【摘要】 采用溶剂热法合成了Cu₃（BTB）₂（BTB=4,4’,4"-benzenetri benzoate）介孔材料,并进行了SEM、BET、FTIR和XRD表征。该材料呈多孔球形,比表面积为1293m2/g,平均粒径为10μm。应用该材料进行刚果红偶氮染料废水处理,发现Cu₃（BTB）₂单独作用时,废水去除率为10.29%;Cu₃（BTB）₂和H₂O₂共同作用,去除率骤增到91.65%。通过紫外-可见光谱、高效液相色谱、微量热、捕获剂等手段分析其降解机理,Cu₃（BTB）₂与H₂O₂共存时,342nm处紫外特征吸收峰右移,HPLC峰强度显著降低,放热反应标准摩尔反应焓为2068.74k J/mol,加入自由基捕获剂异丙醇或氯仿后,去除率大幅降低。实验结果表明:Cu₃（BTB）₂单独作用为多孔吸附,去除率较低,与H₂O₂共存时去除率高,归结于Fenton-like反应产生活性自由基（·OH和O₂^–）使CR分子键断裂,且·OH占主导作用。更多还原

【Abstract】 The mesoporous materials Cu₃（BTB）₂（BTB=4,4’,4"-benzenetri benzoate）was synthesized,and then characterized by scanning electron microscopy（SEM）,nitrogen adsorption measurements（BET）,Fourier transform infrared spectrometer（FTIR）,and X-ray powder diffraction（XRD）.The results show that the Cu₃（BTB）₂ particles were spherical,with a SBET of 1293 m²/g,and an average particle size of 10μm.In the treatment of Congo red dye wastewater by using Cu₃（BTB）₂ alone,the removal rate was 10.29%,whereas treated by Cu₃（BTB）₂ and hydrogen peroxide（H₂O₂）together,the rate was increased to 91.65%.The mechanism was studied by means of UV-Vis spectroscopy,high performance liquid chromatography,microcalorimetry and free radical trapping agent.When Cu₃（BTB）₂ interacted with H₂O₂,the UV absorption peak at 342 nm shifted to the right,the peak intensity of HPLC was reduced by about 500 m V,and the exothermic standard molar reaction enthalpy was 2068.74 k J/mol.When we added opropanol（IPA）or chloroform（CF）to capture the ·OH or ·O₂^– radical into the reaction solution,the is removal rate was decreased.The results showed that Cu₃（BTB）₂ porous material could adsorb the CR e,while H₂O₂ could produce the ·OH and ·O₂^– free-radical to break the CR molecular bond through the Fenton-like reaction,and the OH radicals played a dominant role.更多还原