Show simple item record  

dc.contributor.authorMcDonald-Wharry, John
dc.contributor.authorRipberger, Georg
dc.contributor.authorManley-Harris, Merilyn
dc.contributor.authorPickering, Kim L.
dc.coverage.spatialMassey University, Palmerston North, New Zealand
dc.date.accessioned2015-01-22T23:17:52Z
dc.date.available2013
dc.date.available2015-01-22T23:17:52Z
dc.date.issued2013
dc.identifier.citationMcDonald-Wharry, J., Ripberger, G., Manley-Harris, M., & Pickering, K. L. (2013). Studying carbonisation with raman spectroscopy. Presented at the New Zealand 2013 Biochar Workshop – The Final Answer?, 04-05 Jul 2013, Massey University, Palmerston North, New Zealand.en
dc.identifier.urihttps://hdl.handle.net/10289/9076
dc.description.abstractRaman spectroscopy can provide fast and non-destructive analysis of carbonaceous materials. As it is able to detect nanometre-sized structural features, Raman spectroscopy is widely used in the study of carbon nanotubes, fullerenes, graphenes, and many other carbon-rich materials. Raman analysis has previously shown potential for estimating the heat treatment temperatures (HTT) employed in the preparation of Japanese cedar charcoals which suggested future usefulness in quality control . In the current work, Raman spectroscopy was used to investigate the nanostructural development which had occurred within various chars prepared and carbonised at a range of heat treatment temperatures between ≈ 340°C and 1000°C. Chars were produced from sucrose sugar as standard precursor of high purity and two sources of biomass common in New Zealand (Radiata pine wood and Harakeke leaf fibres). In chars produced at lower HTTs, signals could be detected which were interpreted as representing hydrogen-rich amorphous carbon structures. In contrast, the Raman spectra of well-carbonised chars produced at higher HTTs featured signals consistent with graphene-like structures with coherent domains limited in size to below a few nanometres across. Measurement of such signals provides the ability to evaluate the extent of nanostructural development, identify char samples which are ‘undercooked’ when compared to other char samples, and estimate effective HTTs used in the production of a given char sample. More detailed Raman analysis of Radiata-derived chars was carried out, including analysis of chars produced from carbonising pyrolysis tars. Results of Raman analysis were correlated to H/C atom ratios obtained through elemental analysis for these chars produced from Radiata pine.
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.relation.urihttp://seat.massey.ac.nz/conferences/biochar/2013%20CD/session%202/s2t1_john.pdf
dc.sourceNew Zealand 2013 Biochar Workshop – The Final Answer?
dc.titleStudying carbonisation with raman spectroscopy
dc.typeConference Contribution
pubs.begin-page16en_NZ
pubs.elements-id119047
pubs.end-page16en_NZ
pubs.finish-date2013-07-05
pubs.start-date2013-07-04


Files in this item

This item appears in the following Collection(s)

Show simple item record