Highly Efficient Urea Oxidation via Nesting Nano-Nickel Oxide in Eggshell Membrane-Derived Carbon

Shun Lu; Matthew Hummel; Zhengrong Gu; Yucheng Wang; Keliang Wang; Rajesh Pathak; Yue Zhou; Hongxing Jia; Xueqiang Qi; Xianhui Zhao; Ben Bin Xu; Xiaoteng Liu

doi:10.1021/acssuschemeng.0c07614

Highly Efficient Urea Oxidation via Nesting Nano-Nickel Oxide in Eggshell Membrane-Derived Carbon

Shun Lu
, Matthew Hummel
, Zhengrong Gu
, Yucheng Wang
, Keliang Wang
, Rajesh Pathak
, Yue Zhou
, Hongxing Jia
, Xueqiang Qi
, Xianhui Zhao
, Ben Bin Xu
, Xiaoteng Liu

Advanced Composites Manufacturing

Research output: Contribution to journal › Article › peer-review

117 Scopus citations

Abstract

Here, we reported a strategy of using an eggshell membrane to produce hierarchically porous carbon as a low-cost substrate for synthesizing a nano-nickel oxide catalyst (C@NiO), which can effectively turn biowaste - urea - into energy through an electrochemical approach. The interwoven carbon networks within NiO led to highly efficient urea oxidation due to the strong synergistic effect. The as-prepared electrode only needed 1.36 V versus reversible hydrogen electrode to realize a high efficiency of 10 mA cm-2 in 1.0 M KOH with 0.33 M urea and delivered an even higher current density of 25 mA cm-2 at 1.46 V, which is smaller than that of the porous carbon and commercial Pt/C catalyst. Benefiting from theoretical calculations, Ni(III) active species and the porous carbon further enabled the electrocatalyst to effectively inhibit the "CO2 poisoning"of electrocatalysts, as well as ensuring its superior performance for urea oxidation.

Original language	English
Pages (from-to)	1703-1713
Number of pages	11
Journal	ACS Sustainable Chemistry and Engineering
Volume	9
Issue number	4
DOIs	https://doi.org/10.1021/acssuschemeng.0c07614
State	Published - Feb 1 2021

Funding

This work is supported by NASA EPSCoR (no. NNX16AQ98A), NSF/EPSCoR (no. OIA-1849206), the U.K. Engineering Physics and Science Research Council (Grant No. EP/S032886/1), the Foundation and Frontier Research Project of Chongqing of China (cstc2018jcyjAX0513), and the Science and Technology Research Program of Chongqing Municipal Education Commission (KJQN201801125). In addition, S.L. thanks to Yuehui Wang’s care during Shun’s Ph.D. period. This manuscript has been authored in part by UT-Battelle, LLC, under contract DE-AC05-00OR22725 of the U.S. Department of Energy (DOE). The US Government retains—and the publisher, by accepting the article for publication, acknowledges that the US government retains—a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript or allow others to do so for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ).

Keywords

density functional theory
eggshell membrane
nickel oxide
porous carbon substrate
urea oxidation

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10.1021/acssuschemeng.0c07614

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title = "Highly Efficient Urea Oxidation via Nesting Nano-Nickel Oxide in Eggshell Membrane-Derived Carbon",

abstract = "Here, we reported a strategy of using an eggshell membrane to produce hierarchically porous carbon as a low-cost substrate for synthesizing a nano-nickel oxide catalyst (C@NiO), which can effectively turn biowaste - urea - into energy through an electrochemical approach. The interwoven carbon networks within NiO led to highly efficient urea oxidation due to the strong synergistic effect. The as-prepared electrode only needed 1.36 V versus reversible hydrogen electrode to realize a high efficiency of 10 mA cm-2 in 1.0 M KOH with 0.33 M urea and delivered an even higher current density of 25 mA cm-2 at 1.46 V, which is smaller than that of the porous carbon and commercial Pt/C catalyst. Benefiting from theoretical calculations, Ni(III) active species and the porous carbon further enabled the electrocatalyst to effectively inhibit the {"}CO2 poisoning{"}of electrocatalysts, as well as ensuring its superior performance for urea oxidation.",

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AU - Lu, Shun

AU - Hummel, Matthew

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AU - Wang, Yucheng

AU - Wang, Keliang

AU - Pathak, Rajesh

AU - Zhou, Yue

AU - Jia, Hongxing

AU - Qi, Xueqiang

AU - Zhao, Xianhui

AU - Xu, Ben Bin

AU - Liu, Xiaoteng

PY - 2021/2/1

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N2 - Here, we reported a strategy of using an eggshell membrane to produce hierarchically porous carbon as a low-cost substrate for synthesizing a nano-nickel oxide catalyst (C@NiO), which can effectively turn biowaste - urea - into energy through an electrochemical approach. The interwoven carbon networks within NiO led to highly efficient urea oxidation due to the strong synergistic effect. The as-prepared electrode only needed 1.36 V versus reversible hydrogen electrode to realize a high efficiency of 10 mA cm-2 in 1.0 M KOH with 0.33 M urea and delivered an even higher current density of 25 mA cm-2 at 1.46 V, which is smaller than that of the porous carbon and commercial Pt/C catalyst. Benefiting from theoretical calculations, Ni(III) active species and the porous carbon further enabled the electrocatalyst to effectively inhibit the "CO2 poisoning"of electrocatalysts, as well as ensuring its superior performance for urea oxidation.

AB - Here, we reported a strategy of using an eggshell membrane to produce hierarchically porous carbon as a low-cost substrate for synthesizing a nano-nickel oxide catalyst (C@NiO), which can effectively turn biowaste - urea - into energy through an electrochemical approach. The interwoven carbon networks within NiO led to highly efficient urea oxidation due to the strong synergistic effect. The as-prepared electrode only needed 1.36 V versus reversible hydrogen electrode to realize a high efficiency of 10 mA cm-2 in 1.0 M KOH with 0.33 M urea and delivered an even higher current density of 25 mA cm-2 at 1.46 V, which is smaller than that of the porous carbon and commercial Pt/C catalyst. Benefiting from theoretical calculations, Ni(III) active species and the porous carbon further enabled the electrocatalyst to effectively inhibit the "CO2 poisoning"of electrocatalysts, as well as ensuring its superior performance for urea oxidation.

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Highly Efficient Urea Oxidation via Nesting Nano-Nickel Oxide in Eggshell Membrane-Derived Carbon

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