01778nas a2200241 4500008004100000022001400041245014900055210006900204260007300273300001200346490000800358520084100366653002101207653001401228653003701242653002201279653002501301653001901326100002101345700001601366700002201382856013201404 2005 eng d a0378-775300aPreparation and characterization of composite electrodes of coconut-shell-based activated carbon and hydrous ruthenium oxide for supercapacitors0 aPreparation and characterization of composite electrodes of coco aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcFEB a198-2030 v1413 a

The relationship between the structure-specific capacitance (F g(-1)) of a composite electrode consisting of activated coconut-shell carbon and hydrous ruthenium oxide (RuOx(OH)(y)) has been evaluated by impregnating various amounts of RuOx(OH)(y) into activated carbon that is specially prepared with optimum pore-size distribution. The composite electrode shows an enhanced specific capacitance of 250 F g(-1) in 1 M H2SO4 with 9 wt.% ruthenium incorporated. Chemical and structural characterization of the composites reveals a homogeneous distribution of amorphous RuOx(OH)(y) throughout the porous network of the activated carbon. Electrochemical characterization indicates an almost linear dependence of capacitance on the amount of ruthenium owing to its pseudocapacitive nature. (C) 2004 Elsevier B.V. All rights reserved.

10aactivated carbon10aComposite10aElectrochemical characterization10apseudocapacitance10aspecific capacitance10asupercapacitor1 aDandekar, M., S.1 aArabale, G.1 aVijayamohanan, K. uhttps://library.ncl.res.in/content/preparation-and-characterization-composite-electrodes-coconut-shell-based-activated-carbon-002623nas a2200409 4500008004100000022001400041245012500055210006900180260000800249490000800257520131500265653002101580653002101601653001401622653001301636653002501649653002801674653002401702653002201726653001901748653001501767653002301782653001801805653002601823653001701849653001301866653002501879653003101904653002201935653002301957100002101980700001402001700002102015700002402036700002902060856012402089 2017 eng d a0926-337300aInfluence of carbon based supports on selectivity behavior of diols and propanol in Ru catalyzed glycerol hydrogenolysis0 aInfluence of carbon based supports on selectivity behavior of di cMAY0 v2043 a

Activated carbon (AC) and three graphite materials were studied as supports for Ru catalyzed glycerol hydrogenolysis to propanediols and 1-propanol. Structural characteristics of AC and graphite materials were found to greatly affect the reducibility and particle size of supported Ru and hence, the activity and product distribution in glycerol hydrogenolysis. XRD of graphite materials showed distinctly (002) plane having highly organized layered structure and the peak intensity decreased in the order of Ru/KS150 > Ru/HSAG100 > Ru/KS6 due to decrease in the graphite sheet thickness. In Raman, the intense D band in HSAG100 compared to that in KS6 and KS150 samples indicated its highly amorphous nature or mixed carbon hybridization. Glycerol conversion for Ru on AC was higher than that on graphite and among different graphites, it showed a descending activity order of Ru/KS6 > Ru/HSAG100 > Ru/KS150. The product distribution for AC and HSAG100 supported Ru was similar, giving 1-propanol (45%) alongwith 1,2-propanediol (1,2-PDO) (37%) and 1,3-propanediol (1,3-PDO) (9–11%). For graphite supports, availability of Ru although bigger in size (4–5 nm), would be higher on the surface than in case of AC which formed deep hydrogenolysis products like 1-, 2- propanol, ethanol etc.

10aactivated carbon10aAmorphous carbon10acatalysis10aGlycerol10aGlycerol conversions10aGlycerol hydrogenolysis10agraphite composites10aGraphite supports10aHydrogenolysis10aHydrolysis10alayered structures10aParticle size10aProduct distributions10aPropanediols10aPropanol10aSelectivity behavior10aStructural characteristics10aStructural effect10aStructural effects1 aMane, Rasika, B.1 aPatil, S.1 aShirai, Masayuki1 aRayalu, Sadhana, S.1 aRode, Chandrashekhar, V. uhttps://library.ncl.res.in/content/influence-carbon-based-supports-selectivity-behavior-diols-and-propanol-ru-catalyzed01551nas a2200229 4500008004100000022001300041245009800054210006900152300001200221490000700233520081200240653002101052653001501073653001301088653000801101653002001109100001501129700001901144700001501163700001701178856012601195 2018 eng d a1996419600aSynthesis of biomass waste derived activated carbon-NBR composites for automobile application0 aSynthesis of biomass waste derived activated carbonNBR composite a236-2430 v123 a

This paper reports on usability of activated carbon obtained from areca nut shell, coconut shell, and coconut leaves as a filler to prepare NBR based composite for automobile based application. The carbon was activated by phosphoric acid (H3PO4) as dehydrating agent. The stoichiometric ratio of biomass and phosphoric acid was found to be 3:1 for the batch size of 300 g. As compared to commercially available carbon filler, the activated carbon derived from biomass waste responded better to the petrol swelling test. Among three biomass waste sources, namely, areca nut shell, coconut shell, and coconut leaves, activated carbon derived from coconut shell was appeared to be the best for percent swelling and percent deviation in hardness. The results obtained are confirmed by proximate analysis.

