Amidoxime Group-Anchored Single Cobalt Atoms for Anti-Biofouling during Uranium Extraction from Seawater.
Amidoxime Group-Anchored Single Cobalt Atoms for Anti-Biofouling during Uranium Extraction from Seawater.
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DOI：
10.1002/advs.202105008
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发表时间：
2022-04
期刊：
影响因子：
--
通讯作者：
Wang N
中科院分区：
文献类型：
--
作者：
Sun W;Feng L;Zhang J;Lin K;Wang H;Yan B;Feng T;Cao M;Liu T;Yuan Y;Wang N
海洋生物污染是阻碍从海水中实际提取铀的最重大挑战之一。单原子由于其优异的氧化还原性能而被广泛应用于催化领域，这意味着单原子具有很强的催化活性氧（ROS）生成的能力，并且可以作为一种抗生物污染物质来控制生物污染。在本研究中，基于偕胺肟基与铀酰和钴离子的结合能力，制备了Co单原子负载聚丙烯酰胺肟（PAO）材料PAO‐Co。偕胺肟基的氮原子和氧原子稳定了Co单原子。制备的PAO‐Co通过产生活性氧对多种海洋微生物表现出广泛的抗菌活性，抑制率高达93.4%。本研究首次将单原子用于控制生物污染。该吸附剂在含生物污染的天然海水中获得了9.7 mg g−1的超高铀吸附量，与去除生物污染的天然海水相比，仅下降了11%。这些发现表明，应用单原子将是一种很有前途的策略，用于设计从海水中提取铀的抗生物污染吸附剂。基于偕胺肟基团结合铀酰和Co2+离子的能力，制备了Co单原子负载的PAO - Co材料，用于铀萃取和抗生物污染。PAO - Co材料通过产生活性氧对海洋生物污垢具有广泛的抗菌活性，并且在含生物污垢的天然海水中具有9.7 mg g - 1的高铀萃取能力。
Marine biofouling is one of the most significant challenges hindering practical uranium extraction from seawater. Single atoms have been widely used in catalytic applications because of their remarkable redox property, implying that the single atom is highly capable of catalyzing the generation of reactive oxygen species (ROS) and acts as an anti‐biofouling substance for controlling biofouling. In this study, the Co single atom loaded polyacrylamidoxime (PAO) material, PAO‐Co, is fabricated based on the binding ability of the amidoxime group to uranyl and cobalt ions. Nitrogen and oxygen atoms from the amidoxime group stabilize the Co single atom. The fabricated PAO‐Co exhibits a broad range of antimicrobial activity against diverse marine microorganisms by producing ROS, with an inhibition rate up to 93.4%. The present study is the first to apply the single atom for controlling biofouling. The adsorbent achieves an ultrahigh uranium adsorption capacity of 9.7 mg g−1 in biofouling‐containing natural seawater, which decreased only by 11% compared with that in biofouling‐removed natural seawater. These findings indicate that applying single atoms would be a promising strategy for designing biofouling‐resistant adsorbents for uranium extraction from seawater. Based on the ability of the amidoxime group to bind both uranyl and Co2+ ions, the Co single‐atom‐loaded PAO‐Co material is fabricated for uranium extraction and anti‐biofouling. The PAO‐Co material exhibits a broad range of antimicrobial activity against marine biofouling by producing reactive oxygen species and a high uranium extraction capacity of 9.7 mg g−1 in biofouling‐containing natural seawater.
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影响因子：
22.1
作者：
Jiang, Xun-Heng;Xing, Qiu-Ju;Wang, Xiang-Ke
通讯作者：
Wang, Xiang-Ke
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DOI：
10.1002/advs.202001881
发表时间：
2021-01
期刊：
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
影响因子：
--
作者：
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通讯作者：
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影响因子：
56.9
作者：
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影响因子：
16.6
作者：
Feng, Lijuan;Wang, Hui;Wang, Ning
通讯作者：
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影响因子：
4.2
作者：
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通讯作者：
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