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Zhong K, Sun P, Xu H. Advances in Defect Engineering of Metal Oxides for Photocatalytic CO 2 Reduction. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2310677. [PMID: 38686700 DOI: 10.1002/smll.202310677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 02/29/2024] [Indexed: 05/02/2024]
Abstract
Photocatalytic CO2 reduction technology, capable of converting low-density solar energy into high-density chemical energy, stands as a promising approach to alleviate the energy crisis and achieve carbon neutrality. Semiconductor metal oxides, characterized by their abundant reserves, good stability, and easily tunable structures, have found extensive applications in the field of photocatalysis. However, the wide bandgap inherent in metal oxides contributes to their poor efficiency in photocatalytic CO2 reduction. Defect engineering presents an effective strategy to address these challenges. This paper reviews the research progress in defect engineering to enhance the photocatalytic CO2 reduction performance of metal oxides, summarizing defect classifications, preparation methods, and characterization techniques. The focus is on defect engineering, represented by vacancies and doping, for improving the performance of metal oxide photocatalysts. This includes advancements in expanding the photoresponse range, enhancing photogenerated charge separation, and promoting CO2 molecule activation. Finally, the paper provides a summary of the current issues and challenges faced by defect engineering, along with a prospective outlook on the future development of photocatalytic CO2 reduction technology.
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Affiliation(s)
- Kang Zhong
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, P. R. China
| | - Peipei Sun
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, P. R. China
| | - Hui Xu
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, P. R. China
- Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou, 215009, P. R. China
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2
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Prabhu N, Shivamurthy B, Anandhan S, Rajendra BV, Basanna JC, Srivathsa M. An Investigation on the Acetone and Ethanol Vapor-Sensing Behavior of Sol-Gel Electrospun ZnO Nanofibers Using an Indigenous Setup. ACS OMEGA 2023; 8:49057-49066. [PMID: 38162738 PMCID: PMC10753564 DOI: 10.1021/acsomega.3c06744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 11/23/2023] [Accepted: 11/29/2023] [Indexed: 01/03/2024]
Abstract
The calibration is essential for accuracy, repeatability, and continuous trouble-free operation of gas sensors with safety. Most gas sensors are fabricated using metal oxide nanomaterials in different structures such as films, coating, or nanofibers. Therefore, a device in the sensor manufacturing industry is necessary to test, calibrate, and optimize metal oxide structures. In this point of view, a simple device is developed to test and estimate the sensing response, response time, and recovery time of nanostructures. The sol-gel method was used to produce nanofibers through electrospinning. An average fiber diameter of 245 nm was obtained after pyrolysis at 600 °C. The structure and composition of ZnO nanofibers are confirmed by X-ray diffraction, scanning electron microscopy, and Brunauer-Emmett-Teller. The trials were taken using ZnO nanofibers in the presence of acetone and ethanol vapor, and the results were reported. High response (31.74), rapid response (40 s), and recovery (30 s) times have been achieved for ethanol gas to 50 ppm concentration test gas at an optimal temperature of 260 °C. The results obtained from the trials are compared with the literature results, which are in line with the values presented by the various researchers. Due to the low cost, easy maintenance, and accuracy, this device is recommended in metal oxide sensor development industries and laboratories.
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Affiliation(s)
- Niranjan
N Prabhu
- Department
of Mechanical & Industrial Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal 576104, India
| | - Basavannadevaru Shivamurthy
- Department
of Mechanical & Industrial Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal 576104, India
| | - Srinivasan Anandhan
- Department
of Metallurgical and Materials Engineering, National Institute of Technology-Karnataka, Srinivas Nagar, Mangalore 575025, India
| | | | - Jagadeesh Chandra
Regati Basanna
- Department
of Electronics and Communication Engineering, Manipal Institute of
Technology, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Manu Srivathsa
- Department
of Physics, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
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3
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Triolo C, Maisuradze M, Li M, Liu Y, Ponti A, Pagot G, Di Noto V, Aquilanti G, Pinna N, Giorgetti M, Santangelo S. Charge Storage Mechanism in Electrospun Spinel-Structured High-Entropy (Mn 0.2 Fe 0.2 Co 0.2 Ni 0.2 Zn 0.2 ) 3 O 4 Oxide Nanofibers as Anode Material for Li-Ion Batteries. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2304585. [PMID: 37469201 DOI: 10.1002/smll.202304585] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/11/2023] [Indexed: 07/21/2023]
Abstract
High-entropy oxides (HEOs) have emerged as promising anode materials for next-generation lithium-ion batteries (LIBs). Among them, spinel HEOs with vacant lattice sites allowing for lithium insertion and diffusion seem particularly attractive. In this work, electrospun oxygen-deficient (Mn,Fe,Co,Ni,Zn) HEO nanofibers are produced under environmentally friendly calcination conditions and evaluated as anode active material in LIBs. A thorough investigation of the material properties and Li+ storage mechanism is carried out by several analytical techniques, including ex situ synchrotron X-ray absorption spectroscopy. The lithiation process is elucidated in terms of lithium insertion, cation migration, and metal-forming conversion reaction. The process is not fully reversible and the reduction of cations to the metallic form is not complete. In particular, iron, cobalt, and nickel, initially present mainly as Fe3+ , Co3+ /Co2+ , and Ni2+ , undergo reduction to Fe0 , Co0 , and Ni0 to different extent (Fe < Co < Ni). Manganese undergoes partial reduction to Mn3+ /Mn2+ and, upon re-oxidation, does not revert to the pristine oxidation state (+4). Zn2+ cations do not electrochemically participate in the conversion reaction, but migrating from tetrahedral to octahedral positions, they facilitate Li-ion transport within lattice channels opened by their migration. Partially reversible crystal phase transitions are observed.
