Publications by authors named "Yuanting Lei"
Owing to their synergistic interactions, dual-atom catalysts (DACs) with well-defined active sites are attracting increasing attention. However, more experimental research and theoretical investigations are needed to further construct explicit dual-atom sites and understand the synergy that facilitates multistep catalytic reactions. Herein, we precisely design a series of asymmetric selenium-based dual-atom catalysts that comprise heteronuclear SeN-MN (M = Fe, Mn, Co, Ni, Cu, Mo, etc.
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- Double-atom catalysts (DACs) enhance catalytic performance in various reactions but face challenges in metal loading and longevity.
- Researchers developed a new catalyst, A-FeSN/SNC, featuring unique diatomic iron sites on nitrogen-doped carbon, achieving a high metal loading of 6.72 wt%.
- This new catalyst outperformed commercial options in oxygen evolution reactions, showing low overpotential and impressive stability, maintaining over 97% activity for more than 2000 hours.
Article Synopsis
- The development of sub-nanometer cluster catalysts (<1 nm) enhances atomic efficiency and specific activity, particularly through a core-shell design combining cobalt-cerium oxide and iridium clusters (Ir cluster@CoO/CeO).
- This innovative structure increases intrinsic activity and conductivity, making it highly effective for full-pH water splitting with low overpotentials for hydrogen and oxygen production reactions.
- DFT calculations reveal that the electron transfer among the components enriches the surface with electrons, optimizing the energy needed for reaction intermediates, which accelerates both hydrogen and oxygen evolution reactions.
With more flexible active sites and intermetal interaction, dual-atom catalysts (DACs) have emerged as a new frontier in various electrocatalytic reactions. Constructing a typical p-d orbital hybridization between p-block and d-block metal atoms may bring new avenues for manipulating the electronic properties and thus boosting the electrocatalytic activities. Herein, we report a distinctive heteronuclear dual-metal atom catalyst with asymmetrical FeSn dual atom sites embedded on a two-dimensional CN nanosheet (FeSn-CN), which displays excellent oxygen reduction reaction (ORR) performance with a half-wave potential of 0.
View Article and Find Full Text PDFAim: This study assessed the trends in the age at menarche in Chinese schoolgirls from the majority Han group and 21 ethnic minorities from 2005 to 2014. We also compared the group differences during the study period.
Methods: A total of 344 230 girls aged 9-18 years were extracted from the 2005, 2010 and 2014 Chinese National Survey on Students' Constitution and Health.
Objective: We sought to examine changes in regional and sex disparities in stunting, thinness, and overweight among Chinese school-aged children from 1985 to 2014.
Methods: We analyzed data on 1,489,953 children aged 7-18 years in the Chinese National Survey on Students' Constitution and Health. Stunting, thinness, and overweight were defined according to WHO anthropomorphic definitions.