The synthesis of analcime zeolite nanoparticles using silica extracted from stem of sorghum Halepenesic ash and their application as support for electrooxidation of formaldehyde

作者: Seyed Naser Azizi , Shahram Ghasemi , Masoume Derakhshani-mansoorkuhi

DOI: 10.1016/J.IJHYDENE.2016.08.181

关键词: Cyclic voltammetryNuclear chemistryElectrocatalystCrystallinityFormaldehydeZeoliteInorganic chemistryChronoamperometryNanoparticleMaterials scienceAnalcime

摘要: Abstract In this work, a free template method is used to synthesize nanostructured analcime (ANA) zeolite from natural source and the prepared applied as substrate fabricate modified electrode. To aim, ANA nanoparticles are synthesized by hydrothermal using amorphous silica extracted stem of sorghum ash (SSA) with approximately 92.34% purity in absence organic template. The effects different parameters such Si/Al ratio, heating time, temperature stirring time on synthesis crystallinity optimized. characterized X-ray diffraction, Fourier-transform infrared scanning electron microscopy (SEM) techniques. SEM shows that appear spherical particles contains some smaller which arranged regular pattern each other. Also, fibers consist range 30–48 nm observed. carbon paste electrode (CPE) based Ni species (Ni/ANACPE). electrochemical oxidation formaldehyde studied at Ni/ANACPE alkaline solution. From cyclic voltammetry studies, it shown can facilitate compared CPE. scan rate potential, concentration formaldehyde, amount Ni-zeolite investigated formaldehyde. Also chronoamperometry technique, catalytic constant (k) for found be 7.56 × 10 4  cm 3  mol −1  s .

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