Proceedings of 6th International Conference on Hybrid and Organic Photovoltaics (HOPV14)
Publication date: 1st March 2014
An increasing demand for energy, and thus a gradual decline of energy resources induces interest in new energy systems. One possible course of action is to study direct conversion of solar energy to chemical energy using semiconductor photoelectrodes. Furthermore, carbon dioxide (CO2), as the primary greenhouse gas also being emitted during human activities, could be converted using sunlight to organic compound which leads to the simultaneous generation of alternative fuels and environmental remediation of carbon emissions from the continued use of conventional fuels.
Materials of interest to the photoelectrocatalysis should contribute to the process of conversion of solar energy into chemical energy. We can mention here a variety of oxide semiconductors such as titanium dioxide (TiO2), copper(I) oxide (Cu2O), copper(II) oxide (CuO), zinc oxide (ZnO) and tungsten(VI) oxide (WO3). Our research interests concern semiconducting materials of potential utility to photoelectrochemical reduction of CO2. We use distinct electrode substrates, e.g. titanium foil or conducting glass and we create a multicomponent arrangements. In regard to synthesis of the copper(I) oxide, we refer to the preparative approach [1] reported recently by K. Rajeshwar et al. Consequently copper(I) oxide (Cu2O) have been electrodeposited on the above-mentioned substrates from a basic solution of lactate- stabilized copper sulfate upon application of a constant potential. The system proposed herein is characterized by relatively high current density for photoelectrochemical reduction of CO2. By analogy to the previous studies performed in this field, it is reasonable to assume that methanol predominates as a final product.
[1] Tailoring Copper Oxide Semiconductor Nanorod Arrays for Photoelectrochemical Reduction of Carbon Dioxide to Metanol; K. Rajeshwar, N. R. de Tacconi, G. Ghadimkhani, W. Chanmanee, and C. Janáky.
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International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
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