Synthesis of Au/CdSe Janus Nanoparticles with Efficient Charge Transfer for Improving Photocatalytic Hydrogen Generation

Metal-semiconductor heterostructures integrate multiply functionalities beyond those of their individual counterparts. Great efforts have been devoted to synthesize heterostructures with controlled morphologies for the applications ranging from photocatalysis to photonic nanodevices. Beyond the morp...

Full description

Saved in:
Bibliographic Details
Published in:Nanoscale research letters 2019-11, Vol.14 (1), p.349-9, Article 349
Main Authors: Liu, Xiao-Dan, Chen, Kai, Ma, Song, Hao, Zhong-Hua, Liang, Shan, Zhou, Li, Wang, Qu-Quan
Format: Article
Language:English
Subjects:
Au/CdSe Janus nanospheres
Cadmium selenides
Catalytic activity
Charge transfer
Chemistry and Materials Science
Gold
Heterostructures
Highly efficient photocatalysis
Hydrogen production
Interface
Low Dimensional Electric and Photonic Materials and Devices
Materials Science
Molecular Medicine
Morphology
Nano Express
Nanochemistry
Nanoparticles
Nanoscale Science and Technology
Nanospheres
Nanotechnology
Nanotechnology and Microengineering
Nanotechnology devices
Photocatalysis
Photonics
Synthesis
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Metal-semiconductor heterostructures integrate multiply functionalities beyond those of their individual counterparts. Great efforts have been devoted to synthesize heterostructures with controlled morphologies for the applications ranging from photocatalysis to photonic nanodevices. Beyond the morphologies, the interface between two counterparts also significantly influences the performance of the heterostructures. Here, we synthesize Au/CdSe Janus nanostructures consisting of two half spheres of Au and CdSe separated by a flat and high-quality interface. Au/CdSe with other morphologies could also be prepared by adjusting the overgrowth conditions. The photocatalytic hydrogen generation of the Au/CdSe Janus nanospheres is measured to be 3.9 times higher than that of the controlled samples with CdSe half-shells overgrown on the Au nanospheres. The highly efficient charge transfer across the interface between Au and CdSe contributes to the improved photocatalytic performance. Our studies may find the applications in the design of heterostructures with highly efficient photocatalytic activity.
ISSN:1931-7573
1556-276X
DOI:10.1186/s11671-019-3185-6