Efficient anchoring of SrTiO 3 on the cracked surface of carbonized bacterial cellulose for enhanced photocatalytic acti
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ORIGINAL RESEARCH
Efficient anchoring of SrTiO3 on the cracked surface of carbonized bacterial cellulose for enhanced photocatalytic activities Man Zhou . Jingwen Chen . Mengting Jiang . Yakang Zhang . Qian Liang . Song Xu . Chao Yao . Zhongyu Li
Received: 23 January 2020 / Accepted: 18 May 2020 Ó Springer Nature B.V. 2020
Abstract A series of thickness-controlled SrTiO3 (commonly abbreviated ST) anchored on carbonized bacterial cellulose (CBC) was successfully prepared by a novel route of freeze-drying assisted crystallization/carbonization. For the first time, the cross-linked bacterial cellulose served as a carbon source as well as structure-directing scaffold for the construction of ST/ CBC composites. Characterizations exhibited cracks and defects on the surface of CBC which provided ideal anchoring sites for the dispersion and crystallization of ST. Additionally, the relationship between morphology and photocatalytic activity of ST/CBC was carefully investigated by photocatalytic reduction
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s10570-020-03246-y) contains supplementary material, which is available to authorized users. M. Zhou J. Chen M. Jiang Y. Zhang Q. Liang S. Xu C. Yao Z. Li (&) Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China 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
of potassium dichromate (K2Cr2O7) and degradation of tetracycline in water. This unique biomass-derived carbon fibers provide an ideal platform for further design of perovskite based materials with enhanced catalytic performance. Keywords Bacterial cellulose SrTiO3 Biomass Shape-controlled Photocatalysis
Introduction During the past decades of materials sciences and technologies, TiO2 has been one of the most widely studied materials for photocatalysis because of its easy availability, high stability, and non-toxicity (Linsebigler et al. 1995; Islam et al. 2020). In order to improve the catalytic performance of TiO2, many efforts have been devoted including noble metal deposition (Islam et al. 2018), photosensitization (Zhu et al. 2007), semiconductor recombination (Ansari et al. 2019), and ion doping (Qian et al. 2018). Among these modification methods to solve the intrinsic problems of pure TiO2 (Zhang et al. 2018a, b), introducing extraneous ions to synthesize perovskite-type titanates such as CaTiO3 (Yang et al. 2010), SrTiO3 (Phoon et al. 2019), BaTiO3 (Demiro¨rs and Imhof 2009, In2TiO5 (Liu et al. 2011), and PbTiO3 (Liu et al. 2018) exhibited great potential. It is noteworthy that the nanostructured SrTiO3 with cubic
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phase has drawn much attention since the early
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