ArticleACS omega2025
Evaluation of the Valence Band Maximum of Hematite Particles Dispersed in Aqueous Solution: An Approach Using Photoemission Yield Spectroscopy in Air.
Article in ACS omega, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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3 authors.
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Abstract
Surface electronic states in aqueous solutions affect many properties of materials used in aqueous solutions, for example, the reactivity of photocatalysts. Therefore, evaluation of the surface electronic states is a coveted objective for developing such materials. Although several methods to evaluate surface electronic states in aqueous solutions have been developed, those methods entail difficulties; electrochemical impedance spectroscopy (EIS) requires electrode fabrication, and photoelectron spectroscopy requires synchrotron radiation. Herein, we present the first successful application of photoemission yield spectroscopy in air (PYSA) as a method to evaluate the surface electronic states of particles in aqueous solution. This method is simple and easily accessible in a laboratory. PYSA can measure the valence band maximum (
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