Yan He, Qingwang Du, Shuna Wen, Tong Yu, Na Wang, Dingzhong Yuan, Bing Na
{"title":"植酸改性多孔有机聚合物在水溶液和模拟海水中的高效吸附","authors":"Yan He, Qingwang Du, Shuna Wen, Tong Yu, Na Wang, Dingzhong Yuan, Bing Na","doi":"10.1007/s11164-025-05646-w","DOIUrl":null,"url":null,"abstract":"<div><p>In this work, an amine functionalized porous organic polymer (POP-ABP-NH<sub>2</sub>) was synthesized by one-step Friedel–Crafts alkylation reaction using 2-aminobiphenyl as an organic monomer and p-dichlorobenzyl as a crosslinker. Then, POP-ABP-NH<sub>2</sub> was functionalized with different concentrations of phytic acid (PA, 30% and 50%) through hydrothermal reaction, and new phytic acid-modified porous organic polymers (POP-ABP-PA-1 and POP-ABP-PA-2) were successfully synthesized. The adsorption performance of the adsorbents for U(VI) ions in aqueous solution and simulated seawater was studied. The results show that the higher PA concentration, the smaller the specific surface area (<i>S</i><sub><i>BET</i></sub> POP-ABP-PA-2 (185.84 m<sup>2</sup>/g) < <i>S</i><sub><i>BET</i></sub> POP-ABP-PA-1 (598.43 m<sup>2</sup>/g)). This may be because the high concentration of PA occupies more pore sites, resulting in a decrease in specific surface area. The adsorption kinetics of the materials for U(VI) conform to the pseudo-second-order kinetic adsorption model, and the adsorption isotherm conform to the Langmuir monolayer adsorption model. Under the optimal adsorption conditions, the maximum adsorption capacity of POP-ABP-PA-2 for U(VI) (q<sub>max</sub> = 1372.2 mg/g) is much higher than that of POP-ABP-PA-1 (q<sub>max</sub> = 769.2 mg/g). This may be because POP-ABP-PA-2 is connected to a high concentration of PA and has a high phosphorus and oxygen content, resulting in stronger coordination ability and higher adsorption capacity. Most importantly, in simulated seawater at pH = 8, POP-ABP-PA-2 exhibited a high theoretical adsorption capacity of 299.4 mg/g in 150 min. In addition, in a solution where many impurity ions coexist, POP-ABP-PA-2 can still exhibit excellent adsorption selectivity for U(VI), and after five adsorption–desorption cycles, the adsorption removal percentage of U(VI) can still be maintained at 90%. This study provides an important research idea for further developing phytic acid (PA) composites for U(VI) adsorption.</p></div>","PeriodicalId":753,"journal":{"name":"Research on Chemical Intermediates","volume":"51 11","pages":"6613 - 6632"},"PeriodicalIF":3.5000,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Phytic acid-modified porous organic polymer for efficient adsorption of U(VI) from aqueous solution and simulated seawater\",\"authors\":\"Yan He, Qingwang Du, Shuna Wen, Tong Yu, Na Wang, Dingzhong Yuan, Bing Na\",\"doi\":\"10.1007/s11164-025-05646-w\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In this work, an amine functionalized porous organic polymer (POP-ABP-NH<sub>2</sub>) was synthesized by one-step Friedel–Crafts alkylation reaction using 2-aminobiphenyl as an organic monomer and p-dichlorobenzyl as a crosslinker. Then, POP-ABP-NH<sub>2</sub> was functionalized with different concentrations of phytic acid (PA, 30% and 50%) through hydrothermal reaction, and new phytic acid-modified porous organic polymers (POP-ABP-PA-1 and POP-ABP-PA-2) were successfully synthesized. The adsorption performance of the adsorbents for U(VI) ions in aqueous solution and simulated seawater was studied. The results show that the higher PA concentration, the smaller the specific surface area (<i>S</i><sub><i>BET</i></sub> POP-ABP-PA-2 (185.84 m<sup>2</sup>/g) < <i>S</i><sub><i>BET</i></sub> POP-ABP-PA-1 (598.43 m<sup>2</sup>/g)). This may be because the high concentration of PA occupies more pore sites, resulting in a decrease in specific surface area. The adsorption kinetics of the materials for U(VI) conform to the pseudo-second-order kinetic adsorption model, and the adsorption isotherm conform to the Langmuir monolayer adsorption model. Under the optimal adsorption conditions, the maximum adsorption