Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 265, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2019.118539
Keywords
g-C3N4; MXene; Carbon-doped TiO2; Hydrogen production; Photocatalyst
Funding
- NSF of China [61775131, 51572046]
- MOE of China [111-2-04, IRT_16R13]
- STC of Shanghai [16XD1400100, 16JC1400700]
- SMEC [2017-01-07-00-03-E00055]
- International Joint Laboratory for Advanced fiber and Low-dimension Materials [18520750400]
- Fundamental Research Funds for the Central Universities
- Graduate Student Innovation Fund of Donghua University [CUSF-DH-D-2019003]
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Photocatalytic hydrogen production is a fascinating clean energy technology to solve the environmental issues and energy crisis. Herein, Ti3C2, a member of MXene, is successfully designed as a precursor for preparing C-TiO2/g-Ti3C2 photocatalyst without extra carbon addition, and the C-TiO2/g-Ti3C2 photocatalysts exhibit drastically improved photocatalytic hydrogen generation activity. When the mass ratio of Ti3C2 to g-Ti3C2 is 10 wt% in the composite, the prepared C-TiO2/g-Ti3C2 composite photocatalyst shows the highest photocatalytic H-2 production activity as high as of 1409 imol/h/g, which is about 8 times and 24 times higher than the activity of pure g-Ti3C2 and C-TiO2, respectively. The possible mechanism is assumed that the achieved intimate heterojunction between the Ti3C2 MXene-derived C-doped TiO2 and g-Ti3C2 can efficiently facilitate the photogenerated charge transfer and inhibit the recombination of electronics and holes, which markedly enhanced photocatalytic hydrogen production activity of C-TiO2/g-Ti3C2 photocatalysts under visible light.
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