In situ construction of tandem nitrogen-doped MoP nanocrystals for high-efficient electrocatalytic hydrogen evolution

Yaqi Li; Naga Pradeep Nidamanuri; Anning Jiang; Zegao Wang; Qiang Li; Mingdong Dong

doi:10.1016/j.electacta.2020.136059

In situ construction of tandem nitrogen-doped MoP nanocrystals for high-efficient electrocatalytic hydrogen evolution

Yaqi Li, Naga Pradeep Nidamanuri, Anning Jiang, Zegao Wang, Qiang Li^*, Mingdong Dong

^*Corresponding author for this work

Interdisciplinary Nanoscience Center - INANO-Fysik, iNANO-huset

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

Abstract

Rational design and controlled fabrication of novel electrochemical interfaces are intriguing approaches to improve the intrinsic electrocatalytic performance of nanocatalysts towards energy applications. Herein, we demonstrated an in situ thermal phosphorization strategy based on MoO₃-adenine (MoAD) hybrids for the construction of crystallographically interconnected nitrogen-doped molybdenum phosphide (N–MoP) nanocrystals consisting of abundant grain boundaries for high-efficient hydrogen evolution reaction (HER). In this strategy, MoAD hybrids were synthesized through a hydrothermal reaction, for which adenine was used as both the nanostructure inducer and the nitrogen source. The as-synthesized tandem N–MoP nanocrystals exhibited remarkable HER activity, with overpotentials of 125 and 175 mV at a cathodic current density of 10 mA cm⁻² and corresponding Tafel slopes of 69 mV dec⁻¹ in alkaline and acidic conditions. It was found that the HER catalytic performance could be significantly influenced by the crystallinity of MoP nanostructures. The work presented here will not only unravel the potential of adenine in nanocatalysts development but also reinforce the exploitation of the sustainable raw materials for disparate nanocatalysts.

Original language	English
Article number	136059
Journal	Electrochimica Acta
Volume	342
Number of pages	9
ISSN	0013-4686
DOIs	https://doi.org/10.1016/j.electacta.2020.136059
Publication status	Published - 2020

Keywords

Electrocatalysts
Hydrogen evolution reaction
Molybdenum phosphide
MoO-Adenine hybrid
Nitrogen doping

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10.1016/j.electacta.2020.136059

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title = "In situ construction of tandem nitrogen-doped MoP nanocrystals for high-efficient electrocatalytic hydrogen evolution",

abstract = "Rational design and controlled fabrication of novel electrochemical interfaces are intriguing approaches to improve the intrinsic electrocatalytic performance of nanocatalysts towards energy applications. Herein, we demonstrated an in situ thermal phosphorization strategy based on MoO3-adenine (MoAD) hybrids for the construction of crystallographically interconnected nitrogen-doped molybdenum phosphide (N–MoP) nanocrystals consisting of abundant grain boundaries for high-efficient hydrogen evolution reaction (HER). In this strategy, MoAD hybrids were synthesized through a hydrothermal reaction, for which adenine was used as both the nanostructure inducer and the nitrogen source. The as-synthesized tandem N–MoP nanocrystals exhibited remarkable HER activity, with overpotentials of 125 and 175 mV at a cathodic current density of 10 mA cm−2 and corresponding Tafel slopes of 69 mV dec−1 in alkaline and acidic conditions. It was found that the HER catalytic performance could be significantly influenced by the crystallinity of MoP nanostructures. The work presented here will not only unravel the potential of adenine in nanocatalysts development but also reinforce the exploitation of the sustainable raw materials for disparate nanocatalysts.",

keywords = "Electrocatalysts, Hydrogen evolution reaction, Molybdenum phosphide, MoO-Adenine hybrid, Nitrogen doping",

author = "Yaqi Li and Nidamanuri, {Naga Pradeep} and Anning Jiang and Zegao Wang and Qiang Li and Mingdong Dong",

year = "2020",

doi = "10.1016/j.electacta.2020.136059",

language = "English",

volume = "342",

journal = "Electrochimica Acta",

issn = "0013-4686",

publisher = "Pergamon Press",

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In situ construction of tandem nitrogen-doped MoP nanocrystals for high-efficient electrocatalytic hydrogen evolution. / Li, Yaqi; Nidamanuri, Naga Pradeep; Jiang, Anning et al.
In: Electrochimica Acta, Vol. 342, 136059, 2020.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

TY - JOUR

T1 - In situ construction of tandem nitrogen-doped MoP nanocrystals for high-efficient electrocatalytic hydrogen evolution

AU - Li, Yaqi

AU - Nidamanuri, Naga Pradeep

AU - Jiang, Anning

AU - Wang, Zegao

AU - Li, Qiang

AU - Dong, Mingdong

PY - 2020

Y1 - 2020

N2 - Rational design and controlled fabrication of novel electrochemical interfaces are intriguing approaches to improve the intrinsic electrocatalytic performance of nanocatalysts towards energy applications. Herein, we demonstrated an in situ thermal phosphorization strategy based on MoO3-adenine (MoAD) hybrids for the construction of crystallographically interconnected nitrogen-doped molybdenum phosphide (N–MoP) nanocrystals consisting of abundant grain boundaries for high-efficient hydrogen evolution reaction (HER). In this strategy, MoAD hybrids were synthesized through a hydrothermal reaction, for which adenine was used as both the nanostructure inducer and the nitrogen source. The as-synthesized tandem N–MoP nanocrystals exhibited remarkable HER activity, with overpotentials of 125 and 175 mV at a cathodic current density of 10 mA cm−2 and corresponding Tafel slopes of 69 mV dec−1 in alkaline and acidic conditions. It was found that the HER catalytic performance could be significantly influenced by the crystallinity of MoP nanostructures. The work presented here will not only unravel the potential of adenine in nanocatalysts development but also reinforce the exploitation of the sustainable raw materials for disparate nanocatalysts.

AB - Rational design and controlled fabrication of novel electrochemical interfaces are intriguing approaches to improve the intrinsic electrocatalytic performance of nanocatalysts towards energy applications. Herein, we demonstrated an in situ thermal phosphorization strategy based on MoO3-adenine (MoAD) hybrids for the construction of crystallographically interconnected nitrogen-doped molybdenum phosphide (N–MoP) nanocrystals consisting of abundant grain boundaries for high-efficient hydrogen evolution reaction (HER). In this strategy, MoAD hybrids were synthesized through a hydrothermal reaction, for which adenine was used as both the nanostructure inducer and the nitrogen source. The as-synthesized tandem N–MoP nanocrystals exhibited remarkable HER activity, with overpotentials of 125 and 175 mV at a cathodic current density of 10 mA cm−2 and corresponding Tafel slopes of 69 mV dec−1 in alkaline and acidic conditions. It was found that the HER catalytic performance could be significantly influenced by the crystallinity of MoP nanostructures. The work presented here will not only unravel the potential of adenine in nanocatalysts development but also reinforce the exploitation of the sustainable raw materials for disparate nanocatalysts.

KW - Electrocatalysts

KW - Hydrogen evolution reaction

KW - Molybdenum phosphide

KW - MoO-Adenine hybrid

KW - Nitrogen doping

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DO - 10.1016/j.electacta.2020.136059

M3 - Journal article

AN - SCOPUS:85082302794

SN - 0013-4686

VL - 342

JO - Electrochimica Acta

JF - Electrochimica Acta

M1 - 136059

ER -

In situ construction of tandem nitrogen-doped MoP nanocrystals for high-efficient electrocatalytic hydrogen evolution

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