when the fraction of iron Fe3+ ions in oxygen octahedra transits from the high-spin (HS, S = 5/2) to the low-spin (LS, S = 1/2) state. This leads to a new change in the magnetic properties. The magnetic ordering temperature of the LS sublattice was found to be of about 22(1) K, and magnetic correlations between HS and LS sublattices were studied.
Collapse
Affiliation(s)
- Igor Lyubutin
- Shubnikov Institute of Crystallography of FSRC “Crystallography and Photonics” of Russian Academy of Sciences, 119333 Moscow, Russia; (I.L.); (I.T.); (Y.N.); (M.L.); (A.G.)
| | - Sergey Starchikov
- Shubnikov Institute of Crystallography of FSRC “Crystallography and Photonics” of Russian Academy of Sciences, 119333 Moscow, Russia; (I.L.); (I.T.); (Y.N.); (M.L.); (A.G.)
- Correspondence: ; Tel.: +7-499-330-8329
| | - Ivan Troyan
- Shubnikov Institute of Crystallography of FSRC “Crystallography and Photonics” of Russian Academy of Sciences, 119333 Moscow, Russia; (I.L.); (I.T.); (Y.N.); (M.L.); (A.G.)
| | - Yulia Nikiforova
- Shubnikov Institute of Crystallography of FSRC “Crystallography and Photonics” of Russian Academy of Sciences, 119333 Moscow, Russia; (I.L.); (I.T.); (Y.N.); (M.L.); (A.G.)
| | - Marianna Lyubutina
- Shubnikov Institute of Crystallography of FSRC “Crystallography and Photonics” of Russian Academy of Sciences, 119333 Moscow, Russia; (I.L.); (I.T.); (Y.N.); (M.L.); (A.G.)
| | - Alexander Gavriliuk
- Shubnikov Institute of Crystallography of FSRC “Crystallography and Photonics” of Russian Academy of Sciences, 119333 Moscow, Russia; (I.L.); (I.T.); (Y.N.); (M.L.); (A.G.)
- Institute for Nuclear Research, Russian Academy of Sciences, Troitsk, 142190 Moscow, Russia
| |
Collapse
|
24
|
Zhang J, Zhu Z, Jiang J, Li H. Synthesis of Novel Ternary Dual Z-scheme AgBr/LaNiO 3/g-C 3N 4 Composite with Boosted Visible-Light Photodegradation of Norfloxacin. Molecules 2020; 25:molecules25163706. [PMID: 32823894 PMCID: PMC7464504 DOI: 10.3390/molecules25163706] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 08/11/2020] [Accepted: 08/13/2020] [Indexed: 12/03/2022] Open
Abstract
Promoting the separation of photogenerated charges and enhanced optical absorption capacity is the main means to modify photocatalytic capacities to advance semiconductor photocatalyst applications. For the first time, a novel ternary photocatalyst for dual Z-scheme system AgBr/LaNiO3/g-C3N4 (ALG) was prepared via a modest ultrasound-assisted hydrothermal method. The results indicated that LaNiO3 nanoballs and AgBr nanoparticles were successfully grown on the surface of g-C3N4 nanosheets. A dual Z-scheme photocatalytic reaction system could be constructed based on the energy band matching within AgBr, LaNiO3 and g-C3N4. Metallic Ag during the photocatalytic reaction process acted as the active electrons transfer center to enhance the photocatalytic charge pairs separation. The chemical composition of ALG was optimized and composites with 3% AgBr, 30% LaNiO3 and 100% g-C3N4 which was noted as 3-ALG displayed the best photocatalytic performance. A total of 92% of norfloxacin (NOR) was photodegraded within two hours over ALG and the photodegradation rate remained >90% after six cycles. The main active species during the degradation course were photogenerated holes, superoxide radical anion and hydroxyl radical. A possible mechanism was proposed based on the synergetic effects within AgBr, LaNiO3 and g-C3N4. This work would offer a credible theoretical basis for the application of dual Z-scheme photocatalysts in environment restoration.
Collapse
Affiliation(s)
- Junjiao Zhang
- School of Geography, Liaoning Normal University, Dalian 116029, China; (J.Z.); (Z.Z.)
| | - Zhengru Zhu
- School of Geography, Liaoning Normal University, Dalian 116029, China; (J.Z.); (Z.Z.)
| | - Junchao Jiang
- School of Geography, Liaoning Normal University, Dalian 116029, China; (J.Z.); (Z.Z.)
- Correspondence: ; Tel.: +86-411-8215-8364
| | - Hong Li
- Department of Basic, Dalian Naval Academy, Dalian 116018, China;
| |
Collapse
|
25
|
Kiyochi Junior HDJ, Candido AG, Bonadio TGM, da Cruz JA, Baesso ML, Weinand WR, Hernandes L. In vivo evaluation of interactions between biphasic calcium phosphate (BCP)-niobium pentoxide (Nb 2O 5) nanocomposite and tissues using a rat critical-size calvarial defect model. J Mater Sci Mater Med 2020; 31:71. [PMID: 32712717 DOI: 10.1007/s10856-020-06414-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 07/15/2020] [Indexed: 06/11/2023]
Abstract
Natural or synthetic biomaterials are increasingly being used to support bone tissue repair or substitution. The combination of natural calcium phosphates with biocompatible alloys is an important route towards the development of new biomaterials with bioperformance and mechanical responses to mimic those of human bones. This article evaluated the structural, physical, mechanical and biological properties of a new mechanical improved nanocomposite elaborated by association of fish biphasic calcium phosphate (BCP) and niobium pentoxide (Nb2O5). The nanocomposite (Nb-BCP) and the pure BCP, used as a positive control, were obtained by powder metallurgy. The density, porosity and microhardness were measured. The structural analysis was determined by X-ray diffraction (XRD) and the biological properties were studied in histological sections of critical size calvaria defects in rats, 7, 15, 30, 45 and 60 days after implantation of disks of both materials. Morphological description was made after scanning electron microscopy (SEM) and optical microscopy analysis. After sintering, the Nb-BCP nanocomposite presented four crystalline phases: 34.36% calcium niobate (CaNb2O6), 21.68% phosphorus niobium oxide (PNb9O25), 42.55% β-tricalcium phosphate (Ca3(PO4)2) and 1.31% of niobium pentoxide (Nb2O5) and exhibited increases of 17% in density, 66% in Vickers microhardness and 180% in compressive strength compared to pure BCP. In vivo study, showed biocompatibility, bioactivity and osteoconductivity similar to pure BCP. SEM showed the formation of globular accretions over the implanted nanocomposites, representing one of the stages of bone mineralization. In conclusion, the BCP and Nb2O5 formed a nanocomposite exhibiting characteristics that are desirable for a biomaterial, such as bioperformance, higher β-TCP percentage and improved physical and mechanical properties compared to pure BCP. These characteristics demonstrate the promise of this material for supporting bone regeneration.
Collapse
Affiliation(s)
| | - Aline Gabriela Candido
- Morphologycal Sciences Department, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | | | - José Adauto da Cruz
- Physics Department, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | | | | | - Luzmarina Hernandes
- Morphologycal Sciences Department, Universidade Estadual de Maringá, Maringá, Paraná, Brazil.
| |
Collapse
|
26
|
Zhao J, Guo X, He Q, Song Q, Wu F, Zhang C. Solvothermal synthesis of InNbO 4 cubes for efficient degradation of pefloxacin. Spectrochim Acta A Mol Biomol Spectrosc 2020; 234:118247. [PMID: 32179465 DOI: 10.1016/j.saa.2020.118247] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 02/20/2020] [Accepted: 03/08/2020] [Indexed: 06/10/2023]
Abstract
A novel solvothermal process for synthesizing InNbO4 nanomaterials was developed. In this manner, a series of InNbO4 samples was synthesized. It was shown that reaction temperature and precursor pH had strong influence on the attributes of InNbO4 samples. The X-ray diffraction patterns revealed that all the samples possessed monoclinic structure and the optimal reaction condition was found at 250 °C with a pH of 5. Scanning electron microscopy images of different InNbO4 samples showed various morphologies. Transmission electron microscopy verified the synthesized InNbO4-pH 5 was single-crystal cubes. X-ray photoelectron spectra verified the existence of In, Nb, and O in InNbO4-pH 5 sample. The band gap of InNbO4-pH 5 was calculated to be 2.51 eV. The photocurrent intensity of InNbO4-pH 5 was the highest among the prepared samples. The photocatalytic degradation of pefloxacin was investigated using these samples. The InNbO4-pH 5 exhibited best degradation efficiency among these samples. The removal efficiency of pefloxacin with InNbO4-pH 5 could reach 80.2% in 60 min. Based on free radical capture results, superoxide radicals and holes showed to be the dominant active species. In addition, UHPLC/MS/MS was used to identify the degradation intermediates. Five new pefloxacin degradation products were found and possible degradation pathways were suggested.
