Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Johnson Kwame, Efavi"'
Autor:
Daniel Narh, Benjamin Sampson, Samuel Ocrah Junior, Gloria Pokuaa Manu, Benjamin Agyei-Tuffour, Emmanuel Nyankson, Johnson Kwame Efavi
Publikováno v:
Journal of Nanotechnology, Vol 2024 (2024)
The growing focus on green chemistry and its application in nanomaterials has sparked a desire to explore more efficient and environmentally friendly synthesis methods. In this work, Citrus sinensis peel extract was used to synthesize silver-titanium
Externí odkaz:
https://doaj.org/article/f54d96ea7991411c91f7549e5149ea73
Autor:
Bernard Owusu Asimeng, Ernest Emmanuel Obeng, Obed Obeng‐Gyasi, Niloofar Alipoormazandarani, Ebenezer Annan, Emmanuel Nyankson, Johnson Kwame Efavi, Elvis Kwason Tiburu, E. Johan Foster, Jan T. Czernuszka
Publikováno v:
International Journal of Ceramic Engineering & Science, Vol 4, Iss 1, Pp 38-46 (2022)
Abstract Carbonated hydroxyapatite (CHAp) material was prepared from calcite and phosphate‐containing solution using the wet chemical precipitation method. The CHAp material was used to remove methylene blue (MB) from simulated contaminated water a
Externí odkaz:
https://doaj.org/article/24e405b9a1494c21853db269cbd15e01
Autor:
Bismark Mensah, Boateng Onwona-Agyeman, Johnson Kwame Efavi, Ralph Abakah Ofor, Mawufemor Zigah, Joyce Koranteng, Maxwell Karikari, Frank Nsaful, Daniel Akwei Addo
Publikováno v:
International Journal of Polymer Science, Vol 2023 (2023)
For the first time, acrylonitrile–butadiene rubber (NBR)–graphene oxide (GO) and reduced graphene oxide (rGO) composites were prepared without cure activators: zinc oxide/stearic acid (ZnO/SA) and studied. The vulcanization characteristics of the
Externí odkaz:
https://doaj.org/article/843d61ce827f47a690cd498ff2f04edc
Publikováno v:
Heliyon, Vol 8, Iss 12, Pp e11974- (2022)
Ethylene-propylene grafted-maleic anhydride (EPR-g-MA) and a pure maleic anhydride (MA) were separately used to compound carboxylated acrylonitrile butadiene-rubber (XNBR) together with reduced graphene oxide (G) to form nanocomposites, by using melt
Externí odkaz:
https://doaj.org/article/d97ef524dc97466fb0f168883cefbc39
Autor:
Johnson Kwame Efavi, Emmanuel Nyankson, Kwaku Kyeremeh, Gloria Pokuaa Manu, Kingsford Asare, Nathaniel Yeboah
Publikováno v:
International Journal of Biomaterials, Vol 2022 (2022)
Silver nanoparticles (AgNPs) have been synthesized from the more chemically rich and diverse cocoa pod; the synthesis of silver nanoparticles from cocoa leaves, which are less rich and have low diversity in bioactive molecules, is yet to be achieved.
Externí odkaz:
https://doaj.org/article/c0fbbc81379e4ddfbaabac36e894cccc
Autor:
Emmanuel Nyankson, Jonas Adjasoo, Johnson Kwame Efavi, Abu Yaya, Gloria Manu, Asare Kingsford, Richard Yeboah Abrokwah
Publikováno v:
Scientific African, Vol 7, Iss , Pp - (2020)
Adsorption is an effective method for treating polluted water bodies. In this study, Zeolite/Cerium oxide nanocomposite (Z/CeO2NC) was hydrothermally synthesize and its adsorption capacity on methylene blue organic dye (MB) studied. The as-synthes
Externí odkaz:
https://doaj.org/article/c537eb9b60074c0ebb0d7fb6856caa3f
Autor:
Bernard Owusu Asimeng, Emmanuel Nyankson, Johnson Kwame Efavi, Amartey Nii Amarkai, Gloria Pokuaa Manu, Elvis Tiburu
Publikováno v:
International Journal of Biomaterials, Vol 2020 (2020)
Magnetic Fe3O4 nanoparticles were synthesized from maize leaves and plantain peels extract mediators. Particles were characterized, and the inhibitory effects were studied on HeLa cells in vitro using cyclic voltammetry (CV). Voltammograms from the C
Externí odkaz:
https://doaj.org/article/240082edc73547fe9c2f0b44e361fc57
Autor:
Emmanuel Nyankson, Benjamin Agyei-Tuffour, Ebenezer Annan, Abu Yaya, Bismark Mensah, Boateng Onwona-Agyeman, Reuben Amedalor, Benson Kwaku-Frimpong, Johnson Kwame Efavi
Publikováno v:
Heliyon, Vol 5, Iss 6, Pp e01969- (2019)
The release of water soluble dyes into the environment is an utmost concern in many countries. This paper presents the effects of Ag2CO3-halloysite composites on the efficient removal of water soluble dyes. In this study, NaHCO3 solution was added dr
Externí odkaz:
https://doaj.org/article/d2d8dc842197493cba16c7271dce9137
Autor:
Emmanuel Nyankson, Jonas Adjasoo, Johnson Kwame Efavi, Reuben Amedalor, Abu Yaya, Gloria Pokuaa Manu, Kingsford Asare, Nii Amarkai Amartey
Publikováno v:
Journal of Chemistry, Vol 2019 (2019)
In this work, zeolite (Z) and Z-Fe3O4 nanocomposite (Z-Fe3O4 NC) have been synthesized. The Fe3O4 nanoparticles were synthesized using the extract from maize leaves and ferric and ferrous chloride salts and encapsulated into the zeolite framework. Th
Externí odkaz:
https://doaj.org/article/5cde663d4d4e4e648bd0892b004585ce
Autor:
Emmanuel Nyankson, Benjamin Agyei-Tuffour, Jonas Adjasoo, Annan Ebenezer, David Dodoo-Arhin, Abu Yaya, Bismark Mensah, Johnson Kwame Efavi
Publikováno v:
Advances in Materials Science and Engineering, Vol 2019 (2019)
In this work, the potential application of TiO2-Fe-HNT photocatalyst-adsorbent composite in water treatment technologies was confirmed. The photocatalyst-adsorbent composite (TiO2-Fe-HNTs) was synthesized by the hydrothermal method and characterized
Externí odkaz:
https://doaj.org/article/f09cd78ec2ae4c659d229d5954eb9a81