In this work, a C@Ni hierarchical structure was carefully designed by entangling carbon microspheres with curving nickel nanosheets. The presence of copious mesopores between adjoining nanosheets and microspheres greatly enhanced the specific surface area from 314.7 m² g⁻¹ for pristine carbon spheres to 448.7 m² g⁻¹ for this well‐designed C@Ni architecture. This salient structural feature enabled it as an ideal magnetic adsorbent for Cr^VI removal in wastewater. The high Cr^VI adsorption capacity of ca. 550 mg g⁻¹ at 298 K, remarkable adsorption rate of 3.38 mg g^‐1 min^‐1 and excellent regeneration efficiencies above 90% were highly desirable for its widespread potential applications in water treatment.

中文翻译：

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分层设计的镍缠结碳球，具有出色的吸附性能

在这项工作中，通过将碳微球与弯曲的镍纳米片缠绕在一起，精心设计了C @ Ni分层结构。在相邻的纳米片和微球之间存在大量的中孔，将比表面积从原始碳球的314.7 m ² g ^-1大大提高到了这种精心设计的C @ Ni结构的比表面积444.4 m ² g ^-1。这个突出的结构特征启用它作为铬的理想磁吸附剂^VI去除废水中 大约Cr ^VI的高吸附容量。550毫克克^-1在298 K，3.38显着吸附率毫克克^-1分钟^-1 对于其在水处理中的广泛潜在应用，非常希望获得90％以上的优异再生效率。