K. Venkatesh

K. Venkatesh
Jyothy Institute of Technology, Bengaluru, India · Centre for Incubation Innovation Research and Consultancy (CIIRC)

Doctorate of Philosophy

About

68
Publications
42,110
Reads
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1,171
Citations
Citations since 2017
43 Research Items
1073 Citations
20172018201920202021202220230100200300
20172018201920202021202220230100200300
20172018201920202021202220230100200300
20172018201920202021202220230100200300
Additional affiliations
July 2007 - August 2015
Jain University
Position
  • Managing Director

Publications

Publications (68)
Article
In this paper, the multifunctional, electron-rich, unique structured vanadium pentoxide-carbon sphere (V2O5-CS) composite was used as a catalyst for energy storage devices such as iron-based redox flow batteries (IRFBs) and supercapacitors. The V2O5-CS composite was synthesized using a single-step hydrothermal method and it was found to have a nano...
Article
Single step hydrothermally synthesized the stable cerium oxide (CeO2) nanorods decorated on layered surface of graphene oxide (GO) flakes. The crystal surface structure of novel CeO2/GO nanocomposites were analysed by scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX), X-ray diffraction (XRD), and Brunauer–Emmett–Teller (BET...
Article
Grid level energy storage systems have gravitated towards redox flow batteries due to their great performance, economic factors and supercapacitors have gained prime importance as they bridge the void between batteries and capacitors. The electrochemical behavior of the Iron redox flow battery is directly co-related to the positive electrode. Herei...
Article
Nanocomposites (NC-X) of Ni/Co-MOFs with varying weight % of functionalized multiwalled carbon nanotubes (F-MWCNTs) were synthesized by solvothermal method. Physicochemical properties of NC-X were analyzed by different analytical techniques. Further, electrochemical studies were made to comprehend the effect of weight % of F-MWCNTs in the nanocompo...
Article
Composite of dextrose derived oxygen rich carbon spheres and graphene oxide, synthesized using a cost effective and easy hydrothermal process was used as an active material in two of the trending and promising energy storage devices. The surface morphology and properties of the composite was studied using scanning electron microscope (SEM), X-ray d...
Article
We report a novel carbon material obtained from low-density fibrous fur-like biowaste Asclepias syriaca (milkweed) floss for use as low-cost and efficient electrodes in electrochemical double layer capacitors (EDLCs).
Article
Carbonization of variety of biomass materials and activation using metal salts, oxides carbonates etc., aids in increasing its specific surface area (SSA) and activation site density utilized in many applications. Here, Musa acuminata (banana) stem has been carbonized at 450 °C and activated using five different porogens like KOH (C-1), ZnCl2 (C-2)...
Article
Full-text available
3D chitosan scaffolds treated with alkali showed enhanced mechanical properties and stability in aqueous conditions. Chitosan is a preferred polymer for biomedical applications due to its antimicrobial, antioxidant and wound healing properties. Chitosan has been made into films, fibers, micro and nanoparticles and electrospun membranes for tissue e...
Article
Approximately 25 million tons of stems of Cajanus cajan are available as residue after harvesting the seeds. Currently, most of the stems are burnt or buried and do not have any major applications. The exploitation such unconventional agricultural waste to get novel bio-char and its chemical activation for efficient construction of symmetric superc...
Article
Development of biomass derived activated carbons for potential applications in various fields including gas separation, energy storage, and wastewater treatment has received increasing attention due to greater emphasis on sustainable development in recent times. In the present study, activated carbons are obtained from the seeds of Delonix regia pl...
Article
The present study is being undertaken to investigate the temperature dependent structural and morphological changes in aurichalcite precursor during its transformation into zinc copper mixed oxide. It involves the preparation of aurichalcite precursor using homogeneous precipitation method by urea hydrolysis and calcination of aurichalcite to obtai...
