Targeted synthesis of a high-stability cationic porous aromatic framework for highly efficient remediation of 99TcO4−

Huang, Yalin; Ding, Mu; Ding, Jie; Kang, Jinyang; Yan, Zijun; Zhao, Pengxiang; Zhou, Xiaoyuan; Jin, Yongdong; Chen, Shanyong; Xia, Chuanqin

doi:10.1016/j.cej.2022.134785

Cited by 30 publications

(9 citation statements)

References 39 publications

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“…Compared with other anions such as NO 3 − (−275 kJ/mol) and Cl − (−340 kJ/mol), the hydrophobic surface of p-(Amide)-PAM more easily adsorbs ReO 4 − . In addition, the negative charge of SO 4 2− (−1080 kJ/mol) is higher than that of ReO 4 − , and SO 4 2− is a more favorable compound for adsorption via electrostatic interactions [ 28 ]. According to the research report of existing adsorbents, in the anionic system of SO 4 2− or Cl − , the adsorbent is more effective in removing 99 TcO 4 − /ReO 4 − from radioactive wastewater, but it is interesting that in this work, the effect is better under the system of NO 3 − .…”

Section: Resultsmentioning

confidence: 99%

“…High-molecular-weight polymers are also adsorbents that can effectively remove 99 TcO 4 − from radioactive wastewater. Many polymers have been developed and used to remove 99 TcO 4 − in radioactive wastewater [ 26 , 27 , 28 , 29 , 30 ]. After polymers are modified by polyamidation, the polymer can selectively remove 99 TcO 4 − by electrostatic interaction or hydrogen bonding [ 28 , 31 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

“…Many polymers have been developed and used to remove 99 TcO 4 − in radioactive wastewater [ 26 , 27 , 28 , 29 , 30 ]. After polymers are modified by polyamidation, the polymer can selectively remove 99 TcO 4 − by electrostatic interaction or hydrogen bonding [ 28 , 31 , 32 ]. Polyacrylamide (PAM) is a widely used polymer that is often used in biomedicine, sewage treatment, and other fields.…”

Section: Introductionmentioning

confidence: 99%

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Highly Selective Adsorption of 99TcO4−/ReO4− by a Novel Polyamide-Functionalized Polyacrylamide Polymer Material

Qin

Yinqiao

Xie

et al. 2022

Toxics

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The treatment of radioactive wastewater is one of the major problems in the current research. With the development of nuclear energy, the efficient removal of 99TcO4− in radioactive wastewater has attracted the attention of countries all over the world. In this study, a novel functional polyamide polymer p-(Amide)-PAM was synthesized by the two-step method. The experimental results show that p-(Amide)-PAM has good adsorptive properties for 99TcO4−/ReO4− and has good selectivity in the nitric acid system. The kinetics of the reaction of p-(Amide)-PAM with 99TcO4−/ReO4− was studied. The results show that p-(Amide)-PAM has a fast adsorption rate for 99TcO4−/ReO4−, the saturated adsorption capacity reaches 346.02 mg/g, and the material has good reusability. This new polyamide-functionalized polyacrylamide polymer material has good application prospects in the removal of 99TcO4− from radioactive wastewater.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Highly Selective Adsorption of 99TcO4−/ReO4− by a Novel Polyamide-Functionalized Polyacrylamide Polymer Material

Qin

Yinqiao

Xie

et al. 2022

Toxics

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“…TZ-PAF exhibited rapid adsorption kinetics (97.8% removal rate in 30 s for TcO 4 – ) with a maximum adsorption capacity of 982 mg/g ReO 4 – at pH = 7 and T = 25 °C. About 64.6% ReO 4 – was removed in 3 mol/L HNO 3 at 260 ppm ReO 4 – . Therefore, the pyridinyl cationic polymers synthesized by the Zincke reaction have a good adsorption effect and excellent selectivity, which is significant to treat radioactive wastewater.…”

Section: Technetium Enrichment and Separationmentioning

confidence: 99%

Enrichment and Separation of Radionuclides by Organic Polymer Materials: A Review

Zhang,

Yang,

Rong

et al. 2024

ACS EST Eng.

