Abstract
Biocompatible syntheses of Cu2O nanoparticles are relatively low compared to some other reported metal oxides due to their low stability and requiring more carefully controlled synthetic conditions. In the present study, the efficiency of three brown algae (Cystoseira myrica, Sargassum latifolium and Padina australis) extracts collected from the Persian Gulf was evaluated in the biosynthesis of Cu2O nanoparticles. A fast and simplified synthesis of Cu2O nanoparticles with average size between 12 and 26 nm was successfully achieved through an eco-friendly method using the aqueous extracts of Sargassum latifolium and Cystoseira myrica. Whereas, under the same reaction conditions using Padina australis extract no Cu2O nanoparticles were produced, and unexpectedly, the results approved the formation of spindle shaped CaCO3 with average sizes of 1–2 μm in length and 300–500 nm in width. Structure, morphology and composition of the as-prepared products were characterized by XRD, FT-IR, UV-vis, TEM and FESEM analysis. This work confirms that the biomolecules present in algae have the ability to affect particle size, morphology, composition, and physicochemical properties of the synthesized particles. The Cu2O nanoparticles prepared in this study were stable and exhibited efficient antibacterial and anticancer activity. This biosynthesis technique can be valuable in environmental, biotechnological, pharmaceutical and medical applications.
Highlights
Green nanotechnology has nowadays emerged as an area of research involving more eco-friendly and energy-efficient methodologies for the synthesis of metal-based nanoparticles.[1,2] Biological synthesis of NPs has been proposed as an alternative to physicochemical synthesis because of the fundamental principles of ‘green’ chemistry and striving to have a clean world
The efficiency of three brown algae (Cystoseira myrica, Sargassum latifolium and Padina australis) extracts collected from the Persian Gulf was evaluated in the biosynthesis of Cu2O nanoparticles
A fast and simplified synthesis of Cu2O nanoparticles with average size between 12 and 26 nm was successfully achieved through an eco-friendly method using the aqueous extracts of Sargassum latifolium and Cystoseira myrica
Summary
Green nanotechnology has nowadays emerged as an area of research involving more eco-friendly and energy-efficient methodologies for the synthesis of metal-based nanoparticles.[1,2] Biological synthesis of NPs has been proposed as an alternative to physicochemical synthesis because of the fundamental principles of ‘green’ chemistry and striving to have a clean world. It focuses on the fabrication of NPs using ecofriendly, harmless and commercially viable substances The biological systems such as bacteria, viruses, algae, yeast, fungi and plants have been extensively used in these environmentfriendly approaches.[3] Simple methods have been established including of extracellular or intracellular reduction of metal ions by biological extracts.[4,5] These extracts transform metal precursors to their corresponding NPs. Interestingly; noteworthy studies related to the biosynthesis of metal-based nanoparticles have focused on the use of various types of algae in the recent decade.[2,5,6] The algal species have been
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