Green synthesis of bismuth nanoparticles using green coffee beans extract

Abstract A green synthetic process based on plant sources could be an alternative option to conventional chemical one to synthesize nanostructured bismuth. This study explored a facile and green synthetic protocol for synthesizing bismuth nanoparticles (BiNPs) in an aqueous solution employing green coffee bean extract as a key reducing and capping agent. Several techniques, including X-ray diffraction, electron microscopy, energy dispersive X-ray and Fourier-transform infrared spectroscopy, and thermogravimetric analysis, have been used to characterize the resultant product. The outcomes show that crystalline BiNPs are successfully produced using the green synthesis method based on plant sources. The obtained BiNPs have a spherical shape, a diameter ranges of 20 to 40 nm, and are stabilized by phytochemicals. The purpose of the current study is to ascertain the potential impact of plant sources on the environmentally friendly synthesis of BiNPs.