ZnO/carbon quantum dots nanocomposites derived from Moringa oleifera gum: An improved catalytic vitiation of methylene blue dye

IF 5.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Research Bulletin Pub Date : 2024-09-22 DOI:10.1016/j.materresbull.2024.113106

Shehla Parveen , Nida Latif , Ghayoor Abbas Chotana , Aqsa Kanwal , Shahid Hussain , Mohamed A. Habila , Amjad Iqbal , Rajesh Kumar Manavalan , Nosheen Farooq

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Abstract

The present study reports on the enhanced photocatalytic and chemocatalytic performance of ZnO/carbon dots (CDs) nanocomposites for the degradation of methylene blue (MB) dye. Carbon quantum dots were prepared by employing Moringa oleifera gum powder as a carbon source through the hydrothermal process. ZnO/CQDs nanocomposites were synthesized by dispersing ZnO nanoparticles into carbon quantum dot solution. The obtained samples were characterized by using techniques like FTIR, UV, and SEM with EDX analysis. When the methylene blue (MB) dye was exposed to visible light at room temperature, the ZnO/CQDs nanocomposites photocatalyst exhibited more photocatalytic and chemocatalytic activity than the pure ZnO nanoparticle photocatalyst. Antibacterial activity and cytotoxic assay of ZnO/CQDs nanocomposites were also investigated. In addition to protecting the environment, the purpose of this research is to create a new visible-light photocatalyst for the effective treatment of organic wastewater.

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从辣木树胶中提取的氧化锌/碳量子点纳米复合材料：改进亚甲基蓝染料的催化矾化性能

本研究报告了氧化锌/碳点（CD）纳米复合材料在降解亚甲基蓝（MB）染料方面增强的光催化和化学催化性能。碳量子点是通过水热法采用辣木树胶粉作为碳源制备的。将氧化锌纳米粒子分散到碳量子点溶液中，合成了氧化锌/碳量子点纳米复合材料。利用傅立叶变换红外光谱（FTIR）、紫外光谱（UV）、扫描电子显微镜（SEM）和电子衍射吸收光谱（EDX）分析等技术对得到的样品进行了表征。当亚甲基蓝（MB）染料在室温下暴露于可见光时，ZnO/CQDs 纳米复合材料光催化剂比纯 ZnO 纳米粒子光催化剂表现出更高的光催化活性和化学催化活性。此外，还研究了 ZnO/CQDs 纳米复合材料的抗菌活性和细胞毒性。除了保护环境之外，这项研究的目的还在于创造一种新的可见光光催化剂，用于有效处理有机废水。

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来源期刊

Materials Research Bulletin 工程技术-材料科学：综合

CiteScore

9.80

自引率

5.60%

发文量

372

审稿时长

42 days

期刊介绍： Materials Research Bulletin is an international journal reporting high-impact research on processing-structure-property relationships in functional materials and nanomaterials with interesting electronic, magnetic, optical, thermal, mechanical or catalytic properties. Papers purely on thermodynamics or theoretical calculations (e.g., density functional theory) do not fall within the scope of the journal unless they also demonstrate a clear link to physical properties. Topics covered include functional materials (e.g., dielectrics, pyroelectrics, piezoelectrics, ferroelectrics, relaxors, thermoelectrics, etc.); electrochemistry and solid-state ionics (e.g., photovoltaics, batteries, sensors, and fuel cells); nanomaterials, graphene, and nanocomposites; luminescence and photocatalysis; crystal-structure and defect-structure analysis; novel electronics; non-crystalline solids; flexible electronics; protein-material interactions; and polymeric ion-exchange membranes.