Prussian blue caged in spongiform adsorbents using diatomite and carbon nanotubes for elimination of cesium
Prussian blue caged in spongiform adsorbents using diatomite and carbon nanotubes for elimination of cesium
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DOI：
10.1016/j.jhazmat.2012.02.071
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发表时间：
2012-05-30
影响因子：
13.6
通讯作者：
Abe, Yoshiteru
中科院分区：
文献类型：
--
作者：
Hu, Baiyang;Fugetsu, Bunshi;Abe, Yoshiteru
我们开发了一种含有普鲁士蓝的海绵状吸附剂，它对铯有很高的去除能力。采用原位合成法在陶瓷腔内合成普鲁士蓝。高度分散的碳纳米管（CNT）被用于形成CNT网络，其涂覆在基底上以密封普鲁士蓝颗粒。将这些三元（CNT/CNT/普鲁士蓝）复合材料与聚氨酯（PU）预聚物混合以产生具有原位发泡程序的四元（PU/CNT/CNT/普鲁士蓝/普鲁士蓝）海绵状吸附剂。普鲁士蓝被永久固定在海绵状基质的细胞壁中，并优先吸附铯，理论容量为167 mg/g铯。铯主要通过离子交换机制被吸收，而吸收是通过四元海绵状吸附剂自吸收放射性水来完成的。(C)2012爱思唯尔有限公司版权所有。
We developed a spongiform adsorbent that contains Prussian blue, which showed a high capacity for eliminating cesium. An in situ synthesizing approach was used to synthesize Prussian blue inside diatomite cavities. Highly dispersed carbon nanotubes (CNTs) were used to form CNT networks that coated the diatomite to seal in the Prussian blue particles. These ternary (CNT/diatomite/Prussian-blue) composites were mixed with polyurethane (PU) prepolymers to produce a quaternary (PU/CNT/diatomite/Prussian-blue), spongiform adsorbent with an in situ foaming procedure. Prussian blue was permanently immobilized in the cell walls of the spongiform matrix and preferentially adsorbed cesium with a theoretical capacity of 167 mg/g cesium. Cesium was absorbed primarily by an ion-exchange mechanism, and the absorption was accomplished by self-uptake of radioactive water by the quaternary spongiform adsorbent. (C) 2012 Elsevier B.V. All rights reserved.