简单的合成基于人类酸的双功能新型超交联聚合物,用于有前途的CO2捕获和高效的Cr3+吸附
Amin Abid1, Saqlain Raza1, Ahmad Kaleem Qureshi2
1Department of Chemistry, University of Sahiwal, Sahiwal, 57000, Pakistan.
Scientific reports
|May 17, 2024
概括
一种新型聚合物HCP-AA有效吸附 (Cr3+) 和二氧化碳 (CO2). 这种材料具有很高的吸附能力,使其成为废水处理和气体捕获应用的有希望的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 聚合物化学 聚合物化学
背景情况:
- 开发高效的吸附剂对于环境修复和气体分离至关重要.
- 超交联聚合物为吸附应用提供高表面积和可调节性质.
研究的目的:
- 合成和描述一种新型的2 - 氨基酸 (HCP-AA) 的超交联聚合物.
- 评估HCP-AA对离子 (Cr3+) 和二氧化碳 (CO2) 的吸附性能.
主要方法:
- 合成HCP-AA,其Brunauer-Emmett-Teller表面积很大 (615m2g-1).
- 使用实验室和工业废水对Cr3+的吸附实验.
- 在不同温度 (273K和298K) 的CO2吸附测量.
- 同热和运动建模 (弗朗德利希,伪二阶) 和热力学分析.
主要成果:
- 在HCP-AA中,实验室废水吸收了93%的Cr3+,工业废水吸收了88%.
- 最佳的Cr3+吸附发生在pH7.8分钟的接触时间和0.8g的吸附剂剂量,容量为52.63mg-1g.
- 弗洛因德利希等温 (R2=0.9273) 和伪二次动力学 (R2=0.979) 最好描述了Cr3+吸附.
- CO2 的吸附能力在273K时为1.39 mmol/g,在298K时为1.12 mmol/g.
- 热力学分析表明Cr3+的非自发和外热吸附.
结论:
- 在Cr3+和CO2捕获方面,HCP-AA显示出作为吸附剂的显著潜力.
- 在HCP-AA中,碳基 (-COOH) 和氨基 (-NH2) 组是增强吸附的关键功能组.
- 该材料在真正的工业废水中的性能突出显示了其实际应用性.
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