Drastic Enhancement Of Photoelectrochemical Water Splitting Performance Over Plasmonic Al@Tio2 Heterostructured Nanocavity Arrays
Keywords
Aluminum; Heterostructure; Photoelectrochemical water splitting; Plasmonic; TiO 2
Abstract
Herein, we presented nonprecious plasmonic Al@TiO2 heterostructures for efficient photoelectrochemical (PEC) water splitting by controllably isolating Aluminum (Al) nanoparticles (NPs) individually into TiO2 nanocavity arrays (NCAs). Compared with bare TiO2, the Al@TiO2 shows the most prominently enhanced PEC performance under solar light illumination. The significantly enhanced PEC activity of Al@TiO2 photoanode is attributed to the localized surface plasmonic resonance (LSPR) induced electromagnetic field enhancement in UV–visible region and photoinduced hot carrier of Al NPs. Moreover, the naturally formed Al2O3 ultrathin layer can act as a protective layer by restraining Al NPs corrosion and reducing the surface charge recombination. This study reveals that a novel plasmonic system can be rationalized by forming isolated earth-abundant metal into the nanostructured semiconductor film with a highly ordered morphology, which opens a new paradigm for advanced catalyst design for PEC water splitting.
Publication Date
9-1-2018
Publication Title
Nano Energy
Volume
51
Number of Pages
400-407
Document Type
Article
Personal Identifier
scopus
DOI Link
https://doi.org/10.1016/j.nanoen.2018.06.083
Copyright Status
Unknown
Socpus ID
85049301574 (Scopus)
Source API URL
https://api.elsevier.com/content/abstract/scopus_id/85049301574
STARS Citation
Li, Zhao; Shi, Li; Franklin, Daniel; Koul, Supriya; and Kushima, Akihiro, "Drastic Enhancement Of Photoelectrochemical Water Splitting Performance Over Plasmonic Al@Tio2 Heterostructured Nanocavity Arrays" (2018). Scopus Export 2015-2019. 9716.
https://stars.library.ucf.edu/scopus2015/9716