Modification of Electrospun CeO2 Nanofibers with CuCrO2 Particles Applied to Hydrogen Harvest from Steam Reforming of Methanol

Hsu, Kai-Chun; Yu, Chung‐Lun; Lei, Heng-Jyun; Sakthinathan, Subramanian; Chen, Po-Chou; Lin, Chia-Cheng; Chiu, Te‐Wei; Nagaraj, Karuppiah; Fan, Liangdong; Lee, Yi‐Hsuan

doi:10.3390/ma15248770

Cited by 4 publications

(5 citation statements)

References 33 publications

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“…The prepared CNF was collected and stored for a further electrochemical study. [40][41][42] GCE/CNF/Fe 2 WO 6 electrode preparation.-The GCE/CNF/Fe 2 WO 6 electrode was prepared using the following method. The prepared Fe 2 WO 6 (3 mg) was dissolved in DMF (10 ml) and added into the as-prepared CNF (1 mg) with sonicated for 30 min to form CNF/Fe 2 WO 6 composite.…”

Section: Preparation Of Carbon Nanofiber By Electrospinning Method-mentioning

confidence: 99%

Electrochemical Detection of Metronidazole by the Fabricated Composites of Orthorhombic Iron Tungsten Oxide Decorated with Carbon Nanofiber Composites Electrode

Mariappan

Alagarsamy

Chen

et al. 2023

J. Electrochem. Soc.

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Metronidazole (MTD) is a common antibiotic used to treat various pathogens and protozoal infections in humans and domestic animals. This drug is, however, prohibited in various countries owing to its extremely precarious properties. Hence, the low-limit detection of MTD in the environment is more important because it is very impactful and affects human health. Iron tungstate (Fe2WO6) has been produced by the hydrothermal method and the carbon nanofibers (CNF) prepared from the electrospinning technique. After that, CNF/Fe2WO6 composite decorated glassy carbon electrode (GCE) was used for the electrochemical detection of MTD. Here, the different physicochemical characterization studies were used to confirm the CNF/Fe2WO6 composite. Moreover, electrochemical impedance spectroscopy, cyclic voltammetry studies, and differential pulse voltammetry have been used for the electrochemical studies of modified electrodes. The electrochemical results of GCE/CNF/Fe2WO6 electrodes exhibited an excellent electrochemical response at -0.5 V. The MTD detection limit has been calculated by the very low detection limit concentrations (0.013 μM). Further, the GCE/CNF/Fe2WO6 electrodes performed at high sensitivity (1.55 μA μM−1 cm-2) with a wide linear range (0.01-1792 μM). Besides, the GCE/CNF/Fe2WO6 have excellent repeatability, reproducibility, stability, and real sample analysis performances.

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Section: Preparation Of Carbon Nanofiber By Electrospinning Method-mentioning

confidence: 99%

Electrochemical Detection of Metronidazole by the Fabricated Composites of Orthorhombic Iron Tungsten Oxide Decorated with Carbon Nanofiber Composites Electrode

Mariappan

Alagarsamy

Chen

et al. 2023

J. Electrochem. Soc.

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“…The remaining methanol vapor converts into water and carbon dioxide. Due to the high chemical activity of methanol, steam reformation can be carried out at a lower temperature [13,14]. In addition, methanol has many advantages because it has only one carbon atom, which can greatly reduce the reaction's byproducts.…”

Section: Introductionmentioning

confidence: 99%

ZnO-ZnFe2O4 Catalyst for Hydrogen Production from Methanol Steam Reforming

Hsu

Sakthinathan

et al. 2023

Catalysts

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In this study, ZnFe2O4 and ZnO-ZnFe2O4 catalysts were prepared using the glycine–nitrate process (GNP). The prepared ZnFe2O4 and ZnO-ZnFe2O4 catalyst powders were characterized using a scanning electron microscope, transmission electron microscope, XRD diffraction studies, and selected area diffraction pattern studies. In addition, the specific surface area was measured using a Brunauer–Emmett–Teller specific surface area analysis. The hydrogen reduction in different temperature ranges was analyzed using the H2 temperature-programmed reduction technique. The specific surface area of the ZnFe2O4 was 5.66 m2/g, and the specific surface area of the ZnO-ZnFe2O4 was 8.20 m2/g at a G/N ratio of 1.5 and at a G/N ratio of 1.7, respectively. The specific surface area of the ZnFe2O4 was 6.03 m2/g, and the specific surface area of the ZnO-ZnFe2O4 was 11.67 m2/g. The ZnFe2O4 and ZnO-ZnFe2O4 were found to have the best catalytic effect at 500 °C. In particular, the highest H2 generation rate of the ZnO-ZnFe2O4 (GN = 1.7) at 500 °C was 7745 mL STP min−1 g-cat−1. Moreover, the ZnO-ZnFe2 O4 catalyst demonstrated good H2 selectivity and stability during the process of steam reforming methanol. Therefore, the ZnO-ZnFe2O4 catalyst powder exhibited high catalytic activity due to the good dispersibility of the ZnO, which increased the specific surface area of the catalyst. In the future, the catalyst can be applied to the steam reforming of methanol for industrial purposes.

