Abstract Green synthesis of nanoparticles represents an important part nanotechnology that offers outstanding eco-friendly and financial benefits when compared to conventional methods use toxic substances involve complex processes. In this paper, we report a completely green process in which aqueous extract rosemary leaves containing bioactive molecular compounds (flavonoids, monoterpenoids, ph...

<p>This research examined graduates’ unemployment reduction in Abuja, using the NYSC’s Skill Acquisition and Entrepreneurship Development (SAED) Programme as a case point. The study adopted descriptive approach, anchored on Oxenfeldt’s refugee effects theory which states that drives youth to self-employment. revealed SAED programme has contributed 35% business employment for those who com...

Single-crystal PbS nanorods were successfully synthesized through a simple hydrothermal route using PEO-PPO-PEO triblock copolymer (P123) as a structure-directing agent. The XRD pattern indicates that the crystal structure of the nanorods is face-centre-cubic rocksalt. A SEM image shows that the nanorods have a diameter of 40-70 nm and a length of 200-600 nm, and both tips exhibit taper-like st...

In this paper we report the effect of aniline concentrations on the growth and size of silver nanocrystals using aniline and silver nitrate as reductant and oxidant, respectively. UV-Vis spectroscopy, transmission electron microscopy (TEM) and selected areas electron diffraction (SAED) have been employed to characterize silver nanoparticles. The TEM images show that silver nanocrystals are roug...

The role of one-dimensional nanostructures has gained immense importance in recent times. These types of nanowires and nanorods are used in probe microscopy, nano electronics, quantum devices and mesoscopic devices. This review compares the various methods used to synthesize such nanowires such as vapor-liquid-solid growth mechanism, oxide assisted nucleation and carbothermal reduction. The dif...

In this study, Cu nanoparticles were immobilized on the surface of natural bentonite using Thymus vulgaris extract as a reducing and stabilizing agent. The natural bentonite-supported copper nanoparticles (Cu NPs/bentonite) were characterized by FTIR spectroscopy, X-ray diffraction (XRD), X-ray fluorescence (XRF), field emission scanning electron microscopy (FE-SEM), energy dispersive X-ray spe...

Harvest and post-harvest operations constitute principal constraints to rice production, especially in irrigated systems, because of the larger yield that has to be handled. Post-harvest crop losses of up to 35% have been reported and attributed to inefficiency of manual threshing of rice by small-scale farmers. This leads to poor grain quality and rejection of locally produced rice. The Africa...