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Synthesis of AuPd nanoparticle-decorated graphene-coated ZnO nanorod arrays with enhanced photoelectrochemical performance and stability
Zhang, Yuzhi; Zhang, Yunlong; Guo, Yunfeng; Wu, Lingnan; Liu, Yangqiao; Song, Lixing
2019-01-23
Source PublicationRSC ADVANCES
ISSN2046-2069
Volume9Issue:5Pages:2666
SubtypeArticle
AbstractAuPd 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 H-2.
DOI10.1039/c8ra09028a
Language英语
WOS Research AreaChemistry
PublisherROYAL SOC CHEMISTRY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27386
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Zhang, Yuzhi,Zhang, Yunlong,Guo, Yunfeng,et al. Synthesis of AuPd nanoparticle-decorated graphene-coated ZnO nanorod arrays with enhanced photoelectrochemical performance and stability[J]. RSC ADVANCES,2019,9(5):2666.
APA Zhang, Yuzhi,Zhang, Yunlong,Guo, Yunfeng,Wu, Lingnan,Liu, Yangqiao,&Song, Lixing.(2019).Synthesis of AuPd nanoparticle-decorated graphene-coated ZnO nanorod arrays with enhanced photoelectrochemical performance and stability.RSC ADVANCES,9(5),2666.
MLA Zhang, Yuzhi,et al."Synthesis of AuPd nanoparticle-decorated graphene-coated ZnO nanorod arrays with enhanced photoelectrochemical performance and stability".RSC ADVANCES 9.5(2019):2666.
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