Journal article
Enhancement of charge separation in ferroelectric heterogeneous photocatalyst Bi4(SiO4)3/Bi2SiO5 nanostructures
A Al-Keisy, L Ren, T Zheng, X Xu, M Higgins, W Hao, Y Du
Dalton Transactions | ROYAL SOC CHEMISTRY | Published : 2017
DOI: 10.1039/c7dt03193a
Abstract
The photocatalytic activity of ferroelectric materials is highly influenced by the main direction of charge separation, originating from spontaneous polarization. In this work, unique bismuth silicate based zero-dimensional (0D)/two-dimensional (2D) heterogeneous nanostructures were successfully constructed. In contrast to either individual pristine phase, this heterogeneous structure exhibited much enhanced photocatalytic activity towards the degradation of Rhodamine B and phenol. The synergistic effects of high polarization in 2D ferroelectric Bi2SiO5 nanosheets and the band bending at the 0D-2D interface of the heterostructures have been proved to accelerate the photoinduced charge separa..
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Awarded by Australian Research Council
Funding Acknowledgements
This work is supported by the Australian Research Council (ARC) through Discovery Projects (DP160102627 and DP170101467), the National Natural Science Foundation of China (Grant No. 51472016 and 51672018), and a BUAA-UOW Joint Research Centre Small Grant. The authors acknowledge the service provided by the Electron Microscopy Centre at the University of Wollongong. The authors thank Dr T. Silver and A. Nattestad for their valuable comments on this work.