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Rapid extraction of high- and low-density microplastics from soil using high-gradient magnetic separation. (2022)
Journal Article
RAMAGE, S.J.F.F., PAGALING, E., HAGHI, R.K., DAWSON, L.A., YATES, K., PRABHU, R., HILLIER, S. and DEVALLA, S. 2022. Rapid extraction of high- and low-density microplastics from soil using high-gradient magnetic separation. Science of the total environment, [online], 831, article 154912. Available from: https://doi.org/10.1016/j.scitotenv.2022.154912

Microplastics (MPs) are present in all environments, and concerns over their possible detrimental effects on flora and fauna have arisen. Density separation (DS) is commonly used to separate MPs from soils to allow MP quantification; however, it freq... Read More about Rapid extraction of high- and low-density microplastics from soil using high-gradient magnetic separation..

The development of an electrochemical sensing device for controlled drugs. (2019)
Thesis
WADDELL, S.A. 2019. The development of an electrochemical sensing device for controlled drugs. Robert Gordon University, PhD thesis. Hosted on OpenAIR [online]. Available from: https://doi.org/10.48526/rgu-wt-1677791

Forensic chemists can be faced with a wide array of substances to test when attending clandestine drug manufacture crime scenes. Whilst many techniques exist at their disposal - such as chemical colour test reagents and immunoassays - these methods a... Read More about The development of an electrochemical sensing device for controlled drugs..

Waveguide-based machine readable fluorescence security feature for border control and security applications. (2018)
Conference Proceeding
JOHNY, J., BHAVSAR, K., OFFICER, S., ADAMS, M., PRABHU, R. 2018. Waveguide-based machine readable fluorescence security feature for border control and security applications. In Bouma, H., Prabhu, R., Stokes, R.J. and Yitzhaky, Y. (eds.) Proceedings of the 2nd Counterterrorism, crime fighting, forensics and surveillance technologies 2018 conference: co-located with the Society of Photo-optical Instrumentation Engineers (SPIE) Security and defence conference 2018, 10-13 September 2018, Berlin, Germany. Proceedings of the (SPIE), 10802. Bellingham, WA: SPIE [online], article ID 1080209. Available from: https://doi.org/10.1117/12.2501974

Border security challenges and immigration issues are increasing considerably in recent years. Counterfeiting and fraudulent use of identity and other travel documents are posing serious threats and safety concerns worldwide, ever since the advanceme... Read More about Waveguide-based machine readable fluorescence security feature for border control and security applications..

A photocatalytic impeller reactor for gas phase heterogeneous photocatalysis. (2017)
Journal Article
TOKODE, O., PRABHU, R., LAWTON, L.A. and ROBERTSON, P.K.J. 2017. A photocatalytic impeller reactor for gas phase heterogeneous photocatalysis. Journal of environmental chemical engineering [online], 5(4), pages 3942-3948. Available from: https://doi.org/10.1016/j.jece.2017.07.068

A novel photocatalytic reactor based on a stirred tank configuration has been described. This reactor employs the use of photocatalytic impellers to aid the mass transport of gaseous organic compounds during photocatalytic reactions. Experiments invo... Read More about A photocatalytic impeller reactor for gas phase heterogeneous photocatalysis..

Energy efficient operation of photocatalytic reactors based on UV LEDs for pollution remediation in water. (2017)
Conference Proceeding
PRABHU, R., HEWITT, F., GEORGIEVA, G., MEENAKSHI, H.N., LAWTON, L.A. and ROBERTSON, P.K.J. 2017. Energy efficient operation of photocatalytic reactors based on UV LEDs for pollution remediation in water. In Proceedings of OCEANS 2017, 19-22 June 2017, Aberdeen, UK. New York: IEEE [online], article number 8085011, pages 2623-2627. Available from: https://doi.org/10.1109/OCEANSE.2017.8085011

Photocatalytic technology using TiO2 is one of the emerging approaches for water treatment, especially as a final step to remove complex organics such as pesticides, hormones or humic acids. Titanium dioxide (TiO2) is a semiconductor material with st... Read More about Energy efficient operation of photocatalytic reactors based on UV LEDs for pollution remediation in water..

