Facile synthesis of a novel BaSnO3/MXene nanocomposite by electrostatic self-assembly for efficient photodegradation of 4-nitrophenol

• DOI: 10.1016/j.envres.2021.111949
• Publication Date: 2021-08-31T15:32:19Z
• Authors: Shu Chen; Rui Liu; Zeyuan Kuai; Xuezhi Li; Shanshan Lian; Donglin Jiang; Jianfeng Tang; Ling Li; Ruoxi Wu; Chang Peng
• Keywords: Nitrophenols; Photolysis; 13. Climate action; Static Electricity; 02 engineering and technology; 0210 nano-technology; 01 natural sciences; 7. Clean energy; Catalysis; 0105 earth and related environmental sciences; Nanocomposites; 0104 chemical sciences

Photocatalysis is regarded as one of the most effective strategies for the removal of the toxic organic pollutants from aqueous solutions. However, a lack of the efficient photocatalysts prevents the widespread practical application. Herein, the electrostatic self-assembly method has been designed for facile synthesis of a novel BaSnO3/PDDA/MXene (BSO/P/MX) nanocomposite as high efficient photocatalyst. In this nanocomposite, the BaSnO3 (BSO), poly (dimethyl-diallylammonium chloride) (PDDA) and MXene (Ti3C2Tx) act as the active species, structure stabilizer and efficient electron transfer medium, respectively. Due to the strong synergy of the nanocomposite, the electron-transferring ability as well as the charge separation efficiency is boosted and thus high catalytic activity achieves towards the photodegradation of 4-nitrophenol. The superior degradation rate of 98.8% and a rate constant K of 0.09113 min-1 have been realized within 75 min of ultraviolet (UV) light irradiation over the BSO/P/MX-8% catalyst. This as-prepared nanocomposite with the excellent catalytic activity can be employed as a promising photocatalyst for treating the organic pollutants from aqueous solutions.