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

Instrument Technology Research Center, National Applied Research Laboratories, Hsinchu 300, Taiwan
Department of Chemical Engineering, National United University, Miaoli 360, Taiwan
Author to whom correspondence should be addressed.
Nanomaterials 2018, 8(5), 282;
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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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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