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首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >Bamboo-like carbon nanotubes derived from colloidal polymer nanoplates for efficient removal of bisphenol A
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Bamboo-like carbon nanotubes derived from colloidal polymer nanoplates for efficient removal of bisphenol A

机译：源自胶体聚合物纳米板的竹状碳纳米管，可有效去除双酚A

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摘要

Bamboo-like carbon nanotubes (b-CNTs) were synthesized via a low-cost one-pot approach by using FeCl3 and self-assembled colloidal polymer nanoplates as precursors. The resulting b-CNTs were applied as both the adsorbent and the catalyst for the removal of bisphenol A (BPA) from aqueous solutions. The maximum adsorption capacity of BPA on the b-CNTs calculated by using the Langmuir model is 328.6 mg g(-1) at 303 K. Thermodynamics studies revealed that the adsorption was spontaneous and exothermic. With the synergistic effect of adsorption and catalysis by the b-CNTs, BPA (70 mg L-1) was almost completely removed (over 97%) at pH 7.0 within 80 min after the adsorption-oxidative degradation process. The b-CNTs also displayed an excellent reusability for the catalytic oxidation of BPA (initial concentration of 70 mg L-1) with the degradation ratio remaining at 84% after 5 cycles. Moreover, the b-CNT catalysts can be easily recycled by using an external magnet and regenerated by simply washing. This study not only presents a cost-effective method of using magnetic nanocarbons for the cleanup of pollutants, but also demonstrates the potential application of the b-CNTs as both an adsorbent and a catalyst.
机译：以FeCl3和自组装胶体聚合物纳米板为前驱体，通过低成本的一锅法合成了竹样碳纳米管（b-CNTs）。将所得的b-CNT用作吸附剂和催化剂，用于从水溶液中去除双酚A（BPA）。通过使用Langmuir模型计算，在303 K时BPA在b-CNT上的最大吸附容量为328.6 mg g（-1）。热力学研究表明吸附是自发的并且放热的。通过b-CNT的吸附和催化的协同作用，在吸附-氧化降解过程后的80分钟内，pH 7.0下BPA（70 mg L-1）几乎被完全去除（超过97％）。 b-CNT对BPA的催化氧化（初始浓度为70 mg L-1）也显示出极好的可重复使用性，在5个循环后降解率保持在84％。此外，可以通过使用外部磁体容易地回收b-CNT催化剂，并且可以通过简单的洗涤来使其再生。这项研究不仅提出了一种使用磁性纳米碳净化污染物的经济有效方法，而且还证明了b-CNTs作为吸附剂和催化剂的潜在应用。

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