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Your search keyword '"Li, Jian‐Feng"' showing total 2,284 results
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2,284 results on '"Li, Jian‐Feng"'

8. In situ Raman reveals the critical role of Pd in electrocatalytic CO2 reduction to CH4 on Cu-based catalysts.

Author

Du, Zi-Yu, Wang, Kun, Xie, Yi-Meng, Zhao, Yu, Qian, Zheng-Xin, Li, Si-Bo, Zheng, Qing-Na, Tian, Jing-Hua, Rudnev, Alexander V., Zhang, Yue-Jiao, Zhang, Hua, and Li, Jian-Feng

Subjects
SERS spectroscopy, BIMETALLIC catalysts, CATALYSTS, CARBON offsetting, ELECTROCATALYSTS, GOLD nanoparticles, ATOMIC hydrogen
Abstract

Electrocatalytic CO2 reduction reaction (CO2RR) for CH4 production presents a promising strategy to address carbon neutrality, and the incorporation of a second metal has been proven effective in enhancing catalyst performance. Nevertheless, there remains limited comprehension regarding the fundamental factors responsible for the improved performance. Herein, the critical role of Pd in electrocatalytic CO2 reduction to CH4 on Cu-based catalysts has been revealed at a molecular level using in situ surface-enhanced Raman spectroscopy (SERS). A "borrowing" SERS strategy has been developed by depositing Cu–Pd overlayers on plasmonic Au nanoparticles to achieve the in situ monitoring of the dynamic change of the intermediate during CO2RR. Electrochemical tests demonstrate that Pd incorporation significantly enhances selectivity toward CH4 production, and the Faradaic efficiency (FE) of CH4 is more than two times higher than that for the catalysts without Pd. The key intermediates, including *CO2−, *CO, and *OH, have been directly identified under CO2RR conditions, and their evolution with the electrochemical environments has been determined. It is found that Pd incorporation promotes the activation of both CO2 and H2O molecules and accelerates the formation of abundant active *CO and hydrogen species, thus enhancing the CH4 selectivity. This work offers fundamental insights into the understanding of the molecular mechanism of CO2RR and opens up possibilities for designing more efficient electrocatalysts. [ABSTRACT FROM AUTHOR]

Published
2024
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19. Sophisticated construction of single-atom cobalt catalyst based on microbial hyphae for high-performance hydrogenation

Author

Kuang, Junhua, Gong, Minghao, Chen, Gaofeng, Peng, Li, Zou, Chen, Peng, Zhiqing, Chen, Weiming, Li, Yin, Zhang, Yuting, Xue, Tianwei, Li, Chuang, Dong, Yangyang, Wu, Jing, Akpinar, Isil, Lin, Lu, Zeng, Xianhai, Tang, Xing, Sun, Yong, Dong, Jin-Chao, Sun, Lizhong, Chen, Wenxing, Lyu, Pengbo, Yang, Shuliang, Cao, Changyan, Song, Weiguo, and Li, Jian-Feng

Published
2024
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25. Identification of a quasi-liquid phase at solid–liquid interface

Author

Peng, Xinxing, Zhu, Fu-Chun, Jiang, You-Hong, Sun, Juan-Juan, Xiao, Liang-Ping, Zhou, Shiyuan, Bustillo, Karen C, Lin, Long-Hui, Cheng, Jun, Li, Jian-Feng, Liao, Hong-Gang, Sun, Shi-Gang, and Zheng, Haimei

Subjects
Chemical Sciences, Physical Chemistry, Bioengineering, Nanotechnology, MSD-General, MSD-In-situ TEM
Abstract

An understanding of solid-liquid interfaces is of great importance for fundamental research as well as industrial applications. However, it has been very challenging to directly image solid-liquid interfaces with high resolution, thus their structure and properties are often unknown. Here, we report a quasi-liquid phase between metal (In, Sn) nanoparticle surfaces and an aqueous solution observed using liquid cell transmission electron microscopy. Our real-time high-resolution imaging reveals a thin layer of liquid-like materials at the interfaces with the frequent appearance of small In nanoclusters. Such a quasi-liquid phase serves as an intermediate for the mass transport from the metal nanoparticle to the liquid. Density functional theory-molecular dynamics simulations demonstrate that the positive charges of In ions greatly contribute to the stabilization of the quasi-liquid phase on the metal surface.

Published
2022

26. An Experimental Study on the Acoustic Emission Response of Reinforced Concrete Pipe Under Diametrical Load

Author

Li, PengPeng, Li, Jian Feng, Wang, YaJian, Ye, ZhouJing, Liu, HuiFang, Yang, SongLi, Wang, LinBing, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, and Liu, Xianbin, editor

Published
2023
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