通过电化学 CO2 通过催化和 Ni/Cu 双活性站点进行减少来产生多碳产品
Keseven Lakshmanan1, Wei-Hsiang Huang2, Soressa Abera Chala3
1NanoElectrochemistry Laboratory, Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei, 106, Taiwan.
分子双活性站点使二氧化碳减排中的C2产品能够有效地进行碳-碳合. 一种新的Ni/Cu近位双活性位点催化剂 (Ni/Cu-PASC) 实现了55%的乙醇选择性,优于单元催化剂的性能.
科学领域:
- 催化剂是一种催化剂.
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
背景情况:
- 单原子催化剂具有独特的优势,但分子双活性位点对于降低CO2到C2产品中的C-C合至关重要.
- 开发有效的二氧化碳减排反应 (CO2RR) 催化剂对于可持续的化学合成至关重要.
研究的目的:
- 为增强CO2RR开发一种新型近端双活性位点催化剂 (Ni/Cu-PASC).
- 研究由双活性位点促进的C-C合的机制.
主要方法:
- 通过物理混合商业Ni-phthalocyanine (Ni-Pc) 和Cu-phthalocyanine (Cu-Pc) 来产生Ni/Cu-PASC.
- 使用扫描传输电子显微镜 (STEM),传输电子显微镜 (TEM) 能量分散光谱 (EDS),现场X射线吸收光谱 (XAS) 和现场福里埃转换红外光谱 (FTIR).
主要成果:
- 通过C-C合,Ni/Cu-PASC通过C-C合显示出对乙醇的高选择性 (55%法拉代效率).
- 单元Ni-Pc和Cu-Pc只能生产单碳产品 (CO,HCOO-). 这种产品不存在.
- 在现场XAS和FTIR揭示了*CHO中间体的形成,这对于C2产品产生至关重要,并抑制了HCOO-形成.
结论:
- /-PASC有效地利用近端双活性位点,有效地将二氧化碳降低到乙醇.
- 这项工作突出了协调设计的双活性站点在二氧化碳转化中用于先进的催化应用的潜力.
更多相关视频
08:40Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
Published on: December 6, 2021
09:18Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications
Published on: June 21, 2017
相关概念视频
Electron Carriers
Over the many stages of cellular respiration, glucose breaks down into carbon dioxide and water. Electron carriers pick up electrons lost by glucose in these reactions, temporarily storing and releasing them into the electron...
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
Catalysis
Role of Reduced Coenzymes NADH and FADH₂
Electrodeposition
Electrodeposition can...
Oxidation and Reduction of Organic Molecules
The removal of an electron from a molecule, results in a...