Extending the capability of forensic electrochemistry to the novel psychoactive substance benzylpiperazine. (2016)
Journal Article
WADDELL, S.A., FERNANDEZ, C., INVERARITY, C.C. and PRABHU, R. 2017. Extending the capability of forensic electrochemistry to the novel psychoactive substance benzylpiperazine. Sensing and bio-sensing research [online], 13, pages 28-39. Available from: https://doi.org/10.1016/j.sbsr.2016.12.001

Benzylpiperazine (BZP) is a novel psychoactive substance that is commonly abused in tablet form as an 'ecstasy-type' drug. Electroanalysis offers genuine potential for field testing of bulk drug samples. This research is the first to investigate the... Read More about Extending the capability of forensic electrochemistry to the novel psychoactive substance benzylpiperazine..

Controlled periodic illumination in semiconductor photocatalysis. (2015)
Journal Article
TOKODE, O., PRABHU, R., LAWTON, L.A. and ROBERTSON, P.K.J. 2015. Controlled periodic illumination in semiconductor photocatalysis. Journal of photochemistry and photobiology A: chemistry [online], 319-320, pages 96-106. Available from: https://doi.org/10.1016/j.jphotochem.2015.12.002

Controlled periodic illumination is a hypothesis postulated in the early 1990s for enhancing the efficiency of semiconductor photocatalytic reactions. This technique has been proposed to improve photocatalytic efficiency by the nature of photon intro... Read More about Controlled periodic illumination in semiconductor photocatalysis..

Rare elements electrochemistry: the development of a novel electrochemical sensor for the rapid detection of Europium in environmental samples using gold electrode modified with 2-pyridinol-1-oxide. (2015)
Journal Article
CRUICKSHANK, L., OFFICER, S., POLLARD, P., PRABHU, R., STUTTER, M. and FERNANDEZ, C. 2015. Rare elements electrochemistry: the development of a novel electrochemical sensor for the rapid detection of Europium in environmental samples using gold electrode modified with 2-pyridinol-1-oxide. Analytical sciences [online], 31(7), pages 623-627. Available from: https://doi.org/10.2116/analsci.31.623

This work presents for the first time the electrochemical determination of europium using cyclic voltammetry at gold electrodes modified with 2-pyridinol-1-oxide. A well-defined oxidation peak was observed in cyclic voltammetry as a result of the oxi... Read More about Rare elements electrochemistry: the development of a novel electrochemical sensor for the rapid detection of Europium in environmental samples using gold electrode modified with 2-pyridinol-1-oxide..

Photocatalytic degradation of eleven microcystin variants and nodularin by TiO2 coated glass microspheres. (2015)
Journal Article
PESTANA, C.J., EDWARDS, C., PRABHU, R., ROBERTSON, P.K.J. and LAWTON, L.A. 2015. Photocatalytic degradation of eleven microcystin variants and nodularin by TiO2 coated glass microspheres. Journal of hazardous materials [online], 300, pages 347-353. Available from: https://doi.org/10.1016/j.jhazmat.2015.07.016

Microcystins and nodularin are toxic cyanobacterial secondary metabolites produced by cyanobacteria that pose a threat to human health in drinking water. Conventional water treatment methods often fail to remove these toxins. Advanced oxidation proce... Read More about Photocatalytic degradation of eleven microcystin variants and nodularin by TiO2 coated glass microspheres..

Pharmaceutical electrochemistry: the electrochemical detection of aspirin utilising screen printed graphene electrodes as sensors platforms. (2015)
Journal Article
KRUANETR, S., PRABHU, R., POLLARD, P. and FERNANDEZ, C. 2015. Pharmaceutical electrochemistry: the electrochemical detection of aspirin utilising screen printed graphene electrodes as sensors platforms. Surface engineering and applied electrochemistry [online], 51(3), pages 283-289. Available from: https://doi.org/10.3103/S1068375515030114

A sensitive electrochemical sensor was designed for acetyl salicylic acid detection using graphene modified Screen Printed Electrodes. The electrochemical response of the sensor with graphene was improved compared to Screen Printed Electrodes without... Read More about Pharmaceutical electrochemistry: the electrochemical detection of aspirin utilising screen printed graphene electrodes as sensors platforms..

