| 骆菁菁,罗才武,蒋亮,蒋天骄,谢超.Mo0协同Fe3＋活化过碳酸钠降解水中罗丹明B的研究[J].南华大学学报(自然科学版),2023,(4):1~8.[LUO Jingjing,LUO Caiwu,JIANG Liang,JIANG Tianjiao,XIE Chao.Degradation of Rhodamine-B in Water by Mo0 and Fe3＋ Activated Sodium Percarbonate[J].Journal of University of South China(Science and Technology),2023,(4):1~8.] |
| Mo0协同Fe3＋活化过碳酸钠降解水中罗丹明B的研究 |
| Degradation of Rhodamine-B in Water by Mo0 and Fe3＋ Activated Sodium Percarbonate |
| 投稿时间：2023-03-23 |
| DOI： |
| 中文关键词: 过碳酸钠 Fe3＋ Mo0 活化 罗丹明B |
| 英文关键词:sodium percarbonate Fe3＋ Mo0 activation rhodamine-B |
| 基金项目:国家自然科学基金面上项目(51978648);湖南省自然科学基金项目(2022JJ50156;2021JJ50012);衡阳市指导性科技计划项目(202121034466) |
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| 中文摘要: |
| 采用Mo0协同Fe3＋活化过碳酸钠体系去除水中罗丹明B,验证了Mo0/Fe3＋/过碳酸钠反应体系降解水中罗丹明B的有效性,探究了溶液初始pH、Mo0投加量、Fe3＋、过碳酸钠和罗丹明B初始浓度以及无机阴离子对罗丹明B降解效果的影响,并确定了该体系中活性物种的类型。结果表明,Mo0协同Fe3＋活化过碳酸钠显著地降解水中罗丹明B;在溶液初始pH=3.0、Mo0质量浓度为0.1 g/L,Fe3＋和过碳酸钠浓度分别为0.5 mmol/L和0.6 mmol/L时,罗丹明B的降解效果最佳;溶液中Cl－与NO－3的存在对罗丹明B降解的影响不大,而HCO－3与H2PO－4对罗丹明B降解的抑制效果明显。此外,Mo0表现出良好的稳定性。猝灭实验结果表明,反应体系共存自由基和非自由基物种。 |
| 英文摘要: |
| The activation system of sodium percarbonate by Mo0 and Fe3＋ was used to remove rhodamine-B in water, and the effectiveness of Mo0/Fe3＋/sodium percarbonate reaction system in degrading rhodamine-B was verified, and the effects of initial pH of solution, dosage of Mo0, initial concentration of Fe3＋, sodium percarbonate and rhodamine-B, as well as inorganic anions on rhodamine-B degradation were investigated, and the types of active species in the system were determined. The results showed that the activation system of sodium percarbonate by Mo0 and Fe3＋ was to effectively degrade rhodamine-B; the degradation of rhodamine-B reached the highest when the initial pH was 3.0, the mass concentrations of Mo0 was 0.1 g/L, the concentrations of Fe3＋ and sodium percarbonate were 0.5 mmol/L and 0.6 mmol/L, respectively; the presence of Cl－ and NO－3 in the solution had no obvious effect on rhodamine-B degradation whereas HCO－3 and H2PO－4 had obvious inhibitory effect on rhodamine-B degradation. In addition, Mo0 exhibited a good stability. The quenching experiments showed that both free radical and non-free radical species coexisted in the reaction system. |
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