首页|Metal-encapsulated nitrogen-doped carbon nanotube arrays electrode for enhancing sulfion oxidation reaction and hydrogen evolution reaction by regulating of intermediate adsorption

Metal-encapsulated nitrogen-doped carbon nanotube arrays electrode for enhancing sulfion oxidation reaction and hydrogen evolution reaction by regulating of intermediate adsorption

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For treatment of sulfion-containing wastewater,coupling the electrochemical sulfion oxidation reaction(SOR)with hydrogen evolution reaction(HER)can be an ideal way for sulfur and H2 resources recovery.Herein,we synthesize a metal-modified carbon nanotube arrays electrode(Co@N-CNTs/CC)for SOR and HER.This electrode has excellent performance for SOR and HER attributed to the unique array structure.It can achieve 99.36 mA/cm2 at 0.6 V for SOR,and 10mA/cm2 at 0.067 V for HER.Density functional theory calculations verify that metal modification is able to regulate the electronic structure of carbon nanotube,which is able to optimize the adsorption of intermediates.Employed Co@N-CNTs/CC as bifunctional elec-trodes to establish a hybrid electrolytic cell can reduce about 67％of energy consumption compared with the traditional water splitting electrolytic cell.Finally,the hybrid electrolytic cell is used to treat actual sulfion-containing wastewater,achieving the sulfur yield of 30 mg h-1 cm-2 and the hydrogen production of 0.64mL/min.

Sulfion oxidation reactionHydrogen evolution reactionNitrogen-doping carbon nanotubeCore-shell structureResource upgrade

Xiao Li、Wanqiang Yu、Yujie Wang、Ruiying Liu、Qingquan Yu、Riming Hu、Xuchuan Jiang、Qingsheng Gao、Hong Liu、Jiayuan Yu、Weijia Zhou

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Institute for Advanced Interdisciplinary Research(iAIR),School of Chemistry and Chemical Engineering,University of Jinan,Jinan 250022,China

Institute for Smart Materials & Engineering,School of Materials Science and Engineering,University of Jinan,Ji'nan 250022,China

College of Chemistry and Materials Science,and Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications,Jinan University,Guangzhou 510632,China

State Key Laboratory of Crystal Materials,Shandong University,Jinan 250100,China

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2024

10.1016/j.cclet.2023.109166

中国化学快报(英文版)
中国化学会

中国化学快报(英文版)

CSTPCD
影响因子：0.771
ISSN：1001-8417
年,卷(期)：2024.35(8)