Preparation of Agarose Fluorescent Hydrogel Inserted by POSS and Its Application for the Identification and Adsorption of Fe<sup>3+</sup>
After entering in water, Fe<sup>3+</sup> is enriched in the human body and along the food chain, causing chronic poisoning and irreversible harm to human health. In order to solve this problem, we synthesized citric acid POSS (CAP) from aminopropyl POSS (OAP) and citric acid. Then, we sy...
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MDPI AG
2021-10-01
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| Online Access: | https://www.mdpi.com/2310-2861/7/4/173 |
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| author | Zhengquan Fu Ming Li Yuanhang Li Zhiyuan Zhang Di Wang Chengyu Wang Jian Li |
| author_facet | Zhengquan Fu Ming Li Yuanhang Li Zhiyuan Zhang Di Wang Chengyu Wang Jian Li |
| author_sort | Zhengquan Fu |
| collection | DOAJ |
| description | After entering in water, Fe<sup>3+</sup> is enriched in the human body and along the food chain, causing chronic poisoning and irreversible harm to human health. In order to solve this problem, we synthesized citric acid POSS (CAP) from aminopropyl POSS (OAP) and citric acid. Then, we synthesized fluorescent hydrogels (CAP-agarose hydrogel, CAHG) with CAP and agarose. The luminescence mechanism of CAP was investigated by theoretical calculation. CAP plays a dual role in composite hydrogels: one is to give the gels good fluorescence properties and detect Fe<sup>3+</sup>; the second is that the surface of CAP has a large content of carbonyl and amide groups, so it can coordinate with Fe<sup>3+</sup> to enhance the adsorption properties of hydrogels. The experimental results show that the lowest Fe<sup>3+</sup> concentration that CAHG can detect is 5 μmol/L, and the adsorption capacity for Fe<sup>3+</sup> is about 26.75 mg/g. In a certain range, the fluorescence intensity of CAHG had an exponential relation with Fe<sup>3+</sup> concentration, which is expected to be applied to fluorescence sensors. Even at a lower concentration, CAHG can effectively remove Fe<sup>3+</sup> from the solution. The prepared fluorescent hydrogel has great potential in the field of fluorescent probes, fluorescent sensors, and ion adsorption. Besides, CAHG can be used as photothermal material after adsorbing Fe<sup>3+</sup>, allowing for material recycling and reducing material waste. |
| first_indexed | 2024-03-10T04:04:27Z |
| format | Article |
| id | doaj.art-8a283fdd268e4a6f97d83a783e07687b |
| institution | Directory Open Access Journal |
| issn | 2310-2861 |
| language | English |
| last_indexed | 2024-03-10T04:04:27Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Gels |
| spelling | doaj.art-8a283fdd268e4a6f97d83a783e07687b2023-11-23T08:27:29ZengMDPI AGGels2310-28612021-10-017417310.3390/gels7040173Preparation of Agarose Fluorescent Hydrogel Inserted by POSS and Its Application for the Identification and Adsorption of Fe<sup>3+</sup>Zhengquan Fu0Ming Li1Yuanhang Li2Zhiyuan Zhang3Di Wang4Chengyu Wang5Jian Li6Key Laboratory of Bio-Based Material Science and Technology (Ministry of Education), Northeast Forestry University, Harbin 150040, ChinaKey Laboratory of Bio-Based Material Science and Technology (Ministry of Education), Northeast Forestry University, Harbin 150040, ChinaKey Laboratory of Bio-Based Material Science and Technology (Ministry of Education), Northeast Forestry University, Harbin 150040, ChinaKey Laboratory of Bio-Based Material Science and Technology (Ministry of Education), Northeast Forestry University, Harbin 150040, ChinaKey Laboratory of Bio-Based Material Science and Technology (Ministry of Education), Northeast Forestry University, Harbin 150040, ChinaKey Laboratory of Bio-Based Material Science and Technology (Ministry of Education), Northeast Forestry University, Harbin 150040, ChinaKey Laboratory of Bio-Based Material Science and Technology (Ministry of Education), Northeast Forestry University, Harbin 150040, ChinaAfter entering in water, Fe<sup>3+</sup> is enriched in the human body and along the food chain, causing chronic poisoning and irreversible harm to human health. In order to solve this problem, we synthesized citric acid POSS (CAP) from aminopropyl POSS (OAP) and citric acid. Then, we synthesized fluorescent hydrogels (CAP-agarose hydrogel, CAHG) with CAP and agarose. The luminescence mechanism of CAP was investigated by theoretical calculation. CAP plays a dual role in composite hydrogels: one is to give the gels good fluorescence properties and detect Fe<sup>3+</sup>; the second is that the surface of CAP has a large content of carbonyl and amide groups, so it can coordinate with Fe<sup>3+</sup> to enhance the adsorption properties of hydrogels. The experimental results show that the lowest Fe<sup>3+</sup> concentration that CAHG can detect is 5 μmol/L, and the adsorption capacity for Fe<sup>3+</sup> is about 26.75 mg/g. In a certain range, the fluorescence intensity of CAHG had an exponential relation with Fe<sup>3+</sup> concentration, which is expected to be applied to fluorescence sensors. Even at a lower concentration, CAHG can effectively remove Fe<sup>3+</sup> from the solution. The prepared fluorescent hydrogel has great potential in the field of fluorescent probes, fluorescent sensors, and ion adsorption. Besides, CAHG can be used as photothermal material after adsorbing Fe<sup>3+</sup>, allowing for material recycling and reducing material waste.https://www.mdpi.com/2310-2861/7/4/173fluorescent hydrogelcitric acid POSStheoretical calculationFe<sup>3+</sup> identification and adsorption |
| spellingShingle | Zhengquan Fu Ming Li Yuanhang Li Zhiyuan Zhang Di Wang Chengyu Wang Jian Li Preparation of Agarose Fluorescent Hydrogel Inserted by POSS and Its Application for the Identification and Adsorption of Fe<sup>3+</sup> Gels fluorescent hydrogel citric acid POSS theoretical calculation Fe<sup>3+</sup> identification and adsorption |
| title | Preparation of Agarose Fluorescent Hydrogel Inserted by POSS and Its Application for the Identification and Adsorption of Fe<sup>3+</sup> |
| title_full | Preparation of Agarose Fluorescent Hydrogel Inserted by POSS and Its Application for the Identification and Adsorption of Fe<sup>3+</sup> |
| title_fullStr | Preparation of Agarose Fluorescent Hydrogel Inserted by POSS and Its Application for the Identification and Adsorption of Fe<sup>3+</sup> |
| title_full_unstemmed | Preparation of Agarose Fluorescent Hydrogel Inserted by POSS and Its Application for the Identification and Adsorption of Fe<sup>3+</sup> |
| title_short | Preparation of Agarose Fluorescent Hydrogel Inserted by POSS and Its Application for the Identification and Adsorption of Fe<sup>3+</sup> |
| title_sort | preparation of agarose fluorescent hydrogel inserted by poss and its application for the identification and adsorption of fe sup 3 sup |
| topic | fluorescent hydrogel citric acid POSS theoretical calculation Fe<sup>3+</sup> identification and adsorption |
| url | https://www.mdpi.com/2310-2861/7/4/173 |
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