The surfaces of Portobello mushroom spores (PMS) have been used to produce Au and Ag nanoparticles, which are held thereon. They have then been overcoated with TiOx. These adsorbed more methyl orange (MO) pollutant from water than commercial P25 TiO2. After calcination they form biomimetic TiO2 (PMS) and removal of the biotemplate, they catalyse faster rates of MO from water (molecules/mg/s) than P25 anataserutile. Other biotemplates are now anticipated that will yield biomimetic photocatalysts with higher turnover number (s-1) removal of endocrine disrupters from water.
Iman A. Jaffer Al-Timimi, Uche K. Onwukwe, Myles P. Worsley, and Paul A. Sermon, "Biomimetic TiO2 formation from interfacial sol-gel chemistry leading to new biomimetic Ag-Au/TiO2 photocatalysts," Proc. SPIE 9928, Nanobiosystems: Processing, Characterization, and Applications IX, 99280E (Presented at SPIE Nanoscience + Engineering: August 28, 2016; Published: 13 September 2016); https://doi.org/10.1117/12.2237609.
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Study of self-shadowing effect as a simple means to realize nanostructured thin films and layers with special attentions to birefringent obliquely deposited thin films and photo-luminescent porous silicon