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16 results on '"Zhu, Hexin"'

9. ZrO2/C Nanosphere Enables High‐Efficiency Nitrogen Reduction to Ammonia at Ambient Conditions.

Author

Dong, Shuyue, Xia, Jiaojiao, Zhu, Hexin, Du, Xiangning, Gu, Yang, Liu, Qian, Luo, Yonglan, Kong, Qingquan, Guo, Haoran, Li, Tingshuai, and Traversa, Enrico

Subjects
HABER-Bosch process, METAL catalysts, STANDARD hydrogen electrode, AMMONIA, NITROGEN, SURFACE reactions, ZIRCONIUM oxide
Abstract

Electrochemical synthesis of ammonia via nitrogen reduction reaction is a rational route to save energy and relieve pollution compared to the traditional Haber‐Bosch process. In this report, ZrO2 nanosphere derived from thermolysis of Zr‐based biphenyl‐4,4′‐dicarboxylic acid MOFs (ZrO2/C) as a non‐noble metal catalyst with large specific surface area and porous structure is proposed to fix nitrogen to ammonia at ambient conditions. Such catalyst achieves Faradaic efficiency of 11.86 % and a NH3 yield rate of 10.72 μg h−1 mg−1cat. at −0.6 V vs. the reversible hydrogen electrode in 0.1 M Na2SO4. First‐principles calculations confirm the alternating reaction at the catalyst surface. [ABSTRACT FROM AUTHOR]

Published
2022
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11. Electrodeposition of Amorphous Fe−P Shell on Co(OH)F Nanowire Arrays for Boosting Oxygen Evolution Electrocatalysis in Alkaline Media.

Author

Gu, Yang, Meng, Chuqian, Dong, Shuyue, Zhu, Hexin, Liu, Qian, Luo, Yonglan, Kong, Qingquan, and Li, Tingshuai

Subjects
ELECTROCATALYSIS, HYDROGEN evolution reactions, NANOWIRES, OXYGEN evolution reactions, ELECTROPLATING, ELECTROCATALYSTS
Abstract

High‐performance earth‐abundant electrocatalysts for oxygen evolution reaction (OER) are highly desirable. In this report, we successfully synthesized amorphous Fe−P shell electrodeposited on Co(OH)F nanowire arrays supported on titanium mesh (Fe−P@Co(OH)F/TM) as an efficient catalyst for OER. Such catalyst exhibits excellent OER activity with a low overpotential of 267 mV to reach the geometrical current density of 10 mA cm−2 in 1.0 M KOH. In addition, it has good electrochemical durability to maintain its activity for at least 20 h. [ABSTRACT FROM AUTHOR]

Published
2022
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15. Defective CuO-rich CuFe2O4nanofibers enable the efficient synergistic electrochemical reduction of nitrate to ammoniaElectronic supplementary information (ESI) available. See DOI: https://doi.org/10.1039/d2cy00910b

Author

Zhu, Hexin, Dong, Shuyue, Du, Xiangning, Du, Hongting, Xia, Jiaojiao, Liu, Qian, Luo, Yongsong, Guo, Haoran, and Li, Tingshuai

Abstract

We report defective Cu-rich CuFe2O4nanofibers as an efficient catalyst for reducing nitrate, which achieves an NH3yield of 9.21 mg h−1mgcat.−1and a Faradaic efficiency of 91.08% in 0.1 M PBS and 0.1 M NO3−and exhibits excellent stability. The reaction mechanism is revealed by theoretical calculations.

Published
2022
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