کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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609447 | 880623 | 2010 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Mesoporous zirconium phosphate from yeast biotemplate Mesoporous zirconium phosphate from yeast biotemplate](/preview/png/609447.png)
Mesoporous zirconium phosphate has attracted increasing interest due to its extraordinary functionalities. In particular, great progress has been made in the synthesis of mesoporous zirconium phosphate using traditional approaches. However, synthesis of mesoporous zirconium phosphate using yeast as biotemplate has not been well studied so far. Here, we show that zirconium phosphate with a mesoporous structure has been synthesized under ambient conditions using yeast as biotemplate. The derived samples were examined by X-ray diffraction (XRD), energy-dispersive X-ray analysis (EDX), transmission electron microscopy (TEM), thermogravimetry/differential thermal analysis (TG/DTA), fourier transform infrared spectroscopy (FTIR), and N2 adsorption–desorption isotherms. A biotemplated mesoporous zirconium phosphate, possessing a specific surface area (Brunauer–Emmett–Teller, BET) of 217.64 m2 g−1, a narrow pore distribution centered at 2.7 nm, and pore volume of 0.24 cm3 g−1, was obtained. We discover that amide carboxyl groups of yeast play an important role in the chemical interaction between protein molecules and zirconium phosphate nanoparticles. Interestingly, an air electrode fabricated using mesoporous zirconium phosphate exhibits remarkable electrocatalytic activity for oxygen reduction reaction (ORR), compared to that of the electrolytic manganese dioxide (EMD) air electrode employed commercially, which has important applications in fuel cell technologies.
Mesoporous zirconium phosphate with high specific surface area (217.64 m2 g−1) was prepared using yeast cells as templates.Figure optionsDownload high-quality image (66 K)Download as PowerPoint slide
Journal: Journal of Colloid and Interface Science - Volume 343, Issue 1, 1 March 2010, Pages 344–349