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Nanomaterials 2018, 8(5), 282; https://doi.org/10.3390/nano8050282

Novel Gold Dendritic Nanoforests Combined with Titanium Nitride for Visible-Light-Enhanced Chemical Degradation

1
Instrument Technology Research Center, National Applied Research Laboratories, Hsinchu 300, Taiwan
2
Department of Chemical Engineering, National United University, Miaoli 360, Taiwan
*
Author to whom correspondence should be addressed.
Received: 14 February 2018 / Revised: 23 April 2018 / Accepted: 24 April 2018 / Published: 26 April 2018
(This article belongs to the Special Issue Nanoporous Gold and Other Related Materials)
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Abstract

In this study, gold dendritic nanoforests (Au DNFs)-titanium nitride (TiN) composite was firstly proposed for visible-light photodegradation of pollutants. A high-power impulse magnetron sputtering system was used to coat TiN films on silicon wafers, and a fluoride-assisted galvanic replacement reaction was applied to deposit Au DNFs on TiN/Si substrates. Scanning electron microscope images and X-ray diffraction patterns of TiN/Si, Au DNFs/Si, and Au DNFs/TiN/Si samples verified that this synthesis process was accurately controlled. The average reflectance of Au DNFs/Si and Au DNFs/TiN/Si considerably declined to approximately 10%, because the broadband localized surface plasmon resonances of Au DNFs cause broadband absorbance and low reflectance. In photocatalytic performance, 90.66 ± 1.41% 4-nitrophenol was successfully degraded in 180 min by Au DNFs/TiN/Si under visible-light irradiation. Therefore, Au DNFs/TiN/Si has the chance to be a visible-light photocatalyst for photodegradation of pollutants. View Full-Text
Keywords: photocatalyst; degradation; gold; titanium nitride photocatalyst; degradation; gold; titanium nitride
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Shiao, M.-H.; Lin, C.-T.; Zeng, J.-J.; Lin, Y.-S. Novel Gold Dendritic Nanoforests Combined with Titanium Nitride for Visible-Light-Enhanced Chemical Degradation. Nanomaterials 2018, 8, 282.

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