Collapse
Affiliation(s)
- Jie Zhao
- Department of Applied Chemistry, Xi'an University of Technology, 5 Jinhua South Road, Xi'an, Shaanxi 710048, PR China.
| | - Xiao Guo
- Department of Applied Chemistry, Xi'an University of Technology, 5 Jinhua South Road, Xi'an, Shaanxi 710048, PR China.
| | - Qiang He
- Technical Center, Xi'an Customs District, Shaanxi 710068, PR China.
| | - Qiang Song
- Department of Applied Chemistry, Xi'an University of Technology, 5 Jinhua South Road, Xi'an, Shaanxi 710048, PR China.
| | - Fei Wu
- Department of Applied Chemistry, Xi'an University of Technology, 5 Jinhua South Road, Xi'an, Shaanxi 710048, PR China.
| | - Chenhui Zhang
- Department of Applied Chemistry, Xi'an University of Technology, 5 Jinhua South Road, Xi'an, Shaanxi 710048, PR China.
| |
Collapse
|
27
|
Guerra C, Sancy M, Walczak M, Martínez C, Ringuedé A, Cassir M, Han J, Ogle K, de Melo HG, Salinas V, Aguilar C. Effect of added porosity on a novel porous Ti-Nb-Ta-Fe-Mn alloy exposed to simulated body fluid. Materials Science and Engineering: C 2020; 111:110758. [PMID: 32279776 DOI: 10.1016/j.msec.2020.110758] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 01/06/2020] [Accepted: 02/16/2020] [Indexed: 11/18/2022]
Affiliation(s)
- Carolina Guerra
- Departamento de Ingeniería Mecánica y Metalúrgica, Escuela de Ingeniería, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Macul, Santiago, Chile.
| | - Mamié Sancy
- Departamento de Ingeniería Mecánica y Metalúrgica, Escuela de Ingeniería, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Macul, Santiago, Chile; Escuela de Construcción Civil, Facultad de Ingeniería, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Macul, Santiago, Chile; Centro de Investigación en Nanotecnología y Materiales Avanzados "CIEN-UC", Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Macul, Santiago, Chile.
| | - Magdalena Walczak
- Departamento de Ingeniería Mecánica y Metalúrgica, Escuela de Ingeniería, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Macul, Santiago, Chile; Centro de Investigación en Nanotecnología y Materiales Avanzados "CIEN-UC", Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Macul, Santiago, Chile
| | - Carola Martínez
- Escuela de Construcción Civil, Facultad de Ingeniería, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Macul, Santiago, Chile; Departamento de Ingeniería Metalúrgica y de Materiales, Universidad Técnica Federico Santa María, Av. España 1680, Valparaíso, Chile
| | - Armelle Ringuedé
- Chimie ParisTech, PSL University, CNRS, Institut de Recherche de Cheimie de Paris, 75005 Paris, France
| | - Michel Cassir
- Chimie ParisTech, PSL University, CNRS, Institut de Recherche de Cheimie de Paris, 75005 Paris, France
| | - Junsoo Han
- Chimie ParisTech, PSL University, CNRS, Institut de Recherche de Cheimie de Paris, 75005 Paris, France
| | - Kevin Ogle
- Chimie ParisTech, PSL University, CNRS, Institut de Recherche de Cheimie de Paris, 75005 Paris, France
| | - Hercílio Gomes de Melo
- Departamento de Eng. Metalúrgica e de Materiais, Escola Politécnica da Universidade de São Paulo, Av. Prof. Mello Moraes, 2463, São Paulo, Brazil
| | - Vicente Salinas
- Instituto de Ciencias Químicas Aplicadas (ICQA), Facultad de Ingeniería, Universidad Autónoma de Chile, Av. Pedro de Valdivia 425, Santiago, Chile
| | - Claudio Aguilar
- Departamento de Ingeniería Metalúrgica y de Materiales, Universidad Técnica Federico Santa María, Av. España 1680, Valparaíso, Chile
| |
Collapse
|
28
|
Welter JB, da Silva SW, Schneider DE, Rodrigues MAS, Ferreira JZ. Performance of Nb/BDD material for the electrochemical advanced oxidation of prednisone in different water matrix. Chemosphere 2020; 248:126062. [PMID: 32032880 DOI: 10.1016/j.chemosphere.2020.126062] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 01/21/2020] [Accepted: 01/28/2020] [Indexed: 06/10/2023]
Abstract
Glucocorticoids are widely used to treat a variety of diseases. Consequently, these compounds have been found in water and wastewater matrix. Despite studies have proven its toxicity, just a few works investigate techniques to degrade and mineralize them. To solve this issue, this work presents the degradation and mineralization of prednisone (PRED) by electrochemical advanced oxidation (EAO) using a boron-doped diamond supported on niobium (Nb/BDD) anode in synthetic and real wastewater. Cyclic voltammetry (CV) was performed to investigate the PRED oxidation mechanisms. CV suggest that PRED will be oxidized via HO• and other oxidants generated from the ions present in the liquid matrix (S2O82-, SO4•-, HClO, ClO- etc.). Different EAO conditions as initial pH (3, 7 and 11) and applied current densities (5, 10 and 20 mA cm-2) were evaluated. The best result was obtained at alkaline pH (11) and a current density of 20 mA cm-2, achieving 78% of degradation and 42% of mineralization. Using the best conditions, the EAO was applied as a polishing treatment stage to remove PRED from a biological pre-treated municipal wastewater spiked with PRED. The results indicate that EAO applied in the real matrix provides better results than the synthetic solution, probably associated with the presence of ions that can be electrochemically converted into oxidant species, resulting in higher kinetic constant, mineralization current efficiency and lower energetic consumption. Therefore, the EAO process without the addition of chemicals has proven to be an effective alternative as a tertiary treatment of municipal wastewater contaminated with PRED.
Collapse
Affiliation(s)
- Júlia Bitencourt Welter
- Universidade Federal do Rio Grande do Sul (UFRGS), Programa de Pós-Graduação em Engenharia de Minas, Metalúrgica e de Materiais (PPGE3M), Av. Bento Gonçalves, 9500, Porto Alegre, RS, Brazil
| | - Salatiel Wohlmuth da Silva
- UFRGS - Instituto de Pesquisas Hidráulicas (IPH), Programa de Pós-Graduação em Recursos Hídricos e Saneamento Ambiental, Av. Bento Gonçalves, 9500, Porto Alegre, RS, Brazil.
| | - Daniela Eduarda Schneider
- Universidade Federal do Rio Grande do Sul (UFRGS), Programa de Pós-Graduação em Engenharia de Minas, Metalúrgica e de Materiais (PPGE3M), Av. Bento Gonçalves, 9500, Porto Alegre, RS, Brazil
| | | | - Jane Zoppas Ferreira
- Universidade Federal do Rio Grande do Sul (UFRGS), Programa de Pós-Graduação em Engenharia de Minas, Metalúrgica e de Materiais (PPGE3M), Av. Bento Gonçalves, 9500, Porto Alegre, RS, Brazil
| |
Collapse
|
29
|
Lin S, Lin H, Yang M, Ge M, Chen Y, Zhu Y. A two-dimensional MXene potentiates a therapeutic microneedle patch for photonic implantable medicine in the second NIR biowindow. Nanoscale 2020; 12:10265-10276. [PMID: 32356854 DOI: 10.1039/d0nr01444c] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Due to the refractory nature and recurrence of cancer, the related treatments are continuously updated and improved. Here, we designed a soluble polyvinylpyrrolidone (PVP) microneedle system loaded with a two-dimensional (2D) MXene (Nb2C nanosheets) for medical implantation and photothermal ablation of superficial tumors in the second near infrared biological window (NIR-II). In this system, 2D Nb2C nanosheets acted as high-performance photothermal nanoagents, and biocompatible PVP functioned as matrix material to maintain the structure of the needles. The microneedle system exhibited sufficient skin-penetration ability and distinctive dissolution behavior. After being inserted into the skin of the tumor site, it can be dissolved within a short period to release the loaded 2D Nb2C nanosheets. The temperature of the tumor site increased rapidly to almost 70 °C under the irradiation of a 1064 nm laser at a power density of 1 W cm-2, and this could provide sufficient conditions for photonic tumor ablation. After two weeks of treatment, the tumor growth was significantly suppressed, compared to that of the control group, and the survival rate of mice was clearly improved. In addition, the biocompatibility of the microneedle system was tested on mice, in which no significant toxicity or side effects were observed. Therefore, this kind of microneedle system with minimally invasive, safe and effective features is expected to be developed as an intriguing strategy for localized superficial cancer treatment.
