Abstract Increased growth of textile industries leads to the tremendous accumulation of dyes on water and surrounding environments. This terrific increase of dyes is the major cause of water pollution which in turn adversely affects the aquatic lives and the balance of our ecosystem. Purpose of the present study is to report the synthesis and characterization of a composite namely zinc oxide incorporated nanocellulose (ZnO/NC) for effective degradation of an anionic dye, Congo red. Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Brunaeur, Emmett and Teller (BET) surface area analysis and scanning electron microscopy (SEM) studies have helped to characterize the composite. The optical properties of the samples were studied by UV-Visible spectroscopy. Feasibility of the photocatalyst in the degradation of Congo red was tested. Experimental conditions such as time of contact, concentration of the dye solution, catalyst dosage, pH were altered to find out the optimum conditions of degradation. The optimum pH was found to be 5.5 and dosage of ZnO/NC was optimized as 0.075 g for a dye concentration of 20 ppm. Equilibrium was attained at 120 min. The studies reveal that the photocatalyst ZnO/NC is efficient for the photodegradation of Congo red. Photodegradation was due to electron hole interaction between metal oxides and nanocellulose.

中文翻译：

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在可见光照射下，通过掺入氧化锌的纳米纤维素从水溶液中有效光催化降解有机染料

摘要 纺织工业的增长导致染料在水和周围环境中的大量积累。染料的大量增加是造成水污染的主要原因，进而对水生生物和我们生态系统的平衡产生不利影响。本研究的目的是报告复合材料的合成和表征，即掺入氧化锌的纳米纤维素 (ZnO/NC)，用于有效降解阴离子染料刚果红。傅里叶变换红外光谱 (FTIR)、X 射线衍射 (XRD)、Brunaeur、Emmett 和 Teller (BET) 表面积分析和扫描电子显微镜 (SEM) 研究有助于表征复合材料。通过紫外-可见光谱研究样品的光学性质。测试了光催化剂降解刚果红的可行性。改变接触时间、染料溶液浓度、催化剂用量、pH 等实验条件以找出最佳降解条件。发现最佳 pH 值为 5.5，ZnO/NC 的用量优化为 0.075 g，染料浓度为 20 ppm。在 120 分钟时达到平衡。研究表明，光催化剂 ZnO/NC 对刚果红的光降解是有效的。光降解是由于金属氧化物和纳米纤维素之间的电子空穴相互作用。075 g，染料浓度为 20 ppm。在 120 分钟时达到平衡。研究表明，光催化剂 ZnO/NC 对刚果红的光降解是有效的。光降解是由于金属氧化物和纳米纤维素之间的电子空穴相互作用。075 g，染料浓度为 20 ppm。在 120 分钟时达到平衡。研究表明，光催化剂 ZnO/NC 对刚果红的光降解是有效的。光降解是由于金属氧化物和纳米纤维素之间的电子空穴相互作用。