CdSe Quantum Dots Doped WS                         2                          Nanoflowers for Enhanced Solar Hydrogen Production

Mahider Tekalgne; Amirhossein Hasani; Quyet Van Le; Thang Phan Nguyen; Kyoung Soon Choi; Tae Hyung Lee; Ho Won Jang; Zhengtang Luo; Soo Young Kim

doi:10.1002/pssa.201800853

CdSe Quantum Dots Doped WS ₂ Nanoflowers for Enhanced Solar Hydrogen Production

Mahider Tekalgne
, Amirhossein Hasani
, Quyet Van Le
, Thang Phan Nguyen
, Kyoung Soon Choi
, Tae Hyung Lee
, Ho Won Jang
, Zhengtang Luo^*
, Soo Young Kim

^*Corresponding author for this work

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

19 Citations (Scopus)

Abstract

In this paper, a facile method for synthesizing WS ₂ nanoflowers (NFs) and CdSe quantum dots (QDs) using hydrothermal and hot injection methods, are reported, respectively. Additionally, the photocatalytic activity of a CdSe QDs/WS ₂ NF nanocomposite is analyzed in a typical three-electrode electrochemical cell. It is found that the CdSe QDs/WS ₂ NF hybrid exhibits a current density of −1.12 mA at 0 V and a Tafel slope of 82 mV dec ⁻¹ , which are superior to the values of bare WS ₂ NFs (current density of −0.25 mA and Tafel slope of 150 mV dec ⁻¹ ). This improvement of photocatalytic performance is attributed to the wide range of light absorption for e ⁻ /h ⁺ generation provided by the CdSe QDs, as well as the large surface area and numerous active sites for hydrogen production provided by WS ₂ NFs. Therefore, the CdSe QDs/WS ₂ NF hybrid structure is a promising candidate for highly effective and stable photocatalytic performance under solar light illumination for hydrogen production.

Original language	English
Article number	1800853
Journal	Physica Status Solidi (A) Applications and Materials Science
Volume	216
Issue number	9
DOIs	https://doi.org/10.1002/pssa.201800853
Publication status	Published - 2019 May 8
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

hydrogen evolution reactions
nanoflowers
WS

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Electrical and Electronic Engineering
Materials Chemistry

Access to Document

10.1002/pssa.201800853

Cite this

Tekalgne, M., Hasani, A., Le, Q. V., Nguyen, T. P., Choi, K. S., Lee, T. H., Jang, H. W., Luo, Z., & Kim, S. Y. (2019). CdSe Quantum Dots Doped WS ₂ Nanoflowers for Enhanced Solar Hydrogen Production Physica Status Solidi (A) Applications and Materials Science, 216(9), Article 1800853. https://doi.org/10.1002/pssa.201800853

CdSe Quantum Dots Doped WS ₂ Nanoflowers for Enhanced Solar Hydrogen Production . / Tekalgne, Mahider; Hasani, Amirhossein; Le, Quyet Van et al.
In: Physica Status Solidi (A) Applications and Materials Science, Vol. 216, No. 9, 1800853, 08.05.2019.

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

Tekalgne, M, Hasani, A, Le, QV, Nguyen, TP, Choi, KS, Lee, TH, Jang, HW, Luo, Z & Kim, SY 2019, ' CdSe Quantum Dots Doped WS ₂ Nanoflowers for Enhanced Solar Hydrogen Production ', Physica Status Solidi (A) Applications and Materials Science, vol. 216, no. 9, 1800853. https://doi.org/10.1002/pssa.201800853

@article{e17512efbc7e4a1cb395e435a732d5e1,

title = " CdSe Quantum Dots Doped WS 2 Nanoflowers for Enhanced Solar Hydrogen Production ",

abstract = " In this paper, a facile method for synthesizing WS 2 nanoflowers (NFs) and CdSe quantum dots (QDs) using hydrothermal and hot injection methods, are reported, respectively. Additionally, the photocatalytic activity of a CdSe QDs/WS 2 NF nanocomposite is analyzed in a typical three-electrode electrochemical cell. It is found that the CdSe QDs/WS 2 NF hybrid exhibits a current density of −1.12 mA at 0 V and a Tafel slope of 82 mV dec −1 , which are superior to the values of bare WS 2 NFs (current density of −0.25 mA and Tafel slope of 150 mV dec −1 ). This improvement of photocatalytic performance is attributed to the wide range of light absorption for e − /h + generation provided by the CdSe QDs, as well as the large surface area and numerous active sites for hydrogen production provided by WS 2 NFs. Therefore, the CdSe QDs/WS 2 NF hybrid structure is a promising candidate for highly effective and stable photocatalytic performance under solar light illumination for hydrogen production.",

