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一种用于协同降解亚甲基蓝的高熵合金纳米颗粒-活性炭纳米复合材料的简便合成方法。

A facile synthesis of high entropy alloy nanoparticle-activated carbon nanocomposites for synergetic degradation of methylene blue.

作者信息

Liu Yuyu, Chen Zheng, Yang Xiaoqin, Zhang Jinyong, Sun Zhonggang, Chen Yuzeng, Liu Feng

机构信息

School of Material Science and Engineering, China University of Mining and Technology Xuzhou Jiangsu 221008 China

Tech Institute for Advanced Materials, College of Materials Science and Technology, Nanjing Tech University Nanjing 210009 China.

出版信息

RSC Adv. 2021 Jul 14;11(40):24636-24646. doi: 10.1039/d1ra03661k. eCollection 2021 Jul 13.

DOI:10.1039/d1ra03661k
PMID:35481010
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9036914/
Abstract

Nanocomposites of CoCrFeMnNi high entropy alloy nanoparticle-activated carbon (HEA NPs-AC) were prepared by a facile and controllable impregnation-adsorption method. The HEA NPs-AC showed excellent catalytic performance in the degradation of methylene blue (MB) without any peroxide addition. Besides, their reaction rate is also competitive among single-element and other catalysts. The outstanding efficiency is attributed to the coupling effects of the solid-solution structure of HEA NPs, and the large specific surface area and substantial reaction channels of AC. Moreover, the HEA NPs embedded in distinctive porous architectures accelerate the electron transfer and the mass transport as nanoscale galvanic cells in active bond breaking of MB. The nanocomposites of HEA NPs-AC are distinguished by containing non-noble metals and having high catalytic performance due to the synergetic degradation, providing a better alternative for efficient metal catalysis.

摘要

采用简便可控的浸渍吸附法制备了CoCrFeMnNi高熵合金纳米颗粒-活性炭（HEA NPs-AC）纳米复合材料。HEA NPs-AC在不添加任何过氧化物的情况下，对亚甲基蓝（MB）的降解表现出优异的催化性能。此外，它们的反应速率在单元素催化剂和其他催化剂中也具有竞争力。这种出色的效率归因于HEA NPs固溶体结构的耦合效应，以及AC的大比表面积和大量反应通道。此外，嵌入独特多孔结构中的HEA NPs作为纳米级原电池，在MB的活性键断裂过程中加速了电子转移和质量传输。HEA NPs-AC纳米复合材料因协同降解而具有不含贵金属且催化性能高的特点，为高效金属催化提供了更好的选择。

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