# Ultrafast electron transfer at the In2O3/Nb2O5 S-scheme interface for CO2 photoreduction

“Ultrafast electron transfer at the In2O3/Nb2O5 S-scheme interface for CO2 photoreduction” (2024), by Xianyu Deng et al. Energy research paper. Original abstract below, unchanged. No free PDF was found.

- Authors: Xianyu Deng, Jianjun Zhang, Kezhen Qi, Guijie Liang, Feiyan Xu, Jiaguo Yu
- Published: June 5, 2024
- Field: Energy
- DOI: https://doi.org/10.1038/s41467-024-49004-7
- Source: https://doi.org/10.1038/s41467-024-49004-7

## Abstract

Constructing S-scheme heterojunctions proves proficient in achieving the spatial separation of potent photogenerated charge carriers for their participation in photoreactions. Nonetheless, the restricted contact areas between two phases within S-scheme heterostructures lead to inefficient interfacial charge transport, resulting in low photocatalytic efficiency from a kinetic perspective. Here, In 2 O 3 /Nb 2 O 5 S-scheme heterojunctions are fabricated through a straightforward one-step electrospinning technique, enabling intimate contact between the two phases and thereby fostering ultrafast interfacial electron transfer (<10 ps), as analyzed via femtosecond transient absorption spectroscopy. As a result, powerful photo-electrons and holes accumulate in the Nb 2 O 5 conduction band and In 2 O 3 valence band, respectively, exhibiting extended long lifetimes and facilitating their involvement in subsequent photoreactions. Combined with the efficient chemisorption and activation of stable CO 2 on the Nb 2 O 5 , the resulting In 2 O 3 /Nb 2 O 5 hybrid nanofibers demonstrate improved photocatalytic performance for CO 2 conversion.

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