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- 저자 : Aman Salma (검색결과 3 건)
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Alenad Asma M.,Aman Salma,Ahmad Naseeb,Rashid Abdul Rasheed,Abid Abdul Ghafoor,Manzoor Sumaira,Nisa Mehar Un,Messali Mouslim,Alzahrani Huda A.,Taha Taha Abdel Mohaymen 한국세라믹학회 2024 한국세라믹학회지 Vol.61 No.1
The next generation of lightweight, flexible electronic equipment allows mechanical bending compatible with roll-to-roll technologies. In a novel method, a hydrothermal, wide potential is applied for the synthesis of samarium selenide–multiwalled carbon nanotubes (SmSe2–MWCNT) composite material. The chemical and physical characteristics for SmSe2–MWCNT are investigated with electrochemical assessments and X-ray diffraction (XRD) as well as via scanning electron microscopy (SEM). Under alkaline conditions, the SmSe2/MWCNT electrocatalyst shows a good activity for oxygen evolution reaction (OER). SmSe2–MWCNT nanocomposites appear to be good OER candidates in alkaline environments because of high ratio of catalytically active sites and faster electron movement, which increased the material’s conductivity, with current density, overpotential, and Tafel slope of 10 mA cm−2, 315 mV, and 73 mV dec−1, respectively, and displayed decent stability of 20 h via chronoamperometry test. The findings demonstrate that the SmSe2–MWCNT electrode could be employed as a potential candidate for hydrogen production.
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Facile fabrication of ternary CuO/CuS/ZnS for photodegradation of methylene blue
Abudllah Muhammad,Al Huwayz Maryam,Alwadai Norah,Manzoor Sumaira,Nisa Mehar Un,John Peter,Ghori Muhammad Ishfaq,Aman Salma,Al-Buriahi M. S.,Ashiq Muhammad Naeem 한국세라믹학회 2023 한국세라믹학회지 Vol.60 No.3
Synthetic dyes play a vital role in our daily life because they are utilized in products ranging from clothing to leather acces- sories. Unfortunately, these carcinogenic dyes are discharged into water streams any prior process considering the health problems in aquatic life and human beings. It is mandatory to separate noxious materials from wastewater. Semiconductors are viewed as a viable possibility for photocatalytic mineralization of noxious dyes. Herein, facile in situ hydrothermal approach (HT) was utilized for the fabrication of CuO, CuS ZnS, and their ternary CuO/CuS/ZnS nanocomposite. The fab- ricated CuO/CuS/ZnS nanocomposites were analysed through powder X-ray diff raction (PXRD), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscope equipped with energy-dispersive X-ray (SEM–EDX), and ultraviolet– visible spectroscopy (UV–Vis). Moreover, the optical investigation manifested the bandgap energy value of copper oxide, copper sulphides, zinc sulphides, and ternary CuO/CuS/ZnS nanocomposite, corresponding to 2.63, 3.1, 4.51, and 2.2 eV, respectively, which was estimated from absorption spectrum. Subsequently, the photocatalytic results of CuO, CuS, ZnS, and ternary CuO/CuS/ZnS nanocomposite against methylene blue (MB) dye were 71%, 42%, 45%, and 96%, respectively. The photocatalytic scheme showed the role of hydroxyl radicals and electrons in the photodegradation reaction. Our fi nding suggests that the fabricated nanocomposite shows superior photocatalytic efficiency towards mineralization of methylene blue which can be used for commercial applications.
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The electrical, dielectric and magnetic effect of MgFe2O4–polypyrrole and its composites
Alburaih H. A.,Khan Sajjad Ahmad,Khosa Rabia Yasmin,Ejaz Syeda Rabia,Khan Abdul Rauf,Muhammad Ghulam,Waheed Muhammad Suleman,Chughtai Adeel Hussain,Manzoor Sumaira,Aman Salma 한국세라믹학회 2023 한국세라믹학회지 Vol.60 No.2
In the modern world of health and life sciences, the utilization of nanoscale materials, particularly magnetic nanoparticles, is a hot topic. Here in the present study, MgFe2O4 is synthesized via the chemical co-precipitation technique, and the polypyrrole (PPy) is fabricated via in situ polymerization technique to form the MgFe2O4/PPy nanocomposite by varying its content in the ferrite material. The electrical, magnetic, and dielectric properties of the fabricated materials were studied to investigate their applications in electronic devices. The magnetization saturation Ms, remanence Mr and coercivity Hc increase with the addition of ferrite material. The activation of the fabricated material increases from 0.11 to 0.34 eV, indicating the increase in electrical resistivity. The other important parameters such as squareness ratio and drift mobility were also calculated. The increment in DC electrical resistivity, saturation magnetic magnetization and remanence as well as reduction in dielectric constant values with the ferrite material addition in the polypyrrole suggest that the materials can be beneficial for recording media as well as high-frequency devices.
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