Professor Andrei Khlobystov's Outputs (101)

The effects of encapsulation on damage to molecules by electron radiation (2019)
Journal Article
Skowron, S. T., Roberts, S. L., Khlobystov, A. N., & Besley, E. (2019). The effects of encapsulation on damage to molecules by electron radiation. Micron, 120, 96-103. https://doi.org/10.1016/j.micron.2019.02.007

Encapsulation of materials imaged by high resolution transmission electron microscopy presents a promising route to the reduction of sample degradation, both independently and in combination with other traditional solutions to controlling radiation d... Read More about The effects of encapsulation on damage to molecules by electron radiation.

Steric and electronic control of 1,3-dipolar cycloaddition reactions in carbon nanotube nanoreactors (2019)
Journal Article
Miners, S. A., Fay, M. W., Baldoni, M., Besley, E., Khlobystov, A. N., & Rance, G. A. (2019). Steric and electronic control of 1,3-dipolar cycloaddition reactions in carbon nanotube nanoreactors. Journal of Physical Chemistry C, 123(10), 6294-6302. https://doi.org/10.1021/acs.jpcc.9b01190

The use of single-walled carbon nanotubes as effective nanoreactors for preparative bimolecular reactions has been demonstrated for the first time. We show that the extreme spatial confinement of guest reactant molecules inside host carbon nanotubes... Read More about Steric and electronic control of 1,3-dipolar cycloaddition reactions in carbon nanotube nanoreactors.

Three dimensional nanoscale analysis reveals aperiodic mesopores in a covalent organic framework and conjugated microporous polymer (2019)
Journal Article
Stoppiello, C. T., Isla, H., Martínez-Abadía, M., Fay, M. W., Parmenter, C. D. J., Roe, M. J., Lerma-Berlanga, B., Martí-Gastaldo, C., Mateo-Alonso, A., & Khlobystov, A. N. (2019). Three dimensional nanoscale analysis reveals aperiodic mesopores in a covalent organic framework and conjugated microporous polymer. Nanoscale, 11(6), 2848-2854. https://doi.org/10.1039/c8nr10086a

The integrated analytical approach developed in this study offers a powerful methodology for the structural characterization of complex molecular nanomaterials. Structures of a covalent organic framework based on boronate esters (COF-5) and a conjuga... Read More about Three dimensional nanoscale analysis reveals aperiodic mesopores in a covalent organic framework and conjugated microporous polymer.

Synthesis of hydroxylated group IV metal oxides inside hollow graphitised carbon nanofibers: nano-sponges and nanoreactors for enhanced decontamination of organophosphates (2018)
Journal Article
Astle, M. A., Rance, G. A., Fay, M. W., Notman, S., Sambrook, M. R., & Khlobystov, A. N. (2018). Synthesis of hydroxylated group IV metal oxides inside hollow graphitised carbon nanofibers: nano-sponges and nanoreactors for enhanced decontamination of organophosphates. Journal of Materials Chemistry A, 6(41), 20444-20453. https://doi.org/10.1039/c8ta08100j

The confinement and enhanced catalytic properties of hydroxylated group IV metal oxide nanostructures inside hollow graphitised carbon nanofibers (GNF) has been demonstrated. GNF – a structural analogue of carbon nanotubes – were effectively filled w... Read More about Synthesis of hydroxylated group IV metal oxides inside hollow graphitised carbon nanofibers: nano-sponges and nanoreactors for enhanced decontamination of organophosphates.

Movement of palladium nanoparticles in hollow graphitised nanofibres: the role of migration and coalescence in nanocatalyst sintering during the Suzuki–Miyaura reaction (2018)
Journal Article
Lodge, R. W., Rance, G. A., Fay, M. W., & Khlobystov, A. N. (2018). Movement of palladium nanoparticles in hollow graphitised nanofibres: the role of migration and coalescence in nanocatalyst sintering during the Suzuki–Miyaura reaction. Nanoscale, https://doi.org/10.1039/c8nr05267k

The evolution of individual palladium nanoparticle (PdNP) catalysts, in graphitised nanofibres (GNF), in the liquid-phase Suzuki-Miyaura (SM) reaction has been appraised. The combination of identical location-transmission electron microscopy (IL-TEM)... Read More about Movement of palladium nanoparticles in hollow graphitised nanofibres: the role of migration and coalescence in nanocatalyst sintering during the Suzuki–Miyaura reaction.

