ABSTRACT

A novel heterogeneous catalytic nanomaterial based on a molybdenum cluster-based halide (MC) and a single-layered copper hydroxynitrate (CHN) was first prepared by colloidal processing under ambient conditions. The results of the elemental composition and crystalline pattern indicated that CHN was comprehensively synthesized with the support of the MC compound. The absorbing characteristic in the ultraviolet and near-infrared regions was promoted by both of the ingredients. The proper chemical interaction between the materials is a crucial reason to modify the structure of the MCs and only a small decrease in the magnetic susceptibility of CHN. The heterogeneous catalytic activity of the obtained MC@CHN material was found to have a high efficiency and excellent reuse when it is activated by hydrogen peroxide (H₂O₂) for the degrading reaction of the organic pollutant at room temperature. A reasonable catalytic mechanism was proposed to explain the distinct role of the copper compound, Mo₆ compound, and H₂O₂ in the production of the radical hydroxyl ion. This novel nanomaterial will be an environmentally promising candidate for dye removal.

摘要

首先在环境条件下通过胶体加工制备了一种基于钼簇基卤化物（MC）和单层羟基硝酸铜（CHN）的新型多相催化纳米材料。元素组成和晶型的结果表明CHN是在MC化合物的支持下综合合成的。这两种成分都促进了紫外线和近红外线区域的吸收特性。材料之间适当的化学相互作用是改变 MC 结构的关键原因，并且 CHN 的磁化率仅略有下降。发现获得的 MC@CHN 材料的多相催化活性在被过氧化氢（H ₂O ₂ ) 用于有机污染物在室温下的降解反应。提出了合理的催化机制来解释铜化合物、Mo ₆化合物和H ₂ O ₂在自由基羟基离子生成中的不同作用。这种新型纳米材料将成为去除染料的环保候选材料。