Journal
IET NANOBIOTECHNOLOGY
Volume 13, Issue 2, Pages 150-159Publisher
WILEY
DOI: 10.1049/iet-nbt.2018.5006
Keywords
visible spectra; Fourier transform spectra; nanocomposites; nanobiotechnology; transmission electron microscopy; X-ray diffraction; biomimetics; zinc compounds; catalysis; antibacterial activity; microorganisms; chromatography; scanning electron microscopy; ultraviolet spectra; nanoparticles; photochemistry; infrared spectra; calcination; nanofabrication; antimicrobial action; environmental resource; prunus cerasifera seed; phytochemicals; green synthesis; variable calcination temperatures; hexagonal wurtzite geometry; X-ray powder diffraction; gas chromatography; mass spectrometry; pseudofirst-order degradation kinetics; green chemistry; Aspergillus niger; Aspergillus flavus; Aspergillus terreus; antimicrobial inhibition; environmental remediation; photocatalytic inhibition; carpogenic nanoparticles; nanophotocatalytic action; size 5; 62 nm; electron volt energy 3; 4 eV; time 18; 0 min; size 56; 57 nm to 107; 7 nm; ZnO
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This investigation has for the first time utilised environmental resource Prunus cerasifera seed extract phytochemicals for the green synthesis of carpogenic ZnO nanoparticles (NPs). Spherical morphology and size range of 56.57-107.70 nm at variable calcination temperatures without the use of any external reducing agent was obtained. The synthesised NPs exhibited hexagonal wurtzite geometry with an average crystal size 5.62 nm and a band gap of 3.4 eV. Carpogenic NPs were investigated for optical, compositional, morphological, and phytochemical make up via ultraviolet spectroscopy (UV-Vis), Fourier transform infrared analysis, X-ray powder diffraction, scanning electron microscopy, and gas chromatography and mass spectrometry. Carpogenic NPs degraded methyl red up to 83% with pseudo-first-order degradation kinetics (R-2 = 0.88) in 18 min signifying their remediation role in environment in conformity with all principles of green chemistry. Photocatalytic assays were performed in direct solar irradiance. Nine pathogens of biomedical and agricultural significance having multi-drug resistance were inhibited in vitro via the Kirby-Bauer disc diffusion assay. The enhanced photocatalytic and antimicrobial inhibition not only makes carpogenic ZnO NPs a future photo-degradative candidate for environmental remediation but also a nanofertiliser, nanofungicide, and nanobactericide synthesised via bioinspired, biomimetic, green, and unprecedented route.
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