Event Title

Fabrication of WS3-x Thin Films as Photocathodes for Driving Photocatalyzed Water Splitting

Poster Number

060

Presenter Information

Maria F. Ojeda, Winthrop University

Faculty Mentor

: Clifton Harris, Ph.D.; harrisc@winthrop.edu

College

College of Arts and Sciences

Department

Chemistry, Physics, and Geology

Location

Richardson Ballroom

Start Date

20-4-2018 2:15 PM

End Date

20-4-2018 4:15 PM

Description

A novel spin-coating method has been developed for the synthesis of WS3-x thin films on transparent, conductive substrates. These films, under external bias, have been shown to catalyze hydrogen gas evolution in 0.5 M H2SO4 solution. By layering this p-type material onto a suitable oxygen-evolving catalyst, deactivation processes such as photobleaching can be prevented without the use of sacrificial additives, and both hydrogen and oxygen evolution can be sustained over extended durations of illumination.

Previously Presented/Performed?

South Carolina EPSCoR/IDeA State Conference, Columbia, South Carolina, April 2018

Grant Support?

Student Supported by an REU grant from the South Carolina EPSCoR/IDeA Program

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Apr 20th, 2:15 PM Apr 20th, 4:15 PM

Fabrication of WS3-x Thin Films as Photocathodes for Driving Photocatalyzed Water Splitting

Richardson Ballroom

A novel spin-coating method has been developed for the synthesis of WS3-x thin films on transparent, conductive substrates. These films, under external bias, have been shown to catalyze hydrogen gas evolution in 0.5 M H2SO4 solution. By layering this p-type material onto a suitable oxygen-evolving catalyst, deactivation processes such as photobleaching can be prevented without the use of sacrificial additives, and both hydrogen and oxygen evolution can be sustained over extended durations of illumination.