Abstract
The synergetic effects of nickel (Ni) and graphene (G) as promotors for TiO2 on photocatalytic hydrogen production have been observed. Ni/TiO2, G/TiO2, and Ni-G/TiO2 were synthesized via a wet impregnation method. While G-TiO2 gave a similar H2 yield to that of the unmodified TiO2, Ni/TiO2 tripled it for the same reaction time. Surprisingly, Ni-G/TiO2 exhibits a 10-fold H2 production as compared to the unmodified case. A mechanism is proposed in which Ni and graphene cooperate for the betterment of photocatalytic hydrogen production by facilitating concerted trapping and relay of electrons, thereby realizing effective charge-carrier separation and conduction. Graphical abstract: [Figure not available: see fulltext.]
Original language | English |
---|---|
Pages (from-to) | 1263-1270 |
Number of pages | 8 |
Journal | MRS Communications |
Volume | 12 |
Issue number | 6 |
DOIs | |
Publication status | Accepted/In press - 2022 |
Keywords
- Energy generation
- Graphene
- Ni
- Photochemical
- Ti