Phosphate-doped silica gel nanocomposites for effective uranium ion remediation from water

IF 1.5 3区 化学 Q3 CHEMISTRY, ANALYTICAL
Mohammed A. Al-Anber, Idrees F. Al-Momani, Ahmed K. Hijazi, Suresh Sagadevan, Neda’a Al-Adaileh, Hannen Daoud, Mohammad M. Allaham, Dinara Sobola
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Abstract

An efficient sodium phosphate-doped silica gel nanocomposites (SG-SDP) material was successfully produced and used to collect uranyl ions from an aqueous solution via batch sorption. The nanocomposite was characterized using ATR-FTIR, SEM, XPS, and XRD techniques, and its thermal stability was determined with TGA. The efficiency of SG-SDP to capture uranyl ions was evaluated using a variety of factors, including temperature (T), pH, contact time (t), and initial concentration (Ci). Under particular conditions (pH = 2, Ci = 1.0 mg L−1, T = 55 °C, 80 rpm, and dosage = 2 g L−1), sorption equilibrium is reached in 40 min, resulting in the greatest elimination percentage of 90%. The binding of U(VI) ions conformed to the Langmuir isotherm model (R2 > 0.999), and the interaction followed a pseudo-second-order kinetic model (R2 > 0.999). These positive results indicate that the SG-SDP nanocomposite material can be used effectively to remove diluted uranium (VI) ions from water.

Abstract Image

磷酸盐掺杂硅胶纳米复合材料对水中铀离子的有效修复
制备了一种高效的磷酸钠掺杂硅胶纳米复合材料(SG-SDP),并将其用于从水溶液中批量吸附铀酰离子。采用ATR-FTIR、SEM、XPS和XRD等技术对复合材料进行了表征,并用TGA对其热稳定性进行了表征。通过温度(T)、pH、接触时间(T)和初始浓度(Ci)等多种因素对SG-SDP捕获铀酰离子的效率进行了评价。在特定条件下(pH = 2, Ci = 1.0 mg L−1,T = 55℃,80 rpm,投加量= 2g L−1),40 min即可达到吸附平衡,最大去除率达90%。U(VI)离子的结合符合Langmuir等温线模型(R2 > 0.999),相互作用符合拟二级动力学模型(R2 > 0.999)。这些积极的结果表明,SG-SDP纳米复合材料可以有效地去除水中的铀(VI)离子。
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来源期刊
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.
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