AI Article Synopsis
- A p-n heterojunction composite of CuO and TiO nanoparticles was created using a simple one-pot hydrothermal method, resulting in a uniform distribution of TiO on CuO surfaces.
- The optimal composite, labeled CT-60 with 60 wt% TiO, showed a significant increase in hydrogen production, achieving 3002.5 μmol g with a retention rate of 92.6% over three cycles.
- The enhanced photocatalytic activity is attributed to the formation of a p-n heterojunction, which improved light absorption and reduced the recombination of electron-hole pairs, making it a promising candidate for efficient solar energy applications.
Article Abstract
A CuO/TiO p-n heterojunction composite was created via a facile, controllable, one-pot hydrothermal method based on cubic CuO and TiO nanoparticles in the presence of dioctyl sulfosuccinate sodium salt (AOT) surfactant. The TiO nanoparticles with an average edge length of ∼10.1 nm were uniformly distributed on the crystal surface of a CuO cube {100}. The photocatalytic performance of the composite was effectively tuned by controlling the amount of TiO. The CuO/TiO (60 wt%, labeled as CT-60) exhibits the highest enhanced photocatalytic activity in hydrogen production with H evolution of 3002.5 μmol g. The yield remained around 92.6% after three cycles. Hydrogen production of the CT-60 is 103 and 8.5 fold higher than the cubic CuO and TiO nanoparticles, respectively. The improvement in photocatalytic performance could be attributed to the formation of p-n heterojunction. Furthermore, the interface effect of CuO and TiO caused a broader absorbance in the visible-light region and the lower recombination of photogenerated electron-hole pairs. It is believed that the CuO/TiO p-n heterojunction composites could provide an alternative method to design highly efficient photocatalysts for solar energy.
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| http://dx.doi.org/10.1088/1361-6528/aafccb | DOI Listing |
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