0D/2D AgInS                         2                         /MXene Z-scheme heterojunction nanosheets for improved ammonia photosynthesis of N                         2

Jiangzhou Qin; Xia Hu; Xinyong Li; Zhifan Yin; Baojun Liu; Kwok ho Lam

doi:10.1016/j.nanoen.2019.04.028

0D/2D AgInS ₂ /MXene Z-scheme heterojunction nanosheets for improved ammonia photosynthesis of N ₂

Jiangzhou Qin, Xia Hu, Xinyong Li, Zhifan Yin, Baojun Liu, Kwok ho Lam

The Hong Kong Polytechnic University

Research output: Journal article publication › Journal article › Academic research › peer-review

186 Citations (Scopus)

Abstract

In order to explore efficient photocatalysts for N ₂ reduction reaction (NRR), 0D AgInS ₂ nanoparticles and 2D MXene (Ti ₃ C ₂ ) nanosheets with different mass ratios are employed for building Z-scheme heterostructures. The resultant hybrids exhibit excellent interfacial charge transfer ability according to their optical and photo-electro properties. As a result, the obtained composite (30 wt% AgInS ₂ ) shows significant improvement on the photocatalytic performance for N ₂ fixation with a high ammonia yield rate of 38.8 μmol/(g∙h) under visible-light illumination (>400 nm). Meanwhile, the DFT calculations show that the activation of N ₂ in a dinuclear end-on bound structure could lead to high adsorption energy (E _ad = −5.20 eV). Moreover, the mechanism of enhanced photocatalytic activity was proposed in terms of the quantum calculation between Ti ₃ C ₂ and N ₂ . This work provides new systems for enhanced NRR performance.

Original language	English
Pages (from-to)	27-35
Number of pages	9
Journal	Nano Energy
Volume	61
DOIs	https://doi.org/10.1016/j.nanoen.2019.04.028
Publication status	Published - Jul 2019

Keywords

AgInS /MXene heterojunction
DFT calculations
N reduction
Photocatalysis

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
General Materials Science
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

More information

10.1016/j.nanoen.2019.04.028

Cite this

@article{b1d366a2920a42e382dff5d2b4b49abb,

title = "0D/2D AgInS 2 /MXene Z-scheme heterojunction nanosheets for improved ammonia photosynthesis of N 2",

abstract = " In order to explore efficient photocatalysts for N 2 reduction reaction (NRR), 0D AgInS 2 nanoparticles and 2D MXene (Ti 3 C 2 ) nanosheets with different mass ratios are employed for building Z-scheme heterostructures. The resultant hybrids exhibit excellent interfacial charge transfer ability according to their optical and photo-electro properties. As a result, the obtained composite (30 wt% AgInS 2 ) shows significant improvement on the photocatalytic performance for N 2 fixation with a high ammonia yield rate of 38.8 μmol/(g∙h) under visible-light illumination (>400 nm). Meanwhile, the DFT calculations show that the activation of N 2 in a dinuclear end-on bound structure could lead to high adsorption energy (E ad = −5.20 eV). Moreover, the mechanism of enhanced photocatalytic activity was proposed in terms of the quantum calculation between Ti 3 C 2 and N 2 . This work provides new systems for enhanced NRR performance. ",

keywords = "AgInS /MXene heterojunction, DFT calculations, N reduction, Photocatalysis",

author = "Jiangzhou Qin and Xia Hu and Xinyong Li and Zhifan Yin and Baojun Liu and Lam, {Kwok ho}",

year = "2019",

month = jul,

doi = "10.1016/j.nanoen.2019.04.028",

language = "English",

volume = "61",

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journal = "Nano Energy",

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publisher = "Elsevier B.V.",

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TY - JOUR

T1 - 0D/2D AgInS 2 /MXene Z-scheme heterojunction nanosheets for improved ammonia photosynthesis of N 2

AU - Qin, Jiangzhou

AU - Hu, Xia

AU - Li, Xinyong

AU - Yin, Zhifan

AU - Liu, Baojun

AU - Lam, Kwok ho

PY - 2019/7

Y1 - 2019/7

N2 - In order to explore efficient photocatalysts for N 2 reduction reaction (NRR), 0D AgInS 2 nanoparticles and 2D MXene (Ti 3 C 2 ) nanosheets with different mass ratios are employed for building Z-scheme heterostructures. The resultant hybrids exhibit excellent interfacial charge transfer ability according to their optical and photo-electro properties. As a result, the obtained composite (30 wt% AgInS 2 ) shows significant improvement on the photocatalytic performance for N 2 fixation with a high ammonia yield rate of 38.8 μmol/(g∙h) under visible-light illumination (>400 nm). Meanwhile, the DFT calculations show that the activation of N 2 in a dinuclear end-on bound structure could lead to high adsorption energy (E ad = −5.20 eV). Moreover, the mechanism of enhanced photocatalytic activity was proposed in terms of the quantum calculation between Ti 3 C 2 and N 2 . This work provides new systems for enhanced NRR performance.

AB - In order to explore efficient photocatalysts for N 2 reduction reaction (NRR), 0D AgInS 2 nanoparticles and 2D MXene (Ti 3 C 2 ) nanosheets with different mass ratios are employed for building Z-scheme heterostructures. The resultant hybrids exhibit excellent interfacial charge transfer ability according to their optical and photo-electro properties. As a result, the obtained composite (30 wt% AgInS 2 ) shows significant improvement on the photocatalytic performance for N 2 fixation with a high ammonia yield rate of 38.8 μmol/(g∙h) under visible-light illumination (>400 nm). Meanwhile, the DFT calculations show that the activation of N 2 in a dinuclear end-on bound structure could lead to high adsorption energy (E ad = −5.20 eV). Moreover, the mechanism of enhanced photocatalytic activity was proposed in terms of the quantum calculation between Ti 3 C 2 and N 2 . This work provides new systems for enhanced NRR performance.

KW - AgInS /MXene heterojunction

KW - DFT calculations

KW - N reduction

KW - Photocatalysis

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DO - 10.1016/j.nanoen.2019.04.028

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VL - 61

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EP - 35

JO - Nano Energy

JF - Nano Energy

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