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首页> 外文期刊>Environmental Science & Technology >Surface-Engineered Sponge Decorated with Copper Selenide for Highly Efficient Gas-Phase Mercury Immobilization
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Surface-Engineered Sponge Decorated with Copper Selenide for Highly Efficient Gas-Phase Mercury Immobilization

机译：用铜硒化型装饰表面工程的海绵，用于高效的气相汞固定化

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摘要

The paramount challenge in design and synthesis of materials for vapor-phase elemental mercury (Hg~0) immobilization is to achieve a balance between performance and economy for practical applications. Herein, a newly designed electroless plating coupled with an in situ selenization method was developed to construct a copper selenide (Cu_2Se)-functionalized commercial polyurethane sponge (PUS) as an efficient Hg~0 trap. Intrinsic features such as easy availability of the raw material, facile preparation, and excellent performance guarantee the Cu_2Se/PUS to be applicable in industrial uses. The Cu_2Se/PUS exhibits a maximum adsorption capacity (Q_(m,Cu_2Se/PUS)) of 25.90 mg·g~(-1), while this value is 758.80 mg·g~(-1) when normalized to the Cu_2Se coating amount. This value of Q_(m,Cu_2Se) is equal to 79.7% of its corresponding theoretical value (Q_(t,Cu_2Se)), far exceeding the availability of Cu_2Se anchored on other supports. Meanwhile, the Cu_2Se/ PUS exhibited a quick response for Hg~0, with an extremely high uptake rate of 1275.84 μg·g~(-1)·min~(-1). Even under harsh conditions, the Cu_2Se/PUS still immobilizes Hg~0 effectively, which is crucial for real-world applications. This work not only provides a promising trap for permanent Hg~0 sequestration from industrial sources but also illustrates a versatile platform for the economic fabrication and practical application of advanced functional sponges in diverse environmental remediation.
机译：对气相元素汞（HG〜0）固定的设计和合成材料的最重要挑战是在实际应用中实现性能和经济之间的平衡。在此，开发出与原位硒化方法联接的新设计的化学镀，以构建硒化铜（Cu_2Se） - 官能化的商业聚氨酯海绵（PU），为有效的HG〜0捕集器。固有功能，例如易于使用原料，便利准备和优异的性能保证Cu_2SE / PU适用于工业用途。 CU_2SE / PU具有25.90 mg·g〜（-1）的最大吸附容量（Q_（m，cu_2se / pus），而该值是758.80 mg·g〜（1），当标准化为CU_2SE涂布量。这种Q_（m，CU_2SE）的值等于其相应理论值的79.7％（Q_（t，cu_2se）），远远超过锚定在其他支持上的CU_2SE的可用性。同时，Cu_2Se / PU对Hg〜0表示快速响应，具有1275.84μg·g〜（-1）·min〜（-1）的极高摄取率。即使在恶劣的条件下，CU_2SE / PU仍然有效地固定HG〜0，这对于现实世界应用至关重要。这项工作不仅为工业来源的永久性HG〜0封存提供了有前途的陷阱，而且还说明了经济制造的多功能平台，对各种环境修复中的先进功能海绵的实际应用。

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  • 来源
    《Environmental Science & Technology》 |2020年第24期|16195-16203|共9页
  • 作者

    Jianping Yang; Qin Li; Hongxiao Zu; Zequn Yang; Wenqi Qu; Min Li; Hailong Li;

  • 作者单位

    School of Energy Science and Engineering Central South University Changsha 410083 China;

    School of Energy Science and Engineering Central South University Changsha 410083 China;

    School of Energy Science and Engineering Central South University Changsha 410083 China;

    Department of Civil Engineering The University of Hong Kong Hong Kong Hong Kong SAR China;

    School of Energy Science and Engineering Central South University Changsha 410083 China;

    School of Energy Science and Engineering Central South University Changsha 410083 China;

    School of Energy Science and Engineering Central South University Changsha 410083 China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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