采用环己醇还原高锰酸钾制备纳米二氧化锰，通过扫描电镜（SEM）、激光粒度仪和傅里叶变换红外光谱（FTIR）对纳米二氧化锰进行了形貌和结构表征。采用静态吸附试验，研究了溶液pH、吸附剂用量、染料初始质量浓度和吸附时间等因素对二氧化锰吸附罗丹明B（RhB）染料的影响。结果表明：制得的MnO2为纳米层状颗粒，粒径主要分布在230~477 nm，表面存在大量活性—OH，对RhB的吸附迅速有效，适合处理染料废水。%Nano layered manganese dioxide was successful y prepared through reduction of potassium permanganate by cyclohexanol. The morphology and structure of product was characterized by scanning elec⁃tron microscope (SEM), laser granulometer and Fourier transform infrared spectroscopy (FTIR). The effects of solution pH, sorbent dosage, the initial concentration of Rhodamine B and adsorption time on the adsorption were investigated through static adsorption. The results indicated that the prepared MnO2 was nano layered particles with 230~477 nm of particle size distribution, and there were many active —OH groups on its sur⁃face. The adsorbent was found to adsorb Rhodamine B rapidly and effectively, which was suited for treatment of dyeing wastewater.
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