Article
In this paper, the performance of Fe-based redox flow batteries (IRFBs) was dramatically improved by coating N-doped carbon spheres (NDCS) on the graphite felt electrodes. NDCS was synthesized by the single-step hydrothermal method using dextrose and ammonia as a precursor and coated over graphite felt electrodes by electrostatic spraying. The weig...
Article
Full-text available
In this study, we have compared the performance of a bare carbon paste electrode (BCPE) against the [email protected]2 nanocomposite modified carbon paste electrode (MCPE) in the electrochemical determination of dopamine (DA). Chemical and structural features of the [email protected]2 nanocomposites were characterized using scanning electron micros...
Article
Full-text available
In this study, we demonstrate that coating a layer of graphene oxide (GO) onto graphite felts (GF) by electrostatic spraying can substantially increase the performance of all-iron redox flow batteries (IRFBs). Graphite felts are extensively used as electrodes but they do not have the desired electrochemical properties. GO has good electrochemical f...
Article
Microwave treated Bermuda grass (MW-BG) has been developed and tested for the removal of a toxic cationic dye, methylene blue (MB). The dye removal has been investigated for both adsorption and photocatalytic degradation. The microscopic characterizations reveal that MW-BG’s flat morphology with a smooth surface aids the uptake of the dye contamina...
Preprint
Full-text available
In this paper, the performance of Fe based redox flow batteries (IRFBs) was dramatically improved by coating N-doped carbon spheres (NDCS) on the graphite felt electrodes. NDCS was synthesized by the single-step hydrothermal method using dextrose and ammonia as a precursor and coated over a graphite felt electrode by electrostatic spraying. The wei...
Article
Copper oxide (CuO), being a transition metal oxide, finds numerous applications in current science and technology. To tailor the different properties of CuO to meet the requirements of intended applications, recent research is focused on the exploration and utilization of various synthesis routes. Hence, there is huge scope for research in the rapi...
Article
In the Arctic, the impacts of global warming are strong and the rate of ice melting is increasingly accelerating due to warmer temperatures relative to snow accumulation. With recent advances in unmanned air vehicle (UAV) technology and image processing techniques, field measurements for cryosphere studies have gained significance today. In the cur...
Article
Iron flow batteries are having tremendous attraction because of their economic feasibility and environmentally favorable electrolytes. Electrode and electrolyte used in iron-based redox flow batteries (IRFBs) have a vital role in the performances of electrochemical energy storage devices. Therefore designing a suitable electrode and optimization of...
Article
Natural polymers such as proteins and polysaccharides are of great demand in packaging and medical applications. Horse gram (Macrotyloma uniflorum) is a good source of protein and possess excellent antioxidant properties. The present study investigates the development and potential applications of transparent and water-resistant horse gram protein-...
Article
For large-scale energy storage, iron-based flow batteries (IRFBs) have been considered as a better choice because of their low-cost and use of environmentally friendly iron-based salts. The development of a IRFBs has been limited by the sluggish kinetics of the reaction, especially at the positive electrode during charging. Therefore, it is very im...
Article
In this work, we have coated MnO2@CeO2 composites onto graphite felts (GF) by electrostatic spraying leading to substantially improved electrochemical performance characteristics of iron redox flow batteries. GF are extensively used as electrodes but they do not have the desired electrochemical properties. MnO2@CeO2 composites have novel electrocat...
Article
Full-text available
Metal-organic framework (MOF) of Ni-MOF, Co-MOF, and Ni/Co-MOF were synthesized by a facile hydrothermal method using Trimesic acid as structure directing linker. The physico-chemical properties of the synthesized MOFs were characterized by P-XRD (powder X-ray diffraction), FT-IR (fourier transform infrared spectroscopy), SEM-EDS (scanning electron...
Article
TiO2 nano particles (NPs) were synthesized by precipitation using high purity of TiCl4 and the surface was modified by hydrothermal treatment. The NPs were characterized using X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Analysis (EDX), Transmission electron microscopy (TEM), Thermo-Gravimetric Analysis (TGA)...
