Biography
Conference/meeting presentations:
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- 2015: Euroclay, Edinburgh – Oral presentation – “An investigation into the pH effects on the CEC of halloysite.”
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- 2017: Clay Minerals Group, Research in Progress meeting – Oral presentation – “The adsoprtion of phosphate by halloysite nanotubes.”
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- 2017: International Clay Conference (ICC), Granada – Oral presentation – “The adsorption of phosphate by halloysite nanotubes.”
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- 2019: Macaulay Development Trust lecture, poster- “Surface chemistry of kaolin minerals.”
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- 2018: Mid-European Clay Conference (MECC), Zagreb – Oral presentation – “Investigation of the surface sites of tubular halloysite using phosphate anions.”
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- 2019: Euroclay, Paris – Oral presentation – “Aspects of the surface and internal structure of halloysite nanotubes as revealed by various microscopy methods.”
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- 2019: Macaulay Development Trust lecture, poster – “Use of neutron scattering and diffraction to study interlayer water in halloysite nanotubes.”
Committees and professional accreditations:
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- Registered scientist with the RSC
- 2017-2019; 2022-current – Ordinary member of the Aberdeen and North East Local Section of the Royal Society of Chemistry
- 2019-2022 – Secretary for the Aberdeen and North East Local Section of the Royal Society of Chemistry
- 2022-2024 – Co-founder and co-editor of Phyllosophical News, the Clay Minerals Group newsletter
- 2021-2023 – Ordinary member of the Mineralogical Society of the UK and Ireland Council
Research
Nia’s work involves both commercial and research projects employing the technique of X-Ray Powder Diffraction and applications of clay minerals for environmental and technological uses.
Publications
Journals
- Gray-Wannell, N.; Cubillas, P.; Aslam, Z.; J. Holliman, P.; Christopher Greenwell, H.; Brydson, R.; Delbos, E.; Strachan, L.; Fuller, M.; Hillier, S. (2023) Morphological features of halloysite nanotubes as revealed by various microscopies, Clay Minerals Journal, 58(4), 395-407
- Gray-Wannell, N.; Holliman, P.J.; Greenwell, H.C.; Delbos, E.; Hillier, S. (2020) Adsorption of phosphate by halloysite (7 angstrom) nanotubes (HNTs)., Clay Minerals, 55, 184-193.
- Ta, C.A.K.; Pebsworth, P.A.; Liu, R.; Hillier, S.; Gray, N.; Arnason, J.T.; Young, S.L. (2018) Soil eaten by chacma baboons adsorbs polar plant secondary metabolites representative of those found in their diet., Environmental Geochemistry and Health, 40, 803-813.
- Mayor, D.J.; Gray, N.B.; Hattich, G.S.I.; Thornton, B. (2017) Detecting the presence of fish farm-derived organic matter at the seafloor using stable isotope analysis of phospholipid fatty acids., Scientific Reports, 7, Article No. 5146.
- Gray, N.; Lumsdon, D.G.; Hillier, S. (2016) Effect of pH on the cation exchange capacity of some halloysites nanotubes., Clay Minerals, 51, 373-383.
- Hillier, S.; Brydson, R.; Delbos, E.; Fraser, T.; Gray, N.; Pendlowski, H.; Phillips, I.; Robertson, J.; Wilson, I. (2016) Correlations among the mineralogical and physical properties of halloysite nanotubes (HNTs)., Clay Minerals, 51, 325-350.
- L.iang, X.J.; Hillier, S.; Pendlowski, H.; Gray, N.; Ceci, A.; Gadd, G.M. (2015) Uranium phosphate biomineralization by fungi., Environmental Microbiology, 17, 2064-2075.
- Ceci, A.; Rhee, Y.J.; Kierans, M.; Hillier, S.; Pendlowski, H.; Gray, N.; Persiani, A.M.; Gadd, G.M. (2015) Transformation of vanadinite (Pb5(VO4)3Cl) by fungi., Environmental Microbiology, 17, 2018-2034.
- Mayor, D.J.; Gray, N.B.; Elver-Evans, J.; Midwood, A.J.; Thornton, B. (2013) Metal-macrofauna interactions determine microbial community structure and function in copper contaminated sediments., PLoS ONE, 8, Article No. e64940.
- Gromov, A.V.; Gray, N.; Szilagyi, P.A.; Campbell, E.E.B. (2012) Direct grafting of carbon nanotubes with ethylenediamine., Journal of Materials Chemistry, 22, 21242-21248.
Conference papers
- Hillier, S.; Pendlowski, H.; Fraser, T.; Robertson, J.; Delbos, E.; Phillips, I.; Gray, N.; Wilson, I. (2013) Tubular halloysite., Minerals for Life, Appleton Tower, Edinburgh, 17-19 June 2013.
Conference posters / abstracts
- Gray, N.; Hillier, S; Lumsdon, D.G; Holliman, P.; Gresswell, C. (2018) Adsorption/desorption of phosphate anions by halloysite nanotubes (HNTs)., The James Hutton Institute PhD Student Retreat, Birnam, Dunkeld, 8 March 2018. (Poster).
- Hillier, S.; Pendlowski, H.; Fraser, T.; Robertson, J.; Delbos, E.; Phillips, I.; Gray, N.; Wilson, I. (2015) Correlations among mineralogical and physical properties of halloysite nano-tubes (HNTs)., Euroclay 2015 Conference, Edinburgh University, 5-10 July 2015.
