Publication detail

An eco-friendly process for zerovalent bismuth nanoparticles synthesis

Reverberi, A.P. Varbanov, P.S. Lauciello, S. Salerno, M. Fabiano, B.

Original Title

An eco-friendly process for zerovalent bismuth nanoparticles synthesis

Type

journal article in Web of Science

Language

English

Original Abstract

A two-pot bismuth nanoparticle synthesis based on a combination of a bottom-up method and a disaggregation technique is proposed. These steps are sequential in time and are operated in an aqueous and organic solvent, respectively. In the first phase, a cementation process with aluminium and zinc as sacrificial metals in compact form is carried out using mannitol, saponin and maltodextrin as eco-friendly capping agents for bismuth nanoparticles. In the second phase, a wet ball-stirring process allows obtaining a primary particles release in propylene glycol with a satisfactory stability. The products are characterized by dynamic light scattering and transmission electron microscopy for the size and by X-ray diffraction for both size and chemical composition. The diameters of bismuth nanoparticles obtained using both zinc and aluminium as reductants lie in the range of 10–120 nm independently of the capping agents. With respect to conventional one-pot processes using sacrificial metals in powder, this technique allows obtaining a high purity metallic bismuth at the end of the cementation step without requiring further purification treatments, thus avoiding a waste of chemical reagents in view of a cleaner production and sustainability. All stages of preparation are carried out at room temperature for a better energy saving and safety management. This process may represent a valid alternative to standard techniques based on noxious reductants or high temperature synthesis, thus promoting a shift towards a green nanoparticle synthesis.

Keywords

Bismuth; Bottom-up; Cementation; Green chemistry; Inherent safety; Nanoparticles; Aluminum; Cementing (shafts); Energy conservation; Environmental protection; High resolution transmission electron microscopy; Light scattering; Light transmission; Metal nanoparticles; Nanoparticles; Pollution control; Sustainable development; Transmission electron microscopy; Zinc; Disaggregation techniques; High-temperature synthesis; Inherent safety; Nanoparticle synthesis; Purification treatments; Synthesis (chemical)

Authors

Reverberi, A.P.; Varbanov, P.S.; Lauciello, S.; Salerno, M.; Fabiano, B.

Released

10. 10. 2018

Publisher

Elsevier Ltd

ISBN

0959-6526

Periodical

Journal of Cleaner Production

Year of study

198

Number

198

State

United Kingdom of Great Britain and Northern Ireland

Pages from

37

Pages to

45

Pages count

9

BibTex

@article{BUT151484,
  author="Reverberi, A.P. and Varbanov, P.S. and Lauciello, S. and Salerno, M. and Fabiano, B.",
  title="An eco-friendly process for zerovalent bismuth nanoparticles synthesis",
  journal="Journal of Cleaner Production",
  year="2018",
  volume="198",
  number="198",
  pages="37--45",
  doi="10.1016/j.jclepro.2018.07.011",
  issn="0959-6526"
}