【作者】 华丕龙； 韦士程； 王婷； 卢耀斌； 刘广立； 骆海萍； 张仁铎；

【Author】 Hua Pilong;Wei Shicheng;Wang Ting;Lu Yaobin;Liu Guangli;Luo Haiping;Zhang Renduo;CSG Power Generation Company;School of Environmental Science and Engineering,Sun Yat-sen University;Environmental Protection Research Institute of Guangxi Zhuang Autonomous Region;

【机构】 南方电网调峰调频发电有限公司； 中山大学环境科学与工程学院； 广西壮族自治区环境保护科学研究院；

【摘要】 为提高类芬顿催化剂的催化效果,合成了一种新型的硫修饰金属氧化物类芬顿催化剂,傅里叶红外分析表明该催化剂在1116 cm^-1处有明显峰,存在S=O和S-O结构,催化剂的比表面积达到54.37 m²/g,是未经硫修饰催化剂的2.4倍。硫修饰催化剂的最大饱和磁化强度为40.3 emu/g,硫修饰主要以S⁶⁺存在,增加了催化剂表面的酸性位点。选择典型难降解有机物的类芬顿催化降解试验表明:未经过硫修饰的催化剂对安替比林的去除率仅为10.77%,而经过硫修饰改性的催化剂对其去除率可达96.30%。在催化剂投加量为0.3 g/L,H₂O₂投加量为30 mmol/L和Na HCO3浓度为0.1g/L的条件下,50 mg/L的安替比林在40 min内完全降解。这为未来新型类芬顿催化剂的制备与应用提供了一种新的科学思路。更多还原

【Abstract】 In order to improve the catalytic performance of Fenton-like catalyst,a novel Fenton-like catalyst modified with sulfur for metal oxides was synthesized in this study. Fourier transform infrared analysis（ FTIR） showed that the catalyst had an obvious peak at 1116 cm^-1,which indicated a S = O and S-O structure in the catalyst. The specific surface area of the catalyst reached 54. 37 m²/g,which was 2. 4 times that of the catalyst without sulfur modification. The maximum saturation magnetization of sulfur modified catalyst was 40. 3 Emu/g. S⁶⁺was the mainly form existing in the sulfur modified catalyst,which increased the acid sites on the catalyst surface. The Fenton-like catalytic degradation experiments of typical refractory organic compounds showed that the antipyrine removal was only 10. 77% with the catalyst without sulfur modification,while the antipyrine removal was 96. 30% with the catalyst modified by sulfur. Under the conditions of catalyst dosage of 0. 3 g/L,H₂ O₂ dosage of 30 mmol/L and Na HCO₃ concentration of 0. 1 g/L,antipyrine 50 mg/L was completely degraded within 40 min. Our results should provide a novel scientific idea for the preparation and application of novel Fenton-like catalysts in future.更多还原