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Kushnir SE, Devyanina NP, Roslyakov IV, Lyskov NV, Stolyarov VS, Napolskii KS. Stained Glass Effect in Anodic Aluminum Oxide Formed in Selenic Acid. J Phys Chem Lett 2024; 15:298-306. [PMID: 38166418 DOI: 10.1021/acs.jpclett.3c03287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2024]
Abstract
A combination of the unique porous structure and physical and chemical properties of anodic aluminum oxide (AAO) makes it widely used in cutting-edge areas of materials science and nanotechnology. Selenic acid electrolyte provides the ability to obtain AAO with low porosity and high optical transparency and thus is promising for the preparation of AAO photonic crystals (PhCs). Here, we show the influence of crystallographic orientation of Al on the electrochemical oxidation rate in 1 M H2SeO4 as well as on the growth rate, porosity, and the effective refractive index of AAO. The cyclic anodization regime is used to prepare AAO PhCs with photonic band gaps, their wavelength positions are used to measure the AAO growth rate. At an anodization voltage of 40-45 V, the growth rate varies by up to 22.6% with crystallographic orientation of Al grains, causing the stained glass effect, which can be seen with the naked eye.
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Affiliation(s)
| | | | | | - Nikolay V Lyskov
- Federal Research Center of Problems of Chemical Physics and Medical Chemistry RAS, Chernogolovka, Moscow region 142432, Russia
| | - Vasily S Stolyarov
- Donostia International Physics Center (DIPC), 20018 Donostia-San Sebastián, Spain
- LPEM, ESPCI Paris, PSL Research University, CNRS, 75005 Paris, France
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Alouani MA, Casanova-Cháfer J, Güell F, Peña-Martín E, Ruiz-Martínez-Alcocer S, de Bernardi-Martín S, García-Gómez A, Vilanova X, Llobet E. ZnO-Loaded Graphene for NO 2 Gas Sensing. SENSORS (BASEL, SWITZERLAND) 2023; 23:6055. [PMID: 37447904 DOI: 10.3390/s23136055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 04/26/2023] [Accepted: 06/27/2023] [Indexed: 07/15/2023]
Abstract
This paper investigates the effect of decorating graphene with zinc oxide (ZnO) nanoparticles (NPs) for the detection of NO2. In this regard, two graphene sensors with different ZnO loadings of 5 wt.% and 20 wt.% were prepared, and their responses towards NO2 at room temperature and different conditions were compared. The experimental results demonstrate that the graphene loaded with 5 wt.% ZnO NPs (G95/5) shows better performance at detecting low concentrations of the target gas than the one loaded with 20 wt.% ZnO NPs (G80/20). Moreover, measurements under dry and humid conditions of the G95/5 sensor revealed that the material is very sensitive to ambient moisture, showing an almost eight-fold increase in NO2 sensitivity when the background changes from dry to 70% relative humidity. Regarding sensor selectivity, it presents a significant selectivity towards NO2 compared to other gas compounds.
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Affiliation(s)
- Mohamed Ayoub Alouani
- Microsystems Nanotechnologies for Chemical Analysis (MINOS), Universitat Rovira i Virgili, Avda. Països Catalans, 26, 43007 Tarragona, Spain
| | - Juan Casanova-Cháfer
- Microsystems Nanotechnologies for Chemical Analysis (MINOS), Universitat Rovira i Virgili, Avda. Països Catalans, 26, 43007 Tarragona, Spain
| | - Frank Güell
- Microsystems Nanotechnologies for Chemical Analysis (MINOS), Universitat Rovira i Virgili, Avda. Països Catalans, 26, 43007 Tarragona, Spain
- ENFOCAT-IN2UB, Universitat de Barcelona, C/Martí i Franquès 1, 08028 Barcelona, Spain
| | - Elisa Peña-Martín
- Gnanomat S.L. C/Faraday, 7. Parque Científico de Madrid, 28049 Madrid, Spain
| | | | | | | | - Xavier Vilanova
- Microsystems Nanotechnologies for Chemical Analysis (MINOS), Universitat Rovira i Virgili, Avda. Països Catalans, 26, 43007 Tarragona, Spain
| | - Eduard Llobet
- Microsystems Nanotechnologies for Chemical Analysis (MINOS), Universitat Rovira i Virgili, Avda. Països Catalans, 26, 43007 Tarragona, Spain
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Rohman YM, Sukowati R, Priyanto A, Hapidin DA, Edikresnha D, Khairurrijal K. Quartz Crystal Microbalance Coated with Polyacrylonitrile/Nickel Nanofibers for High-Performance Methanol Gas Detection. ACS OMEGA 2023; 8:13342-13351. [PMID: 37065082 PMCID: PMC10099416 DOI: 10.1021/acsomega.3c00760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 03/17/2023] [Indexed: 06/19/2023]
Abstract
This study describes a sensor based on quartz crystal microbalance (QCM) coated by polyacrylonitrile (PAN) nanofibers containing nickel nanoparticles for methanol gas detection. The PAN/nickel nanofibers composites were made via electrospinning and electrospray methods. The QCM sensors coated with the PAN/nickel nanofiber composite were evaluated for their sensitivities, selectivities, and stabilities. The morphologies and elemental compositions of the sensors were examined using a scanning electron microscope-energy dispersive X-ray. A Fourier Transform Infrared spectrometer was used to investigate the elemental bonds within the nanofiber composites. The QCM sensors coated with PAN/nickel nanofibers offered a high specific surface area to enhance the QCM sensing performance. They exhibited excellent sensing characteristics, including a high sensitivity of 389.8 ± 3.8 Hz/SCCM, response and recovery times of 288 and 251 s, respectively, high selectivity for methanol compared to other gases, a limit of detection (LOD) of about 1.347 SCCM, and good long-term stability. The mechanism of methanol gas adsorption by the PAN/nickel nanofibers can be attributed to intermolecular interactions, such as the Lewis acid-base reaction by PAN nanofibers and hydrogen bonding by nickel nanoparticles. The results suggest that QCM-coated PAN/nickel nanofiber composites show great potential for the design of highly sensitive and selective methanol gas sensors.
