全可见光吸收氮化碳光降解雷尼替丁的性能及应用研究
艾伟 , 段旭 , 马小蕾 , 张军 , 雷楷 , 祁学玲 , 宋海东
现代化工 ›› 2026, Vol. 46 ›› Issue (8) : 199 -205.
全可见光吸收氮化碳光降解雷尼替丁的性能及应用研究
Study on photodegradation performance and application of carbon nitride with full visible light absorption for ranitidine
采用二次煅烧法制备了一种全可见光吸收的石墨相氮化碳(DCN-Cg)材料。将其应用于活化过一硫酸盐(PMS)光降解雷尼替丁(RNT),通过静态批量实验优化了反应条件。在催化剂投加量为0.8 g/L、底物浓度为5 mg/L、PMS浓度为 0.32 mmol/L、pH=7时,30 min后对RNT的降解效率达91.19%,反应速率常数为0.084 min-1。进一步在连续流面板反应器(5 cm×5 cm)中进行了系统评估,在涂覆量为1 mg/cm2时可连续处理约540 mL的废水(1 mg/L,>80%),并对常见共存阴离子表现出良好的抗干扰性。自由基淬灭实验和能带结构图表明,该体系主要活性氧物种为·${\mathit{O}}_{2}^{-}$、1O2和·S${\mathit{O}}_{4}^{-}$,而不涉及·OH的参与。
In this study,a carbon nitride material (DCN-Cg) with full visible light absorption was prepared by a secondary calcination method.DCN-Cg was applied to the photodegradation of ranitidine (RNT) by activated peroxymonosulfate (PMS),and the reaction conditions were optimized by static batch experiments.The degradation efficiency of RNT reached 91.19% after 30 min with a reaction rate constant of 0.084 min-1 at a catalyst dosage of 0.8 g/L,RNT concentration of 5 mg/L,PMS concentration of 0.32 mmol/L,and pH=7.Further systematic evaluations were carried out in a continuous flow panel reactor (5 cm × 5 cm).About 540 mL of wastewater (1 mg/L,>80%) could be treated continuously at a coating volume of 1 mg/cm2 and showed promising interference resistance to coexisting anions.The free radical quenching experiments and energy band structure indicated that the main reactive oxygen species during the reaction were ·${\mathit{O}}_{2}^{-}$,1O2,and ·S${\mathit{O}}_{4}^{-}$,without the participation of ·OH.
全可见光吸收 / 氮化碳 / 连续流反应器 / 过一硫酸盐 / 光降解
full visible light absorption / carbon nitride / continuous flow reactor / peroxymonosulfate / photodegradation
| [1] |
|
| [2] |
艾伟, 段旭, 雷楷, |
| [3] |
|
| [4] |
朱蓓蓓, 周杰, 刁国旺. 石墨相氮化碳的改性及在环境领域的应用研究进展[J]. 化工新型材料, 2025, 53(2):40-47,52. |
| [5] |
|
| [6] |
|
| [7] |
|
| [8] |
|
| [9] |
|
| [10] |
|
| [11] |
|
| [12] |
|
| [13] |
|
| [14] |
|
| [15] |
|
| [16] |
李硕, 李育珍, 夏云生, |
| [17] |
李佳欣. ZnIn2S4基光电极基底材料及其改性对雷尼替丁催化降解性能的影响研究[D]. 西安: 西安建筑科技大学, 2024. |
| [18] |
郑佳红, 黄植. Fe3O4/CoS/g-C3N4催化剂的制备及降解罗丹明B[J]. 硅酸盐学报, 2024, 52(12):3748-3760. |
| [19] |
|
/
| 〈 |
|
〉 |