Lu Y, Liu XL, He L, Zhang YX, Hu ZY, Tian G, Cheng X, Wu SM, Li YZ, Yang XH, Wang LY, Liu JW, Janiak C, Chang GG, Li WH, Van Tendeloo G, Yang XY, Su BL (2020)
Publication Type: Journal article
Publication year: 2020
Book Volume: 20
Pages Range: 3122-3129
Journal Issue: 5
DOI: 10.1021/acs.nanolett.9b05121
A highly efficient photoenergy conversion is strongly dependent on the cumulative cascade efficiency of the photogenerated carriers. Spatial heterojunctions are critical to directed charge transfer and, thus, attractive but still a challenge. Here, a spatially ternary titanium-defected TiO2@carbon quantum dots@reduced graphene oxide (denoted as VTi@CQDs@rGO) in one system is shown to demonstrate a cascade effect of charges and significant performances regarding the photocurrent, the apparent quantum yield, and photocatalysis such as H2 production from water splitting and CO2 reduction. A key aspect in the construction is the technologically irrational junction of Ti-vacancies and nanocarbons for the spatially inside-out heterojunction. The new "spatial heterojunctions" concept, characteristics, mechanism, and extension are proposed at an atomic-/nanoscale to clarify the generation of rational heterojunctions as well as the cascade electron transfer.
APA:
Lu, Y., Liu, X.-L., He, L., Zhang, Y.-X., Hu, Z.-Y., Tian, G.,... Su, B.-L. (2020). Spatial Heterojunction in Nanostructured TiO2 and Its Cascade Effect for Efficient Photocatalysis. Nano Letters, 20(5), 3122-3129. https://doi.org/10.1021/acs.nanolett.9b05121
MLA:
Lu, Yi, et al. "Spatial Heterojunction in Nanostructured TiO2 and Its Cascade Effect for Efficient Photocatalysis." Nano Letters 20.5 (2020): 3122-3129.
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