Research On Preparation And Photo-catalytic Capability Of Bamboo Charcoal/zinc Oxide

Bamboo Charcoal is one kind of pyrolysis products of bamboo wood, and it has higherporosity, larger specific surface area, and stronger adsorption ability. NanoZnO is a wide bandgaps semiconductor material, and it has photocatalytic degradation on organic pollutants.Coating bamboo charcoal surface with NanoZnO is successfully performed by hydrothermaldecomposition method using ZnCl2and NaOH. At the same time, we study on the influencefactors of Bamboo Charcoal's absorbability, influence factors of growth of NanoZnO, influencefactors of photocatalytic degradation of NanoZnO and Bamboo Charcoal/ZnO. The resultsshow below:(1)The Bamboo Charcoal's adsorption rate increased with the increased of time andBamboo Charcoal amount, decreased with the increased of original concentration of methylorange and the pH of solution. The absorption rate increased with the increased of temperature,but it decreased after80min.(2)The introduction of ethanol in hydrothermal reaction effectively reduced the particlereunion. Different ratio of reactants would affect the saturation degree of solution, whichaffected the growth of NanoZnO. The introduction of CTAB in hydrothermal reactioneffectively affected the growth of the NanoZnO morphology, when added too much; it wouldincrease the difficulty in the later washing. The reaction time and temperature influenced thegrowth of the NanoZnO morphology.(3) The degradation rate of Nano ZnO and Bamboo Charcoal/ZnO increased with theincreased of time, amount of Nano ZnO and BambooCharcoal/ZnO, but decreased with theincreased of temperature, original concentration of methyl orange and the pH of solution, thebest doping amount of Bamboo Charcoal is1.5000g. The degradation of BambooCharcoal/ZnO is better than the single Charcoal Charcoal and NanoZnO.