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Affiliation(s)
- Claudia Triolo
- Dipartimento di Ingegneria Civile, dell'Energia, dell'Ambiente e dei Materiali (DICEAM), Università "Mediterranea,", Via Zehender, Loc. Feo di Vito, Reggio Calabria, 89122, Italy
- National Reference Center for Electrochemical Energy Storage (GISEL), Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), Firenze, 50121, Italy
| | - Mariam Maisuradze
- National Reference Center for Electrochemical Energy Storage (GISEL), Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), Firenze, 50121, Italy
- Department of Industrial Chemistry "Toso Montanari", University of Bologna, Viale del Risorgimento 4, Bologna, 40136, Italy
| | - Min Li
- National Reference Center for Electrochemical Energy Storage (GISEL), Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), Firenze, 50121, Italy
- Department of Industrial Chemistry "Toso Montanari", University of Bologna, Viale del Risorgimento 4, Bologna, 40136, Italy
| | - Yanchen Liu
- Department of Chemistry, IRIS Adlershof & The Center for the Science of Materials Berlin, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489, Berlin, Germany
| | - Alessandro Ponti
- Laboratorio di Nanotecnologie, Istituto di Scienze e Tecnologie Chimiche "Giulio Natta" (SCITEC), Consiglio Nazionale delle Ricerche, Via Fantoli 16/15, Milano, 20138, Italy
| | - Gioele Pagot
- National Reference Center for Electrochemical Energy Storage (GISEL), Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), Firenze, 50121, Italy
- Department of Industrial Engineering, Section of Chemistry for the Technology (ChemTech), University of Padova, Via Marzolo 9, Padova (PD), 35131, Italy
| | - Vito Di Noto
- National Reference Center for Electrochemical Energy Storage (GISEL), Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), Firenze, 50121, Italy
- Department of Industrial Engineering, Section of Chemistry for the Technology (ChemTech), University of Padova, Via Marzolo 9, Padova (PD), 35131, Italy
| | - Giuliana Aquilanti
- Elettra Sincrotrone Trieste S.C.p.A., s.s. 14 km 163.5, Basovizza, Trieste, 34149, Italy
| | - Nicola Pinna
- Department of Chemistry, IRIS Adlershof & The Center for the Science of Materials Berlin, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489, Berlin, Germany
| | - Marco Giorgetti
- National Reference Center for Electrochemical Energy Storage (GISEL), Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), Firenze, 50121, Italy
- Department of Industrial Chemistry "Toso Montanari", University of Bologna, Viale del Risorgimento 4, Bologna, 40136, Italy
| | - Saveria Santangelo
- Dipartimento di Ingegneria Civile, dell'Energia, dell'Ambiente e dei Materiali (DICEAM), Università "Mediterranea,", Via Zehender, Loc. Feo di Vito, Reggio Calabria, 89122, Italy
- National Reference Center for Electrochemical Energy Storage (GISEL), Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), Firenze, 50121, Italy
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Ding D, Li Z, Yu S, Yang B, Yin Y, Zan L, Myung NV. Piezo-photocatalytic flexible PAN/TiO 2 composite nanofibers for environmental remediation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 824:153790. [PMID: 35150683 DOI: 10.1016/j.scitotenv.2022.153790] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 02/05/2022] [Accepted: 02/06/2022] [Indexed: 06/14/2023]
Abstract
Mechanical vibrations and solar energy are ubiquitous in the environment. Hereon, we report the synergic enhancement of the oxidation by simultaneously harvesting solar and mechanical vibrations through flexible piezo and photocatalytic composite nanofiber mats. Surface enriched titanium dioxide nanoparticles incorporated in polyacrylonitrile (PAN/TiO2) nanofibers were synthesized using a single pot electrospinning process with well-defined fiber diameters with widely tunable loading density. By incorporating photocatalytic TiO2 in flexible piezoelectric PAN nanofiber support, piezoelectric fields generated under the mechanical deformation promote the separation of the photogenerated electrons and holes to accelerate oxidation of pollutants. Our results demonstrated that the catalytic activity of PAN/TiO2 nanofibers in photodegradation of Rhodamine B (RhB) can be greatly enhanced by environmental vibration-induced piezoelectricity of PAN nanofibers, with a maximum enhancement factor of ~2.5. The working mechanism for the enhanced photocatalytic activity of PAN/TiO2 nanofibers by the mechanical vibrations were attributed to the piezoelectric effect of PAN nanofibers, which could efficiently promote the separation of the photogenerated electrons and holes in the TiO2 nanoparticles. We believe the approach to enhancing the catalytic activity of mat can make full use of the polymer properties and natural energy, and it also can be extended to other composite polymer/semiconductor systems.
