화학공학소재연구정보센터
Catalysis Today, Vol.224, 13-20, 2014
BiOI-based photoactivated fuel cell using refractory organic compounds as substrates to generate electricity
A visible-light-driven photo fuel cell (PFC) device, consisting of a BiOI-based photoanode (Ag-BiOI/ITO, CNT-BiOI/ITO, and TiO2-BiOI/ITO) and a Pt photocathode, was used to generate electricity by using organic compounds. The prepared BiOI and BiOI-based photoanodes were characterized by X-ray diffraction (XRD), scanning electronic microscope (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and UV-vis diffuse reflectance spectroscopy (DRS) to examine the surface structure and the properties of light absorption. The photoactivity of Bi0I-based photoanode was evaluated in the term of the electricity generation and degradation efficiency for bisphenol A (BPA) organic pollutants. The efficiencies of electricity generation using Ag-BiOI/ITO, CNT-BiOI/ITO, and TiO2-BiOI/ITO photoanodes were higher in PFC device under visible light compared with BiOI/ITO photoanode. In the mean time, the photocatalytic degradation efficiencies for BPA using Ag-BiOI/ITO, CNT-BiOI/ITO, and TiO2-BiOI/ITO photoanodes were significantly higher than that of BiOI/ITO. The enhancement in the electricity generation and degradation efficiency for BPA is attributed to the action of additives (Ag, CNT, and TiO2) on BiOI, which play a key role by driving the electrons to the cathode. (C) 2013 Elsevier B.V. All rights reserved.