Article
Full-text available
This work presents the thermal decomposition of dicopper chloride trihydroxide [Cu2(OH)3Cl] into a stable phase of copper oxide under nitrogen atmosphere. A dedicated single-mode sealed-vessel microwave reactor is used to synthesize the precursor, Cu2(OH)3Cl. Based on thermogravimetric (TG) curve, Cu2(OH)3Cl is subjected to pyrolysis at different t...
Article
Full-text available
We demonstrate a simple approach of using highly alkaline starch solutions to obtain films with high flexibility and improved water resistance. Extensive studies have been done to develop films from starch, primarily for food applications. However, films developed from starch are brittle and generally chemical modifications or plasticizers are used...
Article
Lignocellulosic agricultural residues are unavoidably generated and are mostly disposed by burning or burying which causes significant pollution. Using these materials for value added applications can contribute to a greener environment. In this work, two such agricultural residues namely, rice husk (RH) and groundnut shell (GNS) were used without...
Article
In this research, tulsi (wild type) stalks were treated with NaOH to obtain natural cellulosic fibers. X-ray diffractions showed typical cellulose diffraction peak at 22.7°. The fibers had a tensile strength of 445 MPa, higher than fibers obtained from other agricultural residues. The fibers also displayed good thermal stability up to 300℃ making i...
Article
Natural cellulose fibers were extracted from a fast growing perennial grass Eulaliopsis binata (commonly known as Sabai)and characterized for their structure and properties. The untreated sabai grass has been used as reinforcement for polypropylene composites and properties of the composites have been investigated. Although the composition of the s...
Article
Increasing constraints on the use of concrete and need to promote energy efficient green buildings are leading the research for new materials for civil engineering and architectural applications. Biobased renewable materials such as bamboo and coir are being studied for both indoor and outdoor applications. Utilizing agricultural residues and co-pr...
Chapter
Anthropogenic emission of greenhouse gases, particularly carbon dioxide, is believed to be the main cause for current climate change. This has compelled the humankind to explore numerous technological options to reduce carbon dioxide emission. Among these, the carbon dioxide capture and storage technology is the only cost-effective option to reduce...
Article
Treating starch‐chitosan films with mild alkali makes them insoluble in water and common solvents, required for converting chitosan‐starch blends into value added products. Chitosan has good antibacterial property but has poor resistance to aqueous conditions. Although chemical and physical modification helps to improve properties of chitosan and s...
Article
Potassium hydroxide (KOH) modified network-type carbon spheres (CSs) with abundant oxygen-rich groups were synthesized using a simple hydrothermal carbonization (HTC) of glucose precursor and utilized for the adsorptive removal of cadmium(II) heavy metal and congo red (CR) dye as well as photocatalytic degradation of CR. Characterizations on the sa...
Article
Full-text available
The synthesis of a multifunctional composite using Fe2O3 and ZnO endowed with antioxidant and antibacterial properties for the adsorption of chromium(VI) ions was reported. Typical approaches of eliminating metal ions from wastewater focus on removing only the contaminants. In this research, a composite was developed that is not only highly efficie...
Article
Full-text available
Magnesium–aluminum-layered double hydroxides (LDH) and proteins extracted from bael or bilva oil meal (BP) were used to form composites (LDH-BP) by a simple co-precipitation method. The synthesized composites were utilized to remove lead ions from contaminated water and to study the antimicrobial and antioxidant activities. BPs have inherent antimi...
Article
Full-text available
The presence of contaminants in potable water is a cause of worldwide concern. In particular, the presence of metals such as arsenic, lead, cadmium, mercury, chromium can affect human health. There is thus a need for advanced techniques of water decontamination. Adsorbents based on cerium dioxide (CeO2), also named ‘ceria,’ have been used to remove...
Article
Full-text available
The development of cost-effective and eco-friendly alternatives of energy storage systems is needed to solve the actual energy crisis. Although technologies such as flywheels, supercapacitors, pumped hydropower and compressed air are efficient, they have shortcomings because they require long planning horizons to be cost-effective. Renewable energy...