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Affiliation(s)
- Deng Ding
- College of Chemistry and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, China
| | - Zhiwei Li
- Department of Chemistry, University of California, Riverside, California 92521, USA
| | - Sooyung Yu
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, IN 46556, USA
| | - Bingxin Yang
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, IN 46556, USA
| | - Yadong Yin
- Department of Chemistry, University of California, Riverside, California 92521, USA
| | - Ling Zan
- College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, China
| | - Nosang Vincent Myung
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, IN 46556, USA.
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Behera A, Kar AK, Srivastava R. Challenges and prospects in the selective photoreduction of CO 2 to C1 and C2 products with nanostructured materials: a review. MATERIALS HORIZONS 2022; 9:607-639. [PMID: 34897343 DOI: 10.1039/d1mh01490k] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Solar fuel generation through CO2 hydrogenation is the ultimate strategy to produce sustainable energy sources and alleviate global warming. The photocatalytic CO2 conversion process resembles natural photosynthesis, which regulates the ecological systems of the earth. Currently, most of the work in this field has been focused on boosting efficiency rather than controlling the distribution of products. The structural architecture of the semiconductor photocatalyst, CO2 photoreduction process, product analysis, and elucidating the CO2 photoreduction mechanism are the key features of the photoreduction of CO2 to generate C1 and C2 based hydrocarbon fuels. The selectivity of C1 and C2 products during the photocatalytic CO2 reduction have been ameliorated by suitable photocatalyst design, co-catalyst, defect states, and the impacts of the surface polarisation state, etc. Monitoring product selectivity allows the establishment of an appropriate strategy to generate a more reduced state of a hydrocarbon, such as CH4 or higher carbon (C2) products. This article concentrates on studies that demonstrate the production of C1 and C2 products during CO2 photoreduction using H2O or H2 as an electron and proton source. Finally, it highlights unresolved difficulties in achieving high selectivity and photoconversion efficiency of CO2 in C1 and C2 products over various nanostructured materials.
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Affiliation(s)
- Arjun Behera
- Catalysis Research Laboratory, Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar-140001, India.
| | - Ashish Kumar Kar
- Catalysis Research Laboratory, Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar-140001, India.
| | - Rajendra Srivastava
- Catalysis Research Laboratory, Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar-140001, India.
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6
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Fukuda Y, Kutsukake K, Kojima T, Usami N. Effects of grain boundary structure and shape of the solid-liquid interface on the growth direction of the grain boundaries in multicrystalline silicon. CrystEngComm 2022. [DOI: 10.1039/d1ce01573g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report on the effects of grain boundary (GB) structure on the growth direction of the GBs by utilizing silicon ingots with artificially designed asymmetric tilt GBs. The ingots were...
