Energy-resolved distribution of electron traps for O/S-doped carbon nitrides by reversed double-beam photoacoustic spectroscopy and the photocatalytic reduction of Cr(vi)

Chitiphon Chuaicham; Sekar Karthikeyan; Radheshyam R Pawar; Yihuang Xiong; Ismaila Dabo; Bunsho Ohtani; Yoonyoung Kim; Jun Tae Song; Tatsumi Ishihara; Keiko Sasaki

doi:10.1039/c9cc09988c

Energy-resolved distribution of electron traps for O/S-doped carbon nitrides by reversed double-beam photoacoustic spectroscopy and the photocatalytic reduction of Cr(vi)

Chem Commun (Camb). 2020 Apr 4;56(26):3793-3796. doi: 10.1039/c9cc09988c. Epub 2020 Mar 4.

Authors

Chitiphon Chuaicham¹, Sekar Karthikeyan, Radheshyam R Pawar, Yihuang Xiong, Ismaila Dabo, Bunsho Ohtani, Yoonyoung Kim, Jun Tae Song, Tatsumi Ishihara, Keiko Sasaki

Affiliation

¹ Department of Earth Resources Engineering, Faculty of Engineering, Kyushu University, 744 Motooka, Nishiku, Fukuoka 819-0395, Japan. keikos@mine.kyushu-u.ac.jp.

PMID: 32129327
DOI: 10.1039/c9cc09988c

Abstract

We report for the first time to our knowledge the identification of heteroatom-doped and undoped C₃N₄ with the energy-resolved distribution of electron traps (ERDT) near the conduction band bottom position (CBB) using reversed double-beam photoacoustic spectroscopy. The ERDT/CBB pattern is used to classify the type of elemental doping in C₃N₄, related to photocatalytic efficiency.