ORCID Profile
0000-0001-7699-5698
Current Organisation
University Of Strathclyde
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Publisher: Elsevier BV
Date: 12-2021
Publisher: Springer Science and Business Media LLC
Date: 22-02-2017
DOI: 10.1038/SREP43133
Abstract: A new class of pyridyl benzimdazole based Ru complex decorated polyaniline assembly (PANI-Ru) was covalently grafted onto reduced graphene oxide sheets (rGO) via covalent functionalization approach. The covalent attachment of PANI-Ru with rGO was confirmed from XPS analysis and Raman spectroscopy. The chemical bonding between PANI-Ru and rGO induced the electron transfer from Ru complex to rGO via backbone of the conjugated PANI chain. The resultant hybrid metallopolymer assembly was successfully demonstrated as an electron donor in bulk heterojunction polymer solar cells (PSCs). A PSC device fabricated with rGO/PANI-Ru showed an utmost ~6 fold and 2 fold enhancement in open circuit potential ( V oc ) and short circuit current density ( J sc ) with respect to the standard device made with PANI-Ru ( i.e., without rGO) under the illumination of AM 1.5 G. The excellent electronic properties of rGO significantly improved the electron injection from PANI-Ru to PCBM and in turn the overall performance of the PSC device was enhanced. The ultrafast excited state charge separation and electron transfer role of rGO sheet in hybrid metallopolymer was confirmed from ultrafast spectroscopy measurements. This covalent modification of rGO with metallopolymer assembly may open a new strategy for the development of new hybrid nanomaterials for light harvesting applications.
Publisher: AIP Publishing
Date: 25-08-2015
DOI: 10.1063/1.4928286
Abstract: Herein, Cu2O spheres were prepared and encapsulated with reduced graphene oxide (rGO). The Cu2O–rGO–C3N4 composite covered the whole solar spectrum with significant absorption intensity. rGO wrapped Cu2O loading caused a red shift in the absorption with respect to considering the absorption of bare C3N4. The photoluminescence study confirms that rGO exploited as an electron transport layer at the interface of Cu2O and C3N4 heterojunction. Utmost, ∼2 fold synergistic effect was achieved with Cu2O–rGO–C3N4 for the photocatalytic reduction of 4-nitrophenol to 4-aminophenol in comparison with Cu2O–rGO and C3N4. The Cu2O–rGO–C3N4 photocatalyst was reused for four times without loss in its activity.
Publisher: Wiley
Date: 24-04-2019
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5NR00504C
Abstract: Herein we report a Cu 2 O–TiO 2 /rGO photocatalyst with phenomenal water splitting ability.
Publisher: Elsevier BV
Date: 10-2017
Publisher: Elsevier BV
Date: 04-2018
DOI: 10.1016/J.APNR.2017.12.013
Abstract: Nurse bedside handover quality is influenced by complex interactions related to the content, processes used and the work environment. Audit tools are seldom tested in 'real' settings. Examine the reliability, validity and usability of a quality improvement tool for audit of nurse bedside handover. Naturalistic, descriptive, mixed-methods. Six inpatient wards at a single large not-for-profit private health service in Victoria, Australia. Five nurse experts and 104 nurses involved in 199 change-of-shift bedside handovers. A focus group with experts and pilot test were used to examine content and face validity, and usability of the handover audit tool. The tool was examined for inter-rater reliability and usability using observation audits of handovers across six wards. Data were collected in 2013-2014. Two independent observers for 72 audits demonstrated acceptable inter-observer agreement for 27 (77%) items. Reliability was weak for items examining the handover environment. Seventeen items were not observed reflecting gaps in practices. Across 199 observation audits, gaps in nurse bedside handover practice most often related to process and environment, rather than content items. Usability was impacted by high observer burden, familiarity and non-specific illustrative behaviours. The reliability and validity of most items to audit handover content was acceptable. Gaps in practices for process and environment items were identified. Context specific exemplars and reducing the items used at each handover audit can enhance usability. Further research is needed to develop context specific exemplars and undertake additional reliability testing using a wide range of handover settings. CONTRIBUTION OF THE PAPER.
Publisher: American Scientific Publishers
Date: 06-2015
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C6CE02337A
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C6TA07685H
Abstract: Designing new materials for sustainable energy and environmental applications is one of the prime focuses in chemical science.
Publisher: American Chemical Society (ACS)
Date: 18-11-2016
Publisher: American Scientific Publishers
Date: 07-2015
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5RA03831F
Abstract: Visible light active 2-naphthol functionalized TiO 2 (TiO 2 -2-NAP) photocatalytic system is developed for the 100% reduction of Cr( vi ) in aqueous medium.
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5CP08041J
Abstract: Extending the absorption to the visible region by tuning the optical band-gap of semiconductors and preventing charge carrier recombination are important parameters to achieve a higher efficiency in the field of photocatalysis.
Publisher: Elsevier BV
Date: 03-2017
DOI: 10.1016/J.ULTSONCH.2016.03.005
Abstract: TiO
Publisher: Elsevier BV
Date: 10-2017
Publisher: Elsevier BV
Date: 06-2015
DOI: 10.1016/J.JHAZMAT.2015.02.071
Abstract: Diffused sunlight is found to be an effective light source for the efficient degradation and mineralization of organic pollutant (methyl orange as a probe) by sono-photocatalytic degradation using reduced graphene oxide (rGO) supported CuO-TiO2 photocatalyst. The prepared catalysts are characterized by XRD, XPS, UV-vis DRS, PL, photoelectrochemical, SEM-EDS and TEM. A 10 fold synergy is achieved for the first time by combining sonochemical and photocatalytic degradation under diffused sunlight. rGO loading augments the activity of bare CuO-TiO2 more than two fold. The ability of rGO in storing, transferring, and shuttling electrons at the heterojunction between TiO2 and CuO facilitates the separation of photogenerated electron-hole pairs, as evidenced by the photoluminescence results. The complete mineralization of MO and the by-products within a short span of time is confirmed by TOC analysis. Further, hydroxyl radical mediated degradation under diffused sunlight is confirmed by LC-MS. This system shows similar activity for the degradation of methylene blue and 4-chlorophenol indicating the versatility of the catalyst for the degradation of various pollutants. This investigation is likely to open new possibilities for the development of highly efficient diffused sunlight driven TiO2 based photocatalysts for the complete mineralization of organic contaminants.
Publisher: Elsevier BV
Date: 10-2017
Publisher: Wiley
Date: 17-10-2019
Abstract: A titanium carbide (Ti
Location: United Kingdom of Great Britain and Northern Ireland
Location: Saudi Arabia
Location: India
No related grants have been discovered for Vinoth Ramalingam.