Collapse
Affiliation(s)
- Shiyang Lin
- School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, P. R. China.
| | | | | | | | | | | |
Collapse
|
30
|
Bhembe YA, Dlamini LN. Photoreduction of chromium (VI) by a composite of niobium (V) oxide impregnated with a Ti-based MOF. J Environ Sci Health A Tox Hazard Subst Environ Eng 2020; 55:1003-1020. [PMID: 32400276 DOI: 10.1080/10934529.2020.1763706] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 04/23/2020] [Accepted: 04/25/2020] [Indexed: 06/11/2023]
Abstract
Herein, we report a novel composite material of Nb2O5@MIL-125 that exhibited enhanced photoreduction of hexavalent chromium. The composite material was fabricated through an impregnation approach, which comprised of a two-step hydrothermal synthesis. As-prepared Nb2O5 nanospheres exhibited very poor charge separation; MIL-125 (Ti) which is a Ti-based metal-organic framework was introduced into the lattice of the spheres to improve charge recombination rate. The synthesized material's phase, crystallinity, textural and morphological studies were investigated utilizing XRD, Raman, TEM, SEM, and EDS, respectively. While the optical and photoelectrochemical behavior of the samples were obtained from UV-vis-DRS, PL, and EIS data. This data combined, illustrated the successful formation of a functional and effective heterointerface between Nb2O5 and MIL-125 (Ti). Ti introduced as the MOF in the lattice of Nb2O5 had an essential synergetic effect as the composite bearing the highest mole ratio of Ti showed higher effective photoreduction of hexavalent chromium. This was further complemented the PL and XPS data which highlighted the Nb-MIL-125 (2-3) composite to have excellent charge separation and rapid photoreduction of chromium.
Collapse
Affiliation(s)
- Yoliswa A Bhembe
- Department of Chemical Sciences, University of Johannesburg, Johannesburg, South Africa
| | - Langelihle N Dlamini
- Department of Chemical Sciences, University of Johannesburg, Johannesburg, South Africa
| |
Collapse
|
31
|
Bonetti L, Altomare L, Bono N, Panno E, Campiglio CE, Draghi L, Candiani G, Farè S, Boccaccini AR, De Nardo L. Electrophoretic processing of chitosan based composite scaffolds with Nb-doped bioactive glass for bone tissue regeneration. J Mater Sci Mater Med 2020; 31:43. [PMID: 32358696 DOI: 10.1007/s10856-020-06378-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 04/05/2020] [Indexed: 06/11/2023]
Abstract
Bioactive glasses (BGs), due to their ability to influence osteogenic cell functions, have become attractive materials to improve loaded and unloaded bone regeneration. BG systems can be easily doped with several metallic ions (e.g., Ag, Sr, Cu, Nb) in order to confer antibacterial properties. In particular, Nb, when compared with other metal ions, has been reported to be less cytotoxic and possess the ability to enhance mineralization process in human osteoblast populations. In this study, we co-deposited, through one-pot electrophoretic deposition (EPD), chitosan (CS), gelatin (GE) and a modified BG containing Nb to obtain substrates with antibacterial activity for unloaded bone regeneration. Self-standing composite scaffolds, with a defined porosity (15-90 μm) and homogeneous dispersion of BGs were obtained. TGA analysis revealed a BG loading of about 10% in the obtained scaffolds. The apatite formation ability of the scaffolds was evaluated in vitro in simulated body fluid (SBF). SEM observations, XRD and FT-IR spectra showed a slow (21-28 days) yet effective nucleation of CaP species on BGs. In particular, FT-IR peak around 603 cm-1 and XRD peak at 2θ = 32°, denoted the formation of a mineral phase after SBF immersion. In vitro biological investigation revealed that the release of Nb from composite scaffolds had no cytotoxic effects. Interestingly, BG-doped Nb scaffolds displayed antibacterial properties, reducing S. lutea and E. coli growth of ≈60% and ≈50%, respectively. Altogether, the obtained results disclose the produced composite scaffolds as promising materials with inherent antibacterial activity for bone tissue engineering applications.
Collapse
Affiliation(s)
- Lorenzo Bonetti
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133, Milan, Italy
| | - Lina Altomare
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133, Milan, Italy.
- National Interuniversity Consortium of Materials Science and Technology (INSTM), 50121, Florence, Italy.
| | - Nina Bono
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133, Milan, Italy
| | - Eliana Panno
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133, Milan, Italy
| | - Chiara Emma Campiglio
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133, Milan, Italy
| | - Lorenza Draghi
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133, Milan, Italy
- National Interuniversity Consortium of Materials Science and Technology (INSTM), 50121, Florence, Italy
| | - Gabriele Candiani
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133, Milan, Italy
- National Interuniversity Consortium of Materials Science and Technology (INSTM), 50121, Florence, Italy
| | - Silvia Farè
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133, Milan, Italy
- National Interuniversity Consortium of Materials Science and Technology (INSTM), 50121, Florence, Italy
| | - Aldo R Boccaccini
- Institute of Biomaterials, University of Erlangen-Nuremberg, Cauerstrasse 6, 91058, Erlangen, Germany
| | - Luigi De Nardo
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133, Milan, Italy
- National Interuniversity Consortium of Materials Science and Technology (INSTM), 50121, Florence, Italy
| |
Collapse
|
32
|
Zareidoost A, Yousefpour M. A study on the mechanical properties and corrosion behavior of the new as-cast TZNT alloys for biomedical applications. Mater Sci Eng C Mater Biol Appl 2020; 110:110725. [PMID: 32204036 DOI: 10.1016/j.msec.2020.110725] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 01/10/2020] [Accepted: 02/03/2020] [Indexed: 11/19/2022]
Abstract
In this study, four different TZNT based alloys, (Ti55Zr25Nb10Ta10, (Ti55Zr25Nb10Ta10)99.5Fe0.5, (Ti55Zr25Nb10Ta10)98Sn2, and (Ti55Zr25Nb10Ta10)98.5Ag1.5, (at. %), designated TZNT, TZNT-Fe, TZNT-Sn, TZNT-Ag, respectively) are produced by non-consumable vacuum arc melting and suction casting. These alloys using the d-electron alloy design method and considering the criteria of [Mo]eq and (e/a) ratio for β-phase Ti alloys are designed. The microstructure, mechanical properties, and corrosion behavior of the alloys are investigated via optical microscopy, scanning electron microscopy, X-ray diffraction, nanoindentation, and electrochemical tests. The designed alloys exhibit dendritic morphology, however, the TZNT-Ag alloy indicates a more homogenous microstructure after suction casting. X-ray diffraction analyses reveal not only the beta phase in the TZNT, TZNT-Fe, and TZNT-Ag alloys, but also beta lean/beta rich separation in the TZNT-Sn alloy. In addition to the microstructural features, the new TZNT alloys show very high ductility upon cold compressive deformation, as well as the lowest Young's modulus (65.54±1.7 GPa, P<0.05) is achieved in TZNT-Ag alloy. Furthermore, the compressive yield stress to Young's modulus (Ycys/E) ratio of the designed alloys is in the range of 0.92-1.08%. In terms of corrosion behavior, Ag increases the corrosion resistance of the TZNT alloy in Ringer's solution. As a result, owing to the effect of Ag on the optimization of the mechanical properties and corrosion resistance of the TZNT alloy, the as-cast Ag-containing TZNT alloy can be developed to be a promising candidate for biomedical applications.
