School of Energy and Power Engineering & School of Material Science and Engineering, North University of China, Taiyuan 030051, P. R. China.
ACS Appl Mater Interfaces. 2021 Nov 17;13(45):54274-54283. doi: 10.1021/acsami.1c16569. Epub 2021 Nov 3.
Nanozymes have emerged as a fascinating nanomaterial with enzyme-like characteristics for addressing the limitations of natural enzymes. Nevertheless, how to improve the relatively low catalytic activity still remains challenging. Herein, a facile recrystallizing salt template-assisted chemical vapor deposition method was utilized to synthesize MoSe/PCN heterostructures. This heterostructure displays remarkably enhanced light boosting peroxidase-like activities. Notably, the maximal reaction velocity of this heterostructure attains 17.81 and 86.89 μM min [for -phenylenediamine (OPD) and 3,3'5,5'-tetramethylbenzidine (TMB), respectively]. Moreover, various characterization means were performed to explore the mechanism deeply. It is worth mentioning that the photoinduced electrons generated by the heterostructure directly react with HO to yield plentiful OH for the effective oxidation of OPD and TMB. Therefore, this work offers a promising approach for improving peroxidase-like activity by light stimulation and actuating the development of enzyme-based applications.
纳米酶作为一种具有酶样特性的纳米材料，具有很大的吸引力，可以解决天然酶的局限性。然而，如何提高相对较低的催化活性仍然具有挑战性。在此，我们采用了一种简便的再结晶盐模板辅助化学气相沉积法来合成 MoSe/PCN 杂化结构。这种杂化结构显示出显著增强的光提升过氧化物酶样活性。值得注意的是，该杂化结构的最大反应速度分别达到 17.81 和 86.89 μM min [用于 -苯二胺 (OPD) 和 3,3'5,5'-四甲基联苯胺 (TMB)]。此外，还采用了各种表征手段对其进行了深入的机理研究。值得一提的是，杂化结构产生的光致电子直接与 HO 反应，生成大量的 OH，从而有效地氧化 OPD 和 TMB。因此，这项工作为通过光刺激提高过氧化物酶样活性并推动基于酶的应用的发展提供了一种很有前途的方法。
