| Authors | Hossein Farsi,neda barekati,Shokufeh Moghiminia,Seyyed Amirhossein Hosseini,Tykhon Zubkov,Justin Estes,Levi Dumpert,Ian lightcap,Zhihai Li |
|---|---|
| Journal | ECS Journal of Solid State Science and Technology |
| Page number | 830071-830078 |
| Serial number | 12 |
| Volume number | 8 |
| IF | 0.917 |
| Paper Type | Full Paper |
| Published At | 2023 |
| Journal Type | Typographic |
| Journal Country | Iran, Islamic Republic Of |
| Journal Index | ISI،JCR،Scopus |
Abstract
Metal oxides have been considered as photo/electrocatalysts for water splitting because of their compositional and structural flexibility, and consequently, their tunable band gaps. These semiconductor nanomaterials could be used as electrocatalysts for artificial photosynthesis, which mainly includes the oxygen evolution reaction (OER) at the anode and the hydrogen evolution reaction (HER) at the cathode. In this study, we synthesized nanostructured manganese tungstate (MnWO4) using the hydrothermal method as a bifunctional electrocatalyst for HER and OER reactions, which exhibit the Tafel slopes of 160 and 83 mV dec−1, respectively, in alkaline medium. Prepared nanomaterials were characterized by transmission electron microscopy (TEM) and Xray photoelectron spectroscopy (XPS). We demonstrated an approach to sketch the electronic diagram of nanostructured MnWO4 by using a combination of UV–Vis diffuse reflectance spectroscopy (DRS) and Mott–Schottky analysis via electrochemical impedance spectroscopy
tags: MnWO4, Nanostructure, water splitting