@article{Tan2023, 
author = {Meijie Tan and Xiaoqian Han and Sen Ru and Chao Zhang and Zhouru Ji and Zhaolin Shi and Guomeng Qiao and Yunying Wang and Ruixue Cui and Qiquan Luo and Jiqing Jiao and Yaguang Li and Tongbu Lu},
title = {Low-loading gold in situ doped with sulfur by biomolecule-assisted approach for promoted electrochemical carbon dioxide reduction},
year = {2023},
journal = {Nano Research},
volume = {16},
number = {2},
pages = {2059-2064},
keywords = {nanocomposites, heterogeneous catalyst, electrochemical CO2 reduction, heteroatoms, in situ sulfured},
url = {https://www.sciopen.com/article/10.1007/s12274-022-4878-3},
doi = {10.1007/s12274-022-4878-3},
abstract = {For electrochemical carbon dioxide reduction (CO2RR), CO2-to-CO conversion is considered an ideal route towards carbon neutrality for practical applications. Gold (Au) is known as a promising catalyst with high selectivity for CO; however, it suffers from high cost and low mass-specific activity. In this study, we design and prepare a catalyst featuring uniform S-doped Au nanoparticles on N-doped carbon support (denoted as S-Au/NC) by an in situ synthesis strategy using biomolecules. The S-Au/NC displays high activity and selectivity for CO in CO2RR with a Au loading as low as 0.4 wt.%. The Faradaic efficiency of CO (FECO) for S-Au/NC is above 95% at −0.75 V (vs. RHE); by contrast, the FECO of Au/NC (without S) is only 58%. The Tafel slope is 77.4 mV·dec−1, revealing a favorable kinetics process. Furthermore, S-Au/NC exhibits an excellent long-term stability for CO2RR. Density functional theory (DFT) calculations reveal that the S dopant can boost the activity by reducing the free energy change of the potential-limiting step (formation of the *COOH intermediate). This work not only demonstrates a model catalyst featuring significantly reduced use of noble metals, but also establishes an in situ synthesis strategy for preparing high-performance catalysts.}
}