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Highly-Efficient Capillary Photoelectrochemical Water Splitting Using Cellulose Nanofiber-Templated TiO2 Photoanodes
Snapshot: Among current endeavors to explore renewable energy technologies, photoelectrochemical (PEC) water splitting holds great promise for conversion of solar energy to chemical energy. Light absorption, charge separation, and appropriate interfacial redox reactions are three key aspects that lead to highly efficient solar energy conversion. High porosity three-dimensional (3D) nanostructures, such as branched nanowire architectures and nanofiber networks, offer extremely large surface areas, excellent charge transport properties, as well as long optical paths for efficient light absorption.
Schematic illustration of the capillary photoelectrochemical water splitting process. Tivoli C. Gough, U.S. Department of Agriculture Forest Service.