RT Journal Article
T1 Green synthesis of tellurium nanoparticles by tellurate and tellurite reduction using Aeromonas hydrophila under different aeration conditions
A1 Castro Ruiz, Laura
A1 Li, Jing
A1 González González, Felisa
A1 Muñoz Sánchez, Jesús Ángel
A1 Blázquez Izquierdo, María Luisa
AB Tellurium nanoparticles (TeNPs) are extensively used in biomedicine, electronics and some other industrial applications. Few microorganisms have been studied for the production of TeNPs either under aerobic or anaerobic conditions. Remarkably, this study is the first report of a bacteria able to perfectly grow anaerobically and aerobically in the presence of both tellurium oxyanions, TeO32− and TeO42−. Aeromonas hydrophila offers a clean and cost-effective synthesis of tellurium nanoparticles using a biological method and overcoming the main limitations of traditional synthesis, such as the requirement of a lot of energy and toxic reagents. The cells grew up to 75 mg/L of tellurium when tellurite was the precursor and up to 200 mg/L of tellurium with tellurate. The biogenic nanoparticles were extensively characterized in terms of morphology, structure and composition using SEM, TEM, XRD and EDX analysis. Different Te(0) nanostructures were biosynthesized varying growth conditions: crystalline nanorods (some of them reach more than 1000 nm in length due to Ostwald ripening), rosettes and irregularly shaped nanospheres. In addition, A. hydrophila developed various mechanisms to produce the elemental tellurium and to overcome the toxicity demonstrating the versatility of this microorganism to subsist in polluted environments and its potential for biotechnological applications in bioremediation including the green synthesis of TeNPs.
PB Elsevier
SN 0304-386X
YR 2020
FD 2020
LK https://hdl.handle.net/20.500.14352/91228
UL https://hdl.handle.net/20.500.14352/91228
LA eng
NO Castro, L.; Li, J.; González, F.; Muñoz, J. A.; Blázquez, M. L. Green synthesis of tellurium nanoparticles by tellurate and tellurite reduction using Aeromonas hydrophila under different aeration conditions. Hydrometallurgy 2020, 196, 105415.
NO Ministerio de Economía y Competitividad (España)
DS Docta Complutense
RD 9 abr 2025