The initial adsorption process of benzene in double-walled carbon nanotubes studied by in situ solid-state NMR

Information of adsorption and diffusion in nanoporous material is helpful to fundamentally understand nanocatalysis and gas sensors. In this work, the adsorption process of benzene in double-walled carbon nanotubes (DWNTs) at the very earliest stages was directly monitored for the first time by using in situ solid-state 13C NMR. The results indicate that benzenes in and out of DWNTs can be conveniently distinguished by 13C MAS NMR. The kinetics of the adsorption process was obtained by integrating the 13C peaks as a function of adsorption time. The kinetic could be interpreted with a model of opposing adsorption–desorption process and the kinetic curves could be satisfyingly fitted by an exponential function.

[1]  Megha Mittal,et al.  Carbon nanotube (CNT) gas sensors for emissions from fossil fuel burning , 2014 .

[2]  Xiulian Pan,et al.  DFT Study on the NMR Chemical Shifts of Molecules Confined in Carbon Nanotubes , 2013 .

[3]  B. Pan,et al.  Application potential of carbon nanotubes in water treatment: A review. , 2013, Journal of environmental sciences.

[4]  Xiulian Pan,et al.  Enhancing chemical reactions in a confined hydrophobic environment: an NMR study of benzene hydroxylation in carbon nanotubes , 2013 .

[5]  W. Koros,et al.  Diffusion of methane and carbon dioxide in carbon molecular sieve membranes by multinuclear pulsed field gradient NMR. , 2012, Langmuir : the ACS journal of surfaces and colloids.

[6]  Xiulian Pan,et al.  NMR Study of Preferential Endohedral Adsorption of Methanol in Multiwalled Carbon Nanotubes , 2012 .

[7]  F. Mauri,et al.  Structural properties of carbon nanotubes derived from (13)C NMR , 2011 .

[8]  F. Wei,et al.  Enhanced catalytic activity of sub-nanometer titania clusters confined inside double-wall carbon nanotubes. , 2010, ChemSusChem.

[9]  Xiulian Pan,et al.  The effects of confinement inside carbon nanotubes on catalysis. , 2011, Accounts of chemical research.

[10]  T. Swager,et al.  Emerging Applications of Carbon Nanotubes , 2011 .

[11]  A. Kleinhammes,et al.  NMR methods for characterizing the pore structures and hydrogen storage properties of microporous carbons. , 2010, Journal of the American Chemical Society.

[12]  Á. Rubio,et al.  Communications: Nanomagnetic shielding: High-resolution NMR in carbon allotropes. , 2010, The Journal of chemical physics.

[13]  P. Serp,et al.  Catalysis in Carbon Nanotubes , 2010 .

[14]  Xiulian Pan,et al.  Syngas Segregation Induced by Confinement in Carbon Nanotubes: A Combined First-Principles and Monte Carlo Study , 2009 .

[15]  E. Zurek,et al.  NMR computations for carbon nanotubes from first principles: Present status and future directions , 2009 .

[16]  T. Ando.  The electronic properties of graphene and carbon nanotubes , 2009 .

[17]  X. Bao,et al.  Enhanced in situ continuous-flow MAS NMR for reaction kinetics in the nanocages. , 2009, Journal of the American Chemical Society.

[18]  E. G. Nikolaev,et al.  NMR Investigation of the local diamagnetic properties of carbon structures with multilayer nanotubes , 2009 .

[19]  Xinhe Bao,et al.  Reactions over catalysts confined in carbon nanotubes. , 2008, Chemical communications.

[20]  G. Galli,et al.  Water Confined in Carbon Nanotubes: Magnetic Response and Proton Chemical Shieldings , 2008 .

[21]  Robert Schlögl,et al.  Surface-Modified Carbon Nanotubes Catalyze Oxidative Dehydrogenation of n-Butane , 2008, Science.

[22]  M. Stadermann,et al.  Identification of endohedral water in single-walled carbon nanotubes by (1)H NMR. , 2008, Nano letters.

[23]  K. Harris,et al.  Mapping the evolution of adsorption of water in nanoporous silica by in situ solid-state 1H NMR spectroscopy. , 2008, Journal of the American Chemical Society.

[24]  K. Kudin,et al.  Electronic response properties of carbon nanotubes in magnetic fields. , 2008, ACS nano.

[25]  John T Yates,et al.  Molecular views of physical adsorption inside and outside of single-wall carbon nanotubes. , 2007, Accounts of chemical research.

[26]  K. Harris,et al.  Probing the evolution of adsorption on nanoporous solids by in situ solid-state NMR spectroscopy. , 2007, Chemphyschem : a European journal of chemical physics and physical chemistry.

[27]  W. S. Veeman,et al.  High resolution NMR of water absorbed in single-wall carbon nanotubes , 2006 .

[28]  H. Kataura,et al.  Water dynamics inside single-wall carbon nanotubes: NMR observations , 2006 .

[29]  Qiang Zhang,et al.  Effect of the reaction atmosphere on the diameter of single-walled carbon nanotubes produced by chemical vapor deposition , 2006 .

[30]  O. Yaghi,et al.  NMR studies on the diffusion of hydrocarbons on the metal-organic framework material MOF-5. , 2006, Angewandte Chemie.

[31]  J. Yates,et al.  Observation of a one-dimensional adsorption site on carbon nanotubes: adsorption of alkanes of different molecular lengths. , 2005, The journal of physical chemistry. B.

[32]  A. Kleinhammes,et al.  Gas adsorption in single-walled carbon nanotubes studied by NMR , 2003 .

[33]  M. Yumura,et al.  13C NMR study of 13C-enriched single-wall carbon nanotubes synthesized by catalytic decomposition of methane , 2003 .

[34]  P. Bernier,et al.  Magnetic interactions in carbon nanostructures , 2002 .

[35]  T. Bonagamba,et al.  Magnetic susceptibility effects on 13C MAS NMR spectra of carbon materials and graphite. , 2001, Solid state nuclear magnetic resonance.

[36]  V. Roddatis,et al.  Carbon Nanofilaments in Heterogeneous Catalysis: An Industrial Application for New Carbon Materials? , 2001, Angewandte Chemie.

[37]  A. Liu,et al.  PFG NMR Study of Diffusion in MFI-Type Zeolites: Evidence of the Existence of Intracrystalline Transport Barriers , 2001 .