Article
Full-text available
�-cellulose obtained from teakwood sawdust using TAPPI method was used for the capture of toxic cationicdyes such as methylene blue (MB) and malachite green (MG). Characterizations were carried out by usingFourier Transformed infra-red spectroscopy, X-ray diffraction, scanning electron Microscopy, thermogravimetricanalysis and Brunauer-Emmet-Teller...
Article
In Carbon dioxide capture and storage (CCS) technology, adsorption of CO2 on solid adsorbents has been widely investigated as a means of an alternative to benchmark absorption technology, which is having many formidable problems. The various classes of solid adsorbents that have been investigated for CO2 capture include zeolites, carbon based adsor...
Article
An amperometric ammonium biosensor based on alanine dehydrogenase of Bacillus subtilis and functionalized multiwalled carbonnanotubes was developed by using screen printed electrodes. The output current of the biosensor was increased around 2.4 times at 100 mM NH4⁺ after the addition of functionalized multiwalled carbonnanotubes at the concentratio...
Article
Full-text available
This work concerns the investigation of potential candidature of cellulose and chitosan–based nano–sized materials for heavy metals and dyes removal. Cellulose and chitosan being the first two abundant biopolymers in nature offer wide opportunities to be utilized for high–end applications such as water purification. The nano–sized cellulose and nan...
Article
Full-text available
Layered double hydroxides (LDH) derived mixed metal oxides (MMO) are considered as promising solid sorbents for CO2 capture in the temperatures range of 350–500 °C. Accordingly, they find potential applications in the sorption enhanced water–gas shift (SEWGS) process and in removal of CO2 from hot flue gas/syngas. Numerous strategies have been explo...
Conference Paper
Full-text available
In this work, Rapid Prototyping (RP) parts of Acrylonitrile-Butadien-Styrene (ABS) of different geometries fabricated by Fused Deposition Modeling (FDM) technique have been successfully electroplated with copper and nickel respectively after subjecting to conventional as well as a novel surface preparation methods. The assessment of mechanical prop...
Poster
Full-text available
Climate change due to anthropogenic emission of greenhouse gases (GHGs) is a major global issue at the present times. The carbon dioxide capture and storage (CCS) technology is considered as a mid-term commercially viable GHG mitigation strategy. In recent times, adsorption of CO2 on solid sorbents has attracted significant attention due many poten...
Article
In recent years, a great deal of interest has been shown for high-temperature adsorption of CO2 on hydrotalcite-like compounds (HTlcs). Numerous efforts have been undertaken to enhance the CO2 capture property of HTlcs, including alkali-metal impregnation, use of support materials, and modification of chemical composition. The present work demonstr...
Article
In recent times, synthesis of valuable carbon materials via hydrothermal carbonization technique using biomass precursors for various applications has received revived interest in view of energy efficiency and sustainability. In present work, low-cost carbon material was synthesized using Mesua ferrea L. seed cake through hydrothermal carbonization...
Article
Purpose – The paper aims to address the formulation of zirconium and oxalicum additive-based lubricants for use in slide ways to meet the demands of high positioning exactness based on reduction in stick–slip and coefficient of friction over a wide speed range and compares the same with commercially available lubricant. Design/methodology/approach...
Article
Commonly used fuels such as petrol and diesel have definite energy values and the extent of energy retrieval is limited due to the operating principle of the IC engine. Water upon electrolysis dissociates into hydrogen and oxygen, both the gases together in a common duct called as oxyhydrogen is used to increase the overall energy content of the pr...
Article
Full-text available
Sorption Enhanced Reaction (SER) concepts for H2 production and removal of CO2 from hot flue gas/syngas are two emerging areas of CCS technology. In recent years, these applications are receiving increased research interest due to their potential energy efficiency and cost-effectiveness. The separation technologies such as absorption, membrane sepa...
