Assembly of Copolymer and Metal−Organic Framework HKUST-1 to Form Cu<sub>2−x</sub>S/CNFs Intertwining Network for Efficient Electrocatalytic Hydrogen Evolution

Assembly of Copolymer and Metal−Organic Framework HKUST-1 to Form Cu<sub>2−x</sub>S/CNFs Intertwining Network for Efficient Electrocatalytic Hydrogen Evolution

The construction of complex intertwined networks that provide fast transport pathways for ions/electrons is very important for electrochemical systems such as water splitting, but a challenge. Herein, a three dimensional (3-D) intertwined network of Cu<sub>2−x</sub>S/CNFs (x = 0 or 0.04)...

Full description

Bibliographic Details
Main Authors: Yuanjuan Bai, Yanran Li, Gonggang Liu, Jinbo Hu
Format: Article
Language:English
Published: MDPI AG 2021-06-01
Series:Nanomaterials
Subjects:
assembly
metal-organic frameworks
hydrogen evolution reaction
Cu<sub>2−x</sub>S
Online Access:https://www.mdpi.com/2079-4991/11/6/1505
id doaj-5d5c6e602a72417d89edf00e594d0dca
record_format Article
spelling doaj-5d5c6e602a72417d89edf00e594d0dca2021-06-30T23:30:23ZengMDPI AGNanomaterials2079-49912021-06-01111505150510.3390/nano11061505Assembly of Copolymer and Metal−Organic Framework HKUST-1 to Form Cu<sub>2−x</sub>S/CNFs Intertwining Network for Efficient Electrocatalytic Hydrogen EvolutionYuanjuan Bai0Yanran Li1Gonggang Liu2Jinbo Hu3Hunan Province Key Laboratory of Materials Surface & Interface Science and Technology, College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, ChinaState Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, ChinaHunan Province Key Laboratory of Materials Surface & Interface Science and Technology, College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, ChinaHunan Province Key Laboratory of Materials Surface & Interface Science and Technology, College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, ChinaThe construction of complex intertwined networks that provide fast transport pathways for ions/electrons is very important for electrochemical systems such as water splitting, but a challenge. Herein, a three dimensional (3-D) intertwined network of Cu<sub>2−x</sub>S/CNFs (x = 0 or 0.04) has been synthesized through the morphology-preserved thermal transformation of the intertwined PEG-<i>b</i>-P4VP/ HKUST-1 hybrid networks. The strong interaction between PEG chains and Cu<sup>2+</sup> is the key to the successful assembly of PEG-<i>b</i>-P4VP nanofibers and HKUST-1, which inhibits the HKUST-1 to form individual crystalline particles. The obtained Cu<sub>2−x</sub>S/CNFs composites possess several merits, such as highly exposed active sites, high-speed electronic transmission pathways, open pore structure, etc. Therefore, the 3-D intertwined hierarchical network of Cu<sub>2−x</sub>S/CNFs displays an excellent electrocatalytic activity for HER, with a low overpotential (η) of 276 mV to reach current densities of 10 mA cm<sup>−2</sup>, and a smaller Tafel slope of 59 mV dec<sup>−1</sup> in alkaline solution.https://www.mdpi.com/2079-4991/11/6/1505assemblymetal-organic frameworkshydrogen evolution reactionCu<sub>2−x</sub>S
collection DOAJ
language English
format Article
sources DOAJ
author Yuanjuan Bai
Yanran Li
Gonggang Liu
Jinbo Hu
spellingShingle Yuanjuan Bai
Yanran Li
Gonggang Liu
Jinbo Hu
Assembly of Copolymer and Metal−Organic Framework HKUST-1 to Form Cu<sub>2−x</sub>S/CNFs Intertwining Network for Efficient Electrocatalytic Hydrogen Evolution
Nanomaterials
assembly
metal-organic frameworks
hydrogen evolution reaction
Cu<sub>2−x</sub>S
author_facet Yuanjuan Bai
Yanran Li
Gonggang Liu
Jinbo Hu
author_sort Yuanjuan Bai
title Assembly of Copolymer and Metal−Organic Framework HKUST-1 to Form Cu<sub>2−x</sub>S/CNFs Intertwining Network for Efficient Electrocatalytic Hydrogen Evolution
title_short Assembly of Copolymer and Metal−Organic Framework HKUST-1 to Form Cu<sub>2−x</sub>S/CNFs Intertwining Network for Efficient Electrocatalytic Hydrogen Evolution
title_full Assembly of Copolymer and Metal−Organic Framework HKUST-1 to Form Cu<sub>2−x</sub>S/CNFs Intertwining Network for Efficient Electrocatalytic Hydrogen Evolution
title_fullStr Assembly of Copolymer and Metal−Organic Framework HKUST-1 to Form Cu<sub>2−x</sub>S/CNFs Intertwining Network for Efficient Electrocatalytic Hydrogen Evolution
title_full_unstemmed Assembly of Copolymer and Metal−Organic Framework HKUST-1 to Form Cu<sub>2−x</sub>S/CNFs Intertwining Network for Efficient Electrocatalytic Hydrogen Evolution
title_sort assembly of copolymer and metal−organic framework hkust-1 to form cu<sub>2−x</sub>s/cnfs intertwining network for efficient electrocatalytic hydrogen evolution
publisher MDPI AG
series Nanomaterials
issn 2079-4991
publishDate 2021-06-01
description The construction of complex intertwined networks that provide fast transport pathways for ions/electrons is very important for electrochemical systems such as water splitting, but a challenge. Herein, a three dimensional (3-D) intertwined network of Cu<sub>2−x</sub>S/CNFs (x = 0 or 0.04) has been synthesized through the morphology-preserved thermal transformation of the intertwined PEG-<i>b</i>-P4VP/ HKUST-1 hybrid networks. The strong interaction between PEG chains and Cu<sup>2+</sup> is the key to the successful assembly of PEG-<i>b</i>-P4VP nanofibers and HKUST-1, which inhibits the HKUST-1 to form individual crystalline particles. The obtained Cu<sub>2−x</sub>S/CNFs composites possess several merits, such as highly exposed active sites, high-speed electronic transmission pathways, open pore structure, etc. Therefore, the 3-D intertwined hierarchical network of Cu<sub>2−x</sub>S/CNFs displays an excellent electrocatalytic activity for HER, with a low overpotential (η) of 276 mV to reach current densities of 10 mA cm<sup>−2</sup>, and a smaller Tafel slope of 59 mV dec<sup>−1</sup> in alkaline solution.
topic assembly
metal-organic frameworks
hydrogen evolution reaction
Cu<sub>2−x</sub>S
url https://www.mdpi.com/2079-4991/11/6/1505
work_keys_str_mv AT yuanjuanbai assemblyofcopolymerandmetalorganicframeworkhkust1toformcusub2xsubscnfsintertwiningnetworkforefficientelectrocatalytichydrogenevolution
AT yanranli assemblyofcopolymerandmetalorganicframeworkhkust1toformcusub2xsubscnfsintertwiningnetworkforefficientelectrocatalytichydrogenevolution
AT gonggangliu assemblyofcopolymerandmetalorganicframeworkhkust1toformcusub2xsubscnfsintertwiningnetworkforefficientelectrocatalytichydrogenevolution
AT jinbohu assemblyofcopolymerandmetalorganicframeworkhkust1toformcusub2xsubscnfsintertwiningnetworkforefficientelectrocatalytichydrogenevolution
_version_ 1721351105498054656

Similar Items