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, 10 (5), 1131-1136

Fungal Nanoscale Metal Carbonates and Production of Electrochemical Materials

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Fungal Nanoscale Metal Carbonates and Production of Electrochemical Materials

Qianwei Li et al. Microb Biotechnol.

Abstract

Fungal biomineralization of carbonates results in metal removal from solution or immobilization within a solid matrix. Such a system provides a promising method for removal of toxic or valuable metals from solution, such as Co, Ni, and La, with some carbonates being of nanoscale dimensions. A fungal Mn carbonate biomineralization process can be applied for the synthesis of novel electrochemical materials.

Figures

Figure 1
Figure 1
Scanning electron microscopy images of lanthanum carbonate precipitated on addition of LaCl3 to a culture supernatant derived from growth of Neurospora crassa in urea‐supplemented medium. Scale bars: (A) = 20 μm, (B) = 1 μm. Typical images are shown from many similar examples (Li, Q. and Gadd, G.M., unpublished).
Figure 2
Figure 2
Fungal biomineralization of copper carbonate. A. Transmission electron microscopy image of copper carbonate. B. Scanning electron microscopy of cobalt carbonate both precipitated by addition of the metal chlorides to a culture supernatant derived from growth of Neurospora crassa in urea‐supplemented medium. Scale bars = 200 nm. Typical images are shown from many similar examples. C. Model of copper carbonate bioprecipitation in the nanoscale (Li, Q. and Gadd, G.M., unpublished).

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