capacity of POP-ABP-PA-2 for U(VI) (q<sub>max</sub> = 1372.2 mg/g) is much higher than that of POP-ABP-PA-1 (q<sub>max</sub> = 769.2 mg/g). This may be because POP-ABP-PA-2 is connected to a high concentration of PA and has a high phosphorus and oxygen content, resulting in stronger coordination ability and higher adsorption capacity. Most importantly, in simulated seawater at pH = 8, POP-ABP-PA-2 exhibited a high theoretical adsorption capacity of 299.4 mg/g in 150 min. In addition, in a solution where many impurity ions coexist, POP-ABP-PA-2 can still exhibit excellent adsorption selectivity for U(VI), and after five adsorption–desorption cycles, the adsorption removal percentage of U(VI) can still be maintained at 90%. This study provides an important research idea for further developing phytic acid (PA) composites for U(VI) adsorption.</p></div>\",\"PeriodicalId\":753,\"journal\":{\"name\":\"Research on Chemical Intermediates\",\"volume\":\"51 11\",\"pages\":\"6613 - 6632\"},\"PeriodicalIF\":3.5000,\"publicationDate\":\"2025-07-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Research on Chemical Intermediates\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11164-025-05646-w\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Research on Chemical Intermediates","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s11164-025-05646-w","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Phytic acid-modified porous organic polymer for efficient adsorption of U(VI) from aqueous solution and simulated seawater
In this work, an amine functionalized porous organic polymer (POP-ABP-NH2) was synthesized by one-step Friedel–Crafts alkylation reaction using 2-aminobiphenyl as an organic monomer and p-dichlorobenzyl as a crosslinker. Then, POP-ABP-NH2 was functionalized with different concentrations of phytic acid (PA, 30% and 50%) through hydrothermal reaction, and new phytic acid-modified porous organic polymers (POP-ABP-PA-1 and POP-ABP-PA-2) were successfully synthesized. The adsorption performance of the adsorbents for U(VI) ions in aqueous solution and simulated seawater was studied. The results show that the higher PA concentration, the smaller the specific surface area (SBET POP-ABP-PA-2 (185.84 m2/g) < SBET POP-ABP-PA-1 (598.43 m2/g)). This may be because the high concentration of PA occupies more pore sites, resulting in a decrease in specific surface area. The adsorption kinetics of the materials for U(VI) conform to the pseudo-second-order kinetic adsorption model, and the adsorption isotherm conform to the Langmuir monolayer adsorption model. Under the optimal adsorption conditions, the maximum adsorption capacity of POP-ABP-PA-2 for U(VI) (qmax = 1372.2 mg/g) is much higher than that of POP-ABP-PA-1 (qmax = 769.2 mg/g). This may be because POP-ABP-PA-2 is connected to a high concentration of PA and has a high phosphorus and oxygen content, resulting in stronger coordination ability and higher adsorption capacity. Most importantly, in simulated seawater at pH = 8, POP-ABP-PA-2 exhibited a high theoretical adsorption capacity of 299.4 mg/g in 150 min. In addition, in a solution where many impurity ions coexist, POP-ABP-PA-2 can still exhibit excellent adsorption selectivity for U(VI), and after five adsorption–desorption cycles, the adsorption removal percentage of U(VI) can still be maintained at 90%. This study provides an important research idea for further developing phytic acid (PA) composites for U(VI) adsorption.
期刊介绍：
Research on Chemical Intermediates publishes current research articles and concise dynamic reviews on the properties, structures and reactivities of intermediate species in all the various domains of chemistry.
The journal also contains articles in related disciplines such as spectroscopy, molecular biology and biochemistry, atmospheric and environmental sciences, catalysis, photochemistry and photophysics. In addition, special issues dedicated to specific topics in the field are regularly published.
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