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| Type |
Symposium |
| Area |
Light Driven Carbon Recycling: Photocatalytic Carbon Dioxide Reduction |
| Room No. |
Room 401 |
| Time |
THU 16:35-: |
| Code |
IND-3 |
| Subject |
Electrochemical CO2 reduction to valuable chemicals for artificial photosynthesis |
| Authors |
Yun Jeong Hwang
Clean Energy Research Center, Korea Institute of Science and Technology, Korea |
| Abstract |
The electrochemical CO2 reduction reaction to value-added hydrocarbon has been proposed as one of the pathways to store the electrical energy, and it can be coupled with renewable energy resources for carbon recycling. In this talk, I will cover our recent efforts in designing electrocatalysts for CO2 reduction as well as solar-to-fuel conversion integrated device. Au, Ag, Zn, and carbon-based materials have been developed for CO2 reduction to CO production, and recent studies have reported high selectivity for CO production. There can be several strategies to increase electrocatalytic activity for CO2 reduction reaction while effectively suppressing HER. i) Introducing nanostructure having low under coordinated states have been proposed to have selective CO production, but in many of the cases they can increase the HER as well. ii) Defective structure such as grain boundary have been successfully demonstrated to increase CO2 reduction reaction activity by changing the interaction between the intermediate species and catalyst surface. iii) Many of the metal catalysts also showed improved activity by mediating oxygen species during synthesis which can causes the morphology changes as well as oxidation state changes of the metal surface. iv) Our group also found that surface mediated organic molecules can affect the selective CO production significantly by decreasing the overpotential. |
| E-mail |
yjhwang@kist.re.kr |
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121st General Meeting of the KCS