BILBY: Time-of-Flight Small Angle Scattering Instrument

Соколова, Aнна; Christoforidis, Jason; Eltobaji, Andrew; Barnes, John; Darmann, F.; Whitten, Andrew E.; Campo, Liliana de

doi:10.1080/10448632.2016.1163980

Cited by 66 publications

(39 citation statements)

References 10 publications

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“…Small-angle neutron scattering (SANS) was employed to characterize the micellar structure using the Bilby instrument at ANSTO. 29 The instrument was used in time-of-flight mode using neutrons with wavelengths between 3.0 and . Data were reduced and put on an absolute scale relative to the direct beam using Mantid 30 and then solvent subtracted.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Continuous Mesoporous Pd Films by Electrochemical Deposition in Nonionic Micellar Solution

Iqbal

Wood

et al. 2017

Chem. Mater.

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Mesoporous metals that combine catalytic activity and high surface area can provide more opportunities for electrochemical applications. Various synthetic methods, including hard and soft templating, have been developed to prepare mesoporous/nanoporous metals. Micelle assembly, typically involved in soft-templates, is flexible and convenient for such purposes. It is, however, difficult to control, and the ordering is significantly destroyed during the metal deposition process, which is detrimental when it comes to designing precisely mesostructured materials. In the present work, mesoporous Pd films were uniformly electrodeposited using a nonionic surfactant, triblock copolymer poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide), as a pore-directing agent. The interaction between micelles and metal precursors greatly influences the metal growth and determines the final structure. The water-coordinated species interact with the ethylene oxide moiety of the micelles to effectively drive the Pd(II) species toward the working electrode surface. From small-angle neutron scattering data, it is found that spherical P123 micelles, with an average diameter of ∼14 nm, are formed in the electrolyte, and the addition of Pd ions does not significantly modify their structure, which is the essence of the micelle assembly approach. The uniformly sized mesopores are formed over the entire mesoporous Pd film and have an average pore diameter of 10.9 nm. Cross-sectional observation of the film also shows mesopores spanning continuously from the bottom to the top of the film. The crystallinity, crystal phase, and electronic coordination state of the Pd film are also confirmed. Through this study, it is found that the optimized surfactant concentration and applied deposition potential are the key factors to govern the formation of homogeneous and well-distributed pores over the entire film. Interestingly, the as-prepared mesoporous Pd films exhibit superior electrocatalytic activity toward the ethanol oxidation reaction by fully utilizing the accessible active surface area. Our approach combines electrochemistry with colloidal and coordination chemistry and is widely applicable to other promising metals and alloy electrocatalysts.

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Section: ■ Experimental Sectionmentioning

confidence: 99%

Continuous Mesoporous Pd Films by Electrochemical Deposition in Nonionic Micellar Solution

Iqbal

Wood

et al. 2017

Chem. Mater.

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“…The Mantid software suite (Arnold et al, 2014) is used to reduce BILBY ToF data (one-or two-dimensional) on an absolute scale against the direct beam intensity, correcting for sample thickness, background scattering, transmission, gravity and solid angle (Seeger & Hjelm, 1991;Sokolova et al, 2016;Heenan et al, 1997). Equally, the reduction software can be used to reduce monochromatic data collected from BILBY.…”

Section: Data Reductionmentioning

confidence: 99%

“…BILBY's complementarity to the other SANS instruments at ANSTO has been demonstrated. Its particular strength lies in the collection of kinetic data on samples and its high wavelength resolution, and it is even being used to carry out Braggedge neutron imaging experiments (Salvemini et al, 2017;Sokolova et al, 2016). In the near future we will implement a number of upgrades to the instrument and data-reduction software that will improve the reliability of the instrument, while also improving the usability of the data-reduction workflow.…”

Section: Figure 12mentioning

confidence: 99%

Performance and characteristics of the BILBY time-of-flight small-angle neutron scattering instrument

et al. 2019

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BILBY is a recently constructed and commissioned time-of-flight small-angle neutron scattering instrument, operated by the Australian Centre for Neutron Scattering at the Australian Nuclear Science and Technology Organisation (ANSTO). BILBY provides a wide accessible q range (q ' 1.0 Â 10 À3 Å À1 to $1.8 Å À1 ) and variable wavelength resolution (Á/ ' 3-30%) to complement the other small-angle and ultra-small-angle neutron scattering capabilities available at ANSTO. Since its construction, BILBY has been used to study samples from a wide range of scientific disciplines, including biology, chemistry, physics and materials science. This article describes the BILBY design and components, and shows data collected from a number of reference samples.

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“…Small angle neutron scattering. Small angle neutron scattering (SANS) experiments were carried out on a BILBY 34 time-of-flight SANS instrument line at ANSTO, Australia, with a range of neutron wavelengths from 2 to 17 Å. The rear detector was placed at 10 m and the sample-to-detector distance to the top/bottom and left/right curtains were 4.7 m and 3.7 m respectively, to cover a range of scattering vectors, q (q = 4p sin(y)/l, where 2y is the scattering angle), from 0.0025 to 0.57 Å À1 .…”

Section: Characterisationmentioning

confidence: 99%

Chain shape and thin film behaviour of poly(thiophene)-graft-poly(acrylate urethane)

et al. 2018

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Electronic graft copolymers with conjugated polymer backbones are emerging as promising materials for various organic electronics. These materials combine the advantages of organic electronic materials, such as molecular tunability of opto-electronic and electrochemical properties, with solution processability and other 'designer' physical and mechanical properties imparted through the addition of grafted polymer side chains. Future development of such materials with complex molecular architecture requires a better understanding of the effect of molecular parameters, such as side chain length, on the structure and, in turn, on the electronic properties. In this study, poly(thiophene)-graft-poly(acrylate urethane) (PTh-g-PAU) was examined as a model system and we investigate the effect of side chain length on the overall shape and size in solution. Furthermore, the changes in the swelling behaviour of the graft copolymer thin films help in understanding their electrochemical redox properties.

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BILBY: Time-of-Flight Small Angle Scattering Instrument

Cited by 66 publications

References 10 publications

Continuous Mesoporous Pd Films by Electrochemical Deposition in Nonionic Micellar Solution

Continuous Mesoporous Pd Films by Electrochemical Deposition in Nonionic Micellar Solution

Performance and characteristics of the BILBY time-of-flight small-angle neutron scattering instrument

Chain shape and thin film behaviour of poly(thiophene)-graft-poly(acrylate urethane)

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