One step synthesis of carboxymethyl cellulose/graphene oxide composites for removal of copper ion from aqueous solution

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

Diamond and Related Materials Pub Date : 2024-10-16 DOI:10.1016/j.diamond.2024.111670

Jinjin Cui , Hui Chen , Ying Chen , Xiaojuan Zhou

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Abstract

Excessive heavy metal ions in the environment often have an impact on plant growth and human health. In this study, carboxymethyl cellulose/graphene oxide composites (CMC/GO) were prepared by a simple solution blending evaporation method to remove copper ions. The structure of CMC/GO was characterized by Fourier transform infrared spectroscopy, X-ray diffraction, Scanning electron microscope, Brunauer–Emmett–Teller, and X-rayphotoelectron spectroscopy. The results showed that the maximum adsorption capacity of the adsorbent CMC/GO reached 26.05 mg/g, when the pH of the solution was 5, the initial concentration of copper ions was 80 mg/L, and the dosage of the adsorbent was 0.4 g. The adsorption of copper ions onto CMC/GO is validated by the pseudo-second-order kinetics model (R = 0.99949), and the adsorption isotherm data was fitted well with the Langmuir isotherm (R = 0.99989). Thermodynamic data showed that the adsorption process of copper ions by composite CMC/GO is a spontaneous endothermic reaction (ΔG < 0, ΔH > 0). Moreover, the adsorbent showed better recyclability and the adsorption efficiency can still reach 85.0 % after 5 adsorption-desorption cycles.

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一步法合成用于去除水溶液中铜离子的羧甲基纤维素/氧化石墨烯复合材料

环境中过量的重金属离子通常会对植物生长和人类健康造成影响。本研究采用简单的溶液混合蒸发法制备了羧甲基纤维素/氧化石墨烯复合材料（CMC/GO），用于去除铜离子。通过傅立叶变换红外光谱、X 射线衍射、扫描电子显微镜、Brunauer-Emmett-Teller 和 X 射线光电子能谱对 CMC/GO 的结构进行了表征。结果表明，当溶液的 pH 值为 5、铜离子的初始浓度为 80 mg/L、吸附剂的用量为 0.4 g 时，CMC/GO 对铜离子的最大吸附量达到 26.05 mg/g。热力学数据表明，CMC/GO 复合材料对铜离子的吸附过程是一个自发的内热反应（ΔG <0，ΔH >0）。此外，该吸附剂具有较好的可回收性，吸附-解吸循环 5 次后，吸附效率仍可达 85.0%。

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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.