Comparison of micron- and nano-sized zeolite NaY composited with bamboo charcoal and their application in CO₂ adsorption

Abstract

This is the first report on synthesizing nano-sized zeolite NaY dispersed on acid-refluxed bamboo wood. The nano-sized NaY on the composite was produced by increasing the alkalinity in the seed gel. The as-synthesized composite was carbonized to convert the wood to charcoal and tested in CO₂ adsorption. The CO₂ adsorption capacity of nano- and micron-sized NaY composites was 2.30 and 1.25 mmol/g-composite. Moreover, nano-sized NaY composite shows higher adsorption capacity per gram of zeolite than bared nano-sized NaY. The dispersion of nano-sized zeolite on carbonaceous substrates could be an efficient strategy for enhancing CO₂ adsorption.