02285nas a2200265   4500008004100000022001400041245008800055210006900143260000800212490000700220520133500227653003301562653001401595653001501609653003101624653003001655100003001685700003401715700002901749700003301778700003201811700002601843700003001869856012001899       2025                        eng d  a2192-650600aMechanochemical large-scale rapid synthesis of ultrapure sodium hexafluorophosphate0 aMechanochemical largescale rapid synthesis of ultrapure sodium h  cJUL0 v903 a<p>
	Among the sodium battery electrolytes, sodium hexafluorophosphate (NaPF6) exhibits superior conductivity, anodic stability, and stable cathode electrolyte interface compared to other electrolytes. Therefore, the synthesis of pure NaPF6 through a simple process is very important. Usually, NaPF6 is synthesized using HF. In our approach, NaPF6 is synthesized by grinding dry ammonium hexafluorophosphate (NH4PF6) and sodium metal. Sodium injects an electron into the ammonium ion, which results in the formation of ammonia and hydrogen. The gram scale synthesis is completed in about 30 min. Purification of the product is not needed. The product purity is confirmed by various spectroscopic and electrochemical techniques. Usually, NaPF6 comprises NaF, HF, and solvents as impurities that affect the performance of SIBs. It has been confirmed that the NaPF6 synthesized by our mechanochemical approach in the absence of solvent is devoid of impurities despite the absence of product purification step. Furthermore, the synthesis of pure NaPF6 (250 g) is demonstrated using a grinder used as household item in cooking Indian pancakes, which costs about 300 USD. The duration of the synthesis of 250 g pure NaPF6 is 1 h. The purity of this sample is comparable to that of NaPF6 (5 g) synthesized using mortar and pestle.</p>
10aammonium hexafluorophosphate10aBatteries10acarbonates10asodium hexafluorophosphate10asodium vanadium phosphate1 aSenthilkumaran, Marimuthu1 aJavaregowda, Bharathkumar, H.1 aRajendran, Prakash, Babu1 aBalasubramanian, Rajalakshmi1 aAjithkumar, Thalasseril, G.1 aRavindranathan, Sapna1 aKrishnamoorthy, Kothandam  uhttps://library.ncl.res.in/content/mechanochemical-large-scale-rapid-synthesis-ultrapure-sodium-hexafluorophosphate02600nas a2200217   4500008004100000022001400041245015500055210006900210260000800279300001600287490000700303520176900310100002802079700003102107700002502138700003002163700002102193700001902214700003002233856011902263       2026                        eng d  a2470-134300aMetal films from a single source and their application in nanoporous filtration synthesis, electromagnetic interference shielding, and electroadhesion0 aMetal films from a single source and their application in nanopo  cMAR  a14203-142110 v113 a<p>
	Electroless metal depositions are carried out by a series of reduction steps involving multiple metal ions to obtain a film on synthetic and natural substrates. Herein, we report the use of metal ions from a single element to deposit metal films on various substrates. In a typical metal deposition procedure, Pd2+ ions are anchored on a polycarbonate membrane with vertically aligned pores of 0.6 mu m, which was reduced to its nanoparticles by sodium borohydride. The Pd nanoparticle-modified membrane was then immersed in a Pd plating bath. The Pd2+ ions are reduced by the reducing agent present in the plating bath. The reaction is catalyzed by the Pd nanoparticles. The Pd-modified membrane with vertically aligned Pd tubes were used to convert p-nitrophenol to p-aminophenol, which is an important molecule in the production of acetaminophen. While filtering the reactants through the Pd tubes, due to increased collision between the reactants and the catalyst Pd tubes, 100% conversion is achieved within 5 min. On the contrary, the conversion is only 10% if the membrane is placed in a vessel comprising the reactants. Due to the versatile nature of the metal deposition procedure, nickel was deposited on cotton substrates by a similar procedure. The nickel film-coated cotton cloth showed an impressive electromagnetic shielding interference efficiency of -60 dB while the uncoated cotton cloth did not shield electromagnetic radiation. To demonstrate the versatility of the approach, Pd-coated synthetic polymeric substrates are used to electroadhere gels and gel-like substances. Nickel-coated substrates are not suitable for electroadhesion; hence, a conjugated polymer was deposited on the substrate to electroadhere gel-like substances.</p>
1 aVeerasubash, Muthupandi1 aBirajdar, Sarika, Hanamant1 aKika, Sharmin, Percy1 aSenthilkumaran, Marimuthu1 aDeshpande, Karan1 aShevate, Rahul1 aKrishnamoorthy, Kothandam  uhttps://library.ncl.res.in/content/metal-films-single-source-and-their-application-nanoporous-filtration-synthesis