+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Free-standing mesoporous carbon thin films with highly ordered pore architectures for nanodevices



Free-standing mesoporous carbon thin films with highly ordered pore architectures for nanodevices



Journal of the American Chemical Society 133(38): 15148-15156



We report for the first time the synthesis of free-standing mesoporous carbon films with highly ordered pore architecture by a simple coating-etching approach, which have an intact morphology with variable sizes as large as several square centimeters and a controllable thickness of 90 nm to ∼3 μm. The mesoporous carbon films were first synthesized by coating a resol precursors/Pluronic copolymer solution on a preoxidized silicon wafer and forming highly ordered polymeric mesostructures based on organic-organic self-assembly, followed by carbonizing at 600 °C and finally etching of the native oxide layer between the carbon film and the silicon substrate. The mesostructure of this free-standing carbon film is confirmed to be an ordered face-centered orthorhombic Fmmm structure, distorted from the (110) oriented body-centered cubic Im3̅m symmetry. The mesoporosity of the carbon films has been evaluated by nitrogen sorption, which shows a high specific BET surface area of 700 m(2)/g and large uniform mesopores of ∼4.3 nm. Both mesostructures and pore sizes can be tuned by changing the block copolymer templates or the ratio of resol to template. These free-standing mesoporous carbon films with cracking-free uniform morphology can be transferred or bent on different surfaces, especially with the aid of the soft polymer layer transfer technique, thus allowing for a variety of potential applications in electrochemistry and biomolecule separation. As a proof of concept, an electrochemical supercapacitor device directly made by the mesoporous carbon thin films shows a capacitance of 136 F/g at 0.5 A/g. Moreover, a nanofilter based on the carbon films has shown an excellent size-selective filtration of cytochrome c and bovine serum albumin.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 053300397

Download citation: RISBibTeXText

PMID: 21854032

DOI: 10.1021/ja2056227


Related references

Synthesis and characterization of highly ordered mesoporous thin films with -COOH terminated pore surfaces. Chemical Communications 2003(3): 370-371, 2003

Preparation of amino-functionalized mesoporous silica thin films with highly ordered large pore structures. Journal of Sol-Gel Science and Technology 43(3): 305-311, 2007

Preparation of a self-standing mesoporous carbon membrane with perpendicularly-ordered pore structures. Chemical Communications 2008(44): 5809-5811, 2008

Highly ordered hybrid mesoporous bifunctional thin films. Chemical Communications 2004(24): 2854-2855, 2004

Variations in mechanical and thermal properties of mesoporous alumina thin films due to porosity and ordered pore structure. Journal of Colloid and Interface Science 345(1): 120-124, 2010

First direct synthesis of highly ordered bifunctionalized mesoporous silica thin films. Journal of Nanoscience and Nanotechnology 6(2): 377-381, 2006

Synthesis and photocatalytic properties of highly crystalline and ordered mesoporous TiO2 thin films. Chemical Communications 2004(14): 1670-1671, 2004

Highly interconnected ordered mesoporous carbon-carbon nanotube nanocomposites: Pt-free, highly efficient, and durable counter electrodes for dye-sensitized solar cells. Chemical Communications 48(65): 8057-8059, 2012

Open pore architecture of an ordered mesoporous IrO2 thin film for highly efficient electrocatalytic water oxidation. Chemsuschem 8(5): 795-799, 2015

Highly ordered, accessible and nanocrystalline mesoporous TiO₂ thin films on transparent conductive substrates. Acs Applied Materials and Interfaces 4(8): 4320-4330, 2012

Synthesis and characterization of highly ordered functional mesoporous silica thin films with positively chargeable -NH2 groups. Chemical Communications 2003(10): 1146-1147, 2003

Highly ordered transparent mesoporous TiO2 thin films: an attractive matrix for efficient immobilization and spectroelectrochemical characterization of cytochrome c. Chemical Communications 2009(48): 7494-7496, 2009

Controlling the Pore Size of Mesoporous Carbon Thin Films through Thermal and Solvent Annealing. Small 13(15):, 2017

Free-standing, well-aligned ordered mesoporous carbon nanofibers on current collectors for high-power micro-supercapacitors. Chemical Communications 49(57): 6406-6408, 2013

Highly ordered nanoporous carbon films with tunable pore diameters and their excellent sensing properties. Chemistry 21(2): 697-703, 2015