Surfactant-mediated synthesis of single-crystalline Bi3O4Br nanorings with enhanced photocatalytic activity. Issue 30 (20th July 2017)

• Record Type: Journal Article
• Authors: Xiong, Xuyang; Zhou, Tengfei; Liu, Xiufan; Ding, Shuoping; Hu, Juncheng
• Is Part Of: Journal of materials chemistry. Volume 5:Issue 30(2017)
• Page Start: 15706
• Page End: 15713
• Publication Date: 2017-07-20
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c7ta04507g
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : We present a surfactant-mediated approach to the production of single-crystal Bi3 O4 Br nanorings via a simple solvothermal method. Abstract : We present a surfactant-mediated approach to the production of single-crystal Bi3 O4 Br nanorings via a simple solvothermal method. The ring-like morphology is rare among bismuth oxyhalides, and the reaction pathways are superior to traditional chemical transformations. In detail, Bi3 O4 Br nanorings are prepared in three stages: (1) the formation of precursors, (2) selective etching and (3) Ostwald ripening. During these steps, the extra usage of templates is avoided and a series of useful intermediates are obtained. Besides, this method can be extended to fabricate other bismuth oxyhalide nanorings. Under visible-light irradiation, all of our samples are photo-activated. The Bi3 O4 Br nanorings exhibit an efficient oxygen-evolution rate (72.54 μmol h −1 ) and pollutant degradation rate (4.71 × 10 −2 g min −1 m −2 ), which can be attributed to their unique ring structures and band potentials. Thus, the surfactant-mediated chemical conversion strategy not only paves a new way to enhance the photocatalytic activity of bismuth oxyhalides, but also provides an important large-scale route for designing other nanomaterials with ring-like structures.