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Browsing by Author "Akande, Amos A"

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Blue- and red-shifts of V2O5 phonons in NH3 environment by in situ Raman spectroscopy

Author: Akande, Amos A ; Machatine, AGJ ; Masina, Bathusile N ; Chimowa, G ; Matsoso, B ; Roro, Kittessa T ; Duvenhage, M-M ; Swart, H ; Bandyopadhyay, J ; Ray, Suprakas S ; Mwakikunga, Bonex W Date: Jan 2018 A layer of ~30 nm V2O5/100 nm-SiO2 on Si was employed in the in situ Raman spectroscopy in the presence of NH3 effluent from a thermal decomposition of ammonium acetate salt with the salt heated at 100 °C. When the layer is placed at 25 °C, ... Read more
Effect of laser wavelength in PLD in the orientation and thermochromic properties of VO2 (M1) on a glass substrate

Author: Masina, Bathusile N ; Akande, Amos A ; Mwakikunga, Bonex W Date: Dec 2019 Highly oriented VO2 (M1) thin films are difficult to produce using non-crystalline substrates. For example, to produce such films on glass has required post-annealing or the use of a ZnO transparent layer. Here, we overcome this challenge and ... Read more
Effect of varying ethanol and water compositions on the acetone sensing properties of WO3 for application in diabetes mellitus monitoring

Author: Saasa, Valentine ; Lemmer, Yolandy ; Malwela, Thomas ; Akande, Amos A ; Beukes, M ; Mwakikunga, Bonex W Date: Mar 2020 Tungsten oxide based gas sensors have attracted a lot of attention in breath acetone analysis due to their potential in clinical diagnosis of diabetes. The major problem with this material in sensor application has been remarkable response ... Read more
Efficient synthesis of activated carbon (AC) from biomass for catalytic systems: A green and sustainable approach

Author: Timothy, A ; Akande, Amos A ; Odoh, CK ; Philip, M ; Fidelis, TT ; Amos, PI ; Banjoko, OO Date: Apr 2021 Tremendous efforts in developing sustainable processes for integrated production of value-added products/chemicals and fuels in biorefineries increase through delicate designs towards sustainability. This review focuses on the synthesis of ... Read more
Enhanced response and selectivity of H2S sensing through controlled Ni doping into ZnO nanorods by using single metal organic precursors

Author: Modaberi, MR ; Rooydell, R ; Brahma, S ; Akande, Amos A ; Mwakikunga, Bonex W ; Liu, C-P Date: Nov 2018 We report on enhancing the selectivity and response of room (23 °C) and high temperature H2S gas sensing through controlled Ni doping (0–10 at%) into ZnO nanorods (NRs) grown with a facile solution growth method using a single hybrid bimetallic ... Read more
Gas sensing materials roadmap

Author: Wang, H ; Ma, J ; Zhang, J ; Feng, Y ; Vijjapu, MT ; Yuvaraja, S ; Surya, SG ; Salama, KN ; Tshabalala, ZP ; Akande, Amos A Date: Jun 2021 Gas sensor technology is widely utilized in various areas ranging from home security, environment and air pollution, to industrial production. It also hold great promise in non-invasive exhaled breath detection and an essential device in ... Read more
Gate voltage controlled humidity sensing using MOSFET of VO2 particles

Author: Akande, Amos A ; Dhonge, BP ; Mwakikunga, Bonex W ; Machatine, AGJ Date: 2017 This article presents gate-voltage controlled humidity sensing performance of vanadium dioxide nanoparticles prepared from NH4VO3 precursor using microwave irradiation technique. The X-ray diffraction, transmission electron diffraction, and ... Read more
Improving methane gas sensing properties of multi-walled carbonnanotubes by vanadium oxide filling

Author: Chimowa, George ; Tshabalala, Zamaswazi P ; Akande, Amos A ; Bepete, G ; Mwakikunga, Bonex W ; Ray, Suprakas S ; Benechada, EM Date: Aug 2017 Manipulation of electrical properties and hence gas sensing properties of multi-walled carbon nanotubes (MWNTs) by filling the inner wall with vanadium oxide is presented. Using a simple capillary technique, MWNTs are filled with vanadium ... Read more
Micro nano manufacturing methods for chemical, gas and bio sensors, water purification and energy technologies

Author: Akande, Amos A ; Adeleye, AA ; Adenle, AA ; Mwakikunga, Bonex W Date: Dec 2020 This chapter reports on the various methods of fabricating and manufacturing micro and nano sensor, membrane and energy devices. Firstly, the characteristic often sought after by scientists and engineers for effective and efficient performance ... Read more
One-dimensional titanate nanotube materials: Heterogeneous solid catalysts for sustainable synthesis of biofuel precursors/value-added chemicals—a review

Author: Adeleye, AT ; John, KI ; Adeleye, PG ; Akande, Amos A ; Banjoko, OO Date: Sep 2021 One-dimensional (1D) titanate nanotubes materials (protonated titanate nanotube (HTNT) and sodium titanate nanotube (NaTNT)) have been reported as low-cost and efficient catalytic materials in chemical syntheses for the production of biofuel ... Read more

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Browsing by Author "Akande, Amos A"

Browsing by Author "Akande, Amos A"

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