TiO N /TiO was synthesized by nitriding of TiO in NH gas. TiO N /TiO generated hydrogen from methanol aqueous solution under visible-light irradiation. It was revealed by N K-edge XANES and N 1s XPS measurements that the N species contributing to visible-light responsiveness was the O-Ti-N species. The structure of TiO N /TiO showing the photocatalytic activity was a double shell type with thin layers of TiO N that covers the TiO core. Although N content on the surface decreased during the photocatalytic reaction, N was supplied from the deeper side to keep the TiO N phase at the surface and the activity as well.
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http://dx.doi.org/10.1021/acsomega.9b02977 | DOI Listing |
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Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia.
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State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
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