http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
광전기화학적 물 분해를 위한 Bi 기반의 금속유기복합체가 도포된 BiVO₄ 광전극
김승규(Seungkyu Kim),이상한(Sanghan Lee) 한국세라믹학회 2022 세라미스트 Vol.25 No.1
Decoration of metal-organic frameworks (MOFs) is emerging as attractive co-catalysts for effective photoelectrochemical (PEC) water oxidation. In this work, we report Bi-based MOF nanoparticle decorated BiVO₄ thin film via a multi-step immersion process for efficient PEC water oxidation. Bi-MOF on the surface improves active sites and promotes surface charge transport under PEC reaction. The PEC performance of our Bi-MOF/BiVO₄ electrode is 2 times higher than that of the bare BiVO₄ sample. In addition, the operation stability was significantly improved and its value is retained even after 24 h. These results reveal that Bi- based MOF decoration is an attractive strategy to improve the surface kinetics and stability as a co-catalyst and passivation layer for efficient water oxidation.
이윤형(Yoonhyung Lee),허상구(Sangku Hur),최재식(Jaesick Choi),정진태(Jintai Chung),이부영(Buyoung Lee),이정아(Jung-ah Lee),김승규(Seungkyu Kim) 한국자동차공학회 2021 한국자동차공학회 부문종합 학술대회 Vol.2021 No.6
In many vehicle models, sand-scratching sound occurred in the cabin heater-core under certain cold engine conditions & high engine RPM. An interesting fact is that it may or may not occur depending on the engine type within the same vehicle model, and the results were different depending on the vehicle model even with the same engine. In order to remove this noise, we derived and applied countermeasures for each vehicle model, and the result was that the overall noise was reduced. However, it was concluded that it was difficult to establish a fundamental countermeasure without analyzing the exact joint generation mechanism, which still occurred in some car models. In this study, a robust improvement plan was devised by indentifying the exact mechanism for the occurrence of abnormal flow noise, and it was attempted to explain this phenomenon and solutions.