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Affiliation(s)
- Yadi Mulyadi Rohman
- Department
of Physics, Faculty of Mathematics and Naturals Sciences, Institut Teknologi Bandung, Jalan Ganesa 10, Bandung, West Java 40132, Indonesia
| | - Riris Sukowati
- Department
of Physics, Faculty of Mathematics and Naturals Sciences, Institut Teknologi Bandung, Jalan Ganesa 10, Bandung, West Java 40132, Indonesia
| | - Aan Priyanto
- Department
of Physics, Faculty of Mathematics and Naturals Sciences, Institut Teknologi Bandung, Jalan Ganesa 10, Bandung, West Java 40132, Indonesia
- Doctoral
Program of Physics, Faculty of Mathematics and Naturals Sciences, Institut Teknologi Bandung, Jalan Ganesa 10, Bandung, West Java 40132, Indonesia
| | - Dian Ahmad Hapidin
- Department
of Physics, Faculty of Mathematics and Naturals Sciences, Institut Teknologi Bandung, Jalan Ganesa 10, Bandung, West Java 40132, Indonesia
| | - Dhewa Edikresnha
- Department
of Physics, Faculty of Mathematics and Naturals Sciences, Institut Teknologi Bandung, Jalan Ganesa 10, Bandung, West Java 40132, Indonesia
- Research
Center for Biosciences and Biotechnology, University Center of Excellence-Nutraceutical, Institut Teknologi
Bandung, Jalan Ganesa
10, Bandung, West Java 40132, Indonesia
| | - Khairurrijal Khairurrijal
- Department
of Physics, Faculty of Mathematics and Naturals Sciences, Institut Teknologi Bandung, Jalan Ganesa 10, Bandung, West Java 40132, Indonesia
- Research
Center for Biosciences and Biotechnology, University Center of Excellence-Nutraceutical, Institut Teknologi
Bandung, Jalan Ganesa
10, Bandung, West Java 40132, Indonesia
- Department
of Physics, Faculty of Science, Institut
Teknologi Sumatera, Jalan
Terusan Ryacudu, Way Huwi, Lampung 35365, Indonesia
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Yang Y, Wang X, Song Z, Zheng Y, Ji S. Proteomics and Metabolomics Analysis Reveals the Toxicity of ZnO Quantum Dots on Human SMMC-7721 Cells. Int J Nanomedicine 2023; 18:277-291. [PMID: 36683595 PMCID: PMC9851061 DOI: 10.2147/ijn.s389535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 12/09/2022] [Indexed: 01/15/2023] Open
Abstract
Purpose ZnO quantum dots (QDs) are composed of less toxic metals than other QDs but have the same interesting photochemical properties. Thus, they have received considerable attention recently. Nevertheless, their toxicity cannot be ignored. Methods In this study, we incubated ZnO QDs with human SMMC-7721 cells for 24 h to assess their nanotoxicity through proteomics (Fold change >1.5 and p-value <0.05) and metabolomics (Fold change ≥ 1.5; VIP ≥ 1; p-value < 0.05) analyses. Results Both of 174 and 219 significantly changed metabolites were identified in human SMMC-7721 cells treated with 20 and 50 µg/mL ZnO QDs, respectively. ZnO QDs significantly modified metabolic pathways, including purine metabolism, ferroptosis, morphine addiction, alcoholism, cGMP-PKG signaling, and Cushing syndrome. Moreover, we identified 105 and 8 differentially expressed proteins in cells treated with 20 and 50 µg/mL ZnO QDs, and the pathways of alcoholism and Cushing syndrome were enriched. Conclusion ZnO QDs did not affect cell viability in a CCK8 assay, but disturbed the level of intracellular metabolites and proteins at 20 µg/mL. The KEGG analyses of the metabolomics and proteomics data both enriched the alcoholism and Cushing syndrome pathways. These results provide an experimental basis for future research on the safe use of nanomaterials.
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Affiliation(s)
- Yanjie Yang
- Henan Provincial Engineering Center for Tumor Molecular Medicine, School of Basic Medical Sciences, Henan University, Kaifeng, 475004, People’s Republic of China
| | - Xu Wang
- Henan Provincial Engineering Center for Tumor Molecular Medicine, School of Basic Medical Sciences, Henan University, Kaifeng, 475004, People’s Republic of China
| | - Zhenhua Song
- Henan Provincial Engineering Center for Tumor Molecular Medicine, School of Basic Medical Sciences, Henan University, Kaifeng, 475004, People’s Republic of China
| | - Yafei Zheng
- Henan Provincial Engineering Center for Tumor Molecular Medicine, School of Basic Medical Sciences, Henan University, Kaifeng, 475004, People’s Republic of China
| | - Shaoping Ji
- Henan Provincial Engineering Center for Tumor Molecular Medicine, School of Basic Medical Sciences, Henan University, Kaifeng, 475004, People’s Republic of China,Correspondence: Shaoping Ji, School of Basic Medical Sciences, Henan University, Kaifeng, 475004, People’s Republic of China, Tel +86 371 2388 0585, Fax +86 371 2388 0585, Email
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