Polyoxometalate-assisted formation of CoSe/MoSe                         2                          heterostructures with enhanced oxygen evolution activity

Menglei Yuan; Sobia Dipazir; Meng Wang; Yu Sun; Denglei Gao; Yiling Bai; Min Zhang; Peilong Lu; Hongyan He; Xiangyang Zhu; Shuwei Li; Zhanjun Liu; Zhaopeng Luo; Guangjin Zhang

doi:10.1039/c8ta11976g

Polyoxometalate-assisted formation of CoSe/MoSe ₂ heterostructures with enhanced oxygen evolution activity

Menglei Yuan, Sobia Dipazir, Meng Wang, Yu Sun, Denglei Gao, Yiling Bai, Min Zhang, Peilong Lu, Hongyan He, Xiangyang Zhu, Shuwei Li, Zhanjun Liu, Zhaopeng Luo, Guangjin Zhang^*

^*Corresponding author for this work

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

108 Scopus citations

Abstract

The oxygen evolution reaction (OER) is a half reaction of electrochemical water splitting that suffers from a kinetically sluggish four-electron process, and it is regarded as the efficiency-limiting step in water splitting. Herein, heterostructures of CoSe (cobalt selenide) nanoparticles and MoSe ₂ (molybdenum selenide) nanosheets (CoSe/MoSe ₂ hybrids) were fabricated through a non-metal-induced growth method. Due to the increase in the effective specific area and the electron transfer ability caused by the formation of the heterogeneous interface, the obtained CoSe/MoSe ₂ hybrids show superior OER performance (η = 262 mV at 10 mA cm ⁻² ) and long-term stability (20 h for continuous testing) as compared to pure CoSe, MoSe ₂ and physically mixed CoSe and MoSe ₂ . Schematic energy band diagrams derived from ultraviolet photoelectron spectroscopy results further confirmed the electronic modulation between CoSe and MoSe ₂ and revealed that the d-band center of CoSe/MoSe ₂ hybrids moved closer to the Fermi level, giving rise to high charge carrier density and low intermediate adsorption energy as compared to CoSe and MoSe ₂ . This work provides some insight into the design and synthesis of heterostructured nanomaterials from the MOF precursors.

Original language	English
Pages (from-to)	3317-3326
Number of pages	10
Journal	Journal of Materials Chemistry A
Volume	7
Issue number	7
DOIs	https://doi.org/10.1039/c8ta11976g
State	Published - 2019
Externally published	Yes

Bibliographical note

Publisher Copyright:
© The Royal Society of Chemistry.

ASJC Scopus subject areas

General Chemistry
Renewable Energy, Sustainability and the Environment
General Materials Science

Access to Document

10.1039/c8ta11976g

Cite this

Yuan, M., Dipazir, S., Wang, M., Sun, Y., Gao, D., Bai, Y., Zhang, M., Lu, P., He, H., Zhu, X., Li, S., Liu, Z., Luo, Z., & Zhang, G. (2019). Polyoxometalate-assisted formation of CoSe/MoSe ₂ heterostructures with enhanced oxygen evolution activity Journal of Materials Chemistry A, 7(7), 3317-3326. https://doi.org/10.1039/c8ta11976g

@article{7c62cd4bcf6041c9ad8892f780bed76b,

title = " Polyoxometalate-assisted formation of CoSe/MoSe 2 heterostructures with enhanced oxygen evolution activity ",

abstract = " The oxygen evolution reaction (OER) is a half reaction of electrochemical water splitting that suffers from a kinetically sluggish four-electron process, and it is regarded as the efficiency-limiting step in water splitting. Herein, heterostructures of CoSe (cobalt selenide) nanoparticles and MoSe 2 (molybdenum selenide) nanosheets (CoSe/MoSe 2 hybrids) were fabricated through a non-metal-induced growth method. Due to the increase in the effective specific area and the electron transfer ability caused by the formation of the heterogeneous interface, the obtained CoSe/MoSe 2 hybrids show superior OER performance (η = 262 mV at 10 mA cm −2 ) and long-term stability (20 h for continuous testing) as compared to pure CoSe, MoSe 2 and physically mixed CoSe and MoSe 2 . Schematic energy band diagrams derived from ultraviolet photoelectron spectroscopy results further confirmed the electronic modulation between CoSe and MoSe 2 and revealed that the d-band center of CoSe/MoSe 2 hybrids moved closer to the Fermi level, giving rise to high charge carrier density and low intermediate adsorption energy as compared to CoSe and MoSe 2 . This work provides some insight into the design and synthesis of heterostructured nanomaterials from the MOF precursors.",

