Egg-white Templating of Hierarchically Macroporous Architectures of SiO2, TiO2 and C/SiCN Nanocables, and Photocatalytic Properties

Title: Egg-white Templating of Hierarchically Macroporous Architectures of SiO2, TiO2 and C/SiCN Nanocables, and Photocatalytic Properties

Volume: 7 Issue: 6

Author(s): Falu Yang, Yongjun Ma, Yong Zhou, Chonghua Pei, Qingping Luo, Min Zeng and Bo Dai

Affiliation:

Keywords: C/SiCN nanocables, egg-white template, ladder-like structure, photocatalytic properties, Macroporous Architectures

Abstract: Egg-white was found to exist in the form of ladder-like structure after a freeze-drying process. Several hierarchically ordered macroporous structures were synthesized by sol-gel method with egg-white template, such as the 3D ladder-like structures of SiO2, TiO2, and C/SiCN nanocables. Thermogravimetric (TG), differential scanning calorimetry (DSC), Scanning electron microscopy (SEM), powder X-ray diffraction (XRD), fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), selected area electron diffraction (SAED) and high-resolution TEM (HRTEM) were employed to characterize the novel macroporous architecture. The results indicate that the hierarchically macroporous architectures were copied completely. The photocatalytic properties of TiO2 replica were also studied. The nearly linear relationship of the MO degradation percentage vs irradiation time suggests that the reaction follows a first-order kinetic mode. Within 2 h, the degradation rate of the methyl orange was reached at 99%, indicating a high efficient photocatalytic property of this ordered TiO2 macroporous architecture.

Cite this article as:

Yang Falu, Ma Yongjun, Zhou Yong, Pei Chonghua, Luo Qingping, Zeng Min and Dai Bo, Egg-white Templating of Hierarchically Macroporous Architectures of SiO2, TiO2 and C/SiCN Nanocables, and Photocatalytic Properties, Current Nanoscience 2011; 7 (6) . https://dx.doi.org/10.2174/157341311798220655