基于综合实验和理论计算的 β-环糊精/石墨烯的 Co2+ 吸附特性研究

IF 1.5 3区化学 Q3 CHEMISTRY, ANALYTICAL

Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2024-08-03 DOI:10.1007/s10967-024-09668-3

Ping Bao, Xiaowei Wang, Jinfeng Men, Zhilin Hu

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引用次数: 0

摘要

为了有效去除放射性废水中的Co2+，合成了β-环糊精/氧化石墨烯（β-CD/GO）。通过静态吸附实验确定了影响水中 Co2+ 吸附的因素，并利用密度泛函理论（DFT）讨论了材料的合成和吸附机理。结果表明，β-CD和GO主要以酯基和氢键结合，β-CD/GO对Co2+的吸附属于单分子层化学吸附，分子内扩散是影响吸附速率的主要因素。在适当的条件下，Co2+ 的吸附容量可达 95.83 mg/g，但会受到干扰离子的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Study on Co2+ adsorption properties of β-cyclodextrin/graphene based on comprehensive experiments and theoretical calculation

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Study on Co2+ adsorption properties of β-cyclodextrin/graphene based on comprehensive experiments and theoretical calculation

In order to effectively remove Co²⁺ from radioactive wastewater, β-cyclodextrin/graphene oxide (β-CD/GO) was synthesized. The factors affecting the adsorption of Co²⁺in water were determined by static adsorption experiments, and the synthesis and adsorption mechanism of the materials were discussed by using Density Functional Theory (DFT). The results show that β-CD and GO are mainly bonded by ester group and hydrogen bond, the adsorption of Co²⁺ by β-CD/GO belongs to single molecular layer chemisorption, and the intramolecular diffusion is the main factor of affecting the adsorption rate. The adsorption capacity of Co²⁺ can reach 95.83 mg/g under appropriate conditions, but it will be affected by interference ions.

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来源期刊

Journal of Radioanalytical and Nuclear Chemistry 化学-分析化学

CiteScore

2.80

自引率

18.80%

发文量

504

审稿时长

2.2 months

期刊介绍： An international periodical publishing original papers, letters, review papers and short communications on nuclear chemistry. The subjects covered include: Nuclear chemistry, Radiochemistry, Radiation chemistry, Radiobiological chemistry, Environmental radiochemistry, Production and control of radioisotopes and labelled compounds, Nuclear power plant chemistry, Nuclear fuel chemistry, Radioanalytical chemistry, Radiation detection and measurement, Nuclear instrumentation and automation, etc.