author = "Menglei Yuan and Sobia Dipazir and Meng Wang and Yu Sun and Denglei Gao and Yiling Bai and Min Zhang and Peilong Lu and Hongyan He and Xiangyang Zhu and Shuwei Li and Zhanjun Liu and Zhaopeng Luo and Guangjin Zhang",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry.",

year = "2019",

doi = "10.1039/c8ta11976g",

language = "English",

volume = "7",

pages = "3317--3326",

journal = "Journal of Materials Chemistry A",

issn = "2050-7488",

publisher = "Royal Society of Chemistry",

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}

Yuan, M, Dipazir, S, Wang, M, Sun, Y, Gao, D, Bai, Y, Zhang, M, Lu, P, He, H, Zhu, X, Li, S, Liu, Z, Luo, Z & Zhang, G 2019, ' Polyoxometalate-assisted formation of CoSe/MoSe ₂ heterostructures with enhanced oxygen evolution activity ', Journal of Materials Chemistry A, vol. 7, no. 7, pp. 3317-3326. https://doi.org/10.1039/c8ta11976g

Polyoxometalate-assisted formation of CoSe/MoSe ₂ heterostructures with enhanced oxygen evolution activity . / Yuan, Menglei; Dipazir, Sobia; Wang, Meng et al.
In: Journal of Materials Chemistry A, Vol. 7, No. 7, 2019, p. 3317-3326.

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

TY - JOUR

T1 - Polyoxometalate-assisted formation of CoSe/MoSe 2 heterostructures with enhanced oxygen evolution activity

AU - Yuan, Menglei

AU - Dipazir, Sobia

AU - Wang, Meng

AU - Sun, Yu

AU - Gao, Denglei

AU - Bai, Yiling

AU - Zhang, Min

AU - Lu, Peilong

AU - He, Hongyan

AU - Zhu, Xiangyang

AU - Li, Shuwei

AU - Liu, Zhanjun

AU - Luo, Zhaopeng

AU - Zhang, Guangjin

PY - 2019

Y1 - 2019

N2 - The oxygen evolution reaction (OER) is a half reaction of electrochemical water splitting that suffers from a kinetically sluggish four-electron process, and it is regarded as the efficiency-limiting step in water splitting. Herein, heterostructures of CoSe (cobalt selenide) nanoparticles and MoSe 2 (molybdenum selenide) nanosheets (CoSe/MoSe 2 hybrids) were fabricated through a non-metal-induced growth method. Due to the increase in the effective specific area and the electron transfer ability caused by the formation of the heterogeneous interface, the obtained CoSe/MoSe 2 hybrids show superior OER performance (η = 262 mV at 10 mA cm −2 ) and long-term stability (20 h for continuous testing) as compared to pure CoSe, MoSe 2 and physically mixed CoSe and MoSe 2 . Schematic energy band diagrams derived from ultraviolet photoelectron spectroscopy results further confirmed the electronic modulation between CoSe and MoSe 2 and revealed that the d-band center of CoSe/MoSe 2 hybrids moved closer to the Fermi level, giving rise to high charge carrier density and low intermediate adsorption energy as compared to CoSe and MoSe 2 . This work provides some insight into the design and synthesis of heterostructured nanomaterials from the MOF precursors.

AB - The oxygen evolution reaction (OER) is a half reaction of electrochemical water splitting that suffers from a kinetically sluggish four-electron process, and it is regarded as the efficiency-limiting step in water splitting. Herein, heterostructures of CoSe (cobalt selenide) nanoparticles and MoSe 2 (molybdenum selenide) nanosheets (CoSe/MoSe 2 hybrids) were fabricated through a non-metal-induced growth method. Due to the increase in the effective specific area and the electron transfer ability caused by the formation of the heterogeneous interface, the obtained CoSe/MoSe 2 hybrids show superior OER performance (η = 262 mV at 10 mA cm −2 ) and long-term stability (20 h for continuous testing) as compared to pure CoSe, MoSe 2 and physically mixed CoSe and MoSe 2 . Schematic energy band diagrams derived from ultraviolet photoelectron spectroscopy results further confirmed the electronic modulation between CoSe and MoSe 2 and revealed that the d-band center of CoSe/MoSe 2 hybrids moved closer to the Fermi level, giving rise to high charge carrier density and low intermediate adsorption energy as compared to CoSe and MoSe 2 . This work provides some insight into the design and synthesis of heterostructured nanomaterials from the MOF precursors.

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U2 - 10.1039/c8ta11976g

DO - 10.1039/c8ta11976g

M3 - Article

AN - SCOPUS:85061540776

SN - 2050-7488

VL - 7

SP - 3317

EP - 3326

JO - Journal of Materials Chemistry A

JF - Journal of Materials Chemistry A

IS - 7

ER -