Hot Carriers and Photothermal Effects of Monolayer MoOx for Promoting Sulfite Oxidase Mimetic Activity
| Autor: | Guowei Yang, Tongming Chen, Yuan Chen, Xiaoju Wu |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Photothermal effect Nanotechnology 02 engineering and technology Photothermal therapy 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Nanomaterials chemistry.chemical_compound Sulfite chemistry Sulfite oxidase Monolayer Photocatalysis General Materials Science Surface plasmon resonance 0210 nano-technology |
| Zdroj: | ACS Applied Materials & Interfaces. 12:19357-19368 |
| ISSN: | 1944-8252 1944-8244 |
| DOI: | 10.1021/acsami.0c04987 |
| Popis: | Local surface plasmon resonance (LSPR)-enhanced catalysis has brought a substantial amount of opportunities across various disciplines such as photocatalysis, photodetection, and photothermal therapeutics. Plasmon-induced photothermal and hot carriers effects have also been utilized to activate the enzyme-like reactions. Compared with natural enzymes, the relatively low catalytic performance of nanozymes severely hampered the potential applications in the field of biomedicine. For these issues mentioned above, herein, we demonstrate a highly efficient sulfite oxidase (SuOx) mimetic performance of plasmonic monolayer MoOx (ML-MoOx) upon LSPR excitation. We also established that the considerable photothermal effect and the injection of hot carriers induced by LSPR are responsible for promoting the SuOx activity of ML-MoOx. The high transient local temperature on the surface of ML-MoOx generated by the photothermal effect facilitates to impact the reaction velocity and feed the SuOx-like activity, while the generation of hot carriers which are suggested as predominant effects catalyzes the oxidation of sulfite to sulfate through significantly decreasing the activation energy for the SuOx-like reaction. These investigations present a contribution to the basic understanding of plasmon-enhanced enzyme-like reaction and provided an insight into the optimization of the SuOx mimetic performance of nanomaterials. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|