Her graduate work focused on the synthesis of various solid state antimony and bismuth-containing chalcogenides[9][10][11] using the "molten polychalcogenide salt method.
"[12] Choi then conducted postdoctoral studies from 2000 to 2002 at the University of California, Santa Barbara with Galen D. Stucky and Eric W. McFarland.
[19][20] The Choi group has also studied the stability of the bismuth vanadate catalyst,[21] as well as the effects of surface composition on the interfacial energetics of photoelectrochemical catalysis.
[22] In one report, Choi and coworkers developed a photoelectrochemical cell (PEC), a device that can split water into hydrogen and oxygen given inputs of light and electricity.
To sidestep this problem, Choi and coworkers paired the hydrogen evolution reaction (HER) with oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA).