Recent Advances in Novel Adsorbents Prepared by the Sol-Gel Method for the Removal of Uranium and Strontium from Radioactive Wastewater: A Review.
- 1School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China.
- 2Center for Water Research, Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai 519087, China.
Abstract
Uranium- and strontium-containing wastewater from nuclear industries poses a threat to the environment and human health. The sol-gel method, with its tunable composition and synthetic flexibility, is widely used to fabricate novel and high-performance adsorbents. This review covers recent progress in the sol-gel fabrication of UO₂²⁺ and Sr²⁺ adsorbents, including both inorganic and organic-inorganic hybrid materials. Reported adsorption capacities typically range from about 40 to 670 mg/g for UO₂²⁺ and from about 40 to 370 mg/g for Sr²⁺, with a few systems achieving even higher values under optimized conditions. Titanates and titanosilicates exhibit outstanding selectivity toward Sr²⁺, whereas phosphate-based materials and amidoxime-functionalized hybrids show strong affinity for UO₂²⁺. However, practical application is still hampered by high precursor costs, poor shapeability, limited long-term stability, harsh regeneration conditions, and interference from coexisting ions. Future efforts should focus on low-cost materials and shaping processes to promote the engineering applications of tailored materials via the sol-gel method.
Related
- Catalytic MOF-Based Hybrids for Wastewater Remediation: Advances, Challenges and Future Perspectives
- Carbonaceous nanomaterials for the removal of hazardous pharmaceutical contaminants from wastewater: mechanisms, recent advances, and future directions
- Adsorptive Removal of 1,2-Dichloroethane Using Novel Oleogel Adsorbents: Synthesis Strategy and Adsorption Mechanism Insight
- Molecular recognition of Atrazine, 2,4-Dichlorophenoxyacetic acid, and Chlorpyrifos by cyclodextrin-based adsorbents: insights into selective pesticide removal
- Dataset of magnetic properties, structure and synthesis of doped barium and strontium M-type hexaferrites
BibTeX
@article{jiang2026recent,
title = {{Recent Advances in Novel Adsorbents Prepared by the Sol-Gel Method for the Removal of Uranium and Strontium from Radioactive Wastewater: A Review.}},
author = {Jiayi Jiang and Jiaxue Zhao and Miaoling Chen and Diyun Chen and Minhua Su},
journal = {Gels (Basel, Switzerland)},
year = {2026},
month = oct,
doi = {10.3390/gels12100891},
url = {https://europepmc.org/article/MED/42929925},
note = {CC BY},
}
RIS
TY - JOUR
TI - Recent Advances in Novel Adsorbents Prepared by the Sol-Gel Method for the Removal of Uranium and Strontium from Radioactive Wastewater: A Review.
AU - Jiayi Jiang
AU - Jiaxue Zhao
AU - Miaoling Chen
AU - Diyun Chen
AU - Minhua Su
PY - 2026
DA - 2026/10/01
JO - Gels (Basel, Switzerland)
DO - 10.3390/gels12100891
UR - https://europepmc.org/article/MED/42929925
AB - Uranium- and strontium-containing wastewater from nuclear industries poses a threat to the environment and human health. The sol-gel method, with its tunable composition and synthetic flexibility, is widely used to fabricate novel and high-performance adsorbents. This review covers recent progress in the sol-gel fabrication of UO₂²⁺ and Sr²⁺ adsorbents, including both inorganic and organic-inorganic hybrid materials. Reported adsorption capacities typically range from about 40 to 670 mg/g for UO₂²⁺ and from about 40 to 370 mg/g for Sr²⁺, with a few systems achieving even higher values under optimized conditions. Titanates and titanosilicates exhibit outstanding selectivity toward Sr²⁺, whereas phosphate-based materials and amidoxime-functionalized hybrids show strong affinity for UO₂²⁺. However, practical application is still hampered by high precursor costs, poor shapeability, limited long-term stability, harsh regeneration conditions, and interference from coexisting ions. Future efforts should focus on low-cost materials and shaping processes to promote the engineering applications of tailored materials via the sol-gel method.
SN - 2310-2861
ER -