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IF 4.3 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials Pub Date : 2024-09-16 DOI:10.1016/j.diamond.2024.111592

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引用次数: 0

摘要

向水资源排放染料是一个令人担忧的问题，对环境构成威胁。本研究旨在合成纳米催化剂，即 BiO2-x/rGO-CNT/ZnO 纳米复合材料，用于高效光催化降解水晶紫染料。利用 XRD、拉曼光谱技术、傅立叶变换红外光谱、XPS、FESEM、EDAX、TEM、HRTEM 和紫外-可见光谱分析了纳米复合材料。紫外-可见光谱证实了纳米颗粒的带边位置，表明其在扩大的可见光区域有明显的吸收。与 BiO2-x/rGO-CNT 纳米复合材料相比，BiO2-x/rGO-CNT/ZnO 纳米复合材料的光催化效率更高，在可见光下 5 小时内降解了 92.39 % 的水晶紫染料。在最佳 pH 值为 12 时，BiO2-x/rGO-CNT 和 BiO2-x/rGO-CNT/ZnO 纳米复合材料的光催化降解动力学研究遵循伪一阶速率动力学，速率常数分别为 0.040 h-1 和 0.048 h-1。 BiO2-x/rGO-CNT/ZnO 纳米复合材料增强的降解特性使其成为废水处理的合适替代品。

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Efficient photocatalytic degradation of crystal violet using quaternized reduced graphene oxide nanocomposite

The discharge of dyes into water resources is an alarming issue that poses a threat to the environment. This study aims to synthesize nanocatalysts, i.e., BiO_2-x/rGO-CNT/ZnO nanocomposite, for efficient photocatalytic degradation of crystal violet dye. The nanocomposites were analyzed utilizing XRD, Raman spectroscopy techniques, FTIR, XPS, FESEM, EDAX, TEM, HRTEM, and UV–vis spectra. The band edge position of the nanoparticles was confirmed from the UV–vis spectrum, indicating significant absorption in the expanded visible-light region. The BiO_2-x/rGO-CNT/ZnO nanocomposite showed enhanced photocatalytic efficiency in comparison with BiO_2-x/rGO-CNT nanocomposite by degrading 92.39 % of crystal violet dye in 5 h under visible light. The kinetic investigation of photocatalytic degradation for BiO_2-x/rGO-CNT and BiO_2-x/rGO-CNT/ZnO nanocomposite followed pseudo-first-order rate kinetics with rate constants of 0.040 h⁻¹ and 0.048 h⁻¹ was obtained for optimum pH 12. The enhanced degradation characteristics of BiO_2-x/rGO-CNT/ZnO nanocomposite, make it a suitable alternative for wastewater treatment.

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来源期刊

Diamond and Related Materials 工程技术-材料科学：综合

CiteScore

6.00

自引率

14.60%

发文量

702

审稿时长

2.1 months

期刊介绍： DRM is a leading international journal that publishes new fundamental and applied research on all forms of diamond, the integration of diamond with other advanced materials and development of technologies exploiting diamond. The synthesis, characterization and processing of single crystal diamond, polycrystalline films, nanodiamond powders and heterostructures with other advanced materials are encouraged topics for technical and review articles. In addition to diamond, the journal publishes manuscripts on the synthesis, characterization and application of other related materials including diamond-like carbons, carbon nanotubes, graphene, and boron and carbon nitrides. Articles are sought on the chemical functionalization of diamond and related materials as well as their use in electrochemistry, energy storage and conversion, chemical and biological sensing, imaging, thermal management, photonic and quantum applications, electron emission and electronic devices. The International Conference on Diamond and Carbon Materials has evolved into the largest and most well attended forum in the field of diamond, providing a forum to showcase the latest results in the science and technology of diamond and other carbon materials such as carbon nanotubes, graphene, and diamond-like carbon. Run annually in association with Diamond and Related Materials the conference provides junior and established researchers the opportunity to exchange the latest results ranging from fundamental physical and chemical concepts to applied research focusing on the next generation carbon-based devices.