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Synthesis of AuPd nanoparticle-decorated graphene-coated ZnO nanorod arrays with enhanced photoelectrochemical performance and stability
| Content Provider | Semantic Scholar |
|---|---|
| Author | Zhang, Yuzhi Zhang, Yunlong Guo, Yunfeng Wu, Lingnan Liu, Yangqiao Song, Lixing |
| Copyright Year | 2019 |
| Abstract | AuPd nanoparticle-decorated graphene-coated ZnO nanorod (ZNR) array electrodes (ZNR@Gr/AuPd) were synthesized via electrostatic self-assembly followed by solution reduction methods. The morphologies of ZNR@Gr/AuPd were characterized with scanning electron microscopy (SEM), transmission electron microscopy (TEM), and atomic force microscopy (AFM), which indicated that ZNR was well-coated by graphene with 3–5 layers and uniformly decorated with AuPd nanoparticles (about 5 nm). UV-Vis diffuse reflectance and photoluminescence spectra were obtained to analyze the optical properties. The photoelectrochemical (PEC) properties were also evaluated; the results indicated that the photocurrent density was 2.27 mA cm−2 at 0.8 V versus Ag/AgCl, which was 7.1 times that of bare ZNR. The sample also displayed enhanced PEC stability (91.3%), which prevented photocorrosion. Finally, a proposed PEC mechanism of ZNR@Gr/AuPd was illustrated to explain the charge transfer and the role of graphene and AuPd nanoparticles in the improvement of PEC performance and stability. The ZNR@Gr/AuPd electrode shows excellent PEC performance and stability, exhibiting promising potential in the generation of H2. |
| Starting Page | 2666 |
| Ending Page | 2672 |
| Page Count | 7 |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/C8RA09028A |
| Volume Number | 9 |
| Alternate Webpage(s) | https://pubs.rsc.org/en/content/articlepdf/2019/ra/c8ra09028a |
| Alternate Webpage(s) | https://doi.org/10.1039/C8RA09028A |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
