• Share
  • Email
  • Embed
  • Like
  • Save
  • Private Content
Galvanic exchange on Reduced Graphene Oxide
 

Galvanic exchange on Reduced Graphene Oxide

on

  • 901 views

 

Statistics

Views

Total Views
901
Views on SlideShare
899
Embed Views
2

Actions

Likes
1
Downloads
9
Comments
0

1 Embed 2

http://www.linkedin.com 2

Accessibility

Categories

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

    Galvanic exchange on Reduced Graphene Oxide Galvanic exchange on Reduced Graphene Oxide Presentation Transcript

    • dx.doi.org/10.1021/jp309529b | J. Phys. Chem. C 2013, 117, 571−577
    • 2 nm•Theoretical surfacearea of 2600 m2g-1•Electron mobility of2 x105 cm2V-1s-1•Nanoelectronics•Energy storage andconversion•Drug delivery•Sensing•Catalysis2010, 22, 4467–4472.
    • A Multifunctional Catalyst Assembly?Photocatalyticsplitting of water- Selectivity-Improved chargeseparation• Detect andDestroy Of organicpollutants
    • m M1(s) + n M2m+(aq)  m M1n+(aq) + n M2(s)E0 (M1n+ /M1) pair must be lower than E0 (M2m+ /M2).e.g. 3Ag(s) + Au3+(aq)  3Ag+(aq) + Au(s)J. Am. Chem. Soc. 2007, 129, 1733-1742.Nano Lett. 2002, 2, 481-485.Galvanic Exchange- Using Silver Templates forMetal Nanostructures
    • RGO Mediated Galvanic ExchangeRGO(e-) + Ag+  RGO + AgAg(s) + AuCl4-(sol)  Au(s) + Ag+(sol) + 4Cl -(sol)AuCl4-Ag+ehʋTiO2heETOHEtO•TiO2 + hn  TiO2 (e + h)TiO2 (e + h) + EtOH  TiO2 (e) + EtO•TiO2 (e) + GO  TiO2 + RGO(e)AgAu
    • TEM Characterization(1-210)(0-110)
    • Methyl Viologen Photocatalysis
    • Conclusions• Galvanic exchange between Ag nanoparticles and Au3+ ionscan be carried out on RGO sheet in a controlled way.• RGO is capable of anchoring both semiconductor and metalnanoparticles.• Photocatalysis experiments of MV2+ reduction showmediation of metal nanoparticles and RGO in electron transfer.
    • Full paper @ J.Phys. Chem. C, 2013, 117, 571−577.doi:10.1021/jp309529b