数字农科院2.0

Novel bacterial cellulose-TiO2 stabilized Pickering emulsion for photocatalytic degradation

文献类型： 外文期刊

作者： Li, Qi;Zhang, Yufei;Liu, Zengshe;Liu, Shilin;Huang, Fenghong;Zheng, Mingming

作者机构：

关键词： Photocatalytic degradation;Sustainable catalyst;Cellulose-TiO2 hybrid;Interface activation;Pickering emulsion

期刊名称： CELLULOSE

ISSN： 0969-0239

年卷期： 2022 年

页码：

收录情况： SCIE（2022版） ; EI（2022版）

摘要： Photocatalytic degradation of organic pollutants is an effective, energy-saving and renewable technique. In this study, functional oil/water (O/W) Pickering emulsions with excellent photocatalytic activity were prepared by the adsorption of nano-titanium oxide (TiO2) into bacterial cellulose (BC). The results indicate that the novel hybrid structure enhanced the interfacial diffusion rate of BC-TiO2 and further improved the mechanical strength of the obtained interfacial layer. Stable medium internal phase emulsions (MIPEs) and high internal phase emulsions (HIPEs) were also obtained by using low-loading hybrid particles. The investigation of morphology and rheological properties indicated that the shear-thinning and solid-like behaviors of the obtained emulsion systems. The photocatalytic degradation of rhodamine B was much faster in the emulsion system than p-TiO2 suspension, which was stabilized by BC-TiO2 (45 min, 90%) with respect to the case of TiO2 (90 min, 90%) and an aqueous system containing TiO2 (120 min, 53%). Therefore, this paper gives new insights to the application of BC as an efficient scaffold for loading TiO2 coupling at the oil-water interface, thus paving the way for the development of sustainable catalyst.

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