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“…The study of Hsu et al [ 9 ], focusing on the modification of electrospun CeO 2 nanofibers with CuCrO 2 particles applied to hydrogen harvest from steam reforming of methanol, was also included in this Special Issue. Hydrogen is an alternative renewable energy source for addressing the energy crisis and climate change.…”

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confidence: 99%

“…After the SiO 2 modification, the CeO 2 nanofibers were immersed in a Cu-Cr-O precursor and annealed in a vacuum to form CeO 2 -CuCrO 2 nanofibers. The specific surface area of the CeO 2 -CuCrO 2 nanofibers is 15.06 m 2 /g [ 9 ]. According to the findings, the increased hydrogen production rate can be ascribed to the stronger catalytic activity, larger surface area, lower reactor temperature, and higher methanol flow rate of the CeO 2 -CuCrO 2 nanofiber catalyst.…”

mentioning

confidence: 99%

“…According to the findings, the increased hydrogen production rate can be ascribed to the stronger catalytic activity, larger surface area, lower reactor temperature, and higher methanol flow rate of the CeO 2 -CuCrO 2 nanofiber catalyst. According to the H 2 production performance, the CeO 2 -CuCrO 2 nanofibers can be a better catalyst for commercial H 2 production and are suitable for fuel cell vehicles without high-temperature activation [ 9 ].…”

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confidence: 99%

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Synthesis, Physicochemical Characterization and Applications of Advanced Nanomaterials

Dippong

2023

Materials

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This Special Issue highlights the last decade’s progress regarding new nanostructured materials. In this regard, the development of nanoscale syntheses and innovative characterization tools that resulted in the tailored design of nanostructured materials with versatile abilities in many applications were investigated. Various types of engineered nanostructures, usually metal nanoparticles or nanoporous metal oxides, have been synthesized for various applications. This Special Issue covers the state-of-the-art of advanced nanoparticles in many disciplines (chemistry, pharmacy, nanomedicine, agriculture, catalysis, and environmental science). The crystallite sizes depended on the annealing temperature and type of doping ion. A combination of rigid and soft particles could simultaneously enhance both the tensile properties and the fracture toughness, which could not be achieved by the single-phase particles independently. The surface charge and in vitro corrosion resistance are key parameters characterizing biomaterials in the interaction of the implant with the biological environment. Solar energy in the presence of a photocatalyst can be effectively converted into electricity/fuel, break down chemical and microbial pollutants, and help water purification. The saturation magnetization, remanent magnetizations, coercivity, and anisotropy were found to depend on the doping ion, annealing temperature, and particle size. The efficiency of the photocatalysis reaction depends on several factors, including light absorption capacity/light intensity, the type of photocatalyst used, the concentration of a photocatalyst and contaminant particles, the pH of the reaction medium, etc. The variety of color pigments and coloring properties of the targeted application in the ceramic industry was also of interest.

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Modification of Electrospun CeO2 Nanofibers with CuCrO2 Particles Applied to Hydrogen Harvest from Steam Reforming of Methanol

Cited by 4 publications

References 33 publications

Electrochemical Detection of Metronidazole by the Fabricated Composites of Orthorhombic Iron Tungsten Oxide Decorated with Carbon Nanofiber Composites Electrode

Electrochemical Detection of Metronidazole by the Fabricated Composites of Orthorhombic Iron Tungsten Oxide Decorated with Carbon Nanofiber Composites Electrode

ZnO-ZnFe2O4 Catalyst for Hydrogen Production from Methanol Steam Reforming

Synthesis, Physicochemical Characterization and Applications of Advanced Nanomaterials

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