Pseudomonas aeruginosa RB. Pseudomonas aeruginosa RB strain:RB

Quantum dots (QDs) are 1–10 nm semiconductor nanoparticles that possess size-dependent luminescence. One of the QDs, cadmium selenide (CdSe) attracts particular attention because it is useful for light emitting diodes, solar cells, and biological imaging. However, conventional chemical synthesis of CdSe involves highly toxic solvents and high temperatures. Additionally, it is not easy to obtain nanoparticles of the desired size because of their high growth rate. To overcome the shortcomings of the chemical synthesis method, microbial synthesis of CdSe at ambient temperature and pressure without toxic solvents has attracted much attention recently as an environmentally friendly procedure. Microbial manufacturing will increase controllability of the formation and growth of the QDs. To date, only a few microbes have been applied to CdSe synthesis. It is therefore worthwhile to seek novel, effective CdSe-synthesizing microbes, especially for use in the one-vessel process. However, no report in the relevant literature to date describes a study conducted to screen microbes suitable for one-vessel CdSe synthesis. Such bacteria might be capable of being both cadmium-resistant and of reducing selenite to selenide. The bacterium with both cadmium-resistant and selenite-reducing capabilities as a promising microbial catalyst for producing CdSe nanoparticles using an economical and environmentally friendly one-vessel process was enriched and isolated from a sample.