In this talk, a set of non-metal doped and Ti3+ self-doped nanostructured TiO2 for enhanced visible-light-driven photocatalytic disinfection of organic pollutes in water will be presented. These materials were developed based on a collective and rational design in terms of the visible-light photoactivity, facile synthesis and scalability, fast transport of photo-induced charges to the surface sites, morphology of the materials for enhanced surface area and mass flow channels to facilitate adsorption and exchange of pollute molecules, and the collection of the materials for reuse. In addition, a set of novel supported single atom-based electrocatalysts will be presented for their highly efficient electrochemical synthesis of value-added chemicals and fuels from CO2 and water with a Faradaic efficiency (FE) generally over 90% and very low overpotentials. These unique supported single atom-based electrocatalysts are developed through a fundamentally different methodology from the conventional metal ion reduction method that have to use reducing agents and various other organic agents. Instead, our innovative synthesis circumvents any carbon footprint and ionic processes, directly converts bulk metals of interest to their supported single atoms, and offers a closed material recycling loop using only renewable energy.

Photocatalytic water disinfection by rationally doped titania nanostructures and electrocatalytic synthesis of value-added fuels from CO2

2019 Fall National Meeting

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