Collapse
Affiliation(s)
- Amir Zareidoost
- Faculty of Materials & Metallurgical Engineering, Semnan University, Semnan, Iran
| | - Mardali Yousefpour
- Faculty of Materials & Metallurgical Engineering, Semnan University, Semnan, Iran.
| |
Collapse
|
33
|
Asencios J, Moro R, Luyo C, Talledo A. High Sensitive Biosensors Based on the Coupling Between Surface Plasmon Polaritons on Titanium Nitride and a Planar Waveguide Mode. Sensors (Basel) 2020; 20:E1784. [PMID: 32210206 PMCID: PMC7146431 DOI: 10.3390/s20061784] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Revised: 03/20/2020] [Accepted: 03/20/2020] [Indexed: 02/04/2023]
Abstract
High sensitivity biosensors based on the coupling of surface plasmon polaritons on titanium nitride (TiN) and a planar waveguide mode were built; they were proved by sensing three different media: air, water and dried egg white; sensors described here could be useful for sensing materials with a refractive index between 1.0 and 1.6; in particular, materials of biological interest with a refractive index in the range 1.3-1.6, like those containing biotin and/or streptavidin. They were built by depositing Nb2O5/SiO2/TiN multilayer structures on the flat surface of D-shaped sapphire prisms by using the dc magnetron sputtering technique. Attenuated total reflection (ATR) experiments in the Kretschmann configuration were accomplished for the air/TiN/Prism and S/Nb2O5/SiO2/TiN/Prism structures, S being the sample or sensing medium. ATR spectra for plasmons at the TiN/air interface showed a broad absorption band for angles of incidence between 36 and 85°, with full width at half maximum (FWHM) of approximately 40°. For the S/Nb2O5/SiO2/TiN/Prism structures, ATR spectra showed a sharp reflectivity peak, within the broad plasmonic absorption band, which was associated with Fano resonances. The angular position and FWHM of the Fano resonances strongly depend on the refractive index of the sensing medium. ATR spectra were fitted by using the transfer-matrix method. Additionally, we found that angular sensitivity and figure of merit increase with increasing the refractive index of the sensing medium.
Collapse
Affiliation(s)
- Junior Asencios
- Facultad de Ciencias, Universidad Nacional de Ingeniería, Lima 15333, Peru; (J.A.); (C.L.)
| | - Ramiro Moro
- Tianjin International Center for Nano Particles and Nano Systems, Tianjin University, Tianjin 300072, China;
| | - Clemente Luyo
- Facultad de Ciencias, Universidad Nacional de Ingeniería, Lima 15333, Peru; (J.A.); (C.L.)
| | - Arturo Talledo
- Facultad de Ciencias, Universidad Nacional de Ingeniería, Lima 15333, Peru; (J.A.); (C.L.)
| |
Collapse
|
34
|
Song S, Gibson D, Ahmadzadeh S, Chu HO, Warden B, Overend R, Macfarlane F, Murray P, Marshall S, Aitkenhead M, Bienkowski D, Allison R. Low-cost hyper-spectral imaging system using a linear variable bandpass filter for agritech applications. Appl Opt 2020; 59:A167-A175. [PMID: 32225370 DOI: 10.1364/ao.378269] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 12/16/2019] [Indexed: 05/27/2023]
Abstract
Hyperspectral imaging for agricultural applications provides a solution for non-destructive, large-area crop monitoring. However, current products are bulky and expensive due to complicated optics and electronics. A linear variable filter was developed for implementation into a prototype hyperspectral imaging camera that demonstrates good spectral performance between 450 and 900 nm. Equipped with a feature extraction and classification algorithm, the proposed system can be used to determine potato plant health with ∼88% accuracy. This algorithm was also capable of species identification and is demonstrated as being capable of differentiating between rocket, lettuce, and spinach. Results are promising for an entry-level, low-cost hyperspectral imaging solution for agriculture applications.
Collapse
|
35
|
Qadir M, Lin J, Biesiekierski A, Li Y, Wen C. Effect of Anodized TiO 2-Nb 2O 5-ZrO 2 Nanotubes with Different Nanoscale Dimensions on the Biocompatibility of a Ti35Zr28Nb Alloy. ACS Appl Mater Interfaces 2020; 12:6776-6787. [PMID: 31917541 DOI: 10.1021/acsami.9b21878] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Some important factors in the design of biomaterials are surface characteristics such as surface chemistry and topography, which significantly influence the relationship between the biomaterial and host cells. Therefore, nanotubular oxide layers have received substantial attention for biomedical applications due to their potential benefits in the improvement of the biocompatibility of the substrate. In this study, a nanotubular layer of titania-niobium pentoxide-zirconia (TiO2-Nb2O5-ZrO2) was developed via anodization on a β-type Ti35Zr28Nb alloy surface with enhanced biocompatibility. Scanning electron microscopy (SEM) and surface profilometry analysis of the anodized nanotubes indicated that the inner diameter (Di) and wall thicknesses (Wt) increased with an increase in the water content of electrolyte and the applied voltage during anodization, while the nanotube length (Ln) increased with increasing the anodization time. TiO2-Nb2O5-ZrO2 nanotubes with different Di, Wt, and Ln showed different surface roughnesses (Ra) and surface energies (γ), which affected the biocompatibility of the base alloy. MTS assay results showed that the TiO2-Nb2O5-ZrO2 nanotubes with the largest inner diameter (Di) of 75.9 nm exhibited the highest cell viability of 108.55% due to the high γ of the surface, which led to high adsorption of proteins on the top surface of the nanotubes. The second highest cell viability was observed on the nanotubular surface with Di of 33.3 nm, which is believed to result from its high γ as well as the optimum spacing between nanotubes. Ra did not appear to be clearly linked to cellular response; however, there may exist a threshold value of surface energy of ∼70 mJ/m2, below which the cell response is less sensitive and above which the cell viability increases with increasing γ. This indicates that the TiO2-Nb2O5-ZrO2 nanotubes provided a suitable environment for enhanced attachment and growth of osteoblast-like cells as compared to the bare Ti35Zr28Nb alloy surface.
Collapse
Affiliation(s)
- Muhammad Qadir
- School of Engineering , RMIT University , Melbourne , Victoria 3001 , Australia
| | - Jixing Lin
- Department of Material Engineering , Zhejiang Industry & Trade Vocational College , Wenzhou , Zhejiang 325003 , China
| | - Arne Biesiekierski
- School of Engineering , RMIT University , Melbourne , Victoria 3001 , Australia
| | - Yuncang Li
- School of Engineering , RMIT University , Melbourne , Victoria 3001 , Australia
| | - Cuie Wen
- School of Engineering , RMIT University , Melbourne , Victoria 3001 , Australia
| |
Collapse
|
36
|
Wu Z, Jiang H, Zhang L, Yi K, Cui H, Wang F, Liu W, Zhao X, Zhou F, Guo S. The acoustofluidic focusing and separation of rare tumor cells using transparent lithium niobate transducers. Lab Chip 2019; 19:3922-3930. [PMID: 31693035 DOI: 10.1039/c9lc00874h] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Research on circulating tumor cells (CTCs) is of great significance in cancer diagnosis, prognosis and even the development of personalized therapy. Here, we present a simple and transparent acoustofluidic device for CTC separation in a label-free and non-invasive manner, instead of traditional acoustic devices based on silicon substrates, which are not only expensive, but also not conducive to optical visualization. The device is based on cheaper glass fabrication and integrated with a 36°Y-rotated cut lithium niobate single crystal (36° LNO) coated indium tin oxide (ITO) acoustic actuator instead of piezoceramics. It could greatly reduce the generation of heat when the signal is excited by utilizing the thickness vibration mode of the 36° LNO single crystal material because of its super-linear performance. Moreover, pre-aligning the particles in the sample inlet in a two-dimensional (2D) mode served to improve the separation efficiency of the device. It was proved that the separation efficiency of polystyrene particles was 97.1 ± 1.0%. The average separation efficiency of cancer cell lines (MCF7 and HeLa) mixed with white bloods cells was about 91.5 ± 4.5%. Owing to the excellent light transmittance of this acoustofluidic device, it has great potential for application to related optical techniques for cell detection while simultaneously separating cells relying on an acoustic field.
Collapse
Affiliation(s)
- Zezheng Wu
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, P. R. China
| | - Hongqiang Jiang
- Department of Hematology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Lingling Zhang
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, P. R. China
| | - Kezhen Yi
- Department of Laboratory Medicine, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Heng Cui
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, P. R. China
| | - Fubing Wang
- Department of Laboratory Medicine, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Wei Liu
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, P. R. China
| | - Xingzhong Zhao
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, P. R. China
| | - Fuling Zhou
- Department of Hematology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Shishang Guo
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, P. R. China
| |
Collapse
|
37
|
Arenhart Heberle AN, García-Gabaldón M, Ortega EM, Bernardes AM, Pérez-Herranz V. Study of the atenolol degradation using a Nb/BDD electrode in a filter-press reactor. Chemosphere 2019; 236:124318. [PMID: 31319310 DOI: 10.1016/j.chemosphere.2019.07.049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 06/28/2019] [Accepted: 07/05/2019] [Indexed: 06/10/2023]
Abstract
The present paper deals with the atenolol (ATL) degradation by advanced anodic oxidation using a boron-doped diamond anode supported on niobium (Nb/BDD). Cyclic voltammetry performed on this electrode revealed that it presents a high quality (diamond-sp3/sp2-carbon ratio), high potential for OER and that ATL can be oxidized directly and/or indirectly by the electrogenerated oxidants, such as hydroxyl radicals, persulfate ions and sulfate radicals. Electrolysis experiments demonstrated that ATL degradation and mineralization follow a mixed (first and zero) order kinetics depending on the applied current density. At high applied current densities, the amount of OH radicals is very high and the overall reaction is limited by the transport of ATL (pseudo first-order kinetics) whereas for low applied current densities, the rate of OH radicals generation at the anode is slower than the rate of arrival of ATL molecules (pseudo-zero order kinetics). Estimated values of kzero and kfirst based on the assumption of pseudo-zero or pseudo-first order kinetics were carried oud as a function of the supporting electrolyte concentration, indicating that both parameters increased with its concentration due the higher production of sulfate reactive species that play an important role in degradation. Finally, MCE increased with the decrease of current density, due to the lower amount of OH present in solution, since this species could be rapidly wasted in parasitic reactions; and the increase of sulfate concentration due to the more efficient production of persulfate.
