Generalized preparation of Au NP @ Ni(OH)2 yolk-shell NPs and their enhanced catalytic activity

Ren Cai; Haiyan Jin; Dan Yang; Keng Te Lin; Kitying Chan; Jianke Sun; Zhuo Chen; Xiaobing Zhang; Weihong Tan

doi:10.1016/j.nanoen.2020.104542

Generalized preparation of Au NP @ Ni(OH)₂ yolk-shell NPs and their enhanced catalytic activity

Ren Cai
, Haiyan Jin
, Dan Yang
, Keng Te Lin
, Kitying Chan
, Jianke Sun
, Zhuo Chen
, Xiaobing Zhang
, Weihong Tan

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

39 Citations (Scopus)

Abstract

Yolk-shell nanostructures have attracted considerable attention because of their unique properties and promising applications. Yet, synthesis of well-defined yolk-shell structures with controllable composition remains a major challenge. Here, we report a general method to fabricate Au NP @ Ni(OH)₂ yolk-shell NPs. Au cores with various diameters and shapes can be successfully encapsulated into the Ni(OH)₂ shells by a similar approach. When the diameter of the core Au NPs changed from ~15 to ~90 nm, the size of the yolk-shell NPs accordingly grew from ~110 to ~380 nm, however, the shell thickness of the final yolk-shell NPs is in the narrow range of 18–20 nm. The synergistic contribution from both Au and Ni(OH)₂ has endowed the yolk-shell heterostructure with enhanced catalytic activity. As shown in the oxygen-evolution reactions (OER) tests, the OER activity of Au NP @ Ni(OH)₂ yolk-shell NPs is 8.7 and 86-fold higher than that of hollow Ni(OH)₂ NPs alone and Au NP @C (5%) (Au NPs (5%) mixed with Carbon Black), respectively. In general, our method provides a simple and novel strategy towards the fabrication of yolk-shell structures with superior catalytic activity for OER.

Original language	English
Article number	104542
Journal	Nano Energy
Volume	71
DOIs	https://doi.org/10.1016/j.nanoen.2020.104542
Publication status	Published - May 2020
Externally published	Yes

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Au NPs
General approach
Hollow
Oxygen evolution
Yolk-shelled structure

ASJC Scopus subject areas

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

More information

10.1016/j.nanoen.2020.104542

Cite this

@article{dc909390ede947af9fdfd6e4b55e0d37,

title = "Generalized preparation of Au NP @ Ni(OH)2 yolk-shell NPs and their enhanced catalytic activity",

abstract = "Yolk-shell nanostructures have attracted considerable attention because of their unique properties and promising applications. Yet, synthesis of well-defined yolk-shell structures with controllable composition remains a major challenge. Here, we report a general method to fabricate Au NP @ Ni(OH)2 yolk-shell NPs. Au cores with various diameters and shapes can be successfully encapsulated into the Ni(OH)2 shells by a similar approach. When the diameter of the core Au NPs changed from \textasciitilde{}15 to \textasciitilde{}90 nm, the size of the yolk-shell NPs accordingly grew from \textasciitilde{}110 to \textasciitilde{}380 nm, however, the shell thickness of the final yolk-shell NPs is in the narrow range of 18–20 nm. The synergistic contribution from both Au and Ni(OH)2 has endowed the yolk-shell heterostructure with enhanced catalytic activity. As shown in the oxygen-evolution reactions (OER) tests, the OER activity of Au NP @ Ni(OH)2 yolk-shell NPs is 8.7 and 86-fold higher than that of hollow Ni(OH)2 NPs alone and Au NP @C (5\%) (Au NPs (5\%) mixed with Carbon Black), respectively. In general, our method provides a simple and novel strategy towards the fabrication of yolk-shell structures with superior catalytic activity for OER.",

keywords = "Au NPs, General approach, Hollow, Oxygen evolution, Yolk-shelled structure",

author = "Ren Cai and Haiyan Jin and Dan Yang and Lin, \{Keng Te\} and Kitying Chan and Jianke Sun and Zhuo Chen and Xiaobing Zhang and Weihong Tan",

note = "Funding Information: The authors are grateful to Dr. Kathryn Williams for her critical comments during the preparation of this manuscript. The authors appreciate Dr. Jong Hoon Lee (Central Research Facilities, Ulsan National Institute of Science and Engineering (UNIST), South Korea) for the HR-TEM measurements. The authors appreciate Dr. Liang Yan (Institute of High Energy Physics, Chinese Academy of Science (CAS), China) for the ion coupled plasma (ICP) experiments. The authors appreciate Dr. Shengjie Peng (Nanjing University of Aeronautics and Astronautics, China) for the discussion of OER experiments. This work is partially supported by NSFC grants (NSFC 21827811) and the Science and Technology Project of Hunan Province (2017XK2103), Hunan Provincial Key Area R\&D Program (2019SK2201). Funding Information: The authors are grateful to Dr. Kathryn Williams for her critical comments during the preparation of this manuscript. The authors appreciate Dr. Jong Hoon Lee (Central Research Facilities, Ulsan National Institute of Science and Engineering (UNIST), South Korea) for the HR-TEM measurements. The authors appreciate Dr. Liang Yan (Institute of High Energy Physics, Chinese Academy of Science (CAS), China) for the ion coupled plasma (ICP) experiments. The authors appreciate Dr. Shengjie Peng (Nanjing University of Aeronautics and Astronautics, China) for the discussion of OER experiments. This work is partially supported by NSFC grants (NSFC 21827811 ) and the Science and Technology Project of Hunan Province ( 2017XK2103 ), Hunan Provincial Key Area R\&D Program ( 2019SK2201 ). Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

year = "2020",

month = may,

doi = "10.1016/j.nanoen.2020.104542",

language = "English",

volume = "71",

journal = "Nano Energy",

issn = "2211-2855",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Generalized preparation of Au NP @ Ni(OH)2 yolk-shell NPs and their enhanced catalytic activity

