Construction of Co,N-Coordinated Carbon Dots for Efficient Oxygen Reduction Reaction

For the sake of the oxygen reduction reaction (ORR) catalytic performance, carbon dots (CDs) doped with metal atoms have accelerated their local electron flow for the past few years. However, the influence of CDs doped with metal atoms on binding sites and formation mechanisms is still uncertain. He...
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Autor*in:	Mengying Le [verfasserIn] Bingjie Hu [verfasserIn] Meiying Wu [verfasserIn] Huazhang Guo [verfasserIn] Liang Wang [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2022

Schlagwörter:	carbon dots structure regulation Co,N-doped electrocatalysis oxygen reduction reaction

Übergeordnetes Werk:	In: Molecules - MDPI AG, 2003, 27(2022), 15, p 5021
Übergeordnetes Werk:	volume:27 ; year:2022 ; number:15, p 5021

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3390/molecules27155021

Katalog-ID:	DOAJ016677919

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520			\|a For the sake of the oxygen reduction reaction (ORR) catalytic performance, carbon dots (CDs) doped with metal atoms have accelerated their local electron flow for the past few years. However, the influence of CDs doped with metal atoms on binding sites and formation mechanisms is still uncertain. Herein, Co,N-doped CDs were facilely prepared by the low-temperature polymerization–solvent extraction strategy from EDTA-Co. The influence of Co doping on the catalytic performance of Co-CDs was explored, mainly in the following aspects: first, the pyridinic N atom content of Co-CDs significantly increased from 4.2 to 11.27 at% compared with the CDs, which indicates that the Co element in the precursor is advantageous in forming more pyridinic-N-active sites for boosting the ORR performance. Second, Co-CDs are uniformly distributed on the surface of carbon black (CB) to form Co-CDsCB by the facile hydrothermal route, which can expose more active sites than the aggregation status. Third, the highest graphite N content of Co-CDs@CB was found, by limiting the current density of the catalyst towards the ORR. Composite nanomaterials formed by Co and CB are also used as air electrodes to manufacture high-performance zinc–air batteries. The battery has good cycle stability and realizes stable charges and discharges under different current densities. The outstanding catalytic activity of Co-CDs@CB is attributed to the Co,N synergistic effect induced by Co doping, which pioneer a new metal doping mechanism for gaining high-performance electrocatalysts.
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allfields	10.3390/molecules27155021 doi (DE-627)DOAJ016677919 (DE-599)DOAJ71acc600ce8a49ad855e5d7cd4904b2e DE-627 ger DE-627 rakwb eng QD241-441 Mengying Le verfasserin aut Construction of Co,N-Coordinated Carbon Dots for Efficient Oxygen Reduction Reaction 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier For the sake of the oxygen reduction reaction (ORR) catalytic performance, carbon dots (CDs) doped with metal atoms have accelerated their local electron flow for the past few years. However, the influence of CDs doped with metal atoms on binding sites and formation mechanisms is still uncertain. Herein, Co,N-doped CDs were facilely prepared by the low-temperature polymerization–solvent extraction strategy from EDTA-Co. The influence of Co doping on the catalytic performance of Co-CDs was explored, mainly in the following aspects: first, the pyridinic N atom content of Co-CDs significantly increased from 4.2 to 11.27 at% compared with the CDs, which indicates that the Co element in the precursor is advantageous in forming more pyridinic-N-active sites for boosting the ORR performance. Second, Co-CDs are uniformly distributed on the surface of carbon black (CB) to form Co-CDsCB by the facile hydrothermal route, which can expose more active sites than the aggregation status. Third, the highest graphite N content of Co-CDs@CB was found, by limiting the current density of the catalyst towards the ORR. Composite nanomaterials formed by Co and CB are also used as air electrodes to manufacture high-performance zinc–air batteries. The battery has good cycle stability and realizes stable charges and discharges under different current densities. The outstanding catalytic activity of Co-CDs@CB is attributed to the Co,N synergistic effect induced by Co doping, which pioneer a new metal doping mechanism for gaining high-performance electrocatalysts. carbon dots structure regulation Co,N-doped electrocatalysis oxygen reduction reaction Organic chemistry Bingjie Hu verfasserin aut Meiying Wu verfasserin aut Huazhang Guo verfasserin aut Liang Wang verfasserin aut In Molecules MDPI AG, 2003 27(2022), 15, p 5021 (DE-627)311313132 (DE-600)2008644-1 14203049 nnns volume:27 year:2022 number:15, p 5021 https://doi.org/10.3390/molecules27155021 kostenfrei https://doaj.org/article/71acc600ce8a49ad855e5d7cd4904b2e kostenfrei https://www.mdpi.com/1420-3049/27/15/5021 kostenfrei https://doaj.org/toc/1420-3049 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 27 2022 15, p 5021
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language	English
source	In Molecules 27(2022), 15, p 5021 volume:27 year:2022 number:15, p 5021
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authorswithroles_txt_mv	Mengying Le @@aut@@ Bingjie Hu @@aut@@ Meiying Wu @@aut@@ Huazhang Guo @@aut@@ Liang Wang @@aut@@
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callnumber-first	Q - Science
author	Mengying Le
spellingShingle	Mengying Le misc QD241-441 misc carbon dots misc structure regulation misc Co,N-doped misc electrocatalysis misc oxygen reduction reaction misc Organic chemistry Construction of Co,N-Coordinated Carbon Dots for Efficient Oxygen Reduction Reaction
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topic_title	QD241-441 Construction of Co,N-Coordinated Carbon Dots for Efficient Oxygen Reduction Reaction carbon dots structure regulation Co,N-doped electrocatalysis oxygen reduction reaction
topic	misc QD241-441 misc carbon dots misc structure regulation misc Co,N-doped misc electrocatalysis misc oxygen reduction reaction misc Organic chemistry
topic_unstemmed	misc QD241-441 misc carbon dots misc structure regulation misc Co,N-doped misc electrocatalysis misc oxygen reduction reaction misc Organic chemistry
