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Sulfur vacancies-doped Sb2S3 nanorods as high-efficient electrocatalysts for dinitrogen fixation under ambient conditions
- Source :
- Green Energy & Environment. 7:755-762
- Publication Year :
- 2022
- Publisher :
- Elsevier BV, 2022.
-
Abstract
- Tuning surface electron transfer process by sulfur (S)-vacancies engineering is an efficient strategy to develop high-efficient catalysts for electroreduction N2 reaction (NRR). Herein, the distinct Sb2S3 nanorods with S-vacancies (Sv-Sb2S3) have been synthesized by a simple two-step method including hydrothermal and hydrogenation in H2/Ar atmosphere, which shows improved performance for NRR with the NH3 yield rate of 10.85 μg h−1 mgcat−1 at −0.4 V vs. RHE, the faradaic efficiency (FE) of 3.75% at −0.3 V vs. RHE and excellent stability for 24 h, largely outperforming bulk Sb2S3. X-ray photoelectron spectroscopy (XPS) and density function theory (DFT) calculations demonstrate that the abundant S-vacancies can create an electron-deficient environment and modulate the electron delocalization in Sv-Sb2S3, which can not only facilitate the N2 molecule adsorption, but also activate the N[tbnd]N, resulting in the enhanced performance for NRR. © 2020 Institute of Process Engineering, Chinese Academy of Sciences
- Subjects :
- Materials science
Renewable Energy, Sustainability and the Environment
Doping
Inorganic chemistry
chemistry.chemical_element
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Sulfur
0104 chemical sciences
Catalysis
Electron transfer
chemistry
X-ray photoelectron spectroscopy
Nanorod
Density functional theory
0210 nano-technology
Faraday efficiency
Subjects
Details
- ISSN :
- 24680257
- Volume :
- 7
- Database :
- OpenAIRE
- Journal :
- Green Energy & Environment
- Accession number :
- edsair.doi...........df40d514d4e3bc616515354bc62e57e3