Biomass-based perovskite/graphene oxide composite for the removal of organic pollutants from wastewater

IF 5.1 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2024-09-19 DOI:10.1016/j.ceramint.2024.09.249

Shimaa M. Ali , Basma Ashour , Mohamed G. Farahat , Rabab M. El-Sherif

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Abstract

Water pollution is a critical issue that affects both human health and the environment. Biomass-based LaFeO₃ is prepared by the microwave-assisted method using rice straw as a cellulose source. Then LaFeO₃/graphene oxide (GO) composite is prepared by ultrasonication to facilitate the perovskite-GO binding. Raman and FTIR spectra of the prepared composite identify the presence of the perovskite, biochar, cellulose and GO oxide phases and proves the surface functional groups interactions. Transmission electron microscope image shows that the GO sheets are homogeneous covered with the perovskite nanoparticles. The adsorption performance of the LaFeO₃/GO composite for the removal of methylene blue (MB) and congo red (CR) dyes from aqueous solution is optimized. Adsorption follows pseudo 2nd order kinetic model and Freundlich isotherm, with maximum adsorption capacities of 319.5 and 416.7 mg/g for MB and CR, respectively. These values are higher than those reported for magnetic GO composites, indicating the excellent adsorption ability of the proposed perovskite/GO composite. A thermodynamic study shows that the adsorption of MB is exothermic, while it is endothermic for CR and combines physisorption and chemisorption characteristics for both dyes. The proposed adsorbent shows a good performance in the presence of NaCl interferent, with the possibility of regeneration and efficient successive reuse.

Abstract Image

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基于生物质的 Perovskite/Graphene Oxide 复合材料用于去除废水中的有机污染物

水污染是影响人类健康和环境的一个关键问题。以水稻秸秆为纤维素源，采用微波辅助法制备生物质基 LaFeO3。然后通过超声波处理制备出 LaFeO3/氧化石墨烯（GO）复合材料，以促进包晶石-GO 的结合。所制备复合材料的拉曼光谱和傅立叶变换红外光谱显示了包晶、生物炭、纤维素和 GO 氧化物相的存在，并证明了表面官能团之间的相互作用。透射电子显微镜图像显示，GO 片均匀地覆盖着包晶纳米颗粒。对 LaFeO3/GO 复合材料从水溶液中去除亚甲基蓝（MB）和刚果红（CR）染料的吸附性能进行了优化。吸附遵循伪二阶动力学模型和 Freundlich 等温线，对 MB 和 CR 的最大吸附容量分别为 319.5 和 416.7 mg/g。这些数值高于磁性 GO 复合材料的相关报道，表明所提出的包晶石/GO 复合材料具有出色的吸附能力。热力学研究表明，对 MB 的吸附是放热的，而对 CR 的吸附是内热的，并且两种染料都具有物理吸附和化学吸附特性。所提出的吸附剂在氯化钠干扰物的存在下表现出良好的性能，并有可能再生和有效地连续重复使用。

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.