Physical characterization of catalystsThe X-ray diffraction (XRD) patterns were carried out by DX-2000 X-ray diffractometer (Dandong Ltd., China). X-ray photoelectron microscope (XPS) was used an ESCALAB 250Xi (Thermo Fisher Scientific, USA) spectrometer with K? X-ray source. The Transmissionelectron microscope (TEM) images were obtained using a field emission transmission electron microscope (FEI Tecnai G2 F20, USA), To confirm the content of Pt inductively coupled plasma-atomic emission spectrometry (ICP-AES) was used and all electrochemical measurements were performed in a traditional three-electrode cell at room temperature on a CHI 760b electrochemical workstation (Shanghai Chenhua Instrument Ltd., China).1.
MaterialsAll the reagents were of AR grade and used as received without further puri?cation. Chloroplatinic acid hexahydrate (H2PtCl6. 6H2O), paraformaldehyde, ethyl acetoacetate, 20% platinum on graphitized carbon (Pt/C),5% Na?on solution were purchased from Aldrich. Dichloromethane (DCM), ethyl acetate (EtOAc), acetonitrile, chloroform, methanol, ammonium acetate, formic acid, potassium hydroxide, sulfuric acid were bought from Merck, India. All glassware were cleaned using aqua-regia, subsequently rinsed with a copious amount of double distilled water and dried well prior to use. Double distilled water was used throughout the course of the experiment.Preparation of functionalized carbon black:XC-72R carbon black was functionalized in conc.
HNO3 and conc. H2SO4. 20ml HNO3 and 20ml H2SO4 was added in 400 mg of carbon black (XC-72R) in round bottom flask and ultrasonic was done at 50 ? for 70 minutes. While mixture was magnetically stirred for 1 minute after each 10 minutes during ultra-sonication .After that solution was transferred to 400 ml beaker, wash it with deionized water and filter it via vacuum funnel. Than product was dried at 80 oC for 8 h and ground by aget and pestal.
Synthesis schematics of functionalized carbon shown in figure 1.
