铱纳米酶的作用机理及应用研究进展

Recent advances in the mechanistic understanding and applications of iridium nanozymes

近年来贵金属纳米材料因其优异的催化性能引起了研究者们的广泛关注.相比于其它金属纳米材料,铱纳米材料具有一个显著优势,即在相同的制备条件下容易得到尺寸相对较小且稳定性好的纳米颗粒和团簇.通常而言,尺寸越小,纳米材料的催化活性越高.研究发现,除了传统的催化活性,铱纳米材料还表现出优异的类酶催化性质.然而,目前人们对于铱纳米酶的应用和催化机理研究还处于初期阶段,铱纳米酶催化相关的综述文献尚未见报道.为此我们结合相关文献报道以及本课题组近年来的研究工作,系统地探讨了铱纳米酶催化活性调控的因素和催化反应机制,并对它的应用进行了总结.最后,我们对铱纳米酶的发展和应用面临的挑战进行了展望.本文旨在加深人们对铱纳米酶作用机理的认识,并希望对从事其它纳米酶的研究者有所启发.

The superior catalytic performance of the noble metal-based nanomaterials has attracted a wide research interest in various fields.Among these nanomaterials,the iridium nanoparticles have shown a number of advantages including their facile preparations,small particle sizes and excellent catalytic performance.Furthermore,some more recent studies have also revealed the enzyme-mimic properties of iridium nanoparticles.However,the studies on the nanozyme properties and applications of iridium nanomaterials are still in their early stages.So far,only a limited number of relevant studies have been published and the mechanism of their enzymatic actions is poorly understood.This mini-review intends to summarize the recently published literature reports and our own studies on the explorations of iridium nanoparticles.The potential challenges and future perspectives are also tentatively discussed.It is hoped that the summary and discussions presented in this paper could help deepen the mechanistic understanding of the tempting property of iridium nanoparticles and encourage more energetic studies in this emerging research area.