Abstract

Noble metal-based surface chemistry is a well-practiced domain on interest in catalysis. A newborn in mussel-inspired coating based on catecholic chemistry, poly(norepinephrine) (PNE), has been synthesized via cyclization polymerization technique over MnO₂ nanosheets. The physisorped PNE macromolecular chains over MnO₂ nanosheets act as green reducing agent for silver ions resulting in arresting the quasi-spherical silver nanoparticles distributed over the MnO₂-PNE assembly. The catalytic activity was performed against nitroaryl molecules which evidenced fast reduction with pseudo-first-order kinetics. The superiority which lies in this work is their facile preparation, high surface area due to sheet-like morphology, and fast catalytic reduction. These practical observations spread its window as nanocatalyst toward environmental remediation of hazardous nitroaryl compounds.

Graphic abstract

中文翻译：

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贻贝启发的Ag /聚（去甲肾上腺素）/ MnO 2多相纳米催化剂可有效还原4-硝基苯酚和4-硝基苯胺：另一种方法

摘要

基于贵金属的表面化学是催化领域关注的一个良好实践领域。通过环化聚合技术在MnO ₂纳米片上合成了基于幼稚化学的贻贝启发性涂层的新生儿聚去甲肾上腺素（PNE）。MnO ₂纳米片上的物理吸附的PNE大分子链充当银离子的绿色还原剂，从而阻止了分布在MnO _2上的准球形银纳米粒子-PNE组装。对硝基芳基分子进行催化活性，证明其具有伪一级动力学快速还原。这项工作的优势在于其制备简便，由于片状形态而具有较高的表面积以及快速的催化还原作用。这些实际观察为纳米催化剂对环境中的硝基硝基芳基化合物的修复提供了广阔的前景。

图形摘要