Anti-aggregation and morphology-controlled effects of bacterial cellulose encapsulated BiOBr for enhanced photodegradati
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ORIGINAL RESEARCH
Anti-aggregation and morphology-controlled effects of bacterial cellulose encapsulated BiOBr for enhanced photodegradation efficiency Mengting Jiang . Yakang Zhang . Jingwen Chen . Qian Liang . Song Xu . Chao Yao . Man Zhou . Zhongyu Li
Received: 7 May 2020 / Accepted: 7 August 2020 Ó Springer Nature B.V. 2020
Abstract A series of morphology-controlled BiOBr nano/macrostructures was successfully synthesized via a novel biomass-route derived from bacterial cellulose (BC). In the BiOBr/BC system compared with pure BiOBr, the three-dimensional BC scaffolds not only effectively prevented the aggregation of BiOBr units by pore confinement, but also strengthened the controllability of BiOBr size with the help of abundant anchoring sites provided by cross-linked BC fibers. By associating the results of characterizations and the photodegradation of RhB dye, the relationship
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s10570-020-03381-6) contains supplementary material, which is available to authorized users. M. Jiang Y. Zhang J. Chen Q. Liang S. Xu C. Yao M. Zhou (&) Z. Li (&) Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China e-mail: [email protected] Z. Li e-mail: [email protected] M. Zhou Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou 213164, China Z. Li School of Environmental and Safety Engineering, Changzhou University, Changzhou 213164, China
between morphology and photocatalytic activity of BiOBr/BC was investigated. In addition, a possible mechanism for the enhanced photocatalytic activity of the optimized BiOBr/BC has been discussed. This biomass-derived route provides a platform for further design of bismuth-based composite photocatalysts with potential advantages of being anti-aggregation, highly-dispersed, easily recovered and having enhanced catalytic performance. Keywords Bacterial cellulose BiOBr Biomass Shape-controlled Anti-aggregation
Introduction In view of materials for the reduction of organic pollutants, semiconductor photocatalysts have been developed as one of the most effective tools. Various structures of photocatalysts (e.g., TiO2, ZnO, CdS, and Cu2O) have drawn great attention over the past few decades. However, nano-particle agglomerates and reusability problems occur during the use of photocatalysts, resulting in lower efficiency and formation of secondary pollutants (Li et al. 2017). Designing novel photocatalyst systems with advantages of visible-light response, low-toxicity, easy availability, and high stability are still a challenge in photocatalysis research.
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Cellulose
Cellulosic materials obtained from biomass show superior advantages in terms of biodegradation, low price and reusability (Liu et al. 2011). Recently, many research groups have reported on cellulose
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