R. A. D. Pattrick
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View article: Selenium Uptake from Livestock Pasture Extremely Enriched in Selenium, Molybdenum and Uranium: A Field and X-ray Absorption Study
Selenium Uptake from Livestock Pasture Extremely Enriched in Selenium, Molybdenum and Uranium: A Field and X-ray Absorption Study Open
The agricultural soils of West Limerick, Ireland, contain very localised, extremely high natural Se concentrations that reach levels that are very toxic to grazing livestock. The Carboniferous shales that formed in anoxic deep-water marine…
View article: Bacterial production of vanadium ferrite spinel (Fe,V)<sub>3</sub>O<sub>4</sub> nanoparticles
Bacterial production of vanadium ferrite spinel (Fe,V)<sub>3</sub>O<sub>4</sub> nanoparticles Open
Biogenic nanoscale vanadium magnetite is produced by converting V(V)-bearing ferrihydrites through reductive transformation using the metal-reducing bacterium Geobacter sulfurreducens . With increasing vanadium in the ferrihydrite, the amo…
View article: Radiation Damage Effects in Chlorite Investigated Using Microfocus Synchrotron Techniques
Radiation Damage Effects in Chlorite Investigated Using Microfocus Synchrotron Techniques Open
A detailed understanding of the mechanisms and effects of radiation damage in phyllosilicate minerals is a necessary component of the evaluation of the safety case for a deep geological disposal facility (GDF) for radioactive waste. Struct…
View article: Biosynthesis and Characterization of Copper Nanoparticles Using <i>Shewanella oneidensis</i>: Application for Click Chemistry
Biosynthesis and Characterization of Copper Nanoparticles Using <i>Shewanella oneidensis</i>: Application for Click Chemistry Open
Copper nanoparticles (Cu‐NPs) have a wide range of applications as heterogeneous catalysts. In this study, a novel green biosynthesis route for producing Cu‐NPs using the metal‐reducing bacterium, Shewanella oneidensis is demonstrated. Thi…
View article: Magnetic spectroscopy of nanoparticulate greigite, Fe<sub>3</sub>S<sub>4</sub>
Magnetic spectroscopy of nanoparticulate greigite, Fe<sub>3</sub>S<sub>4</sub> Open
Synthesis of Ni and Zn substituted nano-greigite, Fe 3 S 4 , is achieved from single source diethyldithiocarbamato precursor compounds, producing particles typically 50–100 nm in diameter with plate-like pseudohexagonal morphologies. Up to…
View article: 3D elemental mapping of materials and structures by laboratory scale spectroscopic X-ray tomography
3D elemental mapping of materials and structures by laboratory scale spectroscopic X-ray tomography Open
Using a microfocus X-ray tube and pixelated energy-resolving detector it is possible to measure the X-ray absorption spectrum of a material with high spatial resolution. Given sufficient energy resolution in the detector it is possible to …
View article: Carbon sequestration in the soils of Northern Ireland: potential based on mineralogical controls
Carbon sequestration in the soils of Northern Ireland: potential based on mineralogical controls Open
Complex relationships between soil organic carbon (SOC), mineralogy, land-use and climate may exist in the soils of Northern Ireland. Greater understanding of these interactions can improve the effectiveness of SOC sequestration and manage…
View article: Characterising legacy spent nuclear fuel pond materials using microfocus X-ray absorption spectroscopy
Characterising legacy spent nuclear fuel pond materials using microfocus X-ray absorption spectroscopy Open
Analysis of a radioactive, coated concrete core from the decommissioned, spent nuclear fuel cooling pond at the Hunterston-A nuclear site (UK) has provided a unique opportunity to study radionuclides within a real-world system. The core, o…
View article: Radiation damage in biotite mica by accelerated α-particles: A synchrotron microfocus X-ray diffraction and X-ray absorption spectroscopy studyk
Radiation damage in biotite mica by accelerated α-particles: A synchrotron microfocus X-ray diffraction and X-ray absorption spectroscopy studyk Open
A critical radiation damage assessment of the materials that will be present in a Geological Disposal Facility (GDF) for radioactive waste is a priority for building a safety case. Detailed analysis of the effects of high-energy α-particle…
View article: Effects of Microbial Fe(III) Reduction on the Sorption of Cs and Sr on Biotite and Chlorite
Effects of Microbial Fe(III) Reduction on the Sorption of Cs and Sr on Biotite and Chlorite Open
Microbially mediated reduction of Fe(III) in chlorite and biotite by Shewanella oneidensis MR-1 leads to a significant reduction in sorption of both Cs and Sr compared to the abiotic systems. As seen in previous studies, biotite is a more …
View article: Radiation damage haloes in biotite investigated using high-resolution transmission electron microscopy
Radiation damage haloes in biotite investigated using high-resolution transmission electron microscopy Open
The complex, nanometer-scale structural changes resulting from long-term α-particle bombardment of the mineral biotite are revealed for the first time using high-resolution transmission electron microscope (HRTEM) imaging. Radiohaloes are …