Direct correlation of carbon nanotube nucleation and growth with the atomic structure of rhenium nanocatalysts stimulated and imaged by the electron beam (2018)
Journal Article
Cao, K., Chamberlain, T. W., Biskupek, J., Zoberbier, T., Kaiser, U., & Khlobystov, A. N. (2018). Direct correlation of carbon nanotube nucleation and growth with the atomic structure of rhenium nanocatalysts stimulated and imaged by the electron beam. Nano Letters, https://doi.org/10.1021/acs.nanolett.8b02657

Sub-nanometre Re clusters confined in a single-walled carbon nanotube are activated by the 80 keV electron beam to promote the catalytic growth of a new carbon nanotube. Transmission electron microscopy images the entire process step-by-step, with at... Read More about Direct correlation of carbon nanotube nucleation and growth with the atomic structure of rhenium nanocatalysts stimulated and imaged by the electron beam.

Comparison of atomic scale dynamics for the middle and late transition metal nanocatalysts (2018)
Journal Article
Cao, K., Zoberbier, T., Biskupek, J., Botos, A., McSweeney, R. L., Kurtoglu, A., Stoppiello, C. T., Markevich, A. V., Besley, E., Chamberlain, T. W., Kaiser, U., & Khlobystov, A. N. (2018). Comparison of atomic scale dynamics for the middle and late transition metal nanocatalysts. Nature Communications, 9, 1-10. https://doi.org/10.1038/s41467-018-05831-z

Catalysis of chemical reactions by nanosized clusters of transition metals holds the key to the provision of sustainable energy and materials. However, the atomistic behaviour of nanocatalysts still remains largely unknown due to uncertainties associ... Read More about Comparison of atomic scale dynamics for the middle and late transition metal nanocatalysts.

Magnetically recyclable catalytic carbon nanoreactors (2018)
Journal Article
Aygün, M., Chamberlain, T. W., Gimenez-Lopez, M. D. C., & Khlobystov, A. N. (2018). Magnetically recyclable catalytic carbon nanoreactors. Advanced Functional Materials, 28(34), Article 1802869. https://doi.org/10.1002/adfm.201802869

Multifunctional nanoreactors are assembled using hollow graphitized carbon nanofibers (GNFs) combined with nanocatalysts (Pd or Pt) and magnetic nanoparticles. The latter are introduced in the form of carbon‐coated cobalt nanomagnets (Co@Cn) adsorbed... Read More about Magnetically recyclable catalytic carbon nanoreactors.

High-temperature molecular beam epitaxy of hexagonal boron nitride with high active nitrogen fluxes (2018)
Journal Article
Cheng, T. S., Summerfield, A., Mellor, C. J., Khlobystov, A. N., Eaves, L., Foxon, C. T., Beton, P. H., & Novikov, S. V. (2018). High-temperature molecular beam epitaxy of hexagonal boron nitride with high active nitrogen fluxes. Materials, 11(7), https://doi.org/10.3390/ma11071119

Hexagonal boron nitride (hBN) has attracted much attention as a key component in van der Waals heterostructures and as a wide band gap material for deep-ultraviolet devices. We have recently demonstrated plasma-assisted molecular beam epitaxy (PA-MBE... Read More about High-temperature molecular beam epitaxy of hexagonal boron nitride with high active nitrogen fluxes.

Formation of hollow carbon nanoshells from thiol stabilised silver nanoparticles via heat treatment (2018)
Journal Article
Watts, J. A., Fay, M. W., Rance, G. A., Brown, P. D., & Khlobystov, A. N. (2018). Formation of hollow carbon nanoshells from thiol stabilised silver nanoparticles via heat treatment. Carbon, 139, 538-544. https://doi.org/10.1016/j.carbon.2018.06.074

Uniform, less 10 nm sized, hollow carbon nano-shells (HCNS) have been prepared via a single-step, thermal treatment of alkanethiol stabilised Ag nanoparticles (TS-AgNP). Direct evidence for the formation of spherical HCNS from TS-AgNP is provided by... Read More about Formation of hollow carbon nanoshells from thiol stabilised silver nanoparticles via heat treatment.

