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Title: Cobalt nitride as a novel cocatalyst to boost photocatalytic CO₂ reduction
Authors: Di, Jun
Chen, Chao
Zhu, Chao
Song, Pin
Duan, Meilin
Xiong, Jun
Long, Ran
Xu, Manzhang
Kang, Lixing
Guo, Shasha
Chen, Shuangming
Chen, Hailong
Chi, Zhen
Weng, Yu-Xiang
Li, Huaming
Song, Li
Wu, Minghong
Yan, Qingyu
Li, Shuzhou
Liu, Zheng
Keywords: Engineering::Materials
Issue Date: 2021
Source: Di, J., Chen, C., Zhu, C., Song, P., Duan, M., Xiong, J., Long, R., Xu, M., Kang, L., Guo, S., Chen, S., Chen, H., Chi, Z., Weng, Y., Li, H., Song, L., Wu, M., Yan, Q., Li, S. & Liu, Z. (2021). Cobalt nitride as a novel cocatalyst to boost photocatalytic CO₂ reduction. Nano Energy, 79, 105429-.
Project: MOE2016-T2-1-131
2017- T1-001-075
Journal: Nano Energy
Abstract: Photocatalytic CO₂ reduction has been regarded as an appealing pathway for CO₂ conversion to hydrocarbon fuels. To boost the CO₂ photoreduction performance, developing suitable cocatalyst on the photocatalysts is an efficient strategy. Herein, Co₂N is employed as novel noble-metal-free cocatalyst to promote the CO₂ photoreduction performance of BiOBr ultrathin nanosheets. The optimal Co₂N/BiOBr delivers a high selectivity CO formation rate of 67.8 µmol g−1 h−1 in pure water without sacrificial reagent or extra photosensitizer, roughly 6 times higher than BiOBr. Co2N can create strong electronic interactions with BiOBr, steering the electron transfer from BiOBr, across the interface to metallic Co₂N and finally to the surface. Apart from the charge separation steering, the activation energy barrier can be lowered on Co₂N surface via stabilize COOH* intermediates, tuning the rate-limiting step from the formation of COOH* on BiOBr to the formation of CO* on Co₂N, jointly optimize the CO₂ photoreduction activity. This strategy affords an accessible pathway for designing cocatalysts for efficient CO₂ photoreduction.
ISSN: 2211-2855
DOI: 10.1016/j.nanoen.2020.105429
Rights: © 2020 Elsevier Ltd. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MSE Journal Articles

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