NDLI: Formation of reusable Au-acetonitrile polymers and N-doped graphene catalyst under UV light <i>via</i> submerged liquid plasma process

Content Provider	Royal Society of Chemistry (RSC)
Author	Senthilnathan, Jaganathan Ting, Jyh-Ming Yoshimura, Masahiro Lin, Wan-Hsien Rao, Kodepelly Sanjeeva
Copyright Year	2015
Abstract	In this study, acetonitrile polymers (ANPs) synthesized using a submerged liquid plasma (SLP) process were used for the direct reduction of Au3+ under ultraviolet (UV) light without the need for reducing or templating agents. Nitrogen-functionalized graphene (NFG) and ANPs, both synthesized via the SLP process were used to form a Au–ANPs–NFG nanohybrid. The pyridinic and pyrrolic nitrogen present in the NFG effectively chemisorbs or binds with ANPs through π–π or σ–π interaction. The ANPs provide excellent control over the Au nanoparticle formation size (∼5 nm), as confirmed by high-resolution transmission electron microscopy. High-resolution X-ray photoelectron spectra revealed that the difference in the chemical shift between Au 4f 5/2 and Au 4f 7/2 peaks was 3.7 eV, which confirms that the reduced form of Au0 was present in Au–ANPs–NFG. A UV-visible absorbance spectrum further confirms the reduction of Au3+ to Au0 under 254 nm UV light. The catalytic activity of the as-synthesized Au–ANPs–NFG was used for the selective oxidation of benzyl alcohol to benzaldehyde in both suspended and immobilized forms. The Au–ANPs–NFG immobilized on Pyrex glass resulted in 69% conversion of benzyl alcohol to benzaldehyde. The reuse of immobilized Au–ANPs–NFG led to 69%, 64%, and 61% successive conversions with a reaction time of 330 min.
Starting Page	3035
Ending Page	3043
Page Count	9
File Format	HTM / HTML PDF
ISSN	20507488
Volume Number	3
Issue Number	6
Journal	Journal of Materials Chemistry A
DOI	10.1039/c4ta05586a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	SLP NFG Acetonitrile Blood plasma Ultraviolet Graphene Nitrogen Nanoparticle High-resolution transmission electron microscopy X-ray crystallography Chemical shift Electronvolt Benzyl alcohol Benzaldehyde Pyrex
Content Type	Text
Resource Type	Article
Subject	Chemistry Renewable Energy, Sustainability and the Environment Materials Science

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