Few-Layer Black Phosphorus Nanosheets: A Metal-Free Cocatalyst for Photocatalytic Nitrogen Fixation
| Autor: | Zhigang Zou, Yong-Jun Yuan, Zhi-Kai Shen, Pei Wang, Zhen-Tao Yu, Lang Pei, Wangfeng Bai, Shiting Wu |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Nanocomposite
Materials science Charge density 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences 0104 chemical sciences Catalysis Crystal Chemical engineering Photocatalysis Nitrogen fixation General Materials Science 0210 nano-technology Nanosheet |
| Zdroj: | ACS Applied Materials & Interfaces. 12:17343-17352 |
| ISSN: | 1944-8252 1944-8244 |
| DOI: | 10.1021/acsami.9b21167 |
| Popis: | Exploiting an appropriate strategy to prepare fine crystal quality black phosphorus nanosheet (BPNS) catalyst is a major challenge for its practical application in catalysis. Herein, we address this challenge by developing a rapid electrochemical expansion strategy for scale preparation of fine crystal quality BPNSs from bulk black phosphorus, which was demonstrated to be an active cocatalyst for photocatalytic nitrogen fixation in the presence of CdS as a photocatalyst. The transient photocurrent and charge density studies show that the BPNSs can efficiently accelerate charge separation of CdS, leading to the enhanced photocatalytic activities of BPNS/CdS nanocomposites for nitrogen fixation. The 1.5% BPNS/CdS photocatalyst exhibits the highest photocatalytic activity for nitrogen fixation with an NH3 evolution rate of 57.64 μmol·L-1·h-1. This study not only affords a rapid and simple strategy for scale synthesis of fine crystal quality BPNSs but also provides new insights into the design and development of black phosphorus-based materials as low-cost metal-free cocatalysts for photocatalytic nitrogen fixation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|