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7
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Chen M, Liu P, He JH, Wang HL, Zhang H, Wang X, Chen R. Nanofiber template-induced preparation of ZnO nanocrystal and its application in photocatalysis. Sci Rep 2021; 11:21196. [PMID: 34707102 PMCID: PMC8551286 DOI: 10.1038/s41598-021-00303-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 09/29/2021] [Indexed: 11/24/2022] Open
Abstract
Traditional preparation of ZnO nanocrystal requires heating zinc acetate to a temperature over 350 °C, whereas in this work, zinc acetate was first electrospun with PVDF to form a nanofiber, followed by thermal treatment at only 140 °C to give nanocrystalline ZnO. The much lower temperature required in thermal treatment is attributed to the high reactivity of zinc acetate at nano dimension. The as-prepared ZnO-doped PVDF nanofiber mat shows excellent effect in the photocatalytic degradation of Rhodamine B, comparable to ZnO particle thermally treated at 600 °C. Highly-oriented ZnO nanorods were obtained by further hydrothermal synthesis of the electrospun nanofiber mat, giving nanostructured ZnO of different morphologies well-aligned on the surface of organic nanofiber. Notably, the hydrothermal synthesis of the successful preparation of these nanostructured ZnO requires a processing temperature below 100 °C at atmospheric pressure, showing great potential to be scaled up for vast manufacturing.
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Affiliation(s)
- Mingyi Chen
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Peng Liu
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, 215123, China
| | - Ji-Huan He
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, 215123, China
| | - Hsing-Lin Wang
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Haonan Zhang
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Xin Wang
- Songshan Lake Materials Laboratory, Dongguan, 523808, China.
| | - Rouxi Chen
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
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8
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Balusamy B, Senthamizhan A, Celebioglu A, Uyar T. Single nozzle electrospinning promoted hierarchical shell wall structured zinc oxide hollow tubes for water remediation. J Colloid Interface Sci 2021; 593:162-171. [PMID: 33744527 DOI: 10.1016/j.jcis.2021.02.089] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 02/15/2021] [Accepted: 02/21/2021] [Indexed: 11/25/2022]
Abstract
HYPOTHESIS Electrospun metal oxide hollow tubes are of great interest owing to their unique structural advantages compared to solid nanofibers. Although intensive research on preparation of hollow tubes have been devoted, formation of hierarchical shells remains a significant challenge. EXPERIMENTS Herein, we demonstrate the fabrication of highly uniform, reproducible and industrially feasible ZnO hollow tubes (ZHT) with two-level hierarchical shells via a simple and versatile single-nozzle electrospinning strategy coupled with subsequent controlled thermal treatment. FINDINGS The morphological investigation reveals that the hollow tubes built from nanostructures which has unique surface structure on their wall. The mechanism by which the composite fibers transferred to hollow tubes is primarily based on the evaporation rate of the polymeric template. Notably, tuning the heating rate from 5 °C to 50 °C/min possess adverse effect on formation of hollow tubes, thus subsequently produced ZnO nanoplates (ZNP). The comparative photocatalytic analysis emphasized that ZHT shows higher photocatalytic activity than ZNP. This finding has made an evident that the inherent abundant defects in the electrospun derived nanostructures are not only sufficient for improving the photocatalytic activity. Studies on bacterial growth inhibition showcased a superior bactericidal effect against Staphylococcus aureus and Escherichia coli implying its potentiality for disinfecting the bacteria from water.
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Affiliation(s)
- Brabu Balusamy
- Institute of Materials Science & Nanotechnology, UNAM-National Nanotechnology Research Center, Bilkent University, Ankara 06800, Turkey.
| | - Anitha Senthamizhan
- Institute of Materials Science & Nanotechnology, UNAM-National Nanotechnology Research Center, Bilkent University, Ankara 06800, Turkey.
| | - Asli Celebioglu
- Institute of Materials Science & Nanotechnology, UNAM-National Nanotechnology Research Center, Bilkent University, Ankara 06800, Turkey
| | - Tamer Uyar
- Institute of Materials Science & Nanotechnology, UNAM-National Nanotechnology Research Center, Bilkent University, Ankara 06800, Turkey; Department of Fiber Science & Apparel Design, College of Human Ecology, Cornell University, Ithaca, NY 14853, USA.
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Ottone C, Pugliese D, Laurenti M, Hernández S, Cauda V, Grez P, Wilson L. ZnO Materials as Effective Anodes for the Photoelectrochemical Regeneration of Enzymatically Active NAD . ACS APPLIED MATERIALS & INTERFACES 2021; 13:10719-10727. [PMID: 33645209 DOI: 10.1021/acsami.0c20630] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
This work reports the study of ZnO-based anodes for the photoelectrochemical regeneration of the oxidized form of nicotinamide adenine dinucleotide (NAD+). The latter is the most important coenzyme for dehydrogenases. However, the high costs of NAD+ limit the use of such enzymes at the industrial level. The influence of the ZnO morphologies (flower-like, porous film, and nanowires), showing different surface area and crystallinity, was studied. The detection of diluted solutions (0.1 mM) of the reduced form of the coenzyme (NADH) was accomplished by the flower-like and the porous films, whereas concentrations greater than 20 mM were needed for the detection of NADH with nanowire-shaped ZnO-based electrodes. The photocatalytic activity of ZnO was reduced at increasing concentrations of NAD+ because part of the ultraviolet irradiation was absorbed by the coenzyme, reducing the photons available for the ZnO material. The higher electrochemical surface area of the flower-like film makes it suitable for the regeneration reaction. The illumination of the electrodes led to a significant increase on the NAD+ regeneration with respect to both the electrochemical oxidation in dark and the only photochemical reaction. The tests with formate dehydrogenase demonstrated that 94% of the regenerated NAD+ was enzymatically active.
