요소 산화반응을 위한 NiFe2O4 나노파티클 촉매 합성 및 특성 분석 (Synthesis and characterization of NiFe2O4 nanoparticle electrocatalyst for urea and water oxidation)

서지정보

· 발행기관 : 한국표면공학회
· 수록지 정보 : 한국표면공학회지 / 56권 / 4호 / 243 ~ 249페이지
· 저자명 : 윤기용, 이경복, 김도형, 노희윤, 최승목, 이지훈, 정재훈, 양주찬

초록

Urea oxidation reaction (UOR) via electrochemical oxidation process can replace oxygen evolution reaction (OER) for green hydrogen production since UOR has lower thermodynamic potential (0.37 VRHE) than that of OER (1.23 VRHE). However, in the case of UOR, 6 electrons are required for the entire UOR. For this reason, the reaction rate is slower than OER, which requires 4 electrons. In addition, it is an important challenge to develop catalysts in which both oxidation reactions (UOR and OER) are active since the active sites of OER and UOR are opposite to each other. We prove that among the NiFe2O4 nanoparticles synthesized by the hydrothermal method at various synthesis temperatures, NiFe2O4 nanoparticle with properly controlled particle size and crystallinity can actively operate OER and UOR at the same time.

영어초록

Urea oxidation reaction (UOR) via electrochemical oxidation process can replace oxygen evolution reaction (OER) for green hydrogen production since UOR has lower thermodynamic potential (0.37 VRHE) than that of OER (1.23 VRHE). However, in the case of UOR, 6 electrons are required for the entire UOR. For this reason, the reaction rate is slower than OER, which requires 4 electrons. In addition, it is an important challenge to develop catalysts in which both oxidation reactions (UOR and OER) are active since the active sites of OER and UOR are opposite to each other. We prove that among the NiFe2O4 nanoparticles synthesized by the hydrothermal method at various synthesis temperatures, NiFe2O4 nanoparticle with properly controlled particle size and crystallinity can actively operate OER and UOR at the same time.

참고자료

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