Wafer-scale Si nanoconed arrays induced syngas in the photoelectrochemical CO2 reduction
| Autor: | Jinhua Ye, Peng Li, Hong Pang, Toshiaki Takei, Hao Huang, Gaoliang Yang, Fumihiko Ichihara |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Nanostructure business.industry Band gap Doping Nanotechnology 02 engineering and technology General Chemistry Substrate (electronics) 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Catalysis 0104 chemical sciences Semiconductor Electrode Wafer 0210 nano-technology business Syngas |
| Zdroj: | Catalysis Today. 339:321-327 |
| ISSN: | 0920-5861 |
| DOI: | 10.1016/j.cattod.2019.04.042 |
| Popis: | Photoelectrochemical (PEC) CO2 reduction offers a promising way to carry out the CO2 sequestration and develop the carbon-neutral technology. Doped Si is by far one of the most technologically important semiconductors with high conductivity and narrow bandgap, potential for CO2 reduction. However, the previous reports on PEC CO2 reduction over Si electrodes were not involved with many nanostructures. Syngas, a kind of chemical feedstocks and a crucial intermediate for hydrocarbon fuels, is highly demanded for industry. Herein, we used a wafer-scale nanoconed Si arrays substrate to load the metallic nanoparticles (Au and Cu). Effective PEC CO2 reduction into syngas was achieved in the aqueous solution with no sacrificial reagents. In contrast, planar Si seldom generated CO under the same reactant environment. Our finding deepens the comprehension of PEC CO2 reduction over the nanostructured materials and gives an inspiration for rational design of the PEC catalysts towards solar-to-chemical conversion. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect