1.
Graphene and graphene oxide: biofunctionalization and applications in biotechnology.
Wang, Y, Li, Z, Wang, J, Li, J, Lin, Y
Trends in biotechnology. 2011;(5):205-12
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Abstract
Graphene is the basic building block of 0D fullerene, 1D carbon nanotubes, and 3D graphite. Graphene has a unique planar structure, as well as novel electronic properties, which have attracted great interests from scientists. This review selectively analyzes current advances in the field of graphene bioapplications. In particular, the biofunctionalization of graphene for biological applications, fluorescence-resonance-energy-transfer-based biosensor development by using graphene or graphene-based nanomaterials, and the investigation of graphene or graphene-based nanomaterials for living cell studies are summarized in more detail. Future perspectives and possible challenges in this rapidly developing area are also discussed.
2.
Characterization of cadmium removal by Rhodotorula sp. Y11.
Li, Z, Yuan, H
Applied microbiology and biotechnology. 2006;(2):458-63
Abstract
Experiments were conducted studying the removal of Cd(2+) from water via biosorption using Rhodotorula sp. Y11. The effects of temperature and initial pH of the solution on biosorption were studied. Caustic and heat treatments showed different influences on the biosorption capacity, and the highest metal uptake value (19.38 mg g(-1)) was obtained by boiling treated yeast cells. The presence of competing cations, such as Ag(+), Cu(2+), and Mg(2+), except Na(+) ions, significantly interfered with the metal uptake. Results indicate that the Langmuir model gave a better fit to the experimental data than the Freundlich equation. The q (10) value was 11.38 mg g(-1) for Cd(2+) uptake by Y11. Chemical modifications of the biomass demonstrated that carboxyl and amide groups play an important role in Cd(2+) biosorption.