Local structure and superconductivity in (Bi1.6Pb0.4Sr2Ca2Cu3O10+δ)1-x(Fe3O4)x compounds

Pham, An T.; Pham, H.; Nguyen, Nhung T.; Nam, Nguyễn Hoàng; Man, Nguyen Khac; Kang, W. N.; Hsu, I‐Jui; Klysubun, Wantana; Tran, Duc H.

doi:10.1016/j.ceramint.2021.02.267

Cited by 10 publications

(5 citation statements)

References 38 publications

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“…The energy difference between Cu 2+ and Cu + was found around 3.4 eV, which well agreed with other studies 27,28 . Then, the valence state of Cu ions of the modified TFC‐PA‐ g ‐PEG‐CuNP membrane can be calculated to be 1.3, indicated that all Cu ions present in this membrane were Cu + ions.…”

Section: Resultssupporting

confidence: 90%

“…The energy difference between Cu 2+ and Cu + was found around 3.4 eV, which well agreed with other studies. 27,28 Then, the valence state of Cu ions of the modified TFC-PA-g-PEG-CuNP membrane can be calculated to be 1.3, indicated that all Cu ions present in this membrane were Cu + ions. This result was due to Cu being a metal that was easily oxidized in the air to Cu + or Cu 2+ ions (relatively low reduction potential of Cu 0 /Cu 2+ ).…”

Section: Xas Spectroscopymentioning

confidence: 99%

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Improvement in anti‐biofouling property of polyamide thin‐film composite membranes by using copper nanoparticles

Ngo

Nguyen

et al. 2022

J of Applied Polymer Sci

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Membrane biofouling is a major problem of the membrane process owing to microbial growth and biofilm on the membrane surface. In this work, a thin‐film composite polyamide membrane was modified with poly(ethylene glycol) and copper nanoparticles. Results demonstrated that surface modification induced changes in membrane‐surface characteristics and enhanced filtration property. The membrane surfaces became more hydrophilic (decreased water contact angle from around 48° to 28°) and had better antibacterial properties than the original ones. The separation property of modified membranes improved, increasing the membrane flux (up to 40%) and antifouling property simultaneously. In particular, the maintained flux ratio (anti‐biofouling property) significantly increased after 4 days of immersing the membranes in Escherichia coli bacterial solution. The membranes were then used for filtration tests with different foulants, such as humic acid and bovine serum albumin solutions.

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Section: Resultssupporting

confidence: 90%

Section: Xas Spectroscopymentioning

confidence: 99%

Improvement in anti‐biofouling property of polyamide thin‐film composite membranes by using copper nanoparticles

Ngo

Nguyen

et al. 2022

J of Applied Polymer Sci

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“…Second, variations in ionic radius may affect lattice properties. [13,14,23]. The topic of discussion pertains to the concept of electrical resistivity denoted by the symbol ρ.The temperature dependence of the electrical resistivity of a (Bi 2 Sr 2-x Y x Ca 2 Cu 3-y Ni y O 10+δ ) sample with varying values of y (0, 0.03, and 0.12) is illustrated in Figure 3.…”

Section: Discussion and Resultsmentioning

confidence: 99%

Studying the effect partial Ni2O3 nano-particles compensation on the properties of the compound Bi2Sr2-xYxCa2Cu3-yNiyO10+δ superconductors

Ahmad,

Ali,

Mahdi

2023

JOR

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Partial compensation Ni2O3 nanoparticles have been considered in relation to their effects on the structure, electric, morphology, and composition of Bi-2223. X-ray diffraction was used to quantify structural characteristics, and the results showed that all of the crystals in the samples are orthorhombic, with the ratio at which the Bi-2223 phase develops increasing The constancy of the lattice along the c-axis was observed. The trend that has been observed suggests that there is a direct proportionality between the concentration of Ni2O3 and the magnitude of the increase. Suggestive of a high-temperature superconductor (Bi2Sr2-xYxCa2Cu3-yNiyO10+δ) composition, where y=0=0.03=0.12 Thanks to 3D AFM, the morphology of the surface has been thoroughly studied. The test specimens showed good crystalline structure and a smooth, uniform surface. We measured Tc with 4 separate probes. The maximum temperature constant (Tc) was measured to be 143 K at y=0.12.

