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Nanomaterials
Volume 10
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10.3390/nano10101985
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Open AccessArticle

Photocatalytic Properties of Graphene/Gold and Graphene Oxide/Gold Nanocomposites Synthesized by Pulsed Laser Induced Photolysis

by
Li-Hsiou Chen
1,
Huan-Ting Shen
1,
Wen-Hsin Chang
2,
Ibrahim Khalil
3,4,
Su-Yu Liao
5,
Wageeh A. Yehye
4,
Shih-Chuan Liu
6,
Chih-Chien Chu
2,7,* and
Vincent K. S. Hsiao
3,*
1
Department of Pulmonary Medicine, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung 427, Taiwan
2
Department of Medical Applied Chemistry, Chung Shan Medical University, Taichung 40201, Taiwan
3
Department of Applied Materials and Optoelectronic Engineering, National Chi Nan University, Nantou 54561, Taiwan
4
Nanotechnology & Catalysis Research Centre (NANOCAT), Institute for Advanced Studies, University of Malaya, Kuala Lumpur 50603, Malaysia
5
Department of Electrical Engineering, National Chi Nan University, Nantou 54561, Taiwan
6
Department of Health Diet and Industry Management, Chung Shan Medical University, Taichung 40201, Taiwan
7
Department of Medical Education, Chung Shan Medical University Hospital, Taichung 40201, Taiwan
*
Authors to whom correspondence should be addressed.
Nanomaterials 2020, 10(10), 1985; https://doi.org/10.3390/nano10101985
Received: 7 September 2020 / Revised: 30 September 2020 / Accepted: 3 October 2020 / Published: 7 October 2020
(This article belongs to the Special Issue Laser Synthesis of Nanomaterials)
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Abstract

Graphene (Gr)/gold (Au) and graphene-oxide (GO)/Au nanocomposites (NCPs) were synthesized by performing pulsed-laser-induced photolysis (PLIP) on hydrogen peroxide and chloroauric acid (HAuCl4) that coexisted with Gr or GO in an aqueous solution. A 3-month-long aqueous solution stability was observed in the NCPs synthesized without using surfactants and additional processing. The synthesized NCPs were characterized using absorption spectroscopy, transmission electron microscopy, Raman spectroscopy, energy dispersive spectroscopy, and X-ray diffraction to prove the existence of hybrid Gr/Au or GO/Au NCPs. The synthesized NCPs were further evaluated using the photocatalytic reaction of methylene blue (MB), a synthetic dye, under UV radiation, visible light (central wavelength of 470 nm), and full spectrum of solar light. Both Gr/Au and GO/Au NCPs exhibited photocatalytic degradation of MB under solar light illumination with removal efficiencies of 92.1% and 94.5%, respectively. View Full-Text
Keywords: graphene; graphene oxide; gold; nanocomposite; photolysis; photocatalysis graphene; graphene oxide; gold; nanocomposite; photolysis; photocatalysis
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

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MDPI and ACS Style

Chen, L.-H.; Shen, H.-T.; Chang, W.-H.; Khalil, I.; Liao, S.-Y.; A. Yehye, W.; Liu, S.-C.; Chu, C.-C.; Hsiao, V.K.S. Photocatalytic Properties of Graphene/Gold and Graphene Oxide/Gold Nanocomposites Synthesized by Pulsed Laser Induced Photolysis. Nanomaterials 2020, 10, 1985. https://doi.org/10.3390/nano10101985

AMA Style

Chen L-H, Shen H-T, Chang W-H, Khalil I, Liao S-Y, A. Yehye W, Liu S-C, Chu C-C, Hsiao VKS. Photocatalytic Properties of Graphene/Gold and Graphene Oxide/Gold Nanocomposites Synthesized by Pulsed Laser Induced Photolysis. Nanomaterials. 2020; 10(10):1985. https://doi.org/10.3390/nano10101985

Chicago/Turabian Style

Chen, Li-Hsiou; Shen, Huan-Ting; Chang, Wen-Hsin; Khalil, Ibrahim; Liao, Su-Yu; A. Yehye, Wageeh; Liu, Shih-Chuan; Chu, Chih-Chien; Hsiao, Vincent K.S. 2020. "Photocatalytic Properties of Graphene/Gold and Graphene Oxide/Gold Nanocomposites Synthesized by Pulsed Laser Induced Photolysis" Nanomaterials 10, no. 10: 1985. https://doi.org/10.3390/nano10101985

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