Johnson Kwame Efavi profile image

Johnson Kwame Efavi

PROFESSOR

Verified email at ug.edu.gh Senior Lecturer University of Ghana Google Scholar

CollegeCOLLEGE OF BASIC & APPLIED SC.
School / InstituteSCHOOL OF ENGINEERING
DepartmentDEPARTMENT OF MATERIALS SCIENCE AND ENGINEERING
Ceramics Composites Nanomaterials Biomaterials
Publications

84

Citations

1,587

H-index

23

i10-index

41

Publication activity
Publication statistics
Average citations
18.9
Most cited paper
105
First publication year
1900
Latest publication year
2025
Last updated
14 Sep 2026, 10:27
Publications

84 matching publications

PublicationYearJournalThematic areaCitations
Modified halloysite nanoclay as a vehicle for sustained drug delivery
EG Bediako, E Nyankson, D Dodoo-Arhin, B Agyei-Tuffour, D Łukowiec, ...
2018 Heliyon 4 (7), 2018 Engineering 105
The effect of NaOH catalyst concentration and extraction time on the yield and properties of Citrullus vulgaris seed oil as a potential biodiesel feed stock
JK Efavi, D Dodoo-Arhin, D Kanbogtah, V Apalangya, E Nyankson, ...
2018 South African Journal of Chemical Engineering 25 (1), 98-102, 2018 Engineering 96
A Novel Computer Vision Model for Medicinal Plant Identification Using Log‐Gabor Filters and Deep Learning Algorithms
SO Oppong, F Twum, JB Hayfron-Acquah, YM Missah
2022 Computational Intelligence and Neuroscience 2022 (1), 1189509, 2022 Engineering 72
Characterization and Evaluation of Zeolite A/Fe3O4 Nanocomposite as a Potential Adsorbent for Removal of Organic Molecules from Wastewater
E Nyankson, J Adjasoo, JK Efavi, R Amedalor, A Yaya, GP Manu, K Asare, ...
2019 Journal of Chemistry 2019 (1), 8090756, 2019 Engineering 72
Synthesis and characterisation of zeolite-A and Zn-exchanged zeolite-A based on natural aluminosilicates and their potential applications
E Nyankson, JK Efavi, A Yaya, G Manu, K Asare, J Daafuor, RY Abrokwah
2018 Cogent Engineering 5 (1), 1440480, 2018 Engineering 71
CMOS integration of epitaxial Gd2O3 high-k gate dielectrics
HDB Gottlob, T Echtermeyer, T Mollenhauer, JK Efavi, M Schmidt, ...
2006 Solid-state electronics 50 (6), 979-985, 2006 Engineering 65
Nanoscale TiN metal gate technology for CMOS integration
MC Lemme, JK Efavi, T Mollenhauer, M Schmidt, HDB Gottlob, ...
2006 Microelectronic Engineering 83 (4-9), 1551-1554, 2006 Engineering 62
Synthesis and kinetic adsorption characteristics of Zeolite/CeO2 nanocomposite
E Nyankson, J Adjasoo, JK Efavi, A Yaya, G Manu, A Kingsford, ...
2020 Scientific African 7, e00257, 2020 Engineering 61
0.86-nm CET Gate Stacks With EpitaxialHigh-Dielectrics and FUSI NiSi Metal Electrodes
HDB Gottlob, T Echtermeyer, M Schmidt, T Mollenhauer, JK Efavi, ...
2006 IEEE electron device letters 27 (10), 814-816, 2006 Engineering 57
Synthesis of TiO2–Ag3PO4 photocatalyst material with high adsorption capacity and photocatalytic activity: application in the removal of dyes and pesticides
E Nyankson, JK Efavi, B Agyei-Tuffour, G Manu
2021 RSC advances 11 (28), 17032-17045, 2021 Engineering 55
Characterisation and identification of local kaolin clay from Ghana: A potential material for electroporcelain insulator fabrication
A Yaya, EK Tiburu, ME Vickers, JK Efavi, B Onwona-Agyeman, ...
