超临界水连续合成纳米氧化锌及其光催化性能

Abstract

Abstract: Zinc oxide（ZnO）nanoparticles were synthesized by continuous supercritical water technique and its photo- catalytic performance was studied.When reaction conditions were at the reaction temperature of 385 ℃，the pressure of 25 MPa， the reaction time of 40 s，and the reactant concentrations of Zn₂⁺ and OH^- of 0.075 mol/L and 0.3 mol/L，respectively，spherical ZnO nanoparticles of 30 nm were obtained.Methyl orange solution was taken as a model of light catalytic reaction.Results indicated that the degradation of methyl orange reached 100% via as-synthesized nano-sized ZnO as photocatalyst under ultraviolet light，and the concentration and dispersibility of nano-sized ZnO had a significant impact on the photocatalytic efficiency.

Key words: supercritical water, zinc oxide, nanoparticle, photocatalyst

CLC Number:

TQ132.41

MAO Zhi-Qiang, LENG Yuan-Peng, ZHAO Ya-Ping. Continuous preparation of nano-sized zinc oxide by supercritical water technique and photocatalytic activity thereof[J]. INORGANICCHEMICALSINDUSTRY, 2013, 45(10): 53-.

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Inorganic Acid-Base-Salt Committee of CIESC

Continuous preparation of nano-sized zinc oxide by supercritical water technique and photocatalytic activity thereof

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