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Title: Facile synthesis of a ZnO–BiOI p–n nano-heterojunction with excellent visible-light photocatalytic activity
Authors: Zhang, Mengyuan
Qin, Jiaqian
Yu, Pengfei
Zhang, Bing
Ma, Mingzhen
Zhang, Xinyu
Liu, Riping
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Other author: Chulalongkorn University. Metallurgy and Materials Science Research Institute
Issue Date: 5-Mar-2018
Publisher: Beilstein-Institut Zur Forderung der Chemischen Wissenschaften
Citation: Beilstein Journal of Nanotechnology. Vol.9, Issue 1 (2018), p. 789-800
Abstract: In this paper, an efficient method to produce a ZnO/BiOI nano-heterojunction is developed by a facile solution method followed by calcination. By tuning the ratio of Zn/Bi, the morphology varies from nanoplates, flowers to nanoparticles. The heterojunction formed between ZnO and BiOI decreases the recombination rate of photogenerated carriers and enhances the photocatalytic activity of ZnO/BiOI composites. The obtained ZnO/BiOI heterostructured nanocomposites exhibit a significant improvement in the photodegradation of rhodamine B under visible light (λ ≥ 420 nm) irradiation as compared to single-phase ZnO and BiOI. A sample with a Zn/Bi ratio of 3:1 showed the highest photocatalytic activity (≈99.3% after 100 min irradiation). The photodegradation tests indicated that the ZnO/BiOI heterostructured nanocomposites not only exhibit remarkably enhanced and sustainable photocatalytic activity, but also show good recyclability. The excellent photocatalytic activity could be attributed to the high separation efficiency of the photoinduced electron–hole pairs as well as the high specific area.
ISSN: 2190-4286
metadata.dc.identifier.DOI: 10.3762/bjnano.9.72
Type: Article
Appears in Collections:Chula Scholars - 2018

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