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Nuclear power provides a chance for the decarbonization of global energyrelated emissions. However, the spent fuel produced by nuclear reactors contains various radionuclides, which require further disposal and treatment. Therefore, the enrichment and separation of radionuclides are of great significance for the recycling and utilization of resources. Organic polymer materials have attracted great attention due to their excellent physicochemical properties of rapid kinetics, high adsorption capacity, high selectivity, and diverse functionalization. This review provides an overview of the use of pristine polymers, functionalized polymers, and polymer-based composites for the highly efficient enrichment and separation of different kinds of radionuclides (i.e., U, Tc, I). The synthesis strategy, radionuclides enrichment and separation ability, and related mechanism are comprehensively summarized. The structure−property relationships in polymer-based materials that underpin their outstanding environmental remediation performance are also illustrated. Finally, the challenges and perspectives of polymer-based materials for future radionuclide separation and legacy nuclear waste management are reasonably proposed, aiming to design functional polymers for task-specific applications.

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“…Since coordination bonds are the main force connecting metal nodes to bridge organic units, the stability of MOF is obviously weaker than that of CPN and COF constructed by covalent bonds. [47,48] Thus, stability is an indispensable feature of materials. Third, a large of competing anions often exist with TcO 4 − in radioactive waste solution, which makes it difficult for sorbents to effectively remove target anions.…”

mentioning

confidence: 99%

Fast Room‐Temperature Synthesis of an Extremely Alkaline‐Resistant Cationic Metal–Organic Framework for Sequestering TcO₄⁻ with Exceptional Selectivity

Kang

Liu

Zhang

et al. 2022

Adv Funct Materials

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Leveraging metal–organic framework (MOF) to eliminate radioactive contaminants has invariably received much attention, but low preparation efficiency and poor selectivity have still limited its actual application. Herein, it is found that a fourfold interpenetrated cationic MOF (Ag‐TPPE) can be rapidly synthesized by only mixing, stirring, or sonication at room temperature. More impressively, the preparation process can be completed in <1 min. Up to now, this is the first report that cationic MOFs can be obtained by directly mixing the corresponding raw materials at room temperature. In addition to holding the rare merits of structural stability in extremely strong bases (8 m NaOH), Ag‐TPPE can selectively remove TcO4− in the presence of large excess SO42− or NO3−. Based on its ultra‐high selectivity, Ag‐TPPE exhibits exceptional removal rate for TcO4− from simulated Hanford and Savannah River Site waste streams, which refreshes the record of selective sorption of TcO4− at low solid/liquid ratio, overcoming the drawback of overused sorbent in treatment of radioactive waste solution. Such superior sorption capabilities are thoroughly elucidated by the density functional theory calculations on a molecular level, clearly disclosing that TcO4− can enter into the framework through breathing effect and is trapped in the large cavity through dense hydrogen bonds.

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Targeted synthesis of a high-stability cationic porous aromatic framework for highly efficient remediation of 99TcO4−

Cited by 30 publications

References 39 publications

Highly Selective Adsorption of 99TcO4−/ReO4− by a Novel Polyamide-Functionalized Polyacrylamide Polymer Material

Highly Selective Adsorption of 99TcO4−/ReO4− by a Novel Polyamide-Functionalized Polyacrylamide Polymer Material

Enrichment and Separation of Radionuclides by Organic Polymer Materials: A Review

Fast Room‐Temperature Synthesis of an Extremely Alkaline‐Resistant Cationic Metal–Organic Framework for Sequestering TcO₄⁻ with Exceptional Selectivity

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Targeted synthesis of a high-stability cationic porous aromatic framework for highly efficient remediation of 99TcO4−

Cited by 30 publications

References 39 publications

Highly Selective Adsorption of 99TcO4−/ReO4− by a Novel Polyamide-Functionalized Polyacrylamide Polymer Material

Highly Selective Adsorption of 99TcO4−/ReO4− by a Novel Polyamide-Functionalized Polyacrylamide Polymer Material

Enrichment and Separation of Radionuclides by Organic Polymer Materials: A Review

Fast Room‐Temperature Synthesis of an Extremely Alkaline‐Resistant Cationic Metal–Organic Framework for Sequestering TcO4− with Exceptional Selectivity

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Product

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Fast Room‐Temperature Synthesis of an Extremely Alkaline‐Resistant Cationic Metal–Organic Framework for Sequestering TcO₄⁻ with Exceptional Selectivity