Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 19, 2018
Previous Article Next Article

Lantern-like bismuth oxyiodide embedded typha-based carbon via in situ self-template and ion exchange–recrystallization for high-performance photocatalysis

Author affiliations

Abstract

Efficient photocatalysts induced by visible light (e.g. BiOI) have attracted wide attention for energy storage and environmental pollutant rehabilitation. In this work, N-doped bamboo tube-like carbon (NTC) was derived directly from the carbonization of bio-waste (withered typha grass) under an ammonia atmosphere. During fabrication, the BiOI/NTC material was used as a self-sacrificing template and I ions were gradually replaced by OH ions from NH3·H2O solution. Then Bi7O9I3/NTC was formed with micro-/nanohierarchical structures, which could exactly be explained by the in situ ion exchange–recrystallization mechanism. Thereinto, the well-defined hierarchical lantern-like Bi7O9I3 composed of interconnecting ultrathin nanosheets firmly embedded the “bamboo tubes” of NTC, which endow sufficient interface and high specific surface area (40 m2 g−1). The multiple synergistic effects of the lantern-like structure with ultrathin nanosheets, low iodine content and well-contacted interface endow the synthesized Bi7O9I3/NTC with outstanding visible-light catalytic activity. The results show that the obtained Bi7O9I3/NTC degraded 93.5% of methyl orange and 97.6% of rhodamine B within 2 hours, showing superior performance as compared to the pure BiOI. Therefore, our work demonstrates a controllable approach that can provide guidelines for designing optimized bismuth oxyiodide-based photocatalyst materials and has the potential for application in environmental remediation.

Graphical abstract: Lantern-like bismuth oxyiodide embedded typha-based carbon via in situ self-template and ion exchange–recrystallization for high-performance photocatalysis

Back to tab navigation

Supplementary files

Article information


Submitted
10 Feb 2018
Accepted
13 Mar 2018
First published
14 Mar 2018

Dalton Trans., 2018,47, 6692-6701
Article type
Paper

Lantern-like bismuth oxyiodide embedded typha-based carbon via in situ self-template and ion exchange–recrystallization for high-performance photocatalysis

J. Hou, R. Wei, X. Wu, M. Tahir, X. Wang, F. K. Butt and C. Cao, Dalton Trans., 2018, 47, 6692
DOI: 10.1039/C8DT00570B

Social activity

Search articles by author

Spotlight

Advertisements