Collapse
Affiliation(s)
- Alan Nelson Arenhart Heberle
- Grupo IEC, Departamento de Ingeniería Química y Nuclear, E.T.S.I. Industriales, Universitat Politècnica de València, P.O. Box 22012, E-46071, Valencia, Spain; Universidade Federal do Rio Grande do Sul (UFRGS), Programa de Pós-Graduação em Engenharia de Minas, Metalúrgica e de Materiais (PPGE3M), Av. Bento Gonçalves, 9500, Porto Alegre, RS, Brazil
| | - Montserrat García-Gabaldón
- Grupo IEC, Departamento de Ingeniería Química y Nuclear, E.T.S.I. Industriales, Universitat Politècnica de València, P.O. Box 22012, E-46071, Valencia, Spain
| | - Emma María Ortega
- Grupo IEC, Departamento de Ingeniería Química y Nuclear, E.T.S.I. Industriales, Universitat Politècnica de València, P.O. Box 22012, E-46071, Valencia, Spain
| | - Andréa Moura Bernardes
- Universidade Federal do Rio Grande do Sul (UFRGS), Programa de Pós-Graduação em Engenharia de Minas, Metalúrgica e de Materiais (PPGE3M), Av. Bento Gonçalves, 9500, Porto Alegre, RS, Brazil
| | - Valentín Pérez-Herranz
- Grupo IEC, Departamento de Ingeniería Química y Nuclear, E.T.S.I. Industriales, Universitat Politècnica de València, P.O. Box 22012, E-46071, Valencia, Spain.
| |
Collapse
|
38
|
Zhang P, Chen C, Guo F, Philippe J, Gu Y, Tian Z, Bachman H, Ren L, Yang S, Zhong Z, Huang PH, Katsanis N, Chakrabarty K, Huang TJ. Contactless, programmable acoustofluidic manipulation of objects on water. Lab Chip 2019; 19:3397-3404. [PMID: 31508644 PMCID: PMC6934417 DOI: 10.1039/c9lc00465c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Contact-free manipulation of small objects (e.g., cells, tissues, and droplets) using acoustic waves eliminates physical contact with structures and undesired surface adsorption. Pioneering acoustic-based, contact-free manipulation techniques (e.g., acoustic levitation) enable programmable manipulation but are limited by evaporation, bulky transducers, and inefficient acoustic coupling in air. Herein, we report an acoustofluidic mechanism for the contactless manipulation of small objects on water. A hollow-square-shaped interdigital transducer (IDT) is fabricated on lithium niobate (LiNbO3), immersed in water and used as a sound source to generate acoustic waves and as a micropump to pump fluid in the ±x and ±y orthogonal directions. As a result, objects which float adjacent to the excited IDT can be pushed unidirectionally (horizontally) in ±x and ±y following the directed acoustic wave propagation. A fluidic processor was developed by patterning IDT units in a 6-by-6 array. We demonstrate contactless, programmable manipulation on water of oil droplets and zebrafish larvae. This acoustofluidic-based manipulation opens avenues for the contactless, programmable processing of materials and small biosamples.
Collapse
Affiliation(s)
- Peiran Zhang
- Department of Mechanical Engineering and Material Science, Duke University, NC 27708, USA.
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
39
|
Antonini LM, Menezes TL, Dos Santos AG, Takimi AS, Villarinho DJ, Dos Santos BP, Camassola M, Marcuzzo JS, de Fraga Malfatti C. Osteogenic differentiation of bone marrow-derived mesenchymal stem cells on anodized niobium surface. J Mater Sci Mater Med 2019; 30:104. [PMID: 31493056 DOI: 10.1007/s10856-019-6305-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 08/28/2019] [Indexed: 06/10/2023]
Abstract
Currently, titanium and its alloys are the most used materials for biomedical applications. However, because of the high costs of these metals, new materials, such as niobium, have been researched. Niobium appears as a promising material due to its biocompatibility, and excellent corrosion resistance. In this work, anodized niobium samples were produced and characterized. Their capacity to support the osteogenic differentiation of bone marrow-derived mesenchymal stem cells (BM-MSCs) was also tested. The anodized niobium samples were characterized by SEM, profilometry, XPS, and wettability. BM-MSCs were cultured on the samples during 14 days, and tested for cell adhesion, metabolic activity, alkaline phosphatase activity, and mineralization. Results demonstrated that anodization promotes the formation of a hydrophilic nanoporous oxide layer on the Nb surface, which can contribute to the increase in the metabolic activity, and in osteogenic differentiation of BM-MSCs, as well as to the extracellular matrix mineralization.
Collapse
Affiliation(s)
- Leonardo Marasca Antonini
- LAPEC/PPGE3M, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, Prédio 43427, Sala 232, Porto Alegre, RS, 91501-970, Brazil.
| | - Tiago Lemos Menezes
- LAPEC/PPGE3M, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, Prédio 43427, Sala 232, Porto Alegre, RS, 91501-970, Brazil
| | - Adilar Gonçalves Dos Santos
- LAPEC/PPGE3M, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, Prédio 43427, Sala 232, Porto Alegre, RS, 91501-970, Brazil
| | - Antonio Shigueaki Takimi
- ELETROCORR/PPGE3M, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, Prédio 43427, Sala 216, Porto Alegre, RS, 91501-970, Brazil
| | | | - Bruno Paiva Dos Santos
- Laboratory of Tissue Engineering - BioTis, Inserm U1026, University of Bordeaux, 146 Rue Léo Saignat, Bât. 4A, 2ème étage, Bordeaux, 33076, France
| | - Melissa Camassola
- Programa de Pós-graduação em Biologia Celular e Molecular Aplicada à Saúde (PPGBioSaúde), Universidade Luterana do Brasil, Laboratório de Células-Tronco e Engenharia de Tecidos, Av. Farroupilha, São José, Canoas, RS, 92425900, Brazil
| | - Jossano Saldanha Marcuzzo
- INPE, Instituto Nacional de Pesquisas Espaciais, Av. dos Astronautas, 1.758 - Jardim da Granja, São José dos Campos, SP, 12228-970, Brazil
| | - Célia de Fraga Malfatti
- LAPEC/PPGE3M, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, Prédio 43427, Sala 232, Porto Alegre, RS, 91501-970, Brazil
| |
Collapse
|
40
|
Yao X, Zhang J, Liang X, Long C. Niobium doping enhanced catalytic performance of Mn/MCM-41 for toluene degradation in the NTP-catalysis system. Chemosphere 2019; 230:479-487. [PMID: 31121511 DOI: 10.1016/j.chemosphere.2019.05.075] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 05/09/2019] [Accepted: 05/11/2019] [Indexed: 06/09/2023]
Abstract
The destruction of toluene in a dielectric barrier discharge (DBD) reactor with Nb-Mn/MCM-41 had been investigated and compared with X (X = Cu, Ce, Co)-Mn/MCM-41 catalysts. The XRD and TEM result confirms that the metal species were highly dispersed on the MCM-41. The results of XPS, O2-TPD and H2-TPR clearly demonstrate that Nb doping facilitated formation of lattice oxygen (Olatt) and the acid sites, which are all beneficial to catalytic degradation of toluene. Compared to X (Cu, Ce, Co)-Mn/MCM-41, Nb-Mn/MCM-41 had the most contents of Olatt, the most amounts of acid sites and the strongest acidity. Consequently, the catalytic performance tests identify that Nb-Mn/MCM-41 had the best catalytic performance, the highest removal efficiency and CO2 selectivity as well as carbon balance especially at low SIE. These results indicate that Nb was an important promoter improving the activity and CO2 selectivity of Mn/MCM-41 for the decomposition of toluene in NTP-catalysis system.