Moiré-modulated conductance of hexagonal boron nitride tunnel barriers (2018)
Journal Article
Summerfield, A., Kozikov, A., Cheng, T. S., Davies, A., Cho, Y.-J., Khlobystov, A. N., Mellor, C. J., Foxon, C. T., Watanabe, K., Taniguchi, T., Eaves, L., Novoselov, K. S., Novikov, S. V., & Beton, P. H. (in press). Moiré-modulated conductance of hexagonal boron nitride tunnel barriers. Nano Letters, https://doi.org/10.1021/acs.nanolett.8b01223

Monolayer hexagonal boron nitride (hBN) tunnel barriers investigated using conductive atomic force microscopy reveal moiré patterns in the spatial maps of their tunnel conductance consistent with the formation of a moiré superlattice between the hB... Read More about Moiré-modulated conductance of hexagonal boron nitride tunnel barriers.

High-temperature molecular beam epitaxy of hexagonal boron nitride layers (2018)
Journal Article
Cheng, T. S., Summerfield, A., Mellor, C. J., Davies, A., Khlobystov, A. N., Eaves, L., Foxon, C. T., Beton, P. H., & Novikov, S. V. (in press). High-temperature molecular beam epitaxy of hexagonal boron nitride layers. Journal of Vacuum Science and Technology B, 36(2), Article 02D103-1. https://doi.org/10.1116/1.5011280

The growth and properties of hexagonal boron nitride (hBN) have recently attracted much attention due to applications in graphene-based monolayer thick 2D-structures and at the same time as a wide band gap material for deep-ultraviolet device (DUV) a... Read More about High-temperature molecular beam epitaxy of hexagonal boron nitride layers.

Magnetic shepherding of nanocatalysts through hierarchically-assembled Fe-filled CNTs hybrid (2018)
Journal Article
Melchionna, M., Beltram, A., Stopin, A., Montini, T., Lodge, R. W., Khlobystov, A. N., Bonifazi, D., Prato, M., & Fornasiero, P. (2018). Magnetic shepherding of nanocatalysts through hierarchically-assembled Fe-filled CNTs hybrid. Applied Catalysis B: Environmental, 227, https://doi.org/10.1016/j.apcatb.2018.01.049

Mechanically robust, chemically stable and electronically active carbon nanotubes (CNTs) are widely used as supports in catalysis. Synergistic effects between CNT and the active phase critically depend on the homogeneity of the carbon/inorganic inter... Read More about Magnetic shepherding of nanocatalysts through hierarchically-assembled Fe-filled CNTs hybrid.

Encapsulation of cadmium selenide nanocrystals in biocompatible nanotubes: DFT calculations, X-ray diffraction investigations and confocal fluorescence imaging (2018)
Journal Article
Calatayud, D. G., Ge, H., Kuganathan, N., Mirabello, V., Jacobs, R. M., Rees, N. H., Stoppiello, C. T., Khlobystov, A. N., Tyrrell, R. M., Da Como, E., & Pascu, S. I. (2018). Encapsulation of cadmium selenide nanocrystals in biocompatible nanotubes: DFT calculations, X-ray diffraction investigations and confocal fluorescence imaging. ChemistryOpen, 7(2), https://doi.org/10.1002/open.201700184

The encapsulation of CdSe nanocrystals within singlewalled carbon nanotubes (SWNTs) cavities of varying dimensions at elevated temperatures under strictly air-tight conditions is described for the first time. The structures of CdSe nanocrystals under... Read More about Encapsulation of cadmium selenide nanocrystals in biocompatible nanotubes: DFT calculations, X-ray diffraction investigations and confocal fluorescence imaging.

Lattice-Matched Epitaxial Graphene Grown on Boron Nitride (2017)
Journal Article
Davies, A., Albar, J., Summerfield, A., Thomas, J. C., Cheng, T. S., Korolkov, V. V., Stapleton, E., Wrigley, J., Goodey, N. L., Mellor, C. J., Khlobystov, A. N., Watanabe, K., Taniguchi, T., Foxon, C., Eaves, L., Novikov, S. V., & Beton, P. H. (2018). Lattice-Matched Epitaxial Graphene Grown on Boron Nitride. Nano Letters, 18(1), 498-504. https://doi.org/10.1021/acs.nanolett.7b04453

Lattice-matched graphene on hexagonal boron nitride is expected to lead to the formation of a band-gap but requires the formation of highly strained material and has not hitherto been realised. We demonstrate that aligned, lattice-matched graphene ca... Read More about Lattice-Matched Epitaxial Graphene Grown on Boron Nitride.

