Formation of a p-n heterojunction photocatalyst by interacing of graphitic carbon nitride and delafossite CuGaO2

doi:10.1002/jccs.202200083

機構典藏 > College of Engineering > Graduate Institute & Department of Electrical Engineering > Journal Article > Item 987654321/124102

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Title:	Formation of a p-n heterojunction photocatalyst by interacing of graphitic carbon nitride and delafossite CuGaO2
Authors:	Martinez, Benjamin;Chang, Dai-Ning;Huang, Yu-Cheng;Dong, Chung-Li;Chiu, Te-Wei;Chiang, Ming-Hsi;Kuo, Chun-Hong
Keywords:	charge transfer;hydrogen;p-n heterojunction;water splitting;XAS;XPS
Date:	2022-07-18
Issue Date:	2023-05-15 12:10:27 (UTC+8)
Publisher:	Wiley Online Library
Abstract:	Photocatalysts have focused on scientific endeavors for five decades already. Their ability to generate solar fuel via relatively environmentally benign processes brings promises of a future with increasingly sustainable energy production. A class of materials, heterojunction (HJ) semiconductors, have immense potential due to their versatility, stability, and cost-effectiveness. In addition, meticulous engineering of p-n HJ enables the apparition of an electric field at the junction, a supplementary driving force that drives the charge carriers to separate effectively upon illumination. Therefore, we combined n-type carbon nitride with p-type CuGaO2 to form a photo-active p-n HJ. Mechanistic insights being highly sought-after, we then employed X-ray photoelectron spectroscopy and X-ray absorption spectroscopy as complementary and orbital-specific techniques to probe the changes caused by interfacing CuGaO2 with g-C3N4.
Relation:	Journal of the Chinese Chemical Society 69(7), p.1042-1050
DOI:	10.1002/jccs.202200083
Appears in Collections:	[Graduate Institute & Department of Electrical Engineering] Journal Article

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