Collapse
Affiliation(s)
- Xiaohong Yao
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 163 Xianlin Avenue, Nanjing, 210023, China
| | - Jian Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 163 Xianlin Avenue, Nanjing, 210023, China
| | - Xiaoyang Liang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 163 Xianlin Avenue, Nanjing, 210023, China
| | - Chao Long
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 163 Xianlin Avenue, Nanjing, 210023, China; Nanjing University Yancheng Environmental Protection Technology and Engineering Research Institute, 888 Yingbin Road, Yancheng, 22400, China.
| |
Collapse
|
41
|
Cheng X, Liu S, Chen C, Chen W, Liu M, Li R, Zhang X, Zhou K. Microstructure and mechanical properties of additive manufactured porous Ti-33Nb-4Sn scaffolds for orthopaedic applications. J Mater Sci Mater Med 2019; 30:91. [PMID: 31388766 DOI: 10.1007/s10856-019-6292-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 07/17/2019] [Indexed: 06/10/2023]
Abstract
Customized porous titanium alloys have become the emerging materials for orthopaedic implant applications. In this work, diamond and rhombic dodecahedron porous Ti-33Nb-4Sn scaffolds were fabricated by selective laser melting (SLM). The phase, microstructure and defects characteristics were investigated systematically and correlated to the effects of pore structure, unit cell size and processing parameter on the mechanical properties of the scaffolds. Fine β phase dendrites were obtained in Ti-33Nb-4Sn scaffolds due to the fast solidification velocity in SLM process. The compressive and bending strength of the scaffolds decrease with the decrease of strut size and diamond structures showed both higher compressive and bending strength than the dodecahedron structures. Diamond Ti-33Nb-4Sn scaffold with compressive strength of 76 MPa, bending strength of 127 MPa and elastic modulus of 2.3 GPa was achieved by SLM, revealing the potential of Ti-33Nb-4Sn scaffolds for applications on orthopaedic implant.
Collapse
Affiliation(s)
- Xiaofan Cheng
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, China
| | - Shichao Liu
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, China
| | - Chao Chen
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, China.
| | - Wei Chen
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, China
| | - Min Liu
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, China
| | - Ruidi Li
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, China
| | - Xiaoyong Zhang
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, China.
| | - Kechao Zhou
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, China
| |
Collapse
|
42
|
Tan MHC, Baghi AD, Ghomashchi R, Xiao W, Oskouei RH. Effect of niobium content on the microstructure and Young's modulus of Ti-xNb-7Zr alloys for medical implants. J Mech Behav Biomed Mater 2019; 99:78-85. [PMID: 31344525 DOI: 10.1016/j.jmbbm.2019.07.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 05/16/2019] [Accepted: 07/18/2019] [Indexed: 12/26/2022]
Abstract
New generation titanium alloys with low elastic moduli are promising materials for medical implants, particularly load-bearing orthopaedic implants. In this paper, the effect of niobium content on the microstructure and mechanical properties of new Ti alloys including Ti-23Nb-7Zr, Ti-28Nb-7Zr and Ti-33Nb-7Zr (wt%) is studied. Ti-23Nb-7Zr was found to mainly form α΄ and α″- phases, while both the Ti-28Nb-7Zr and Ti-33Nb-7Zr consisted of α″ and β-phases with an increased amount of β-phase in the alloy with 33 wt% of Nb. X-ray diffraction and microstructural analyses showed that the addition of Nb stabilises the β-phase in the solution treated condition with the depleting amount of α΄ and α″- phases. The hardness and Young's modulus values were highest in Ti-23Nb-7Zr which is attributed to the high fraction of α΄- phase in this alloy. The Young's moduli achieved for the three alloys through nanoindentation were 35.9, 29.1 and 29.0 GPa, respectively. The new alloys are encouraging candidates for orthopaedic implants due to their low elastic modulus which can help inhibit stress shielding, although biocompatibility tests (in-vitro and in-vivo) are suggested for future work.
Collapse
Affiliation(s)
- Magdalen H C Tan
- College of Science and Engineering, Flinders University, Clovelly Park, SA, 5042, Australia
| | - Alireza Dareh Baghi
- School of Mechanical Engineering, University of Adelaide, Adelaide, SA, 5000, Australia
| | - Reza Ghomashchi
- School of Mechanical Engineering, University of Adelaide, Adelaide, SA, 5000, Australia
| | - Wenlong Xiao
- School of Materials Science and Engineering, Beihang University, Beijing, 100191, China
| | - Reza H Oskouei
- College of Science and Engineering, Flinders University, Clovelly Park, SA, 5042, Australia.
| |
Collapse
|
43
|
Ren X, Huo M, Wang M, Lin H, Zhang X, Yin J, Chen Y, Chen H. Highly Catalytic Niobium Carbide (MXene) Promotes Hematopoietic Recovery after Radiation by Free Radical Scavenging. ACS Nano 2019; 13:6438-6454. [PMID: 31180624 DOI: 10.1021/acsnano.8b09327] [Citation(s) in RCA: 103] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Ionizing radiation (IR) has been extensively used in industry and radiotherapy, but IR exposure from nuclear or radiological accidents often causes serious health effects in an exposed individual, and its application in radiotherapy inevitably brings undesirable damage to normal tissues. In this work, we have developed ultrathin two-dimensional (2D) niobium carbide (Nb2C) MXene as a radioprotectant and explored its application in scavenging free radicals against IR. The 2D Nb2C MXene features intriguing antioxidant properties in effectively eliminating hydrogen peroxide (H2O2), hydroxyl radicals (•OH), and superoxide radicals (O2•-). Pretreatment with biocompatible polyvinylpyrrolidone (PVP)-functionalized Nb2C nanosheets (Nb2C-PVP NSs) significantly reduces IR-induced production of reactive oxygen species (ROS), resulting in enhanced cell viability in vitro. A single intravenous injection of Nb2C-PVP significantly enhances the survival rate of 5 and 6.5 Gy irradiated mice to 100% and 81.25%, respectively, and significantly increases bone marrow mononuclear cells after IR. Critically, Nb2C-PVP reverses the damage of the hematopoietic system in irradiated mice. Single administration of Nb2C-PVP significantly increases superoxide dismutase (SOD) activities, decreases malondialdehyde levels, and thereby reduces IR-induced pathological damage in the testis, small intestine, lung, and liver of 5 Gy irradiated mice. Importantly, Nb2C-PVP is almost completely eliminated from the mouse body on day 14 post treatment, and no obvious toxicities are observed during the 30-day post treatment period. Our study pioneers the application of 2D MXenes with intrinsic radioprotective nature in vivo.
Collapse
Affiliation(s)
- Xiangyi Ren
- Department of Radiation Biology, Institute of Radiation Medicine , Fudan University , Shanghai , 200032 , People's Republic of China
| | - Minfeng Huo
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure , Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai , 200050 , People's Republic of China
- University of Chinese Academy of Science , Beijing , 100049 , People's Republic of China
| | - Mengmeng Wang
- Department of Radiation Biology, Institute of Radiation Medicine , Fudan University , Shanghai , 200032 , People's Republic of China
| | - Han Lin
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure , Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai , 200050 , People's Republic of China
- University of Chinese Academy of Science , Beijing , 100049 , People's Republic of China
| | - Xuxia Zhang
- Department of Radiation Biology, Institute of Radiation Medicine , Fudan University , Shanghai , 200032 , People's Republic of China
| | - Jun Yin
- Department of Radiation Biology, Institute of Radiation Medicine , Fudan University , Shanghai , 200032 , People's Republic of China
| | - Yu Chen
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure , Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai , 200050 , People's Republic of China
| | - Honghong Chen
- Department of Radiation Biology, Institute of Radiation Medicine , Fudan University , Shanghai , 200032 , People's Republic of China
| |
Collapse
|
44
|
Shen S, Xia X, Zhong Y, Deng S, Xie D, Liu B, Zhang Y, Pan G, Wang X, Tu J. Implanting Niobium Carbide into Trichoderma Spore Carbon: a New Advanced Host for Sulfur Cathodes. Adv Mater 2019; 31:e1900009. [PMID: 30843629 DOI: 10.1002/adma.201900009] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 01/30/2019] [Indexed: 05/28/2023]
Abstract
Tailored construction of advanced carbon hosts is playing a great role in the development of high-performance lithium-sulfur batteries (LSBs). Herein, a novel N,P-codoped trichoderma spore carbon (TSC) with a bowl structure, prepared by a "trichoderma bioreactor" and annealing process is reported. Moreover, TSC shows excellent compatibility with conductive niobium carbide (NbC), which is in situ implanted into the TSC matrix in the form of nanoparticles forming a highly porous TSC/NbC host. Importantly, NbC plays a dual role in TSC for not only pore formation but also enhancement of conductivity. Excitingly, the sulfur can be well accommodated in the TSC/NbC host forming a high-performance TSC/NbC-S cathode, which exhibits greatly enhanced rate performance (810 mAh g-1 at 5 C) and long cycling life (937.9 mAh g-1 at 0.1 C after 500 cycles), superior to TSC-S and other carbon/S counterparts due to the larger porosity, higher conductivity, and better synergetic trapping effect for the soluble polysulfide intermediate. The synergetic work of porous the conductive architecture, heterodoped N&P polar sites in TSC and polar conductive NbC provides new opportunities for enhancing physisorption and chemisorption of polysulfides leading to higher capacity and better rate capability.
