D. Ravi Shankaran
University of Madras
Colloidal goldQuinhydrone electrodeConjugated systemPharmacokineticsSurface modificationDetection limitAbsorption spectroscopyStandard hydrogen electrodeTargeted drug deliveryNanomaterialsAmperometryNuclear chemistryTransmission electron microscopyAdsorptionNanomedicineInfrared spectroscopyNanoparticleFourier transform infrared spectroscopyQuantum yieldNanotechnologyElectrodeX-ray photoelectron spectroscopyInorganic chemistryChemistryOverpotentialMaterials scienceScanning electron microscopeMethyl violetIon selective electrodeBiocompatibilityEthylene glycolCyclic voltammetrySodium hydroxideBiopolymerBrilliant greenCysteineCelluloseDrug deliveryDrugProstate cancerHydrazineTrisodium citrateVinyl alcoholDocetaxelCobalt hexacyanoferrateChemical treatmentAscorbic acidGraphite electrodeSpectroscopyElectrocatalystRaman spectroscopyReference electrodeChemical engineeringCrystallinityPalladium-hydrogen electrodeCancer researchSulfurPEG ratioCopperRedoxWorking electrodeOrange (colour)FluorescencePortable water purificationReproducibility
11Publications
9H-index
326Citations
Publications 11
Newest
#1S. Thambiraj (University of Madras)H-Index: 6
#2R. VijayalakshmiH-Index: 1
Last. D. Ravi Shankaran (University of Madras)H-Index: 9
view all 3 authors...
Nanoformulation based drug delivery is one of the most important research areas in the field of nanomedicine, which provides promising alternatives to the limitations of conventional chemotherapy. Nano drug delivery enables improved pharmacokinetic profile, bioavailability and therapeutic efficiency compared to the regular chemotherapeutic drugs. Herein, we have established a simple method for the synthesis of docetaxel (Dtx) encapsulated poly (ethylene glycol) (PEG) functionalized gold nanopart...
4 CitationsSource
#1S. Thambiraj (University of Madras)H-Index: 6
#2S. ShruthiH-Index: 1
Last. D. Ravi Shankaran (University of Madras)H-Index: 9
view all 4 authors...
Abstract The effective use of the gold nanoparticle (AuNPs) conjugated drugs for targeted drug delivery applications is one of the most promising research areas in the field of cancer. Herein, we aimed to establish a nano drug conjugated with docetaxel as a possible therapy option. Gold nanoparticles were synthesized by chemical reduction method. This is followed by the conjugation with an anticancer drug, docetaxel (Dtx) by a non-covalent method and folic acid (FA) was conjugated by a covalent ...
11 CitationsSource
#1S. Thambiraj (University of Madras)H-Index: 6
#2G. Sharmila (Bharathiar University)H-Index: 1
Last. D. Ravi Shankaran (University of Madras)H-Index: 9
view all 3 authors...
Abstract We developed a green adsorbent material from orange fruit peel for the removal of dyes from polluted water. The conversion of orange peels into green adsorbent was done by direct sunlight without using any chemical treatment. The adsorption study was carried with three different dyes namely, brilliant green, methyl violet, and solochrome black. Different concentrations of the dye solutions were prepared and evaluated for adsorption characteristics. The properties of the orange fruit pee...
5 CitationsSource
#1S. Thambiraj (University of Madras)H-Index: 6
#2Soundararajan Hema (University of Madras)H-Index: 3
Last. D. Ravi Shankaran (University of Madras)H-Index: 9
view all 3 authors...
Abstract Gold nanoparticles (AuNPs) have been receiving great attention over the years due to their unique optical, electrical and biological properties. The functionalization of AuNPs is an important research interest owing to its potential application in various areas including biomedical, defense, food and environmental. Herein, we demonstrate a simple and effective method for the synthesis of functionalized AuNPs. Gold nanoparticles were synthesized by chemical reduction method using trisodi...
10 CitationsSource
#1S. Thambiraj (University of Madras)H-Index: 6
#2D. Ravi Shankaran (University of Madras)H-Index: 9
Abstract We aimed to develop a simple and low-cost method for the production of high-performance cellulose nanomaterials from renewable and sustainable resources. Here, cellulose microcrystals (CMCs) were prepared by controlled acidic and basic hydrolysis of cotton from textile industry wastes. The resulted CMCs were further converted into cellulose nanocrystals (CNCs) with high crystallinity by acidic hydrolysis. The physicochemical characteristics and morphological feature of CMCs and CNCs wer...
69 CitationsSource
#1S. ThambirajH-Index: 6
#2D. Ravi Shankaran (University of Madras)H-Index: 9
Abstract Carbon quantum dots (CQDs) have great potential due to its advantageous characteristics of highly fluorescent nature and good stability. In this study, we aimed to develop a simple and efficient method for the green synthesis of fluorescent CQDs from sugarcane bagasse, a renewable and sustainable resource. The process involves the top down approach of chemical oxidation followed by exfoliation of sugarcane carbon. The synthesized CQDs was characterized by UV–vis absorption spectroscopy,...
97 CitationsSource
#1D. Ravi Shankaran (University of Madras)H-Index: 9
#2S. Sriman Narayanan (University of Madras)H-Index: 27
Abstract A chemically modified amperometric sensor was constructed by mechanically immobilizing cobalt hexacyanoferrate onto the surface of a paraffin impregnated graphite electrode (PIGE). The cyclic voltammogram of the electrode exhibited two reversible redox peaks corresponding to Co 2+ /Co 3+ and Fe(CN) 6 4− /Fe(CN) 6 3− reactions. Thiosulphate was found to undergo electrocatalytic oxidation at a reduced overpotential with good sensitivity in a wider pH range at the modified electrode. The s...
30 CitationsSource
#1D. Ravi Shankaran (University of Madras)H-Index: 9
#2S. Sriman Narayanan (University of Madras)H-Index: 27
A graphite electrode modified with cobalt hexacyanoferrate by mechanical immobilization was used for amperometric determination of hydrazine. The modified electrode exhibits good catalytic activity for the oxidation of hydrazine at a reduced overpotential with remarkable sensitivity. The modified electrode showed a linear response for hydrazine in the concentration range of 2.0 × 10–5 to 2.8 × 10–4 M. The detection limit was 9.8 × 10–6 M (S/N = 3). The proposed modified electrode was simple, sen...
18 CitationsSource
#1D. Ravi Shankaran (University of Madras)H-Index: 9
#2S. Sriman Narayanan (University of Madras)H-Index: 27
A newly modified electrode was prepared by mechanical immobilization of copper hexacyanoferrate (CuHCF) on a graphite electrode. The modified electrode was characterized by cyclic voltammetric experiments. The effect of different background electrolytes, pHs and scan rates on the electrochemical behaviour of the electrode has been evaluated. In NH4Cl two reversible redox peaks were observed. The first redox peak corresponding to Cu+/Cu2+ is observed only in this medium. The second redox peak cor...
43 CitationsSource
#1D. Ravi Shankaran (University of Madras)H-Index: 9
#2S. Sriman Narayanan (University of Madras)H-Index: 27
Abstract Copper hexacyanoferrate (CuHCF) modified graphite electrode prepared by mechanical immobilisation method has been used for the amperometric determination of sulphite, which can be extended for the determination of SO 2 in air after absorbing the pollutant in sodium hydroxide solution. This method is based upon the electrocatalytic oxidation of sulphite by the modified electrode. The pH of the medium for oxidation should be in the range of 3.5–8.0. The range of determination of SO 2 is f...
35 CitationsSource