2017 Applied Clay Science 150, 125-130, 2017 Engineering 53
Highly selective HBr etch process for fabrication of triple-gate nano-scale SOI-MOSFETs
MC Lemme, T Mollenhauer, H Gottlob, W Henschel, J Efavi, C Welch, ...
2004 Microelectronic engineering 73, 346-350, 2004 Engineering 48
Ghana’s Quest for Oil and Gas: Ecological Risks and Management Frameworks
RA P.A. Sakyi, J.K. Efavi, d. atta-Peters
2012 West African Journal of Applied Ecology 20 (1), 57-70, 2012 Natural Sciences 45
Highly selective etch process for silicon-on-insulator nano-devices
T Wahlbrink, T Mollenhauer, YM Georgiev, W Henschel, JK Efavi, ...
2005 Microelectronic Engineering 78, 212-217, 2005 Engineering 45
Ag2CO3-halloysite nanotubes composite with enhanced removal efficiency for water soluble dyes
E Nyankson, B Agyei-Tuffour, E Annan, A Yaya, B Mensah, ...
2019 Heliyon 5 (6), 2019 Engineering 43
Development of porous ceramic bodies from kaolin deposits for industrial applications
JK Efavi, L Damoah, DY Bensah, DD Arhin, D Tetteh
2012 Applied clay science 65, 31-36, 2012 Engineering 38
Introduction of crystalline high-k gate dielectrics in a CMOS process
HDB Gottlob, MC Lemme, T Mollenhauer, T Wahlbrink, JK Efavi, H Kurz, ...
2005 Journal of non-crystalline solids 351 (21-23), 1885-1889, 2005 Engineering 36
Industrial applications of clay materials from Ghana (a review)
ABU YAYA
2024 Oriental Journal of Chemistry, 2024 Engineering 32
Photocatalytic degradation of fractionated crude oil: potential application in oil spill remediation
B Agyei-Tuffour, S Gbogbo, D Dodoo-Arhin, LNW Damoah, JK Efavi, ...
2020 Cogent Engineering 7 (1), 1744944, 2020 Engineering 31
Curcumin loaded Ag–TiO2-halloysite nanotubes platform for combined chemo-photodynamic therapy treatment of cancer cells
E Nyankson, D Awuzah, EK Tiburu, JK Efavi, B Agyei-Tuffour, L Paemka
2022 RSC advances 12 (51), 33108-33123, 2022 Health Sciences 29
Synthesis and Application of Fe‐Doped TiO2‐Halloysite Nanotubes Composite and Their Potential Application in Water Treatment
E Nyankson, B Agyei-Tuffour, J Adjasoo, A Ebenezer, D Dodoo-Arhin, ...
2019 Advances in Materials Science and Engineering 2019 (1), 4270310, 2019 Engineering 29
Chitosan-coated halloysite nanotubes as vehicle for controlled drug delivery to MCF-7 cancer cells in vitro
E Nyankson, SO Aboagye, JK Efavi, B Agyei-Tuffour, L Paemka, ...
2021 Materials 14 (11), 2837, 2021 Health Sciences 28
Investigation of MOS capacitors and SOI–MOSFETs with epitaxial gadolinium oxide (Gd2O3) and titanium nitride (TiN) electrodes
T Echtermeyer, HDB Gottlob, T Wahlbrink, T Mollenhauer, M Schmidt, ...
2007 Solid-State Electronics 51 (4), 617-621, 2007 Engineering 24
Formation of chitosan nanoparticles using deacetylated chitin isolated from freshwater algae and locally synthesized zeolite A and their influence on cancer cell growth
EK Tiburu, A Salifu, EO Aidoo, HNA Fleischer, G Manu, A Yaya, H Zhou, ...
2017 Journal of Nano Research 48, 156-170, 2017 Health Sciences 23
Tungsten work function engineering for dual metal gate nano-CMOS
JK Efavi, T Mollenhauer, T Wahlbrink, HDB Gottlob, MC Lemme, H Kurz
2005 Journal of Materials Science: Materials in Electronics 16 (7), 433-436, 2005 Engineering 22