10aactivated carbon10acomposites10ahardness10aNBR10aPhosphoric acid1 aJadhav, A.1 aMohanraj, G.T.1 aGokarn, A.1 aMayadevi, S. uhttps://library.ncl.res.in/content/synthesis-biomass-waste-derived-activated-carbon-nbr-composites-automobile-application01774nas a2200229 4500008004100000022001400041245008600055210006900141260000800210300001400218490000700232520102300239653002101262653001901283653002001302653001901322100002001341700002401361700001801385700002701403856011401430 2019 eng d a0019-452200aFerets diameter estimation of activated carbon for effluent treatment application0 aFerets diameter estimation of activated carbon for effluent trea cAUG a1067-10740 v963 a

In this paper, activated carbon was produced of by chemical activation with phosphoric acid of agricultural wastes such as Arecanut shell of 25 micronmeter at 400 degrees C by slow pyrolysis. The BET surface area and iodine number surface area is calculated and compared. The FTIR spectra show the presence of activated carbon. The TGA revealed, activated carbon is thermally stable at 480 degrees C. The SEM shows the incorporation of activated carbon particles leads to the systematic change in morphology of activated carbon. Surface area plot shows the details of morphological change caused by iodine number surface area. Ferets diameter is estimated to know circularity of the particle. Methylene blue number, acid adsorption value is calculated to know adsorption capacity of the carbon. Thus results proves selection of ferets diameter, activation temperature, and impregnation ratio is important in determining the quality of activated carbon obtained and its use in industrial waste water treatment.

10aactivated carbon10aArecanut shell10aPhosphoric acid10ateret diameter1 aJadhav, Abhijit1 aMohanraj, Govindraj1 aGokarn, Ashok1 aMayadevi, Susheeladevi uhttps://library.ncl.res.in/content/ferets-diameter-estimation-activated-carbon-effluent-treatment-application01943nas a2200241 4500008004100000022001400041245011600055210006900171260000800240300000800248490000800256520112400264653002101388653002101409653001301430653002901443653002301472653002001495100001901515700001801534700001801552856013101570 2021 eng d a0947-839600aSynthesis of graphene from activated carbon at liquid nitrogen temperature and its detailed structural analysis0 aSynthesis of graphene from activated carbon at liquid nitrogen t cMAY a3190 v1273 a

The present study deals with the synthesis of graphene using thermal quenching of pre-heated activated carbon (a-C) (1370 K for 3 h) at liquid nitrogen temperature and its detailed structural analysis using XRD, TEM, FTIR and Raman spectroscopy. The analysis of lattice parameters (L-a, L-c,L- and d) of constituent nanographitic domains using XRD shows restoration of graphene-like structure in the resultant product (a-CL). TEM image reveals porosity and partially crystallinity (from SAED) in a-C. While thin layers of graphene are observed in the TEM images of a-CL Deconvoluted Raman spectra have been used to investigate the evolution of crystalline behaviour of a-C with temperature in view of Ferrari and Robertson's three-stage model. The evolution of G peak and increase in I-D/I-G reveals restoration of crystallinity in a-CL. The development of the D peak indicates disordering of graphite but ordering of amorphous carbon. The reported method is technologically beneficial for graphene synthesis for large number of applications such as supercapacitors, H-2 storage, gas separation and purification.

