Issue 27, 2014

Novel core–shell structured BiVO4 hollow spheres with an ultra-high surface area as visible-light-driven catalyst

Abstract

In recent years, BiVO4 has been extensively studied as a promising visible-light-driven catalyst candidate due to its great visible-light absorbing ability. In this paper, novel core–shell structured (CSS) BiVO4 hollow spheres with an ultra-high specific surface area were synthesized via a one-pot, surfactant- and template-free hydrothermal route. The as-obtained products were characterized by scanning electron microscopy, X-ray diffraction, nitrogen adsorption–desorption experimentation, Raman and UV–vis absorption spectroscopy, respectively. The formation mechanism of the BiVO4 products was proposed in terms of the morphological evolution with prolonging the reaction time. The as-prepared CSS BiVO4 hollow spheres similar to Russian dolls were comprised of an inner core and an open outer shell, leading to an ultra-high specific surface area about fifty times that of solid spherical counterparts fabricated by the traditional solid-state reaction method. As a result, the CSS BiVO4 hollow spheres exhibited a superior photocatalytic activity over not only solid BiVO4 spheres but also other morphological products such as biscuits and plates in the photodegradation of rhodamine B under visible-light irradiation.

Graphical abstract: Novel core–shell structured BiVO4 hollow spheres with an ultra-high surface area as visible-light-driven catalyst

Article information

Article type
Paper
Submitted
20 Feb 2014
Accepted
09 Apr 2014
First published
09 Apr 2014

CrystEngComm, 2014,16, 6059-6065

Author version available

Novel core–shell structured BiVO4 hollow spheres with an ultra-high surface area as visible-light-driven catalyst

Y. Lu, Y. Luo, H. Xiao and S. Fu, CrystEngComm, 2014, 16, 6059 DOI: 10.1039/C4CE00379A

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