Nanoparticles, particles of size 10-9have a high potential as water, waste water and air pollution treatment. In this research, nanoscale iron particles were synthesized by reduction of Fe2SO47 H2O by NaBH4at low temperature to avoid oxidation during the process. Characterization of the particles based on particle size, material structure, surface morphology and the composition of forming element was done by transmission electron microscopy (TEM), X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectometry (EDS), respectively. Surface area and magnetic character was measured by BET surface area and vibrating sample magnetometry (VSM), respectively. Morfological observation showed that structured core-shell of size < 44 nm and shell of size ~ 3 nm with saturated magnetization value ~ 132 emu g‾¹ has been formed.
Characterization of activated carbon from oil palm shell prepared by H3PO4and application for the removal of procion red dye was investigated. Oil palm shell was carbonized at 500°C and prepared by H3PO45 % with ratio of 1:3. Characterized activated carbon by Fourier Transform Infra Red Spectroscopy (FTIR), Brunauer Emmet Teller (BET) surface area, Scanning Electron Microscope-Energy Dispersive X Ray Spectrometry (SEM-EDS). The result indicated that functional groups on the activated carbon surface were influenced by acidic treatment. The activated carbon have surface area 385.991 m2g-1and volume of micro porous 0.201 cm3g-1. The SEM-EDS image showed that activated carbon have many porous structure and the strong peak of C was 92.7 %. Adsorption capacity of activated carbon prepared by H3PO45 % was 278.197 mg g-1which is higher than not chemical activation was 216.456 mg g-1at equilibrium time 5 h.
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