水滑石改性二氧化硅新材料去除养殖用水中的孔雀石绿及结晶紫

合成了水滑石改性的系列硅胶新材料HTS-n(s),该新材料同时包含有酸性位与碱性位,并通过碱腐蚀获得了3～4 nm的小孔和大的比表面积。该类材料可选择性吸附去除水产养殖用水中的工业染料类污染物孔雀石绿和结晶紫。吸附后水中剩余的染料浓度通过高效液相色谱-质谱/质谱联用仪进行检测,结果显示新材料的吸附性能超过常用的工业吸附剂NaY沸石和活性炭。

A Novel Effective Industry Dyes Infectant Trapper Derived from the Porous Silica Coated with Hydrotalcite Gel

A new kind of modified amorphous silica materials HTS-n(s) containing both acidic and basic centers was synthesized.Both large BET surface area and 3-4 nm micropores of the composites were obtained after they were soaked with alkaline solution.This new material can selectively adsorb and remove the industry dyes infectants such as malachite green(MG) and crystal violet(CV) in culture water.After the centrifugation to separate the solution and the solid,the amounts of residual dye in solution were analyzed by liquid chromatography-tandem mass spectrometry(LC-MS/MS).These modified silicas exhibited a much better adsorption capacity for industry dyes such as MG and CV than that of active carbon and zeolite NaY.