Preparation Of Carbon Carrier Nanocomposite And Application In Water Treatment

Prussian blue/graphene/carbon fibers nano-composite (PB/GN/CFs) was prepared by electrochemical method, which was characterized by field emission scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy and electrochemical techniques. The Prussian blue nanocubes were well modified at the surface of carbon fibers with a size of 30±5 nm. The recovery of cesium ion was investigated using PB/GN/CFs. The adsorption process matched to pseudo-second-order kinetics model and Langmuir model with a endothermic spontaneous reaction. The structural and properties transformation of PB/GN/CFs were characterized in electrochemical switch processes. Both the structure and properties of PB were reversible at a potential range of -0.1-1.2 V. Both H3O+ and NH4+ could play dual role of electrolyte and competitor for the desorption of cesium ion.Melamine-formaldehyde-tetraoxalyl ethylenediamine chelating resins were grafted on activated carbon (MFT/AC) using a pressure relief-dipping-ultrasonic synthesis method. Nano-nickel could be reduced by ascorbic acid from spent electroless nickel plating bath in situ to form nano-nickel/activated carbon catalyst (Ni/AC). The materials were carefully examined by Fourier transform infrared spectroscopy, X-ray diffraction, field emission scanning electron microscopy, X-ray photoelectron spectroscopy and electrochemistry techniques. The resins were well distributed on the inside and outside surfaces of activated carbon with a size of 120±30 nm, and a great deal of nano-nickel particles were evenly deposited with a size of 3.8±1.1 nm. Moreover, Ni/AC was successfully used as a catalyst for ultrasonic degradation of 2,6-dichlorophenol.