环境条件下氨基功能化SBA-15光固定化水溶液中的铀酰

IF 1.6 3区化学 Q3 CHEMISTRY, ANALYTICAL

Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2025-08-21 DOI:10.1007/s10967-025-10325-6

Zhenfei Ou, Yubao Zhao

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引用次数: 0

摘要

铀的高效回收对保持水体清洁和保护环境具有重要意义。本研究通过对水中铀酰的吸附，合成氨基功能化SBA-15 （NH2-SBA-15）用于可见光固定化铀酰。在模拟酸性U（VI）废水（pH = 5.0, C0 = 50 mg/L）中，光照射80 min，铀酰的回收率为92.9%。XRD和XPS表征表明，铀酰已转化为水合过氧化铀酰。对照实验表明，氨基的引入促进了U（VI）对H2O2的吸附和利用，从而促进了（UO2）O2⋅4H2O的原位生成。

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Photoimmobilization of uranyl from aqueous solution by amino-functionalized SBA-15 under ambient conditions

The efficient recovery of uranium is of great significance for keeping water clean and protecting our environment. In this study, amino-functionalized SBA-15 (NH₂-SBA-15) was synthesized for visible light-driven immobilization of uranyl after adsorption of uranyl from water. In simulated acidic U(VI) wastewater (pH = 5.0, C₀ = 50 mg/L), the recovery of uranyl was 92.9% under 80 min of light irradiation. XRD and XPS characterizations show uranyl species have transformed into hydrated uranyl peroxide. Controlled experiments demonstrated that introduction of the amino groups promote U(VI) adsorption and utilization of H₂O₂, thereby facilitating in-situ generation of (UO₂)O₂⋅4H₂O.

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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.