Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Synthesis and Particle Size Control of δ-FeOOH Using H2O2 Oxidizing Agent

H2O2 산화제를 이용한 δ-FeOOH의 합성과 입자 크기 제어

  • Seongmin Shin (Department of Electrical Engineering, Gachon University) ;
  • Kyunghwan Kim (Department of Electrical Engineering, Gachon University) ;
  • Jeongsoo Hong (Department of Electrical Engineering, Gachon University)
  • Received : 2024.01.22
  • Accepted : 2024.01.29
  • Published : 2024.05.01
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Abstract

In this study, Iron (III) oxide-hydroxide (δ-FeOOH) was successfully synthesized using hydrogen peroxide (H2O2) as an oxidizing agent. The synthesis of δ-FeOOH was carried out by controlling the amount of H2O2, and pure δ-FeOOH was successfully synthesized in ranges from 0.2 mL to 0.6 mL of H2O2. The size of the synthesized δ-FeOOH particles was compared by controlling the amount of oxidant H2O2. The average particle size of the synthesized pure δ-FeOOH particles increased from 875.1 nm to 897.2 nm as the amount of H2O2 was increased. The optical properties of δ-FeOOH synthesized under these specific conditions were investigated. All δ-FeOOH showed a similar trend of increasing and decreasing light absorption from 800 nm to 400 nm, although there was a slight difference in the amount of light absorption, with the largest amount of light absorption at 410 nm. The band gap energy of δ-FeOOH through the Tauc plot method was about 2.1~2.2 eV when H2O2 was 0.2~1.4mL. With a sufficient small particle size, simple control of that particle size, and a small band gap energy enough to absorb light in the visible spectrum, δ-FeOOH could be useful in a variety of applications, including photoelectrochemistry and battery electrodes.

Keywords

Acknowledgement

이 연구는 2023년도 산업통상자원부 및 산업기술평가관리원(KEIT) 연구비 지원(RS-2023-00227306) 및 2022년도 정부(산업통상자원부)의 재원으로 한국산업기술진흥원의 지원을 받아 수행된 연구임(P0012451, 2022년 산업혁신인재성장지원사업).

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