Green synthesis of ZnO nanoparticles by Aspalathus linearis: Structural & optical properties

Green synthesis of Co3O4nanoparticles viaAspalathus linearis: Physical properties

“…The precipitate was then separated from the aqueous extract, first by decanting then by centrifuging at 1000 rpm 3 times for 10 min each over successive additions of de-ionized water to wash the precipitate of any residual aqueous extract. As the synthetized oxides-based nanoparticles by green process are generally amorphous, an annealing was necessary to induce an effective crystallization (23)(24)(25)(26)(27)(28)(29)(30)(31)(32). In this case, the asobtained centrifuged precipitate was heated at 90°C for 90 min to remove bio-compounds in excess.…”

“…Figure 7 shows the typical XPS spectrum of the annealed Cobalt oxide nanoparticles. (28)(29)(30)(31)(32); the mechanism of formation of such nanoparticles is not understood and is being investigated using in situ and ex situ High Performance Liquid Chromatography and Liquid Chromatography Mass Spectrometry. As mentioned previously, A. Linearis leaf extract contains, among others, two unique phenolic compounds: aspalathin (a dihydrochalcone C-glucoside) and aspalalinin (a cyclic dihydrochalcone).…”

Microwave assisted biosynthesis of rice shaped ZnO nanoparticles usingAmorphophallus konjactuber extract and its application in dye sensitized solar cells

“…Biosynthesis method is considered to be an alternative to the conventional methods which involve the use of plant extracts [20], fungi [21], viruses [22] and bacteria [23] in the nanoparticle synthesis process. Among the above mentioned, green synthesis process using plant extracts is relatively simple.…”

Synthesis and characterization of novel spinel Zn 1.114 La 1.264 Al 0.5 O 4.271 nanoparticles

“…Combustion is a simple and suitable method for the synthesis of nanoparticles such as advanced ceramics, catalysts and nanomaterials [7] that is based on the principles of the propellant chemistry [8] in which a thermally induced redox reaction takes place between an oxidant and a fuel. The monophasic nanopowders with homogeneous microstructure can be prepared with this method at lower temperatures or shorter reaction times, in comparison with other conventional methods like solid-state synthesis [9,10] or nitrate method [11]. The process of thermal decomposition of citrate precursor [12e16] has indicated good results among various synthetic approaches.…”