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Title

SYNTHESIS, CHARACTERIZATION AND TITRATION PROCESS OF PHOSPHORYLATED GRAPHENE OXIDE

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Abstract

 NOWADAYS FUNCTIONALIZED GRAPHENE BASED SURFACES HAVE POTENTIAL APPLICATIONS IN CATALYST, ENERGY CONVERSION, ENVIRONMENT PROTECTION AND OTHER APPLIED SCIENTIFIC FIELDS. IN THIS PAPER WE HAVE REPORTED A NEW PROTOCOL FOR SYNTHESIS OF PHOSPHORYLATED GRAPHENE OXIDE (PGO) VIA WET CHEMICAL METHODS. AT FIRST STEP GRAPHENE OXIDE (GO) WAS SYNTHESIZED VIA MODIFIED HUMMERS METHOD. AFTERWARDS THE GO WAS FUNCTIONALIZED BY DIFFERENT CHEMICAL PHOSPHORYLATION METHODS. PRODUCTS WERE CHARACTERIZED BY USING FOURIER TRANSFORM INFRARED SPECTROSCOPY (FTIR), RAMAN SPECTROSCOPY; POWDER X-RAY DIFFRACTION (XRD), SCANNING ELECTRON MICROSCOPY (SEM), ENERGY-DISPERSIVE ANALYTICAL X-RAY (EDAX) SPECTROSCOPY, BET METHOD (FOR SURFACE AREA CALCULATION), THERMAL GRAVIMETRIC ANALYSIS (TGA) AND DIFFERENTIAL THERMOGRAVIMETRIC (DTG) ANALYSIS (FOR THERMAL STABILITY MEASUREMENT). THEN BY USING ACCURATE BACK TITRATION METHOD IN PRESENCE OF PH METER CONTROL, PGO SURFACE ACIDITY HAS BEEN MEASURED. CHARACTERIZATION RESULT AND TITRATION PROCEDURE REVEALED THAT; PGO POSES DISTINCT PHYSICAL AND CHEMICAL PROPERTIES; SUCH AS SOLVENT DISPERSITY, ACIDITY BEHAVIOR, ELECTRICAL BEARING, CATION EXCHANGE CAPABILITY, ALTERED MORPHOLOGY AND CRYSTALLINITY, AND ALSO IT POSES BETTER THERMAL STABILITY; IN COMPARISON WITH RARE GO SUBSTRATE.

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