02448nas a2200253   4500008004100000245012800041210006900169260000800238300000800246490000700254520159700261653001601858653002301874653001201897653001901909100002201928700001601950700001901966700001901985700001802004700001802022700002402040856013002064       2022                        eng d00aSpinel magnesium ferrite (MgFe2O4): a glycine-assisted colloidal combustion and its potentiality in gas-sensing application0 aSpinel magnesium ferrite MgFe2O4 a glycineassisted colloidal com  cSEP  a3610 v103 a<p>
	Herein, we describe the facile synthesis of spinel MgFe2O4 ferrite and its potential use as a gas sensor using a straightforward and reliable sol-gel approach, i.e., the glycine-assisted auto-combustion route. The novelty in obtaining the sensing material via the auto-combustion route is its inherent simplicity and capability to produce the material at an industry scale. The said cost-effective process makes use of simple metal salts (Mg and Fe-nitrates) and glycine in an aqueous solution, which leads to the formation of spinel MgFe2O4 ferrite. A single-phase crystallinity with crystallite sizes ranging between 36 and 41 nm was observed for the synthesized materials using the X-ray diffraction (XRD) technique. The porous morphologies of the synthesized materials caused by auto-ignition during the combustion process were validated by the microscopic investigations. The EDS analysis confirmed the constituted elements such as Mg, Fe, and O, without any impurity peaks. The gas-sensing ability of the synthesized ferrites was examined to detect various reducing gases such as LPG, ethanol, acetone, and ammonia. The ferrite showed the highest response (&gt;80%) toward LPG with the response and recovery times of 15 s and 23 s, respectively. Though the sensor responded low toward ammonia (similar to 30%), its response and recovery times were very quick, i.e., 7 s and 9 s, respectively. The present investigation revealed that the synthesized ferrite materials are good candidates for fabricating high-performance sensors for reducing gases in real-world applications.</p>
10aGas sensors10aglycine combustion10aMgFe2O410areducing gases1 aNadargi, Digambar1 aUmar, Ahmad1 aNadargi, Jyoti1 aPatil, Jayvant1 aMulla, Imtiaz1 aAkbar, Sheikh1 aSuryavanshi, Sharad  uhttp://library.ncl.res.in/content/spinel-magnesium-ferrite-mgfe2o4-glycine-assisted-colloidal-combustion-and-its-potentiality01924nas a2200265   4500008004100000022001400041245009300055210006900148260000800217300001400225490000700239520108500246653001701331653001701348653002101365653001901386100001901405700001701424700002201441700001901463700001801482700001701500700002401517856011701541       2022                        eng d  a1380-222400aSponge microflowers of NiCo2O4: a versatile material for high performance supercapacitor0 aSponge microflowers of NiCo2O4 a versatile material for high per  cAUG  a1239-12520 v293 a<p>
	We report the development of well optimised NiCo2O4 microflowers for high performance supercapacitor application. The efforts were made to optimise the electrode material by tuning the synthetic as well as electrolyte concentration parameters such as (i) hydrothermal reaction temperature, (ii) hydrothermal reaction time, (iii) sintering temperature, and (iv) electrolyte concentration. The physico-chemical and supercapacitive properties were analysed using TGA, XRD, SEM/TEM/HRTEM, XPS, BET, and electrochemical measurements. The well optimised electrode material was obtained at 150 degrees C hydrothermal reaction temperature, 12 h of hydrothermal reaction time, 300 degrees C sintering temperature, and 3 M KOH electrolyte concentration. The optimised sample displayed high specific -capacitance (1478 F/g), -energy density (16.5 Wh/kg), and -power density (248 W/kg). The specific capacitance can be retained to 97.61% after 1000 cycles. The developed NiCo2O4 microflower structures are well optimised and offer great promise for future industrial applications.</p>
10ahydrothermal10aMicroflowers10aNickel cobaltite10asupercapacitor1 aGhadage, Ambar1 aKodam, Pavan1 aNadargi, Digambar1 aShinde, K., P.1 aMulla, Imtiaz1 aPark, J., S.1 aSuryavanshi, Sharad  uhttp://library.ncl.res.in/content/sponge-microflowers-nico2o4-versatile-material-high-performance-supercapacitor