Nanomodified Geopolymers with Copper Ferrites for Methylene Blue Degradation

IF 2.8 3区 化学 Q2 CHEMISTRY, APPLIED Topics in Catalysis Pub Date : 2024-03-28 DOI:10.1007/s11244-024-01922-y
Gabriel Bezerra Silva, Fabíola da Silveira Maranhão, Fernando Gomes de Souza, Daniele Silvéria Brandão, Thiago do Nascimento Peçanha, Ellen Brito Hsia, Antonieta Middea, Roberto Costa Lima
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Abstract

The photocatalytic properties of copper ferrites can be exploited in the degradation of organic contaminants in aqueous media, such as methylene blue. The interaction of ferrites with electromagnetic radiation results in the formation of chemical species capable of acting in the degradation of methylene blue molecules. The incorporation of these nanomaterials into geopolymeric matrices makes it possible to produce polymeric nanocomposites with improved properties. Geopolymers loaded with different percentages of copper ferrites were placed in contact with a solution of methylene blue, exposed to UV light and it was possible to observe photocatalytic activity in the degradation of this dye. Analysis in a UV–Vis spectrophotometer, at the maximum absorbance wavelength of the dye equivalent to 670 nm, showed that the geopolymer loaded with 2% copper ferrites was more effective in degrading methylene blue. These results display the potential of copper ferrite-loaded geopolymers as viable photocatalysts for organic pollutant remediation.

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含铜铁氧体的纳米改性土工聚合物对亚甲蓝的降解作用
铜铁氧体的光催化特性可用于降解水介质中的有机污染物,如亚甲蓝。铁氧体与电磁辐射的相互作用会形成能够降解亚甲基蓝分子的化学物质。在土工聚合物基质中加入这些纳米材料,可以生产出性能更好的聚合物纳米复合材料。将含有不同比例铜铁氧体的土工聚合物与亚甲基蓝溶液接触,暴露在紫外线下,可以观察到降解这种染料的光催化活性。在紫外可见分光光度计中,在染料的最大吸光波长相当于 670 纳米时进行的分析表明,含有 2% 铁氧体铜的土工聚合物在降解亚甲基蓝方面更为有效。这些结果表明,含亚铁铜的土工聚合物具有作为光催化剂修复有机污染物的潜力。
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来源期刊
Topics in Catalysis
Topics in Catalysis 化学-物理化学
CiteScore
5.70
自引率
5.60%
发文量
197
审稿时长
2 months
期刊介绍: Topics in Catalysis publishes topical collections in all fields of catalysis which are composed only of invited articles from leading authors. The journal documents today’s emerging and critical trends in all branches of catalysis. Each themed issue is organized by renowned Guest Editors in collaboration with the Editors-in-Chief. Proposals for new topics are welcome and should be submitted directly to the Editors-in-Chief. The publication of individual uninvited original research articles can be sent to our sister journal Catalysis Letters. This journal aims for rapid publication of high-impact original research articles in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis.
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