Session Overview |
Thursday, May 30 |
08:00 |
Hot carrier extraction in plasmon integrated TiO2 anodes for enhanced photoelectrochemical activity
* Narendra Chaulagain, University of Alberta, Canada Ehsan Vahidzadeh, University of Alberta Damin Vrushabendrakumar, University of Alberta Karthik Shankar, University of Alberta Hybrid carbon nitride/titanium dioxide heterojunction photoanodes consisting of buried plasmonic Au nanoislands (AuNI) and/or decorated with Au nanoparticles (AuNP) exhibited remarkable photoelectrochemical (PEC) performance for water splitting in the visible-light regime due to successful harvesting of plasmonic hot carriers. In this work, we present distinct architectures for efficient harvesting of plasmonic hot carriers. |
08:15 |
III-nitride semiconductor nanostructured photocatalysts for photoelectrochemical solar fuel production
* Afjalur Rahman, INRS-EMT, Canada Sharif Sadaf, INRS-EMT Photoelectrochemical (PEC) water splitting and CO2 reduction hold significant promise as a technology for converting solar energy into value-added fuels for hydrogen and hydrocarbon production. We have studied the PEC performance of the III-nitride nanowire (NW) based photocathodes and photoanodes, including p-GaN and InGaN/GaN multiple quantum wells (MQWs) NWs. The overall aim is to improve the efficiency of PEC water splitting and CO2 reduction using this novel class of semiconductor-based nanostructured photocatalysts. |
08:30 |
Hollow Titanium Dioxide and Titanium Nitride Nanospheres: Absorption, Scattering and LSPR at work for Photocatalytic H2 Production
* Jerome Claverie, Université de Sherbrooke, Canada Fabrication of hollow nanosphere with surface defects via spontaneous-growth provides a promising platform for TiO2-based high-efficiency photocatalysts, because the unique structure optimizes the surface areas and utilization of light. In this communication, we analyze the impact of scattering and absorption in a systematic manner in full nanospheres, hollow nanospheres, as well as yolk-shell nanospheres. In order to boost the photocatalytic activity, various plasmonic particles were incorporated within the catalyst, such as gold, copper, silver and titanium nitride. |
08:55 |
Plasmonic Au Decorated CdS Nanowire Arrays for Enhanced Photoelectrochemical Hydrogen Evolution
Kazi Alam, University of Alberta, Canada * Narendra Chaulagain, University of Alberta Ajay Manuel, University of Alberta Karthik Shankar, University of Alberta In this work, an exciton-plasmon coupled system comprising hexagonal CdS nanowire and Au nanoparticle has been synthesized, characterized and tested in photoelectrochemical (PEC) water-splitting experiment. The significantly improved device performance of the Au@CdS hybrid in comparison to that of bare CdS nanowires has been primarily attributed to plasmon-induced hot electron injection from Au nanoparticles into adjacent CdS nanowires. |