Zobrazeno 1 - 10
of 209
pro vyhledávání: '"Zein K. Heiba"'
Publikováno v:
Results in Physics, Vol 56, Iss , Pp 107323- (2024)
Herein, polymethyl methacrylate (PMMA)/ polyethylene oxide (PEO) blend doped with nanocomposite (1 − x) ZnMn2O4/xCdS samples were prepared through two steps, the first comprising nanocomposite (1 − x) ZnMn2O4/xCdS samples synthesizing, while the
Externí odkaz:
https://doaj.org/article/3eab905fe1264800b44ddc1ee46d92e9
Autor:
A. M. El-naggar, Alaa Alsaggaf, Zein K. Heiba, A. M. Kamal, A. M. Aldhafiri, Mohamed Bakr Mohamed
Publikováno v:
Journal of Taibah University for Science, Vol 17, Iss 1 (2023)
Polyvinyl alcohol (PVA)/0.25% polyaniline (PANi)/x wt % MWCNTs (x = 0, 0.1, 0.2, 0.5, 0.8, 1) blends were formed. The X-ray diffraction technique was used to investigate the formation of the different blends. The effects of the MWCNTs amounts on the
Externí odkaz:
https://doaj.org/article/6a93cc36cd574d0387d8027ded6d7a07
Autor:
A. M. El-naggar, Zein K. Heiba, A. M. Kamal, Khalid E. Alzahrani, Omar H. Abd-Elkader, Mohamed Bakr Mohamed
Publikováno v:
Journal of Taibah University for Science, Vol 17, Iss 1 (2023)
Undoped and doped polyvinyl pyrrolidone/ carboxymethyl cellulose (PVP/CMC: 50/50%) blended polymers with melanin were formed. X-ray diffraction analysis confirmed the amorphous nature of all blends. Scanning electron microscopy results confirmed the
Externí odkaz:
https://doaj.org/article/5fe5b271964c46b79c5cf7df023f48a2
Publikováno v:
Journal of Taibah University for Science, Vol 16, Iss 1, Pp 174-182 (2022)
Nano Zn0.75−xMnxCd0.25S (x = 0, 0.05. 0.1, 0.15) doped PVA/PEG (7:3) polymer blend was fabricated . X-ray diffraction and scanning electron microscope techniques were used to investigate the possible formed phases in the nanofiller samples, and the
Externí odkaz:
https://doaj.org/article/70f7552de67b4a9a8cf67df366d1604c
Publikováno v:
Alexandria Engineering Journal, Vol 61, Iss 5, Pp 3375-3383 (2022)
Nano gadolinium oxide doped polyvinyl alcohol/polyethylene glycol blend (PVA/PEG) was prepared by sol–gel and casting methods. Rietveld refinement method was used for structural and microstructural investigation. The X-ray diffraction (XRD), scanni
Externí odkaz:
https://doaj.org/article/21a5b48de6d84e5f96a259e91ddc876b
Autor:
A. M. El-Naggar, Shadia Z. Brnawi, A. M. Kamal, A. A. Albassam, Zein K. Heiba, Mohamed Bakr Mohamed
Publikováno v:
Polymers, Vol 15, Iss 12, p 2661 (2023)
The 70% polyvinyl alcohol/30% polyvinyl pyrrolidone (PVA/PVP) polymer blends, with different weight ratios of tetrapropylammonium iodide (TPAI) or tetrahexylammonium iodide (THAI) salt, were prepared using dimethyl sulfoxide (DMSO) as a solvent. The
Externí odkaz:
https://doaj.org/article/3fcf653d016b4b8caf09768698424c78
Autor:
A.M. El-naggar, M.M. Osman, Zein K. Heiba, Mohamed Bakr Mohamed, A.M. Kamal, A.M. Aldhafiri, Eman A. Alghamdi
Publikováno v:
Journal of Materials Research and Technology, Vol 14, Iss , Pp 287-297 (2021)
Methylammonium lead iodide perovskites (MAPbI3) thin films were prepared by changing the molarity concentration of methylammonium iodide and lead iodide in the N,N- dimethylformamide solvent, with and without chlorobenzene (CB). Rietveld refinement a
Externí odkaz:
https://doaj.org/article/1f36d7c308a94736b4c4d76fd2a0a5b3
Publikováno v:
Polymers, Vol 15, Iss 9, p 2091 (2023)
The most efficient way to create novel materials that may be used in a variety of optoelectronic applications is thought to be doped mixed polymers with appropriate fillers. Undoped and doped PVC polymers with ZnS/Mn formed at different temperatures
Externí odkaz:
https://doaj.org/article/0cb98e6e477e422481ccf08ad803d84a
Publikováno v:
Journal of Materials Research and Technology, Vol 11, Iss , Pp 1480-1489 (2021)
Nano (Mg1-xZnx)[Fe2-2x Mn2x]O4 solid solution was synthesized by a simple chemical route. The obtained samples were fully characterized utilizing Rietveld x-ray diffraction analysis, Fourier transform infrared (FTIR), high resolution transmission ele
Externí odkaz:
https://doaj.org/article/c1b46c79b5f04194abe36b3c43ef7c0a
Autor:
Zein K. Heiba, Noura M. Farag, A.M. El-naggar, Mahmoud Abdellatief, A.M. Aldhafiri, Mohamed Bakr Mohamed
Publikováno v:
Journal of Materials Research and Technology, Vol 10, Iss , Pp 832-839 (2021)
The changes in the properties of the supercapacitor electrode material copper cobaltite, prepared by a simple hydrothermal procedure, were investigated upon doping with Mo with different ratios (CuCo1-xMoxO4, x = 0.0, 0.1, 0.2). The effect of doping
Externí odkaz:
https://doaj.org/article/c96f1f04b3694db8bcf3f8e79d3964ea