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Affiliation(s)
- Carminna Ottone
- Escuela de Ingeniería Bioquímica, Pontificia Universidad Católica de Valparaíso, Av. Brasil 2085, 2340000 Valparaiso, Chile
| | - Diego Pugliese
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Turin, Italy
| | - Marco Laurenti
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Turin, Italy
| | - Simelys Hernández
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Turin, Italy
| | - Valentina Cauda
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Turin, Italy
| | - Paula Grez
- Instituto de Química, Pontificia Universidad Católica de Valparaíso, Av. Universidad 330, Curauma, 2340000 Valparaiso, Chile
| | - Lorena Wilson
- Escuela de Ingeniería Bioquímica, Pontificia Universidad Católica de Valparaíso, Av. Brasil 2085, 2340000 Valparaiso, Chile
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Balusamy B, Celebioglu A, Senthamizhan A, Uyar T. Progress in the design and development of "fast-dissolving" electrospun nanofibers based drug delivery systems - A systematic review. J Control Release 2020; 326:482-509. [PMID: 32721525 DOI: 10.1016/j.jconrel.2020.07.038] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 07/21/2020] [Accepted: 07/22/2020] [Indexed: 12/13/2022]
Abstract
Electrospinning has emerged as most viable approach for the fabrication of nanofibers with several beneficial features that are essential to various applications ranging from environment to biomedicine. The electrospun nanofiber based drug delivery systems have shown tremendous advancements over the controlled and sustained release complemented from their high surface area, tunable porosity, mechanical endurance, offer compatible environment for drug encapsulation, biocompatibility, high drug loading and tailorable release characteristics. The dosage formulation of poorly water-soluble drugs often faces several challenges including complete dissolution with maximum therapeutic efficiency over a short period of time especially through oral administration. In this context, challenges associated with the dosage formulation of poorly-water soluble drugs can be addressed through combining the beneficial features of electrospun nanofibers. This review describes major developments progressed in the preparation of electrospun nanofibers based "fast dissolving" drug delivery systems by employing variety of polymers, drug molecules and encapsulation approaches with primary focus on oral delivery. Furthermore, the review also highlights current scientific challenges and provide an outlook with regard to future prospectus.
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Affiliation(s)
- Brabu Balusamy
- Department of Fiber Science & Apparel Design, College of Human Ecology, Cornell University, Ithaca, NY 14853, USA.
| | - Asli Celebioglu
- Department of Fiber Science & Apparel Design, College of Human Ecology, Cornell University, Ithaca, NY 14853, USA
| | - Anitha Senthamizhan
- Department of Fiber Science & Apparel Design, College of Human Ecology, Cornell University, Ithaca, NY 14853, USA
| | - Tamer Uyar
- Department of Fiber Science & Apparel Design, College of Human Ecology, Cornell University, Ithaca, NY 14853, USA.
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11
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Luo Q, Cao H, Wang L, Ma X, Liu X. ZnO@ZnS nanorod-array coated titanium: Good to fibroblasts but bad to bacteria. J Colloid Interface Sci 2020; 579:50-60. [PMID: 32570030 DOI: 10.1016/j.jcis.2020.06.055] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 06/07/2020] [Accepted: 06/11/2020] [Indexed: 02/02/2023]
Abstract
Cell-selective toxic titanium is highly desired in clinical dental practice. Herein, based on the in situ conversion of ZnO to ZnO@ZnS, nanorod-array structured coatings with a controllable release features of zinc (Zn), has been successfully fabricated by a two-step hydrothermal method to endow titanium surface with cell-selectivity, i.e. boosting the functions (attachment and migration) of human gingival fibroblasts (HGnFs) while acting against the invasion of pathogenic bacteria. The improved functions of HGnFs over the ZnO@ZnS nanorod-array were attributed to the material's optimized zinc release, which was decreased from an order of 3.5 mg L-1 to about 0.3 mg L-1 (within the first week). But more importantly, this concentration still had a high antibacterial efficacy up to 100% (against both the S. aureus and E. coli, 107 CFU mL-1). This study demonstrated that a ZnO@ZnS nanorod-array coating could be a promising strategy to endow titanium dental implants with improved soft tissue sealing and effectively reduce peri-implantitis.
