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자연과학
공학
의약학
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예술체육학
복합학
DBpia AI
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AI 아이디어
AI 리더
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Citeasy
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지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
With sunlight as the most abundant energy source on earth, solar water splitting has the potential to produce renewable hydrogen at a commercially competitive cost. Monoclinic BiVO 4 is a promising n‐type semiconductor for photocatalytic and photoelectrochemical (PEC) water oxidation. One of the simplest and most energy‐efficient approaches for producing BiVO 4 is hydrothermal synthesis. This method is carried out at moderate temperatures, while particle size, shape, and crystallinity are controlled by a wide range of synthesis parameters, which can be further expanded by using additives. In this work, these parameters systematically vary to study their influence on the hydrothermal synthesis of BiVO 4 , with a focus on KCl as an additive are systematically vary. By X‐ray diffraction, scanning electron microscopy, and transmission electron microscopy is shown that KCl acts as structure‐directing agent, leading to significant changes in morphology and crystallinity. Since the color and the optical spectra of BiVO 4 powders indicate a redshift with increasing KCl concentration, an additional anionic substitution by Cl − takes place is proposed, a hypothesis supported by X‐ray photoelectron spectroscopy measurements and density functional theory calculations. The highest photocatalytic performance (1328 µmol g −1 h −1 ) is reached for 25 mmol L −1 KCl, while particle‐based photoelectrodes decorated with CoPi cocatalysts showed an improved photocurrent density (393 µA cm −2 ) at 1.23 V vs. reversible hydrogen electrode (RHE).
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
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