Akrajas Ali Umar
Akrajas Ali Umar
Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia
Verified email at ukm.edu.my
TitleCited byYear
Preparation of a highly porous binderless activated carbon monolith from rubber wood sawdust by a multi-step activation process for application in supercapacitors
E Taer, M Deraman, IA Talib, A Awitdrus, SA Hashmi, AA Umar
Int. J. Electrochem. Sci 6 (8), 3301-3315, 2011
1312011
Advanced nanomaterials
KE Geckeler, H Nishide
Wiley-VCH, 2010
1162010
Second order optical effects in Au nanoparticle-deposited ZnO nanocrystallite films
K Ozga, T Kawaharamura, AA Umar, M Oyama, K Nouneh, A Slezak, ...
Nanotechnology 19 (18), 185709, 2008
942008
Formation of gold nanoplates on indium tin oxide surface: two-dimensional crystal growth from gold nanoseed particles in the presence of poly (vinylpyrrolidone)
A Ali Umar, M Oyama
Crystal growth & design 6 (4), 818-821, 2006
932006
Enriching the selectivity of metalloporphyrins chemical sensors by means of optical technique
MY Akrajas, Muhamad Mat Salleh
Sensors and Actuators B 85, 191-196, 2002
812002
Nonlinear optical properties of Au nanoparticles on indium–tin oxide substrate
IV Kityk, J Ebothe, I Fuks-Janczarek, AA Umar, K Kobayashi, M Oyama, ...
Nanotechnology 16 (9), 1687, 2005
732005
Physical, electrochemical and supercapacitive properties of activated carbon pellets from pre-carbonized rubber wood sawdust by CO2 activation
E Taer, M Deraman, IA Talib, AA Umar, M Oyama, RM Yunus
Current Applied Physics 10 (4), 1071-1075, 2010
712010
Direct growth of oriented ZnO nanotubes by self-selective etching at lower temperature for photo-electrochemical (PEC) solar cell application
L Roza, MYA Rahman, AA Umar, MM Salleh
Journal of Alloys and Compounds 618, 153-158, 2015
652015
Growth of high-density gold nanoparticles on an indium tin oxide surface prepared using a “touch” seed-mediated growth technique
A Ali Umar, M Oyama
Crystal growth & design 5 (2), 599-607, 2005
612005
A seed-mediated growth method for vertical array of single-crystalline CuO nanowires on surfaces
AA Umar, M Oyama
Crystal Growth and Design 7 (12), 2404-2409, 2007
572007
Formation of high-yield gold nanoplates on the surface: effective two-dimensional crystal growth of nanoseed in the presence of poly (vinylpyrrolidone) and …
AA Umar, M Oyama, MM Salleh, BY Majlis
Crystal Growth and Design 9 (6), 2835-2840, 2009
532009
Growth of platinum nanoparticles on stainless steel 316L current collectors to improve carbon-based supercapacitor performance
E Taer, M Deraman, IA Talib, SA Hashmi, AA Umar
Electrochimica Acta 56 (27), 10217-10222, 2011
522011
High-yield synthesis of tetrahedral-like gold nanotripods using an aqueous binary mixture of cetyltrimethylammonium bromide and hexamethylenetetramine
A Ali Umar, M Oyama
Crystal Growth and Design 9 (2), 1146-1152, 2008
472008
Microwave-assisted hydrolysis preparation of highly crystalline ZnO nanorod array for room temperature photoluminescence-based CO gas sensor
TS Tee, TC Hui, CW Yi, YC Chin, AA Umar, GR Titian, LH Beng, LK Sing, ...
Sensors and Actuators B: Chemical 227, 304-312, 2016
462016
Influence of optical band gap and particle size on the catalytic properties of Sm/SnO2–TiO2 nanoparticles
S Javaid, MA Farrukh, I Muneer, M Shahid, M Khaleeq-ur-Rahman, ...
Superlattices and Microstructures 82, 234-247, 2015
412015
Poriferous microtablet of anatase TiO2 growth on an ITO surface for high-efficiency dye-sensitized solar cells
AA Umar, S Nafisah, SKM Saad, ST Tan, A Balouch, MM Salleh, ...
Solar energy materials and solar cells 122, 174-182, 2014
402014
ZnO nanocubes with (1 0 1) basal plane photocatalyst prepared via a low-frequency ultrasonic assisted hydrolysis process
ST Tan, AA Umar, A Balouch, M Yahaya, CC Yap, MM Salleh, M Oyama
Ultrasonics sonochemistry 21 (2), 754-760, 2014
402014
Mn-doping-induced photocatalytic activity enhancement of ZnO nanorods prepared on glass substrates
NA Putri, V Fauzia, S Iwan, L Roza, AA Umar, S Budi
Applied Surface Science 439, 285-297, 2018
392018
A cast seed-mediated growth method for preparing gold nanoparticle-attached indium tin oxide surfaces
AA Umar, M Oyama
Applied Surface Science 253 (4), 2196-2202, 2006
362006
Efficient heterogeneous catalytic hydrogenation of acetone to isopropanol on semihollow and porous palladium nanocatalyst
A Balouch, A Ali Umar, AA Shah, M Mat Salleh, M Oyama
ACS applied materials & interfaces 5 (19), 9843-9849, 2013
352013
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