Biosynthesis of CdS nanoparticles through microbial induced calcite precipitation

Cadmium sulphide quantum dots with tunable electronic properties by bacterial precipitation

“…30–33 Contrarily, biological methods do not have such drawbacks, and therefore have the potential to reduce the environmental impact of CdS NP fabrication. 34–37 Although the precipitation of NPs by microorganisms, 38–41 including bacteria, has been reported before, 42–50 an in-depth analysis of the size and photoelectronic properties of the resulting NPs has not yet been performed, nor has the biological system been manipulated to tune those properties through varying precursor concentrations. Additionally, the assembly of a photoactive device from bacterially precipitated CdS NPs has not been demonstrated.…”

Millifluidic synthesis of cadmium sulfide nanoparticles and their application in bioimaging

“…For example, microscale systems involving capillary tubes offer simplicity in terms of implementation and adaptation to macroscale injection methods, but are constrained by limited geometric designs and relatively larger footprints. 33 Biosynthesis methods, on the other hand, despite enabling the fabrication of biocompatible nanoparticles using green chemistry at room temperatures, suffers from low throughput, long synthesis durations, 27 and requires further investigation of the nanoparticle purication processes as biomolecules might still be attached to the nanoparticle surfaces. Miniature uidic channels or lab-on-chip (LoC) devices, in addition to the advantages offered by capillary tubes, provide additional exibility for various designs to generate reproducible mixing within the channel.…”

Fungal nanoscale metal carbonates and production of electrochemical materials

“…Research has demonstrated that many metal-accumulating or transforming microbes are capable of forming nanoparticles (e.g. Te, Se, CdS, HUO 2 PO 4 ) (Macaskie et al, 1992;Williams et al, 1996;Dickson, 1999;Lloyd et al, 1999;Taylor 1999;Klaus-Joerger et al, 2001;Zhu et al, 2016b). Their production by microbial systems may allow manipulation of size, morphology, composition and crystallographic orientation, with applications in bioremediation, antimicrobial treatments (e.g.…”

“…Their production by microbial systems may allow manipulation of size, morphology, composition and crystallographic orientation, with applications in bioremediation, antimicrobial treatments (e.g. nano-silver), solar and electrochemical energy, and microelectronics (Dameron et al, 1989;Jauho and Buzaneva, 1996;Hayashi et al, 1997;Edelstein and Cammaratra, 1998;Klaus-Joerger et al, 2001;Zhu et al, 2016b). In a ureolytic fungal-mediated bioprecipitation system, more than 70% of supplied Co 2+ , Ni 2+ , Cu 2+ or Zn 2+ was precipitated in the form of hydrated carbonates and all these minerals showed a nanoscale phase.…”