Simply Coupling TiO<inf>2</inf> Nanospheres with Cu<inf>2</inf>O Particles to Boost the Photocatalytic Hydrogen Evolution through p–n Heterojunction-Induced Charge Transfer
- Publisher:
- Wiley
- Publication Type:
- Journal Article
- Citation:
- Energy Technology, 2022, 10, (1), pp. 2100259
- Issue Date:
- 2022-01-01
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| retrieve (6).pdf | Published version | 5.66 MB |
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Developing an efficient photocatalyst for solar-to-hydrogen production is regarded as a promising approach to tackle the energy and environmental challenges that we are currently facing. Herein, the TiO2–Cu2O nanocomposite is synthesized via a chemical reduction approach at ambient temperature and used as a photocatalyst. The composition and structure characterizations indicate that Cu2O particles are loaded on the surface of TiO2 nanospheres. The photocatalytic performance of the as-obtained materials is evaluated by a solar-to-hydrogen production test. It is found that the optimized TiO2–Cu2O nanocomposite (TC-20) exhibits a hydrogen evolution rate of 7139.02 μmol g−1 h−1, which is nearly 7 times that of pristine TiO2. Based on the photoluminescence spectra and photo/electrochemical measurements, the boosted photocatalytic H2 evolution performance comes from the promoted separation efficiency of photoinduced electron–hole pairs, which originates from the formed p–n heterojunction of the TiO2–Cu2O nanocomposite.
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