Protonated Tungsten Bronze (H x WO 3 ) Acts as an Easily Regenerable Reagent for PCET Reactions
Abstract
In this work, protonated tungsten bronze powder (H x WO 3 ) was synthesized by a microwave heating technique from tungsten(VI) chloride in benzyl alcohol. This material facilitates a proton-coupled electron transfer (PCET) reaction with 2,2,6,6-tetramethyl-1-piperidinyloxyl (TEMPO) in toluene, an aprotic solvent, to form TEMPOH, evidenced by UV–vis analysis of the organic product and X-ray photoelectron spectroscopy (XPS) analysis showing the oxidation of W 5+ to W 6+ in the remaining powder. Then, under illumination in an acidic aqueous solution, the oxidized WO 3 powder reacts photochromically to regenerate H x WO 3 . The regenerated H x WO 3 reagent remains active for further PCET reactions.
Fields of Study & Subjects
Transition Metal Oxide Nanomaterials
Catalytic Processes in Materials Science
Catalysis and Hydrodesulfurization Studies
Publication details
- Journal / source
- Inorganic Chemistry
- Publisher
- American Chemical Society (ACS)
- Volume
- 65
- Issue
- 9
- Pages
- 5060–5067
- Publication date
- 24 February 2026
- Language
- EN