AU - Cai, Ren

AU - Jin, Haiyan

AU - Yang, Dan

AU - Lin, Keng Te

AU - Chan, Kitying

AU - Sun, Jianke

AU - Chen, Zhuo

AU - Zhang, Xiaobing

AU - Tan, Weihong

N1 - Funding Information: The authors are grateful to Dr. Kathryn Williams for her critical comments during the preparation of this manuscript. The authors appreciate Dr. Jong Hoon Lee (Central Research Facilities, Ulsan National Institute of Science and Engineering (UNIST), South Korea) for the HR-TEM measurements. The authors appreciate Dr. Liang Yan (Institute of High Energy Physics, Chinese Academy of Science (CAS), China) for the ion coupled plasma (ICP) experiments. The authors appreciate Dr. Shengjie Peng (Nanjing University of Aeronautics and Astronautics, China) for the discussion of OER experiments. This work is partially supported by NSFC grants (NSFC 21827811) and the Science and Technology Project of Hunan Province (2017XK2103), Hunan Provincial Key Area R&D Program (2019SK2201). Funding Information: The authors are grateful to Dr. Kathryn Williams for her critical comments during the preparation of this manuscript. The authors appreciate Dr. Jong Hoon Lee (Central Research Facilities, Ulsan National Institute of Science and Engineering (UNIST), South Korea) for the HR-TEM measurements. The authors appreciate Dr. Liang Yan (Institute of High Energy Physics, Chinese Academy of Science (CAS), China) for the ion coupled plasma (ICP) experiments. The authors appreciate Dr. Shengjie Peng (Nanjing University of Aeronautics and Astronautics, China) for the discussion of OER experiments. This work is partially supported by NSFC grants (NSFC 21827811 ) and the Science and Technology Project of Hunan Province ( 2017XK2103 ), Hunan Provincial Key Area R&D Program ( 2019SK2201 ). Publisher Copyright: © 2020 Elsevier Ltd

PY - 2020/5

Y1 - 2020/5

N2 - Yolk-shell nanostructures have attracted considerable attention because of their unique properties and promising applications. Yet, synthesis of well-defined yolk-shell structures with controllable composition remains a major challenge. Here, we report a general method to fabricate Au NP @ Ni(OH)2 yolk-shell NPs. Au cores with various diameters and shapes can be successfully encapsulated into the Ni(OH)2 shells by a similar approach. When the diameter of the core Au NPs changed from ~15 to ~90 nm, the size of the yolk-shell NPs accordingly grew from ~110 to ~380 nm, however, the shell thickness of the final yolk-shell NPs is in the narrow range of 18–20 nm. The synergistic contribution from both Au and Ni(OH)2 has endowed the yolk-shell heterostructure with enhanced catalytic activity. As shown in the oxygen-evolution reactions (OER) tests, the OER activity of Au NP @ Ni(OH)2 yolk-shell NPs is 8.7 and 86-fold higher than that of hollow Ni(OH)2 NPs alone and Au NP @C (5%) (Au NPs (5%) mixed with Carbon Black), respectively. In general, our method provides a simple and novel strategy towards the fabrication of yolk-shell structures with superior catalytic activity for OER.

AB - Yolk-shell nanostructures have attracted considerable attention because of their unique properties and promising applications. Yet, synthesis of well-defined yolk-shell structures with controllable composition remains a major challenge. Here, we report a general method to fabricate Au NP @ Ni(OH)2 yolk-shell NPs. Au cores with various diameters and shapes can be successfully encapsulated into the Ni(OH)2 shells by a similar approach. When the diameter of the core Au NPs changed from ~15 to ~90 nm, the size of the yolk-shell NPs accordingly grew from ~110 to ~380 nm, however, the shell thickness of the final yolk-shell NPs is in the narrow range of 18–20 nm. The synergistic contribution from both Au and Ni(OH)2 has endowed the yolk-shell heterostructure with enhanced catalytic activity. As shown in the oxygen-evolution reactions (OER) tests, the OER activity of Au NP @ Ni(OH)2 yolk-shell NPs is 8.7 and 86-fold higher than that of hollow Ni(OH)2 NPs alone and Au NP @C (5%) (Au NPs (5%) mixed with Carbon Black), respectively. In general, our method provides a simple and novel strategy towards the fabrication of yolk-shell structures with superior catalytic activity for OER.

KW - Au NPs

KW - General approach

KW - Hollow

KW - Oxygen evolution

KW - Yolk-shelled structure

UR - https://www.scopus.com/pages/publications/85079320665

U2 - 10.1016/j.nanoen.2020.104542

DO - 10.1016/j.nanoen.2020.104542

M3 - Journal article

AN - SCOPUS:85079320665

SN - 2211-2855

VL - 71

JO - Nano Energy

JF - Nano Energy

M1 - 104542

ER -