Figure 4.

Spin controlled water splitting. The results obtained using 20 nm Fe₃O₄ nanoparticles and nanoparticles coated with achiral or chiral molecules, which are supported on an FTO substrate to make the OER anode. (A) Absorption spectra of a 1 mM L-A3 solution (blue line) and Fe₃O₄@L-A3 (red line); (B) CD spectra of a 1 mM solution of the molecules (blue line) and Fe₃O₄ particles to which the chiral molecules were attached (red line). (C) Current density of Fe₃O₄ NPs linked with L-A3 (chiral) and pure Fe₃O₄ NPs. (D) Visible absorption spectra from the titration of the electrolyte used (0.1 M Na₂SO₄) with o-tolidine of bare Fe₃O₄, Fe₃O₄@L-A11 (chiral), Fe₃O₄@L-A3 (chiral), Fe₃O₄@MPA (achiral), and Fe₃O₄@AIB₁₀ (NH-(CH₂)₂-SH-(Aib)₁₀-NH₂, achiral). The absorption scale in (A) and (D) is arbitrary. Reprinted with permission from ref (37). Copyright 2018 American Chemical Society.