从水中有效地去除水晶紫色染料,使用铁 - 聚氨纳米复合材料
Alka Singh1, Richa Tomar1, N B Singh2,3
1Department of Chemistry & Biochemistry, Sharda University, Greater Noida, India.
Environmental monitoring and assessment
|May 22, 2024
概括
一种绿色合成方法创造了用于废水处理的铁酸-聚亚尼林 (ZnFe2O4-PANI) 纳米复合材料. 这些新型纳米材料有效吸附晶体紫色染料,展示了自发和高效的去除能力.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 纳米技术 纳米技术
背景情况:
- 纳米费里特及其复合材料在废水处理中至关重要.
- 开发先进纳米材料的绿色合成方法对于环境修复至关重要.
研究的目的:
- 为了绿色合成铁酸盐 (ZnFe2O4) 纳米粒子.
- 为了制造ZnFe2O4-聚氨 (PANI) 纳米复合材料,用于去除染料.
- 描述纳米复合材料并评估其对晶体紫色染料的吸附性能.
主要方法:
- 铁纳米颗粒的绿色合成.
- 在现场聚合ZnFe2O4与聚氨形成ZnFe2O4-PANI纳米复合物.
- 使用X射线衍射 (XRD),富里埃变换红外光谱 (FTIR) 和扫描电子显微镜 (SEM) 的表征.
- 吸附性研究用于消除水晶紫色染料,分析pH,剂量,温度和度等参数.
- 吸附数据适合兰格穆尔等温和和伪二次动力学.
主要成果:
- 合成的铁纳米颗粒的晶体尺寸为17.67nm.
- SEM揭示了ZnFe2O4-PANI纳米复合物的同质纳米粒子结构.
- 纳米复合材料证明了水晶紫色染料的有效吸附,数据符合兰迈尔和伪二阶模型.
- 热力学分析证实了吸附过程的自发性质.
结论:
- 绿色合成的ZnFe2O4-PANI纳米复合材料是一种有前途的吸附剂,用于从废水中去除染料.
- 该研究强调了环保纳米材料在应对水污染挑战方面的潜力.
- 了解吸附机制和动力学是优化废水处理过程的关键.
相关概念视频
00:56Extraction: Advanced Methods
446
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
446
01:06Coagulation
283
Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...
283