Humayoun Usama Bin, Mehmood Fazal, Hassan Yasir, Rasheed Aamir, Dastgeer Ghulam, Anwar Asad, Sarwar Nasir, Yoon Daeho
Department of Textile Engineering, University of Engineering & Technology, Lahore (Faisalabad Campus), Faisalabad 38000, Pakistan.
Department of Materials Science and Engineering, Chungnam National University, Daejeon 34134, Republic of Korea.
Molecules. 2023 Sep 6;28(18):6461. doi: 10.3390/molecules28186461.
Growing demand for sustainable wastewater treatment drives interest in advanced photocatalytic materials. Immobilized photocatalysts hold potential for addressing industrial wastewater organic pollutants, offering substantial surface area, agglomeration prevention, and easy removal. In this study, we successfully immobilized ZnO and carbon nanotubes onto a textile substrate through bilateral esterification and explored their effectiveness as a potent photocatalyst for degrading of commercial textile colorant reactive blue 4 (RB-4) colorant. Findings demonstrated significant improvements in photocatalytic performance upon integrating ZnO and CNTs into the fabric, coupled with chitosan immobilization. The immobilization process of ZnO and CNTs onto the substrate was elucidated through a proposed reaction mechanism, while the appearance of carbonyl peaks at 1719.2 cm in the composite fabric further confirmed bilateral esterification. The as-developed immobilized nano-catalyst exhibited remarkable photocatalytic efficiency with an impressive 93.54% color degradation of RB-4. This innovative approach underscores the immense potential of the ternary immobilized (ZnO/fCNT/chitosan) composite fabric for efficient photocatalytic degradation in textile coloration processes. Exploring the early-stage development of immobilized photocatalysts contributes to safer and more eco-friendly practices, addressing pressing environmental challenges effectively.
对可持续废水处理的需求不断增长，激发了人们对先进光催化材料的兴趣。固定化光催化剂在处理工业废水有机污染物方面具有潜力，它提供了较大的表面积、防止团聚且易于去除。在本研究中，我们通过双边酯化成功地将氧化锌（ZnO）和碳纳米管固定在纺织基材上，并探索了它们作为降解商业纺织染料活性蓝4（RB - 4）的高效光催化剂的有效性。研究结果表明，将ZnO和碳纳米管（CNTs）与壳聚糖固定化整合到织物中后，光催化性能有显著提高。通过提出的反应机理阐明了ZnO和CNTs在基材上的固定化过程，而复合织物中1719.2 cm处羰基峰的出现进一步证实了双边酯化。所开发的固定化纳米催化剂表现出显著的光催化效率，RB - 4的脱色率高达93.54%。这种创新方法凸显了三元固定化（ZnO/fCNT/壳聚糖）复合织物在纺织染色过程中高效光催化降解的巨大潜力。探索固定化光催化剂的早期发展有助于实现更安全、更环保的实践，有效应对紧迫的环境挑战。