Comparison of alkene hydrogenation in carbon nanoreactors of different diameters: probing the effects of nanoscale confinement on ruthenium nanoparticle catalysis (2017)
Journal Article
Aygun, M., Stoppiello, C. T., Lebedeva, M. A., Smith, E. F., Gimenez-Lopez, M. D. C., Khlobystov, A. N., & Chamberlain, T. W. (in press). Comparison of alkene hydrogenation in carbon nanoreactors of different diameters: probing the effects of nanoscale confinement on ruthenium nanoparticle catalysis. Journal of Materials Chemistry A, 40(5), https://doi.org/10.1039/C7TA03691D

The catalytic properties of ruthenium nanoparticles (RuNPs) supported in carbon nanoreactors of different diameters – single walled carbon nanotubes (SWNTs, width of cavity 1.5 nm) and hollow graphitised nanofibers (GNFs, width of cavity 50-70 nm) –... Read More about Comparison of alkene hydrogenation in carbon nanoreactors of different diameters: probing the effects of nanoscale confinement on ruthenium nanoparticle catalysis.

A one-pot-one-reactant synthesis of platinum compounds at the nanoscale (2017)
Journal Article
Stoppiello, C. T., Biskupek, J., Li, Z. Y., Rance, G. A., Botos, A., Fogarty, R. M., Bourne, R. A., Yuan, J., Lovelock, K., Thompson, P., Fay, M. W., Kaiser, U., Chamberlain, T. W., & Khlobystov, A. N. (2017). A one-pot-one-reactant synthesis of platinum compounds at the nanoscale. Nanoscale, 9(38), https://doi.org/10.1039/C7NR05976K

The preparation of inorganic nanomaterials with a desired structure and specific properties requires the ability to strictly control their size, shape and composition. A series of chemical reactions with platinum compounds carried out within the 1.5... Read More about A one-pot-one-reactant synthesis of platinum compounds at the nanoscale.

An atomic carbon source for high temperature molecular beam epitaxy of graphene (2017)
Journal Article
Albar, J., Summerfield, A., Cheng, T. S., Davies, A., Smith, E., Khlobystov, A. N., Mellor, C., Taniguchi, T., Watanabe, K., Foxon, C., Eaves, L., Beton, P. H., & Novikov, S. V. (in press). An atomic carbon source for high temperature molecular beam epitaxy of graphene. Scientific Reports, 7(1), Article 6598. https://doi.org/10.1038/s41598-017-07021-1

We report the use of a novel atomic carbon source for the molecular beam epitaxy (MBE) of graphene layers on hBN flakes and on sapphire wafers at substrate growth temperatures of ~1400 °C. The source produces a flux of predominantly atomic carbon, wh... Read More about An atomic carbon source for high temperature molecular beam epitaxy of graphene.

Growth of Carbon Nanotubes inside Boron Nitride Nanotubes by Coalescence of Fullerenes: Toward the World's Smallest Coaxial Cable (2017)
Journal Article
Walker, K. E., Rance, G. A., Pekker, Á., Tóháti, H. M., Fay, M. W., Lodge, R. W., Stoppiello, C. T., Kamarás, K., & Khlobystov, A. N. (2017). Growth of Carbon Nanotubes inside Boron Nitride Nanotubes by Coalescence of Fullerenes: Toward the World's Smallest Coaxial Cable. Small Methods, 1(9), 1700184. https://doi.org/10.1002/smtd.201700184

The use of boron nitride nanotubes as effective nanoscale containers for the confinement and thermal transformations of molecules of C60-fullerene has been demonstrated. The gas-phase insertion of fullerenes into the internal channel of boron nitride... Read More about Growth of Carbon Nanotubes inside Boron Nitride Nanotubes by Coalescence of Fullerenes: Toward the World's Smallest Coaxial Cable.

Chemical Reactions of Molecules Promoted and Simultaneously Imaged by the Electron Beam in Transmission Electron Microscopy (2017)
Journal Article
Skowron, S. T., Chamberlain, T. W., Biskupek, J., Kaiser, U., Besley, E., & Khlobystov, A. N. (2017). Chemical Reactions of Molecules Promoted and Simultaneously Imaged by the Electron Beam in Transmission Electron Microscopy. Accounts of Chemical Research, 50(8), 1797-1807. https://doi.org/10.1021/acs.accounts.7b00078

The main objective of this Account is to assess the challenges of transmission electron microscopy (TEM) of molecules, based on over 15 years of our work in this field, and to outline the opportunities in studying chemical reactions under the electro... Read More about Chemical Reactions of Molecules Promoted and Simultaneously Imaged by the Electron Beam in Transmission Electron Microscopy.