ACS applied materials & interfaces, volume 7, issue 48, pages 26941-26951

Facile Synthesis of n-type (AgIn)xZn2(1–x)S2/p-type Ag2S Nanocomposite for Visible Light Photocatalytic Reduction To Detoxify Hexavalent Chromium

Publication typeJournal Article
Publication date2015-11-25
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor9.5
ISSN19448244, 19448252
General Materials Science
Abstract
n-type (AgIn)(x)Zn(2(1-x))S2/p-type Ag2S nanocomposites with 10%, 20%, and 30% Ag2S loading were successfully synthesized via the simple solvothermal and sol gel methods. The as-prepared nanocomposites were characterized, and their visible light photocatalytic reductions were tested for detoxification of hexavalent chromium (Cr(VI)). The results showed only 20 mg of the as-prepared nanocomposites could reduce 100 mL of 20 ppm potassium dichromate by almost 100% in less than 90 min without adding any hole scavenger agents and pH adjustment (pH = 7). The good photocatalytic reduction was related to the narrower bandgap of (AgIn)(x)Zn(2(1-x))S2 solid solution because of the hybridized orbitals of Ag, In, Zn, and S and low recombination rate of photogenerated electron and hole pairs due to the effectiveness of p-type Ag2S and n-type (AgIn)(x)Zn(2(1-x))S2 nanoheterojunctions. This work not only gives a contribution to the creation of visible light photocatalysis for wide-bandgap semiconductors, but also extends our technological viewpoints in designing highly efficient metal sulfide photocatalyst. To the best of our knowledge, this work is the first finding of a high photocatalytic reduction of hexavalent chromium under visible light illumination by simultaneously using both concepts of p-n nanoheterojunction and solid solution in our photocatalyst design. In this present work, these concepts were used to replace the use of hole scavenger agents, which were commonly used by many other works to retard the recombination rate of photoinduced electron and hole pairs for photodegradation of hexavalent chromium.

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Abdullah H., Kuo D. Facile Synthesis of n-type (AgIn)xZn2(1–x)S2/p-type Ag2S Nanocomposite for Visible Light Photocatalytic Reduction To Detoxify Hexavalent Chromium // ACS applied materials & interfaces. 2015. Vol. 7. No. 48. pp. 26941-26951.
GOST all authors (up to 50) Copy
Abdullah H., Kuo D. Facile Synthesis of n-type (AgIn)xZn2(1–x)S2/p-type Ag2S Nanocomposite for Visible Light Photocatalytic Reduction To Detoxify Hexavalent Chromium // ACS applied materials & interfaces. 2015. Vol. 7. No. 48. pp. 26941-26951.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1021/acsami.5b09647
UR - https://doi.org/10.1021/acsami.5b09647
TI - Facile Synthesis of n-type (AgIn)xZn2(1–x)S2/p-type Ag2S Nanocomposite for Visible Light Photocatalytic Reduction To Detoxify Hexavalent Chromium
T2 - ACS applied materials & interfaces
AU - Abdullah, Hairus
AU - Kuo, Dong-Hau
PY - 2015
DA - 2015/11/25 00:00:00
PB - American Chemical Society (ACS)
SP - 26941-26951
IS - 48
VL - 7
SN - 1944-8244
SN - 1944-8252
ER -
BibTex |
Cite this
BibTex Copy
@article{2015_Abdullah,
author = {Hairus Abdullah and Dong-Hau Kuo},
title = {Facile Synthesis of n-type (AgIn)xZn2(1–x)S2/p-type Ag2S Nanocomposite for Visible Light Photocatalytic Reduction To Detoxify Hexavalent Chromium},
journal = {ACS applied materials & interfaces},
year = {2015},
volume = {7},
publisher = {American Chemical Society (ACS)},
month = {nov},
url = {https://doi.org/10.1021/acsami.5b09647},
number = {48},
pages = {26941--26951},
doi = {10.1021/acsami.5b09647}
}
MLA
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MLA Copy
Abdullah, Hairus, and Dong-Hau Kuo. “Facile Synthesis of n-type (AgIn)xZn2(1–x)S2/p-type Ag2S Nanocomposite for Visible Light Photocatalytic Reduction To Detoxify Hexavalent Chromium.” ACS applied materials & interfaces, vol. 7, no. 48, Nov. 2015, pp. 26941-26951. https://doi.org/10.1021/acsami.5b09647.
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