Synthesis and photocatalytic denitrification performance of graphene oxide/Fe2O3 composites
LI Tong1,2， SONG Cun- yi1,2，TONG Zhen- song1,2
（1. School of Civil and Environmental Engineering，University of Science & Technology Beijing，Beijing 100083，China 2. The recycling of the waste industrial typical pollutants key laboratory of Beijing，Beijing 100083，China）
Abstract：Graphene oxide has been made by improved Hummers method, then using graphene oxide as a carrier to the hydrothermal preparation of graphene oxide iron oxide composite material (GO- Fe2O3), by adjusting the additive amount of raw materials, reaction temperature and time conditions changed into the structure and properties of composite materials. Using, X- ray diffraction (XRD), scanning electron microscopy (SEM) and X- ray photoelectron spectroscopy of the product have been characterized. A certain amount of catalyst in H2O2/UV system was added, the photocatalytic oxidation denitrification performance was studied. The experiment shows that, the conversion rate of NOx improved with the increasing of catalyst dosing quantity, concentration of H2O2, solution temperature, oxygen concentration until they reach a certain value. And then conversion rate remains unchanged or to reduce. The best process parameters : catalyst dosing quantity is 0. 5 g/100 mL, H2O2 concentration 0. 5 mol/L, solution temperature 30 ℃, oxygen volume concentration is 6%, nitrogen oxide degradation efficiency up to 84. 33%.
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2016, Vol. 23 
