Gold nanorods coated by oxygen-deficient TiO2 as an advanced photocatalyst for hydrogen evolution. Issue 45 (19th April 2016)

• Record Type: Journal Article
• Authors: Kou, S. F.; Ye, W.; Guo, X.; Xu, X. F.; Sun, H. Y.; Yang, J.
• Is Part Of: RSC advances. Volume 6:Issue 45(2016)
• Page Start: 39144
• Page End: 39149
• Publication Date: 2016-04-19
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra04444a
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Gold nanorods coated by oxygen-deficient TiO2 are synthesized by slow hydrolysis followed with high-temperature annealing in a reducing atmosphere. The hydrogenated product Au@H-TiO2 shows enhanced photocatalytic ability in hydrogen generation. Abstract : Gold nanorods coated by oxygen-deficient TiO2 are synthesized by slow hydrolysis followed with high-temperature annealing in a reducing atmosphere. This does not alter the morphology of the nanorods, but produces Ti 3+ species and oxygen vacancies in the shell. These nanorods show superior photocatalytic ability in hydrogen generation. The enhanced performance may be attributed to the synergistic effect of Ti 3+ species, oxygen vacancies and Au, which effectively enhance light absorption, reduce charge recombination and increase charge-transfer across the interface between the electrolyte and electrode.