Collapse
Affiliation(s)
- Shenghui Shen
- State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, and Department of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Xinhui Xia
- State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, and Department of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Yu Zhong
- State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, and Department of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Shengjue Deng
- State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, and Department of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Dong Xie
- Guangdong Engineering and Technology Research Center for Advanced Nanomaterials, School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan, 523808, P. R. China
| | - Bo Liu
- State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, and Department of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Yan Zhang
- State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, and Department of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Guoxiang Pan
- Department of Materials Chemistry, Huzhou University, Huzhou, 313000, P. R. China
| | - Xiuli Wang
- State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, and Department of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Jiangping Tu
- State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, and Department of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| |
Collapse
|
45
|
Wan Q, Zeng F, Yin J, Sun Y, Hu Y, Liu J, Wang Y, Li G, Guo D, Pan F. Phase-change nanoclusters embedded in a memristor for simulating synaptic learning. Nanoscale 2019; 11:5684-5692. [PMID: 30855052 DOI: 10.1039/c8nr09765h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A type of memristor with a structure of Pd/Nb : AlNO/Pd was designed and fabricated in this work. Its filaments are embedded by phase-change NbO nanoclusters confirmed by the analysis of cross-sectional profiles. The resistive switching mechanism includes the contribution of oxygen vacancy (VO) migration and the structural evolution of phase-change nanoclusters. The system experiences two types of kinetics under external stimulations to replicate the critical dynamics in real synapses: VO migration corresponding to the dynamics of the Ca2+ flux and transmitter release at the pre-synapse, and the phase change of the NbO nanoclusters corresponding to the ionic flux modulated by the post-synaptic potential (current). It was found that the memristor can respond to a set of pulse stimulations in a pattern containing a slow linear increase term and a periodic oscillation term, suggesting that the output signals might be encoded. The simulation of long-term plasticity indicates that the memristor is suitable for diverse learning protocols, including spike-rate dependent plasticity and spike-timing-dependent plasticity. Our work proposes an elementary cell that closely approximates biological synapses and is usable for brain-like computing.
Collapse
Affiliation(s)
- Qin Wan
- Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, China
| | | | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Wohlmuth da Silva S, Venzke CD, Bitencourt Welter J, Schneider DE, Zoppas Ferreira J, Siqueira Rodrigues MA, Moura Bernardes A. Electrooxidation Using Nb/BDD as Post-Treatment of a Reverse Osmosis Concentrate in the Petrochemical Industry. Int J Environ Res Public Health 2019; 16:ijerph16050816. [PMID: 30845691 PMCID: PMC6427655 DOI: 10.3390/ijerph16050816] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 02/26/2019] [Accepted: 03/01/2019] [Indexed: 11/16/2022]
Abstract
This work evaluated the performance of an electrochemical oxidation process (EOP), using boron-doped diamond on niobium substrate (Nb/BDD), for the treatment of a reverse osmosis concentrate (ROC) produced from a petrochemical wastewater. The effects of applied current density (5, 10, or 20 mA·cm-2) and oxidation time (0 to 5 h) were evaluated following changes in chemical oxygen demand (COD) and total organic carbon (TOC). Current efficiency and specific energy consumption were also evaluated. Besides, the organic byproducts generated by EOP were analyzed by gas chromatography coupled to mass spectrometry (GC⁻MS). The results show that current densities and oxidation time lead to a COD and TOC reduction. For the 20 mA·cm-2, changes in the kinetic regime were found at 3 h and associated to the oxidation of inorganic ions by chlorinated species. After 3 h, the oxidants act in the organic oxidation, leading to a TOC removal of 71%. Although, due to the evolution of parallel reactions (O₂, H₂O2, and O₃), the specific energy consumption also increased, the resulting consumption value of 66.5 kW·h·kg-1 of COD is considered a low energy requirement representing lower treatment costs. These results encourage the applicability of EOP equipped with Nb/BDD as a treatment process for the ROC.
Collapse
Affiliation(s)
- Salatiel Wohlmuth da Silva
- Universidade Federal do Rio Grande do Sul (UFRGS), Instituto de Pesquisas Hidráulicas (IPH), Av. Bento Gonçalves, Porto Alegre/RS 9500, Brazil.
- Universidade Federal do Rio Grande do Sul (UFRGS), Programa de Pós-Graduação em Engenharia de Minas, Metalúrgica e de Materiais (PPGEM), Av. Bento Gonçalves, Porto Alegre/RS 9500, Brazil.
| | - Carla Denize Venzke
- Universidade Federal do Rio Grande do Sul (UFRGS), Programa de Pós-Graduação em Engenharia de Minas, Metalúrgica e de Materiais (PPGEM), Av. Bento Gonçalves, Porto Alegre/RS 9500, Brazil.
| | - Júlia Bitencourt Welter
- Universidade Federal do Rio Grande do Sul (UFRGS), Programa de Pós-Graduação em Engenharia de Minas, Metalúrgica e de Materiais (PPGEM), Av. Bento Gonçalves, Porto Alegre/RS 9500, Brazil.
| | - Daniela Eduarda Schneider
- Universidade Federal do Rio Grande do Sul (UFRGS), Programa de Pós-Graduação em Engenharia de Minas, Metalúrgica e de Materiais (PPGEM), Av. Bento Gonçalves, Porto Alegre/RS 9500, Brazil.
| | - Jane Zoppas Ferreira
- Universidade Federal do Rio Grande do Sul (UFRGS), Programa de Pós-Graduação em Engenharia de Minas, Metalúrgica e de Materiais (PPGEM), Av. Bento Gonçalves, Porto Alegre/RS 9500, Brazil.
| | | | - Andréa Moura Bernardes
- Universidade Federal do Rio Grande do Sul (UFRGS), Programa de Pós-Graduação em Engenharia de Minas, Metalúrgica e de Materiais (PPGEM), Av. Bento Gonçalves, Porto Alegre/RS 9500, Brazil.
| |
Collapse
|
47
|
Abstract
Polyoxometalates (POMs) are an emerging class of inorganic metal oxides, which over the last decades demonstrated promising biological activities by the virtue of their great diversity in structures and properties. They possess high potential for the inhibition of various tumor types; however, their unspecific interactions with biomolecules and toxicity impede their clinical usage. The current focus of the field of biologically active POMs lies on organically functionalized and POM-based nanocomposite structures as these hybrids show enhanced anticancer activity and significantly reduced toxicity towards normal cells in comparison to unmodified POMs. Although the antitumor activity of POMs is well documented, their mechanisms of action are still not well understood. In this Review, an overview is given of the cytotoxic effects of POMs with a special focus on POM-based hybrid and nanocomposite structures. Furthermore, we aim to provide proposed mode of actions and to identify molecular targets. POMs are expected to develop into the next generation of anticancer drugs that selectively target cancer cells while sparing healthy cells.