keywords = "hydrogen evolution reactions, nanoflowers, WS",

author = "Mahider Tekalgne and Amirhossein Hasani and Le, \{Quyet Van\} and Nguyen, \{Thang Phan\} and Choi, \{Kyoung Soon\} and Lee, \{Tae Hyung\} and Jang, \{Ho Won\} and Zhengtang Luo and Kim, \{Soo Young\}",

note = "Publisher Copyright: {\textcopyright} 2019 WILEY-VCH Verlag GmbH \& Co. KGaA, Weinheim",

year = "2019",

month = may,

day = "8",

doi = "10.1002/pssa.201800853",

language = "English",

volume = "216",

journal = "Physica Status Solidi (A) Applications and Materials Science",

issn = "1862-6300",

publisher = "Wiley-VCH Verlag",

number = "9",

}

TY - JOUR

T1 - CdSe Quantum Dots Doped WS 2 Nanoflowers for Enhanced Solar Hydrogen Production

AU - Tekalgne, Mahider

AU - Hasani, Amirhossein

AU - Le, Quyet Van

AU - Nguyen, Thang Phan

AU - Choi, Kyoung Soon

AU - Lee, Tae Hyung

AU - Jang, Ho Won

AU - Luo, Zhengtang

AU - Kim, Soo Young

PY - 2019/5/8

Y1 - 2019/5/8

N2 - In this paper, a facile method for synthesizing WS 2 nanoflowers (NFs) and CdSe quantum dots (QDs) using hydrothermal and hot injection methods, are reported, respectively. Additionally, the photocatalytic activity of a CdSe QDs/WS 2 NF nanocomposite is analyzed in a typical three-electrode electrochemical cell. It is found that the CdSe QDs/WS 2 NF hybrid exhibits a current density of −1.12 mA at 0 V and a Tafel slope of 82 mV dec −1 , which are superior to the values of bare WS 2 NFs (current density of −0.25 mA and Tafel slope of 150 mV dec −1 ). This improvement of photocatalytic performance is attributed to the wide range of light absorption for e − /h + generation provided by the CdSe QDs, as well as the large surface area and numerous active sites for hydrogen production provided by WS 2 NFs. Therefore, the CdSe QDs/WS 2 NF hybrid structure is a promising candidate for highly effective and stable photocatalytic performance under solar light illumination for hydrogen production.

AB - In this paper, a facile method for synthesizing WS 2 nanoflowers (NFs) and CdSe quantum dots (QDs) using hydrothermal and hot injection methods, are reported, respectively. Additionally, the photocatalytic activity of a CdSe QDs/WS 2 NF nanocomposite is analyzed in a typical three-electrode electrochemical cell. It is found that the CdSe QDs/WS 2 NF hybrid exhibits a current density of −1.12 mA at 0 V and a Tafel slope of 82 mV dec −1 , which are superior to the values of bare WS 2 NFs (current density of −0.25 mA and Tafel slope of 150 mV dec −1 ). This improvement of photocatalytic performance is attributed to the wide range of light absorption for e − /h + generation provided by the CdSe QDs, as well as the large surface area and numerous active sites for hydrogen production provided by WS 2 NFs. Therefore, the CdSe QDs/WS 2 NF hybrid structure is a promising candidate for highly effective and stable photocatalytic performance under solar light illumination for hydrogen production.

KW - hydrogen evolution reactions

KW - nanoflowers

KW - WS

UR - https://www.scopus.com/pages/publications/85063529558

U2 - 10.1002/pssa.201800853

DO - 10.1002/pssa.201800853

M3 - Article

AN - SCOPUS:85063529558

SN - 1862-6300

VL - 216

JO - Physica Status Solidi (A) Applications and Materials Science

JF - Physica Status Solidi (A) Applications and Materials Science

IS - 9

M1 - 1800853

ER -