Article
The tribological behavior of the sliding surfaces is dependent on the frictional heating. Surface and near surface temperatures may become high enough to cause changes in structure and properties of the sliding surfaces. It can also cause oxidation and even melting. Wear and frictional behavior of materials above ambient (25°C) conditions would bec...
Article
Addition of measured amounts of fillers into a polymer matrix is expected to improve the desired properties of the composites. Also the ease of processability of the matrix and reinforcement is always desired. Use of powder fillers in the polymer matrix at ambient conditions would make the processing much easier. This will help in in situ applicati...
Article
Full-text available
This paper describes the synergistic application of rapid prototyping and metal plating technologies for development of micro air vehicles (MAV) with high strength-to-weight characteristic. Stereolithography and fused deposition techniques are employed to fabricate complex thermoplastic MAV prototypes with significant time-compression in production...
Article
Various models have been proposed to estimate the bulk temperatures along the axis of a pin wearing against a disc in a pin-on-disc tribometer. These have been generally addressing the estimation of temperature for monolithic materials. The current investigation addresses the estimation of the bulk temperatures for a composite material using the ru...
Article
With advances in machining technology, the requirements for linear guide ways and industrial lubricants are increasing, especially for machine tools which have to meet various demands such as high positioning exactness, low stick-slip coefficient of friction over a wide range of speed. Study of friction and wear of lubricated surfaces plays a promi...
Article
Use of composite material is increasing due to economical processing of complicated shapes in large quantities. Addition of fiber/particulates improves the composite strength. In the current study, the tribological characterization of polymer based particulate composites which are processed at room temperature are investigated. The friction and wea...
Article
A study on the tribological characterization of metal and ceramic powder filled styrene based composites processed at room temperature was carried out. The friction coefficient (COF) increased with the fillers and the temperature of the pin was highest with the copper based composite. Presence of metal and ceramic articulates affected the tribologi...
Article
Full-text available
Coolants are widely used in industries for metal cutting operations. Though there are varieties of coolants available, the most widely used are water-soluble coolants because of their low cost and better heat dissipation compared to straight cutting oils. In the present investigation, amongst the various causes, which deteriorate the coolant, the r...
Article
When a metal is surface ground the roughness generated is the summation of a function of the wheel roughness and the roughness due to wheel attrition and damage to the workpiece. We identify this function here as a maximum em,elope profile, which is fractal within certain cut off wavelengths determined by the dressing conditions of the wheel. Estim...
Article
Assuming the grinding wheel surface to be fractal in nature, the maximum envelope profile of the wheel and contact deflections are estimated over a range of length scales. This gives an estimate of the `no wear' roughness of a surface ground metal. Four test materials, aluminum, copper, titanium, and steel are surface ground and their surface power...
Article
The roughness of metallic surfaces generated by machining depends on the intended intervention by the tool and the inadvertent consequences determined by the response of metals. The roughness generated in four different metals by grinding is studied using the power spectrum method. It was found that the level of power is determined by the intended...
Article
Assuming the grinding wheel surface to be fractal in nature the maximum envelope profile of the wheel and contact deflections are estimated over a range of length scales. This gives an estimate of the `no wear' roughness of a surface ground material. Four test materials, aluminium, copper, titanium and steel are surface ground and their surface pow...
Article
The machining of copper surface generates a topography which in the direction normal to the tool travel is a reflection of the tool edge topography and is caused by plastic ploughing even at microscopic scales. The topography in the direction of tool travel is more Brownian and is due to fracture caused by sliding wear. (C) 1998 Elsevier Science S....
Article
This article presents an overview of the technological aspects of indentation experiments at nanometre levels. The prominent differences in material response to nanoindentation, compared to the response to macroindentation, are identified and the influence of several physical phenomena which cause the observed differences are examined. Various appl...

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Project
I am right now included with Creating renewable asset based complete biodegradable composite and developing bio mimetic materials, adding value to agricultural and bio-fuel co-products by developing high value bio-products and composites for industrial applications. My research also stimulates the interest in utilizing agricultural waste for composite materials thus introducing a industrial value that could benefit farmers.