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Affiliation(s)
- Qiming Luo
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Huiliang Cao
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China; Materials Science, Otto Schott Institute of Materials Research (OSIM), Friedrich Schiller University Jena, Jena D-07743, Germany.
| | - Lanyu Wang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaohan Ma
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
| | - Xuanyong Liu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China.
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12
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Balusamy B, Senthamizhan A, Uyar T. Functionalized Electrospun Nanofibers as a Versatile Platform for Colorimetric Detection of Heavy Metal Ions in Water: A Review. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E2421. [PMID: 32466258 PMCID: PMC7288479 DOI: 10.3390/ma13102421] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 05/22/2020] [Accepted: 05/22/2020] [Indexed: 01/09/2023]
Abstract
The increasing heavy metal pollution in the aquatic ecosystem mainly driven by industrial activities has raised severe concerns over human and environmental health that apparently necessitate the design and development of ideal strategies for the effective monitoring of heavy metals. In this regard, colorimetric detection provides excellent opportunities for the easy monitoring of heavy metal ions, and especially, corresponding solid-state sensors enable potential opportunities for their applicability in real-world monitoring. As a result of the significant interest originating from their simplicity, exceptional characteristics, and applicability, the electrospun nanofiber-based colorimetric detection of heavy metal ions has undergone radical developments in the recent decade. This review illustrates the range of various approaches and functional molecules employed in the fabrication of electrospun nanofibers intended for the colorimetric detection of various metal ions in water. We highlight relevant investigations on the fabrication of functionalized electrospun nanofibers encompassing different approaches and functional molecules along with their sensing performance. Furthermore, we discuss upcoming prospectus and future opportunities in the exploration of designing electrospun nanofiber-based colorimetric sensors for real-world applications.
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Affiliation(s)
- Brabu Balusamy
- Department of Fiber Science & Apparel Design, College of Human Ecology, Cornell University, Ithaca, NY 14853, USA
| | - Anitha Senthamizhan
- Department of Fiber Science & Apparel Design, College of Human Ecology, Cornell University, Ithaca, NY 14853, USA
| | - Tamer Uyar
- Department of Fiber Science & Apparel Design, College of Human Ecology, Cornell University, Ithaca, NY 14853, USA
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Mariano R, Yau A, McKeown JT, Kumar M, Kanan MW. Comparing Scanning Electron Microscope and Transmission Electron Microscope Grain Mapping Techniques Applied to Well-Defined and Highly Irregular Nanoparticles. ACS OMEGA 2020; 5:2791-2799. [PMID: 32095702 PMCID: PMC7033971 DOI: 10.1021/acsomega.9b03505] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Accepted: 01/27/2020] [Indexed: 06/10/2023]
Abstract
Investigating how grain structure affects the functional properties of nanoparticles requires a robust method for nanoscale grain mapping. In this study, we directly compare the grain mapping ability of transmission Kikuchi diffraction (TKD) in a scanning electron microscope to automated crystal orientation mapping (ACOM) in a transmission electron microscope across multiple nanoparticle materials. Analysis of well-defined Au, ZnO, and ZnSe nanoparticles showed that the grain orientations and GB geometries obtained by TKD are accurate and match those obtained by ACOM. For more complex polycrystalline Cu nanostructures, TKD provided an interpretable grain map whereas ACOM, with or without precession electron diffraction, yielded speckled, uninterpretable maps with orientation errors. Acquisition times for TKD were generally shorter than those for ACOM. Our results validate the use of TKD for characterizing grain orientation and grain boundary distributions in nanoparticles, providing a framework for the broader exploration of how microstructure influences nanoparticle properties.
