 This research introduces single platinum atom sites coordination with oxygen atom, PTO, PTOFE, sites into single crystalline Fe2O3 nanoflakes photoanodes, SARS-PT, Fe2O3, of, which significantly increases the photoelectrical performance of hematite-based photoanodes. The single atom PT doping of Fe2O3 can induce few electron trapping sites, enhance carrier separation capability, and boost charge transfer lifetime in the bulk structure as well as improve charge-carrier injection efficiency at the semiconductor electrolyte interface. Further introduction of surface oxygen vacancies can suppress charge-carrier recombination and promote surface reaction kinetics, especially at low potential. As a result, the optimum SARS-PT, Fe2O3, of photoanode exhibits the photoelectrical performance of 3.65 and 5.30 milliampere cm2 at 1.23 and 1.5 ViG, respectively, with an applied bias photon to current efficiency of zero. This article was authored by Ruiting GAO, Jiang Wei Zhong, Tomahiko Nokojima, and others. We are article.tv, links in the description below.