10aactivated carbon10aAmorphous carbon10agraphene10aH-2 storage applications10aRaman spectroscopy10aSupercapacitors1 aSharma, Preeti1 aSharma, Geeta1 aPunia, Rajesh uhttps://library.ncl.res.in/content/synthesis-graphene-activated-carbon-liquid-nitrogen-temperature-and-its-detailed-structural02615nas a2200301 4500008004100000022001400041245014800055210006900203260000800272300001400280490000800294520158400302653002101886653001501907653002501922653001101947653001901958100002501977700002702002700002302029700002202052700002602074700002402100700002302124700001702147700002402164856012502188 2022 eng d a0306-731900aAdsorption of toxic Pb(II) on activated carbon derived from agriculture waste (Mahogany fruit shell): isotherm, kinetic and thermodynamic study0 aAdsorption of toxic PbII on activated carbon derived from agricu cDEC a8270-82860 v1023 a

An adsorbent, mahogany fruit shell activated carbon(MFSAC), was derived from environmental friendly raw material, i.e. agriculture waste and explored for bench scale adsorption of toxic Pb(II). A facile MFSAC material was synthesised using a chemical activation method using concentrated sulphuric acid as an impregnating (activating) reagent. So derived adsorbent material was characterised by FTIR, XRD, BET, SEM, EDAX, TGA and XPS techniques to know the properties and plausible adsorption mechanism. Bench scale adsorption of toxic Pb(II) and maximum adsorption capacity of MFSAC were exhibited through batch adsorption experiments. The effect of physico-chemical parameters such as pH (1-7), MFSAC amount (0.5-5.0 g L-1), Pb(II) concentration (200-1000 mgL(-1)), contact period (60-600 min) and orbital shaking speed (60-200 rpm) was studied for maximum removal of Pb(II) upto 99.70 +/- 0.17%. The experimental data follow the Langmuir adsorption isotherm with a maximum monolayer adsorption capacity 322.28 mg g(-1)and pseudo-second-order kinetic uptake rate. The thermodynamic and temperature study revealed that the adsorption process was spontaneous and endothermic in nature (Delta H-o = 43.37 kJ mole(-1), Delta S-o = 158.02 J mol(-1)K(-1)). Most importantly, the MFSAC adsorbent was successfully regenerated and reused with conspicuous performance up to five consecutive cycles. The bench-scale adsorption with simple synthesis route, good stability and remarkable regeneration capability makes the MFSAC as an encouraging adsorbent for wastewater treatment.

10aactivated carbon10aAdsorption10amahogany fruit shell10aPb(II)10asulphuric acid1 aPatil, Suryakant, A.1 aSuryawanshi, Umesh, P.1 aHarale, Namdev, S.1 aPatil, Sandip, K.1 aVadiyar, Madgonda, M.1 aLuwang, Meitram, N.1 aAnuse, Mansing, A.1 aKim, Jin, H.1 aKolekar, Sanjay, S. uhttps://library.ncl.res.in/content/adsorption-toxic-pbii-activated-carbon-derived-agriculture-waste-mahogany-fruit-shell02171nas a2200265 4500008004100000022001400041245014300055210006900198260000800267300001100275490000700286520125300293653002101546653001601567653001201583653001001595653001901605100002601624700002201650700003001672700002901702700002201731700002601753856012601779 2024 eng d a2352-152X00aFacile chemical synthesis of BaO:MgO nanorods for designing distinctive solid-state asymmetric supercapacitor device with activated carbon0 aFacile chemical synthesis of BaOMgO nanorods for designing disti cAPR a1107760 v843 a

The successive ionic layer adsorption and reaction (SILAR) technique was adapted to produce the interconnected complex network of BaO:MgO nanorods on a flexible stainless-steel (SS) substrate surface. The phase and surface morphology of the BaO:MgO electrode were examined from the X-ray diffraction and scanning electron microscopy measurements, respectively, which endowed electrochemical specific capacitance (SC) of 528.77 F/g at a 2 mV/s scan rate with great rate capability and cycling performance of 94.33 % over 5000 cyclic voltammetry cycles. Fabricated BaO:MgO//AC asymmetric solid-state supercapacitor device, using polyvinyl alcohol and potassium hydroxide gel as an electrolyte, demonstrated distinctive energy storage performance, i.e., a specific capacitance (SC) of 259.07 F/g with an energy density of 57.27 Wh/kg and a power density of 2.34 kW/kg at a current density of 4 mA/cm(2). The results demonstrated the facile method for synthesizing a spherical nanorod network of BaO:MgO and made them promising electrode materials for energy storage applications. The use of a solid-state supercapacitor device to illuminate an LED demonstrated the commercial feasibility of both the materials utilized and the design type.

10aactivated carbon10aASSD device10aBaO:MgO10aSILAR10asupercapacitor1 aBobade, Rushikesh, G.1 aDabke, Niteen, B.1 aShaikh, Shoyebmohamad, F.1 aLokhande, Balkrushna, J.1 aMane, Rajaram, S.1 aAmbare, Revanappa, C. uhttps://library.ncl.res.in/content/facile-chemical-synthesis-baomgo-nanorods-designing-distinctive-solid-state-asymmetric