水滑石负载钌催化剂的制备及其催化性能研究
Preparation of hydrotalcite loaded ruthenium catalyst and study on its catalytic performance
采用水热法制备了颗粒为球形且粒径均匀的镍铁水滑石(NiFe-LDH)前驱体,并通过湿法合成手段将Ru负载在NiFe-LDH上,制备出不同质量分数Ru负载的RuNiFe-LDH催化剂。利用XRD、SEM和FT-IR等测试方法研究RuNiFe-LDH的微观结构;通过活化过氧单硫酸盐(PMS)降解抗生素磺胺甲噁唑(SMX)考察催化剂的催化性能。结果表明,负载Ru后的催化剂能够在60 min内完全降解SMX;相比NiFe-LDH,负载Ru后催化剂的催化性能得到有效提升、在复杂水体环境下的抗干扰能力优秀,同时淬灭实验表明单线态氧(1O2)为反应中的主要活性物种。
Nickel-iron hydrotalcite (NiFe-LDH) spherical particles with uniform particle size are prepared via hydrothermal method,and used as a precursor to load Ru through wet synthesis method to obtain RuNiFe-LDH catalysts with different mass fractions of Ru.The microstructure of RuNiFe-LDH is also studied by means of X-ray diffraction (XRD),scanning electron microscopy (SEM) and infrared spectroscopy (FT-IR) tests.The catalytic performance of the catalysts is exemplified in the degradation of antibiotic sulfamethoxazole by activated peroxymethane monosulfate (PMS).The results show that all the catalysts loaded with Ru are able to completely degrade sulfamethoxazole within 60 min,and they exhibit higher catalytic performance than NiFe-LDH,showing excellent anti-interference ability in complex aqueous environment.In addition,the quenching experiment demonstrates that the monoclinic oxygen (1O2) is the main active specie in the reaction.
hydrotalcite / antibiotics / advanced oxidation process / hydrothermal
| [1] |
|
| [2] |
|
| [3] |
|
| [4] |
|
| [5] |
|
| [6] |
|
| [7] |
|
| [8] |
|
| [9] |
|
| [10] |
|
| [11] |
|
| [12] |
|
| [13] |
|
| [14] |
|
| [15] |
|
| [16] |
|
| [17] |
|
| [18] |
|
| [19] |
|
| [20] |
|
| [21] |
|
| [22] |
|
| [23] |
|
长沙理工大学专业学位研究生实践创新与创业能力提升项目(CLSJCX23121)
/
| 〈 |
|
〉 |