In situ growth of porphyrinic metal–organic framework nanocrystals on graphene nanoribbons for the electrocatalytic oxidation of nitrite. Issue 27 (24th June 2016)

• Record Type: Journal Article
• Authors: Kung, Chung-Wei; Li, Yan-Sheng; Lee, Min-Han; Wang, Shan-Yu; Chiang, Wei-Hung; Ho, Kuo-Chuan
• Is Part Of: Journal of materials chemistry. Volume 4:Issue 27(2016)
• Page Start: 10673
• Page End: 10682
• Publication Date: 2016-06-24
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c6ta02563c
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : A nanocomposite ofMOF-525 nanocrystals interconnected by numerous one-dimensional graphene nanoribbons serves as a promising electrocatalyst for nitrite oxidation. Abstract : Graphene nanoribbons (GNRs) are incorporated with the nanocrystals of a porphyrinic metal–organic framework, MOF-525, by solvothermally growingMOF-525 in a suspension of well-dispersed GNRs. A nanocomposite, which is composed of theMOF-525 nanocrystals interconnected by numerous one-dimensional GNRs, is successfully synthesized. Due to the excellent dispersity, uniform thin films of theMOF-525 /GNR nanocomposite can be simply deposited on conducting glass substrates by using drop casting. The obtained thin film of theMOF-525 /GNR nanocomposite is applied for electrochemical nitrite sensors. TheMOF-525 nanocrystals serve as a high-surface-area electrocatalyst toward nitrite and the interconnected GNRs act as conductive bridges to provide facile charge transport. The thin film of theMOF-525 /GNR nanocomposite thus exhibits a much better electrocatalytic activity for the oxidation of nitrite compared to the pristineMOF-525 thin film.