Su Xiuping, Chen Wei, Han Yanna, Wang Duanchao, Yao Juming
Shaoxing University Yuanpei College, Shaoxing, Zhejiang 312000, China.
College of Textile Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China.
Appl Surf Sci. 2021 Jan 15;536:147945. doi: 10.1016/j.apsusc.2020.147945. Epub 2020 Sep 26.
In this study, the cotton fabrics/cuprous oxide-nanocellulose (CuO-NC) flexible and recyclable composite material (COCO) with highly efficient photocatalytic degradation of dyes and antibacterial properties was fabricated. Using flexible cotton fabrics as substrates, CuO were in-situ synthesized to make CuO uniformly grew on cotton fibers and were wrapped with NC. The photocatalytic degradation ability of COCO-5 was verified by use methylene blue (MB), the degradation rate was as high as 98.32%. The mechanism of COCO-5 photocatalysis and the process of dye degradation were analyzed by using electron paramagnetic resonance (EPR) spectrum, transient photocurrent response (TPR) spectrum, Fourier transform infrared (FTIR) spectroscopy and ion chromatography (IC). This study analyzed the complete path from electron excitation to dye degradation to harmless small molecules. Qualitative and quantitative experiments demonstrate that COCO-5 has high antibacterial activity against and , the highest antibacterial rate can reach 93.25%. Finally, the stability of COCO-5 was verified by recycling and mechanical performance tests. The textile-based CuO functionalized material has photocatalytic degradation and antibacterial properties, and the preparation process is simple and convenient for repeated use, so it has great potential in wastewater treatment containing dyes and bacteria.
在本研究中，制备了具有高效光催化降解染料和抗菌性能的棉织物/氧化亚铜-纳米纤维素（CuO-NC）柔性可回收复合材料（COCO）。以柔性棉织物为基底，原位合成CuO，使其在棉纤维上均匀生长并被纳米纤维素包裹。利用亚甲基蓝（MB）验证了COCO-5的光催化降解能力，降解率高达98.32%。通过电子顺磁共振（EPR）光谱、瞬态光电流响应（TPR）光谱、傅里叶变换红外（FTIR）光谱和离子色谱（IC）分析了COCO-5的光催化机理和染料降解过程。本研究分析了从电子激发到染料降解为无害小分子的完整路径。定性和定量实验表明，COCO-5对大肠杆菌和金黄色葡萄球菌具有高抗菌活性，最高抗菌率可达93.25%。最后，通过循环利用和机械性能测试验证了COCO-5的稳定性。这种基于纺织品的CuO功能化材料具有光催化降解和抗菌性能，制备过程简单且便于重复使用，因此在含染料和细菌的废水处理中具有巨大潜力。
