NDLI: Oral Topic ( choose from website ) : Nanomaterials and their Composites for Chemical Sensors Hydrogen gas detection of gold nanoparticles on self-activated graphene layers

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Oral Topic ( choose from website ) : Nanomaterials and their Composites for Chemical Sensors Hydrogen gas detection of gold nanoparticles on self-activated graphene layers

Content Provider	Semantic Scholar
Author	Kim, Yeonhoo Choi, Yong Seok Park, Seo Yun Kim, Taehoon Seung-Pyo Moon Hee, Byung Lee, Jong-Heun Lee, Donghwa Jang, Ho Won
Copyright Year	2018
Abstract	Graphene is a leading candidate for next-generation gas sensing applications because of various advantages such as high sensitivity at room temperature, transparency, and flexibility. However, poor selectivity, and sluggish sensing behavior at room temperature are major drawbacks for practical use of graphene-based materials. To overcome the disadvantages, many kinds of noble metals are decorated on graphene surfaces. Here, we present room temperature hydrogen detection of Au nanoparticles deposited on self-activated graphene. The Au decorated graphene sensors with selfactivation exhibit enhanced gas sensing properties such as rapid response, full recovery, and high selectivity. We discovered improvement in H2 detection which has never been reported for Au decoration on any materials. The hydrogen sensing mechanism of Au nanoparticles on self-activated graphene is investigated by density-functional theory calculations. This discovery of a new functionality in the existing material broadens the possibility of metal nanoparticle/graphene heterostructures for diverse research areas.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://www.ama-science.org/proceedings/download/ZmR3BD==
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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