Electrochemical oxidation of acetyl salicylic acid and its voltammetric sensing in real samples at a sensitive edge plane pyrolytic graphite electrode modified with graphene. (2014)
Journal Article
KRUANETR, S., POLLARD, P., FERNANDEZ, C. and PRABHU, R. 2014. Electrochemical oxidation of acetyl salicylic acid and its voltammetric sensing in real samples at a sensitive edge plane pyrolytic graphite electrode modified with graphene. International journal of electrochemical science [online], 9(10), pages 5699-5711. Available from: https://doi.org/10.1016/S1452-3981(23)08199-3

We present in this manuscript for the first time the electrochemical oxidation of acetyl salicylic acid and its voltammetric sensing in real samples at a sensitive edge plane pyrolitic graphite electrode (EPPGE) modified with graphene. The electroche... Read More about Electrochemical oxidation of acetyl salicylic acid and its voltammetric sensing in real samples at a sensitive edge plane pyrolytic graphite electrode modified with graphene..

Mathematical modelling of quantum yield enhancements of methyl orange photooxidation in aqueous TiO2 suspensions under controlled periodic UV LED illumination. (2014)
Journal Article
TOKODE, O., PRABHU, R., LAWTON, L.A. and ROBERTSON, P.K.J. 2014. Mathematical modelling of quantum yield enhancements of methyl orange photooxidation in aqueous TiO2 suspensions under controlled periodic UV LED illumination. Applied catalysis B: environmental [online], 156-157, pages 398-403. Available from: https://doi.org/10.1016/j.apcatb.2014.03.046

Quantum yields of the photocatalytic degradation of methyl orange under controlled periodic illumination (CPI) have been modelled using existing models. A modified Langmuir-Hinshelwood (L-H) rate equation was used to predict the degradation reaction... Read More about Mathematical modelling of quantum yield enhancements of methyl orange photooxidation in aqueous TiO2 suspensions under controlled periodic UV LED illumination..

The effect of pH on the photonic efficiency of the destruction of methyl orange under controlled periodic illumination with UV-LED sources. (2014)
Journal Article
TOKODE, O., PRABHU, R., LAWTON, L.A. and ROBERTSON, P.K.J. 2014. The effect of pH on the photonic efficiency of the destruction of methyl orange under controlled periodic illumination with UV-LED sources. Chemical engineering journal [online], 246, pages 337-342. Available from: https://doi.org/10.1016/j.cej.2014.03.002

The nature of photon interaction and reaction pH can have significant impacts on semiconductor photocatalysis. This paper describes the effect of pH on the photonic efficiency of photocatalytic reactions in the aqueous phase using TiO2 catalysts. The... Read More about The effect of pH on the photonic efficiency of the destruction of methyl orange under controlled periodic illumination with UV-LED sources..

Investigation of novel methods to remove the cyanotoxin, Cylindrospermopsin, from drinking water. (2013)
Thesis
CHANDU, V.C.P 2013. Investigation of novel methods to remove the cyanotoxin, Cylindrospermopsin, from drinking water. Robert Gordon University, PhD thesis.

The widespread distribution of cyanobacteria and their toxic effects on humans has become a major concern for researchers. Cyanobacteria are a group of oxygenic phototrophic bacteria that exhibit an enormous diversity in shapes and arrangements and o... Read More about Investigation of novel methods to remove the cyanotoxin, Cylindrospermopsin, from drinking water..

Monitoring and regulating cyanobacterial metabolites (microcystins and geosmin) in aquatic systems. (2012)
Thesis
PESTANA, C.J. 2012. Monitoring and regulating cyanobacterial metabolites (microcystins and geosmin) in aquatic systems. Robert Gordon University, PhD thesis.

Cyanobacterial secondary metabolites can cause serious harm to animals and humans (cyanotoxins) and can have a major financial impact on the potable water and aquaculture industries (taste and odour compounds). Understanding the factors that affect c... Read More about Monitoring and regulating cyanobacterial metabolites (microcystins and geosmin) in aquatic systems..

Effect of controlled periodic-based illumination on the photonic efficiency of photocatalytic degradation of methyl orange. (2012)
Journal Article
TOKODE, O.I., PRABHU, R., LAWTON, L.A. and ROBERTSON, P.K.J. 2012. Effect of controlled periodic-based illumination on the photonic efficiency of photocatalytic degradation of methyl orange. Journal of catalysis [online], 290, pages 138-142. Available from: https://doi.org/10.1016/j.jcat.2012.03.011

The use of controlled periodic illumination with UV LEDs for enhancing photonic efficiency of photocatalytic decomposition processes in water has been investigated using methyl orange as a model compound. The impact of the length of light and dark ti... Read More about Effect of controlled periodic-based illumination on the photonic efficiency of photocatalytic degradation of methyl orange..