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Affiliation(s)
- Ruperto
G. Mariano
- Department
of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Allison Yau
- Department
of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Joseph T. McKeown
- Materials
Science Division, Lawrence Livermore National
Laboratory, Livermore, California 94550, United States
| | - Mukul Kumar
- Materials
Engineering Division, Lawrence Livermore
National Laboratory, Livermore, California 94550, United States
| | - Matthew W. Kanan
- Department
of Chemistry, Stanford University, Stanford, California 94305, United States
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Balusamy B, Senthamizhan A, Uyar T. Functionalized Electrospun Nanofibers as Colorimetric Sensory Probe for Mercury Detection: A Review. SENSORS (BASEL, SWITZERLAND) 2019; 19:E4763. [PMID: 31684017 PMCID: PMC6864735 DOI: 10.3390/s19214763] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Revised: 10/20/2019] [Accepted: 10/30/2019] [Indexed: 01/09/2023]
Abstract
Mercury is considered the most hazardous pollutant of aquatic resources; it exerts numerous adverse effects on environmental and human health. To date, significant progress has been made in employing a variety of nanomaterials for the colorimetric detection of mercury ions. Electrospun nanofibers exhibit several beneficial features, including a large surface area, porous nature, and easy functionalization; thus, providing several opportunities to encapsulate a variety of functional materials for sensing applications with enhanced sensitivity and selectivity, and a fast response. In this review, several examples of electrospun nanofiber-based sensing platforms devised by utilizing the two foremost approaches, namely, direct incorporation and surface decoration envisioned for detection of mercury ions are provided. We believe these examples provide sufficient evidence for the potential use and progress of electrospun nanofibers toward colorimetric sensing of mercury ions. Furthermore, the summary of the review is focused on providing an insight into the future directions of designing electrospun nanofiber-based, metal ion colorimetric sensors for practical applications.
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Affiliation(s)
- Brabu Balusamy
- Fondazione Istituto Italiano di Tecnologia, Via Morego, 30, 16163 Genova, Italy.
| | - Anitha Senthamizhan
- Fondazione Istituto Italiano di Tecnologia, Via Morego, 30, 16163 Genova, Italy.
| | - Tamer Uyar
- Department of Fiber Science & Apparel Design, College of Human Ecology, Cornell University, Ithaca, NY 14853, USA.
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Balusamy B, Sarioglu OF, Senthamizhan A, Uyar T. Rational Design and Development of Electrospun Nanofibrous Biohybrid Composites. ACS APPLIED BIO MATERIALS 2019; 2:3128-3143. [DOI: 10.1021/acsabm.9b00308] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Brabu Balusamy
- Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Omer Faruk Sarioglu
- E-Kalite Software, METU Technopolis Twin Blocks, Middle East Technical University, 06800 Ankara, Turkey
| | | | - Tamer Uyar
- Department of Fiber Science & Apparel Design, College of Human Ecology, Cornell University, Ithaca, New York 14853, United States
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M. R, T. K. N, V. P. N. N, M. K. Understanding the role of alcohols in the growth behaviour of ZnO nanostructures prepared by solution based synthesis and their application in solar cells. NEW J CHEM 2019. [DOI: 10.1039/c9nj03212f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
We report the successful control of the ZnO nanostructures by a simple solution method using alcohols such as methanol, ethanol, butanol, hexanol, octanol and decanol as solvents.
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Affiliation(s)
- Ramya M.
- International School of Photonics
- Cochin University of Science and Technology
- Kochi
- India
| | - Nideep T. K.
- International School of Photonics
- Cochin University of Science and Technology
- Kochi
- India
| | - Nampoori V. P. N.
- International School of Photonics
- Cochin University of Science and Technology
- Kochi
- India
| | - Kailasnath M.
- International School of Photonics
- Cochin University of Science and Technology
- Kochi
- India
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Pradhan AC, Uyar T. Morphological Control of Mesoporosity and Nanoparticles within Co 3O 4-CuO Electrospun Nanofibers: Quantum Confinement and Visible Light Photocatalysis Performance. ACS APPLIED MATERIALS & INTERFACES 2017; 9:35757-35774. [PMID: 28948778 DOI: 10.1021/acsami.7b09026] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The one-dimensional (1D) mesoporous and interconnected nanoparticles (NPs) enriched composite Co3O4-CuO nanofibers (NFs) in the ratio Co:Cu = 1/4 (Co3O4-CuO NFs) composite have been synthesized by electrospinning and calcination of mixed polymeric template. Not merely the mesoporous composite Co3O4-CuO NFs but also single mesoporous Co3O4 NFs and CuO NFs have been produced for comparison. The choice of mixed polymer templates such as polyvinylpyrrolidone (PVP) and polyethylene glycol (PEG) for electrospinning is responsible for the formation of 1D mesoporous NFs. The HR-TEM result showed evolution of interconnected nanoparticles (NPs) and creation of mesoporosity in all electrospun NFs. The quantum confinement is due to NPs within NFs and has been proved by the surface-enhanced Raman scattering (SERS) study and the UV-vis-NRI diffuse reflectance spectra (DRS). The high intense photoluminescence (PL) spectra showing blue shift of all NFs also confirmed the quantum confinement phenomena. The lowering of PL spectrum after mixing of CuO in Co3O4 nanofibers framework (Co3O4-CuO NFs) proved CuO as an efficient visible light response low cost cocatalyst/charge separator. The red shifting of the band gap in composite Co3O4-CuO NFs is due to the internal charge transfer between Co2+ to Co3+ and Cu2+, proved by UV-vis absorption spectroscopy. Creation of oxygen vacancies by mixing of CuO and Co3O4 also prevents the electron-hole recombination and enhances the photocatalytic activity in composite Co3O4-CuO NFs. The photocurrent density, Mott-Schottky (MS), and electrochemical impedance spectroscopy (EIS) studies of all NFs favor the high photocatalytic performance. The mesoporous composite Co3O4-CuO NFs exhibits high photocatalytic activity toward phenolic compounds degradation as compared to the other two NFs (Co3O4 NFs and CuO NFs). The kinetic study of phenolic compounds followed first order rate equation. The high photocatalytic activity of composite Co3O4-CuO NFs is attributed to the formation of mesoporosity and interconnected NPs within NFs framework, quantum confinement, extended light absorption property, internal charge transfer, and effective photogenerated charge separations.
