Qomariyah Lailatul, Rahmatika Annie Mufyda, Sanjaya Eli Hendrik, Widiyastuti W, Hirano Tomoyuki, Van Pham Tung, Putra Nicky Rahmana
Department of Industrial Chemical Engineering, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia.
Department of Bioresources Technology and Veterinary, Vocational College, Gadjah Mada University, Sekip Unit 1 Catur Tunggal, Depok Sleman, D.I. Yogyakarta 55281, Indonesia.
Int J Biol Macromol. 2025 May;305(Pt 1):141134. doi: 10.1016/j.ijbiomac.2025.141134. Epub 2025 Feb 15.
The bionanomaterial for wastewater treatment attracts interest due to it is nontoxic and biodegradable. However, it has limitations cause of the weak chemical interaction, narrow surface area, and reusability of this material. In this study, a novel bionanomaterial for wastewater treatment was developed using a nontoxic and biodegradable carboxymethyl cellulose (CMC) base. To overcome the limitations of weak chemical interactions affecting its adsorption capacity and reusability, chitosan (CS) and ZnO nanoparticles with photocatalytic properties were incorporated. The resulting ZnO/CS/CMC nanocomposite exhibits dual functionality as a photocatalyst and adsorbent, enhancing the removal of methylene blue (MB) from wastewater. The material's morphology and physicochemical properties were thoroughly characterized using SEM, TEM, FTIR, XRD, BET, and DLS techniques. The molar ratio of ZnO (0.5-1.5) significantly influenced the nanocomposite's characteristics, with higher ZnO ratios producing a highly homogeneous spherical morphology and increased surface area. At a ZnO ratio of 1.5, the nanocomposite achieved outstanding photocatalytic performance, degrading 99.5 % of MB in just 60 min under sunlight irradiation. Additionally, the highest adsorption capacity of 4.66 mg g followed the Langmuir isotherm model. This study highlights the enhanced MB removal efficiency due to the synergistic effect of ZnO particles and the supportive matrix. The developed material offers an eco-friendly, efficient, and sustainable solution for wastewater treatment, combining high performance with the benefits of biodegradability and reusability.
用于废水处理的生物纳米材料因其无毒且可生物降解而备受关注。然而，由于这种材料的化学相互作用较弱、表面积狭窄以及可重复使用性等原因，它存在局限性。在本研究中，使用无毒且可生物降解的羧甲基纤维素（CMC）基体制备了一种新型的用于废水处理的生物纳米材料。为了克服影响其吸附容量和可重复使用性的弱化学相互作用的局限性，引入了具有光催化性能的壳聚糖（CS）和ZnO纳米颗粒。所得的ZnO/CS/CMC纳米复合材料具有光催化剂和吸附剂的双重功能，提高了从废水中去除亚甲基蓝（MB）的能力。使用扫描电子显微镜（SEM）、透射电子显微镜（TEM）、傅里叶变换红外光谱（FTIR）、X射线衍射（XRD）、比表面积分析仪（BET）和动态光散射（DLS）技术对该材料的形态和物理化学性质进行了全面表征。ZnO的摩尔比（0.5 - 1.5）对纳米复合材料的特性有显著影响，较高的ZnO比例会产生高度均匀的球形形态并增加表面积。在ZnO比例为1.5时，该纳米复合材料在阳光照射下仅60分钟内就实现了出色的光催化性能，降解了99.5%的MB。此外，最高吸附容量为4.66 mg/g，遵循朗缪尔等温线模型。本研究强调了由于ZnO颗粒与支撑基质的协同作用而提高的MB去除效率。所开发的材料为废水处理提供了一种生态友好、高效且可持续的解决方案，兼具高性能以及生物可降解性和可重复使用性的优点。