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“…Together with this, the layered structure, as well as the weakly coupled peculiarity of BSCCO samples, enable substitution, doping, and/or addition of various elements [18][19][20][21][22][23][24][25][26][27][28][29]. However, according to recent literature, the doping and/or substitution effect did not give a positive result except for a few oxide compounds such as PbO, SbO, and AgO, which act as flux agents in the structure and reduce the impurity phase formation, especially at the grain boundaries.…”

Section: Introductionmentioning

confidence: 98%

Role of Multi-Walled Carbon Nanotube Addition in Superconducting Properties of Bi₂Sr₂CaCu₂O_8+s Glass-Ceramic Superconductors

Yakinci

Çiçek

2023

Acta Phys. Pol. A

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In this work, pure and with 1, 3, 5, 10, and 15 wt% multi-walled carbon nanotube addition Bi2Sr2CaCu2O8+s glass-ceramic materials have been investigated in terms of thermal, structural, microstructural, electrical, and magnetic properties. Multi-walled carbon nanotubes with a purity of 96% were used to enhance electrical transport properties. Thermal properties have been examined using differential thermal analysis. According to the differential thermal analysis, the multi-walled carbon nanotube addition reduced the melting temperature and slightly increased the crystallization activation energy of the BiSrCaCuO material. X-ray analyses showed that all samples have tetragonal symmetry and did not change with addition, but a small change in the c-axis is observed. Scanning electron microscope analyses showed no significant morphological change. The effect of the additive on the resistivity measurements was found to be limited, and zero resistance temperature increased up to a level of 5 wt% addition and then decreased drastically for higher addition cases. The hole concentration of the samples was calculated, and it was found that there was a shift towards the over-doped region with the addition. For the transport critical current density measurements, the highest increase of about 30% was obtained for the sample with 5 wt% multi-walled carbon nanotube addition, but in high addition cases, significant losses were obtained. A similar situation occurred in magnetization versus magnetic field measurements, and the highest magnetization critical current density value obtained ẘas 4.1 × 10 6 A/cm 2 at 4.2 K in the 5 wt% multi-wall carbon nanotube added sample. topics: multi-wall carbon nanotube, high-temperature superconductors, BSCCO glass-ceramic, BSCCO superconductors

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Local structure and superconductivity in (Bi1.6Pb0.4Sr2Ca2Cu3O10+δ)1-x(Fe3O4)x compounds

Cited by 10 publications

References 38 publications

Improvement in anti‐biofouling property of polyamide thin‐film composite membranes by using copper nanoparticles

Improvement in anti‐biofouling property of polyamide thin‐film composite membranes by using copper nanoparticles

Studying the effect partial Ni2O3 nano-particles compensation on the properties of the compound Bi2Sr2-xYxCa2Cu3-yNiyO10+δ superconductors

Role of Multi-Walled Carbon Nanotube Addition in Superconducting Properties of Bi₂Sr₂CaCu₂O_8+s Glass-Ceramic Superconductors

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Local structure and superconductivity in (Bi1.6Pb0.4Sr2Ca2Cu3O10+δ)1-x(Fe3O4)x compounds

Cited by 10 publications

References 38 publications

Improvement in anti‐biofouling property of polyamide thin‐film composite membranes by using copper nanoparticles

Improvement in anti‐biofouling property of polyamide thin‐film composite membranes by using copper nanoparticles

Studying the effect partial Ni2O3 nano-particles compensation on the properties of the compound Bi2Sr2-xYxCa2Cu3-yNiyO10+δ superconductors

Role of Multi-Walled Carbon Nanotube Addition in Superconducting Properties of Bi2Sr2CaCu2O8+s Glass-Ceramic Superconductors

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Product

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Role of Multi-Walled Carbon Nanotube Addition in Superconducting Properties of Bi₂Sr₂CaCu₂O_8+s Glass-Ceramic Superconductors