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Affiliation(s)
- Amaresh C Pradhan
- Institute of Materials Science & Nanotechnology, UNAM-National Nanotechnology Research Center, Bilkent University , Ankara, 06800, Turkey
| | - Tamer Uyar
- Institute of Materials Science & Nanotechnology, UNAM-National Nanotechnology Research Center, Bilkent University , Ankara, 06800, Turkey
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Pradhan AC, Senthamizhan A, Uyar T. Electrospun Mesoporous Composite CuO−Co3O4/N- TiO2 Nanofibers as Efficient Visible Light Photocatalysts. ChemistrySelect 2017. [DOI: 10.1002/slct.201701699] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Amaresh C. Pradhan
- Institute of Materials Science & Nanotechnology; UNAM-National Nanotechnology Research Center, Bilkent University; Ankara 06800 Turkey
| | - Anitha Senthamizhan
- Institute of Materials Science & Nanotechnology; UNAM-National Nanotechnology Research Center, Bilkent University; Ankara 06800 Turkey
| | - Tamer Uyar
- Institute of Materials Science & Nanotechnology; UNAM-National Nanotechnology Research Center, Bilkent University; Ankara 06800 Turkey
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He X, Yang C, Wang D, Gilliland III SE, Chen DR, Wang WN. Facile synthesis of ZnO@ZIF core–shell nanofibers: crystal growth and gas adsorption. CrystEngComm 2017. [DOI: 10.1039/c7ce00368d] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Ranjith KS, Senthamizhan A, Balusamy B, Uyar T. Nanograined surface shell wall controlled ZnO–ZnS core–shell nanofibers and their shell wall thickness dependent visible photocatalytic properties. Catal Sci Technol 2017. [DOI: 10.1039/c6cy02556k] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The core–shell form of ZnO–ZnS based heterostructural nanofibers (NF) has received increased attention for use as a photocatalyst owing to its potential for outstanding performance under visible irradiation.
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Affiliation(s)
| | - Anitha Senthamizhan
- UNAM – National Nanotechnology Research Center
- Bilkent University
- Ankara
- Turkey
| | - Brabu Balusamy
- UNAM – National Nanotechnology Research Center
- Bilkent University
- Ankara
- Turkey
| | - Tamer Uyar
- UNAM – National Nanotechnology Research Center
- Bilkent University
- Ankara
- Turkey
- Institute of Materials Science & Nanotechnology
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Arslan O, Topuz F, Eren H, Biyikli N, Uyar T. Pd nanocube decoration onto flexible nanofibrous mats of core–shell polymer–ZnO nanofibers for visible light photocatalysis. NEW J CHEM 2017. [DOI: 10.1039/c7nj00187h] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Plasmonic enhancement for electron–hole separation efficiency and visible light photocatalysis was achieved by Pd nanocube decoration on a ZnO nanolayer coated onto electrospun polymeric (polyacrylonitrile (PAN)) nanofibers.
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Affiliation(s)
- Osman Arslan
- UNAM-National Nanotechnology Research Center
- Bilkent University
- Ankara
- Turkey
| | - Fuat Topuz
- UNAM-National Nanotechnology Research Center
- Bilkent University
- Ankara
- Turkey
| | - Hamit Eren
- Institute of Materials Science & Nanotechnology
- Bilkent University
- Ankara
- Turkey
| | - Necmi Biyikli
- Electrical and Computer Engineering Department
- Utah State University
- Logan
- USA
| | - Tamer Uyar
- UNAM-National Nanotechnology Research Center
- Bilkent University
- Ankara
- Turkey
- Institute of Materials Science & Nanotechnology
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