Collapse
Affiliation(s)
- Aleksandar Bijelic
- Universität WienFakultät für ChemieInstitut für Biophysikalische ChemieAlthanstraße 141090WienAustria
| | - Manuel Aureliano
- Universidade do AlgarveFaculdade de Ciências e Tecnologia (FCT), CCMar8005-139FaroPortugal
| | - Annette Rompel
- Universität WienFakultät für ChemieInstitut für Biophysikalische ChemieAlthanstraße 141090WienAustria
| |
Collapse
|
48
|
Wang S, Lv X, Su Y, Fan Z, Fang W, Duan J, Zhang S, Ma B, Liu F, Chen H, Geng Z, Liu H. Piezoelectric Microchip for Cell Lysis through Cell-Microparticle Collision within a Microdroplet Driven by Surface Acoustic Wave Oscillation. Small 2019; 15:e1804593. [PMID: 30690881 DOI: 10.1002/smll.201804593] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 12/20/2018] [Indexed: 05/25/2023]
Abstract
Cell lysis is an important and crucial step for the detection of intracellular secrets. Usually, cell lysis is based on strong ultrasonic waves or toxic chemical regents, which require a large amount of cell suspension. To obtain high efficiency cell lysis for a small amount of sample, a mechanical cell lysis method based on a surface acoustic wave (SAW) microchip is proposed. The microchip simply consists of a piece of LiNbO3 crystal substrate, interdigitated transducers (IDTs) with 80 pairs of parallel electrodes and 3M Magic Tapes. The modulated input electrical signal is coupled into the substrate through IDTs, which produces an acoustic stream in the droplet on the surface of a substrate. When a biofluid droplet containing cells and microparticles is dropped on the surface of the microchip, the cells and microparticles are accelerated and collide with each other. The fluorescence staining results illustrate that the cell membrane is efficiently destroyed and that proteins as well as nucleic acids inside the cell are released. The experimental results show that this method has a high efficiency and low sample consumption. The potential application is the pretreatment of a small amount of tested sample in a hospital or biolab.
Collapse
Affiliation(s)
- Shicai Wang
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Xiaoqing Lv
- State Key Laboratory of Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yue Su
- State Key Laboratory of Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhiyuan Fan
- State Key Laboratory of Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Weihao Fang
- State Key Laboratory of Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jiazhi Duan
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Shan Zhang
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Baojin Ma
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Feng Liu
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Hongda Chen
- State Key Laboratory of Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhaoxin Geng
- State Key Laboratory of Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, P. R. China
- School of Information Engineering, Minzu University of China, Beijing, 100081, P. R. China
| | - Hong Liu
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
- Institute for Advanced Interdisciplinary Research, Jinan University, Jinan, 250022, P. R. China
| |
Collapse
|
49
|
Pantaroto HN, Amorim KP, Matozinho Cordeiro J, Souza JGS, Ricomini-Filho AP, Rangel EC, Ribeiro ALR, Vaz LG, Barão VAR. Proteome analysis of the salivary pellicle formed on titanium alloys containing niobium and zirconium. Biofouling 2019; 35:173-186. [PMID: 30935231 DOI: 10.1080/08927014.2019.1580360] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 01/17/2019] [Accepted: 02/04/2019] [Indexed: 06/09/2023]
Abstract
The chemical composition of biomaterials can drive their biological responses; therefore, this in vitro study aimed to evaluate the proteomic profile of the salivary pellicle formed on titanium (Ti) alloys containing niobium (Nb) and zirconium (Zr). The experimental groups consisted of Ti35NbxZr (x = 5 and 10 wt%) alloys, and commercially pure titanium (cpTi); titanium aluminium vanadium (Ti6Al4V) alloys were used as controls. The physical and chemical characteristics of the Ti materials were analysed. The proteomic profile was evaluated by liquid chromatography coupled with tandem mass spectrometry. Bacterial adhesion (2 h) of mixed species (Streptococcus sanguinis and Actinomyces naeslundii) was investigated as colony-forming units (n = 6). This paper reports the finding that salivary pellicle composition can be modulated by the composition of the Ti material. The Ti35NbxZr group showed a significant ability to adsorb proteins from saliva, which can favour interactions with cells and compatibility with the body.
Collapse
Affiliation(s)
- Heloisa Navarro Pantaroto
- a Department of Prosthodontics and Periodontology , Piracicaba Dental School, University of Campinas (UNICAMP) , Piracicaba , São Paulo , Brazil
| | - Karina Pintaudi Amorim
- a Department of Prosthodontics and Periodontology , Piracicaba Dental School, University of Campinas (UNICAMP) , Piracicaba , São Paulo , Brazil
| | - Jairo Matozinho Cordeiro
- a Department of Prosthodontics and Periodontology , Piracicaba Dental School, University of Campinas (UNICAMP) , Piracicaba , São Paulo , Brazil
| | - João Gabriel S Souza
- a Department of Prosthodontics and Periodontology , Piracicaba Dental School, University of Campinas (UNICAMP) , Piracicaba , São Paulo , Brazil
| | - Antônio Pedro Ricomini-Filho
- b Department of Physiological Science , Piracicaba Dental School, University of Campinas (UNICAMP) , Piracicaba , São Paulo , Brazil
| | - Elidiane C Rangel
- c Laboratory of Technological Plasmas, Engineering College , University Estadual Paulista (UNESP) , Sorocaba , São Paulo , Brazil
- d Faculdade de Ciências do Tocantins (FACIT) , Araguaína , Tocantins , Brazil
| | - Ana Lúcia R Ribeiro
- e Faculdade de Ciências Humanas, Econômicas e da Saúde de Araguaína/Instituto Tocantinense Presidente Antônio Carlos (FAHESA/ITPAC) , Araguaína , Tocantins , Brazil
| | - Luís Geraldo Vaz
- f Department of Dental Materials and Prosthodontics , University Estadual Paulista (UNESP), Araraquara Dental School , Araraquara , São Paulo , Brazil
| | - Valentim A R Barão
- a Department of Prosthodontics and Periodontology , Piracicaba Dental School, University of Campinas (UNICAMP) , Piracicaba , São Paulo , Brazil
| |
Collapse
|
50
|
Rega R, Gennari O, Mecozzi L, Pagliarulo V, Bramanti A, Ferraro P, Grilli S. Maskless Arrayed Nanofiber Mats by Bipolar Pyroelectrospinning. ACS Appl Mater Interfaces 2019; 11:3382-3387. [PMID: 30609347 DOI: 10.1021/acsami.8b12513] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The numerous advantages of micro- and nanostructures produced by electrospinning (ES) have stimulated enormous interest in this technology with potential application in several fields. However, ES still has some limitations in controlling the geometrical arrangement of the fiber mats so that expensive and time-consuming technologies are usually employed for producing ordered geometries. Here we present a technique that we call "bipolar pyroelectrospinning" (b-PES) for generating ordered arrays of fiber mats in a direct manner by using the bipolar pyroelectric field produced by a periodically poled lithium niobate crystal (PPLN). The b-PES is free from expensive electrodes, nozzles, and masks because it makes use simply of the structured pyroelectric field produced by the PPLN crystal used as collector. The results show clearly the reliability of the technique in producing a wide variety of arrayed fiber mats that could find application in bioengineering or many other fields. Preliminary results of live cells patterning under controlled geometrical constraints is also reported and discussed in order to show potential exploitation as a scaffold in tissue engineering.
Collapse
Affiliation(s)
- Romina Rega
- National Research Council (CNR) , Institute of Applied Sciences & Intelligent Systems (ISASI) 'E. Caianiello' , Via Campi Flegrei 34 , 80078 Pozzuoli ( NA ), Italy
| | - Oriella Gennari
- National Research Council (CNR) , Institute of Applied Sciences & Intelligent Systems (ISASI) 'E. Caianiello' , Via Campi Flegrei 34 , 80078 Pozzuoli ( NA ), Italy
| | - Laura Mecozzi
- National Research Council (CNR) , Institute of Applied Sciences & Intelligent Systems (ISASI) 'E. Caianiello' , Via Campi Flegrei 34 , 80078 Pozzuoli ( NA ), Italy
| | - Vito Pagliarulo
- National Research Council (CNR) , Institute of Applied Sciences & Intelligent Systems (ISASI) 'E. Caianiello' , Via Campi Flegrei 34 , 80078 Pozzuoli ( NA ), Italy
| | - Alessia Bramanti
- National Research Council (CNR) , Institute of Applied Sciences & Intelligent Systems (ISASI) 'E. Caianiello' , Via Campi Flegrei 34 , 80078 Pozzuoli ( NA ), Italy
- IRCCS Centro Neurolesi "Bonino-Pulejo" , Contrada Casazza SS113 , 98124 Messina , Italy
| | - Pietro Ferraro
- National Research Council (CNR) , Institute of Applied Sciences & Intelligent Systems (ISASI) 'E. Caianiello' , Via Campi Flegrei 34 , 80078 Pozzuoli ( NA ), Italy
| | - Simonetta Grilli
- National Research Council (CNR) , Institute of Applied Sciences & Intelligent Systems (ISASI) 'E. Caianiello' , Via Campi Flegrei 34 , 80078 Pozzuoli ( NA ), Italy
| |
Collapse
|