topic_browse	misc QD241-441 misc carbon dots misc structure regulation misc Co,N-doped misc electrocatalysis misc oxygen reduction reaction misc Organic chemistry
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title	Construction of Co,N-Coordinated Carbon Dots for Efficient Oxygen Reduction Reaction
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title_full	Construction of Co,N-Coordinated Carbon Dots for Efficient Oxygen Reduction Reaction
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author_browse	Mengying Le Bingjie Hu Meiying Wu Huazhang Guo Liang Wang
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doi_str_mv	10.3390/molecules27155021
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title_sort	construction of co,n-coordinated carbon dots for efficient oxygen reduction reaction
callnumber	QD241-441
title_auth	Construction of Co,N-Coordinated Carbon Dots for Efficient Oxygen Reduction Reaction
abstract	For the sake of the oxygen reduction reaction (ORR) catalytic performance, carbon dots (CDs) doped with metal atoms have accelerated their local electron flow for the past few years. However, the influence of CDs doped with metal atoms on binding sites and formation mechanisms is still uncertain. Herein, Co,N-doped CDs were facilely prepared by the low-temperature polymerization–solvent extraction strategy from EDTA-Co. The influence of Co doping on the catalytic performance of Co-CDs was explored, mainly in the following aspects: first, the pyridinic N atom content of Co-CDs significantly increased from 4.2 to 11.27 at% compared with the CDs, which indicates that the Co element in the precursor is advantageous in forming more pyridinic-N-active sites for boosting the ORR performance. Second, Co-CDs are uniformly distributed on the surface of carbon black (CB) to form Co-CDsCB by the facile hydrothermal route, which can expose more active sites than the aggregation status. Third, the highest graphite N content of Co-CDs@CB was found, by limiting the current density of the catalyst towards the ORR. Composite nanomaterials formed by Co and CB are also used as air electrodes to manufacture high-performance zinc–air batteries. The battery has good cycle stability and realizes stable charges and discharges under different current densities. The outstanding catalytic activity of Co-CDs@CB is attributed to the Co,N synergistic effect induced by Co doping, which pioneer a new metal doping mechanism for gaining high-performance electrocatalysts.
abstractGer	For the sake of the oxygen reduction reaction (ORR) catalytic performance, carbon dots (CDs) doped with metal atoms have accelerated their local electron flow for the past few years. However, the influence of CDs doped with metal atoms on binding sites and formation mechanisms is still uncertain. Herein, Co,N-doped CDs were facilely prepared by the low-temperature polymerization–solvent extraction strategy from EDTA-Co. The influence of Co doping on the catalytic performance of Co-CDs was explored, mainly in the following aspects: first, the pyridinic N atom content of Co-CDs significantly increased from 4.2 to 11.27 at% compared with the CDs, which indicates that the Co element in the precursor is advantageous in forming more pyridinic-N-active sites for boosting the ORR performance. Second, Co-CDs are uniformly distributed on the surface of carbon black (CB) to form Co-CDsCB by the facile hydrothermal route, which can expose more active sites than the aggregation status. Third, the highest graphite N content of Co-CDs@CB was found, by limiting the current density of the catalyst towards the ORR. Composite nanomaterials formed by Co and CB are also used as air electrodes to manufacture high-performance zinc–air batteries. The battery has good cycle stability and realizes stable charges and discharges under different current densities. The outstanding catalytic activity of Co-CDs@CB is attributed to the Co,N synergistic effect induced by Co doping, which pioneer a new metal doping mechanism for gaining high-performance electrocatalysts.
abstract_unstemmed	For the sake of the oxygen reduction reaction (ORR) catalytic performance, carbon dots (CDs) doped with metal atoms have accelerated their local electron flow for the past few years. However, the influence of CDs doped with metal atoms on binding sites and formation mechanisms is still uncertain. Herein, Co,N-doped CDs were facilely prepared by the low-temperature polymerization–solvent extraction strategy from EDTA-Co. The influence of Co doping on the catalytic performance of Co-CDs was explored, mainly in the following aspects: first, the pyridinic N atom content of Co-CDs significantly increased from 4.2 to 11.27 at% compared with the CDs, which indicates that the Co element in the precursor is advantageous in forming more pyridinic-N-active sites for boosting the ORR performance. Second, Co-CDs are uniformly distributed on the surface of carbon black (CB) to form Co-CDsCB by the facile hydrothermal route, which can expose more active sites than the aggregation status. Third, the highest graphite N content of Co-CDs@CB was found, by limiting the current density of the catalyst towards the ORR. Composite nanomaterials formed by Co and CB are also used as air electrodes to manufacture high-performance zinc–air batteries. The battery has good cycle stability and realizes stable charges and discharges under different current densities. The outstanding catalytic activity of Co-CDs@CB is attributed to the Co,N synergistic effect induced by Co doping, which pioneer a new metal doping mechanism for gaining high-performance electrocatalysts.
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title_short	Construction of Co,N-Coordinated Carbon Dots for Efficient Oxygen Reduction Reaction
url	https://doi.org/10.3390/molecules27155021 https://doaj.org/article/71acc600ce8a49ad855e5d7cd4904b2e https://www.mdpi.com/1420-3049/27/15/5021 https://doaj.org/toc/1420-3049
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author2	Bingjie Hu Meiying Wu Huazhang Guo Liang Wang
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up_date	2024-07-03T22:24:21.782Z
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Construction of Co,N-Coordinated Carbon Dots for Efficient Oxygen Reduction Reaction

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