通过共价纳米粒子连接工程多功能纳米孔聚合物网络,以实现超快速的捕获
Aayush Anand1, Suresh Tiwari1, Ashish Kumar Giri1
1Department of chemistry, Indian Institute of Technology Patna, Bihta, Patna, 801106, Bihar, India. sch@iitp.ac.in.
Materials horizons
|February 13, 2026
概括
研究人员开发了一种可持续的方法来创建一个纳米多孔聚合物网络 (PP-PZ),以有效地捕获放射性. 这种材料表现出异常的吸附能力和超快的动力学,这对于核废物整治至关重要.
科学领域:
- 材料科学,聚合物化学,环境工程
背景情况:
- 从核废物中有效捕获放射性是一个关键的挑战.
- 多孔聚合物框架需要可访问的功能组,以获得最佳的吸附性能.
研究的目的:
- 为具有增强吸附能力的纳米多孔聚合物网络 (PP-PZ) 开发可持续的合成策略.
- 研究合成的PP-PZ用于放射性去除的结构性质和吸附性能.
主要方法:
- 一种可持续的合成,涉及在水中交叉连接合性纳米粒子,使用 piperazine 作为交叉连接剂.
- 使用场发射扫描电子显微镜 (FESEM) 和泽塔电位测量,对得到的聚合物网络 (PP-PZ) 的表征.
- 评估来自蒸汽,水和有机相的吸附能力,并评估吸附动力学.
主要成果:
- 合成的PP-PZ具有中孔质地 (孔径∼3 nm) 和高表面积 (143 m2 g-1).
- 取得了异常的吸收能力:12.4gg-1 (蒸汽),8.5gg-1 (水性) 和5.3gg-1 (有机).
- 在水中观察到超快吸附动力学 (平衡在1分钟内),在模拟的废水和连续流系统中证明了可重复使用性.
结论:
- 开发的PP-PZ提供了一个有前途的解决方案,用于从核废物流中超快速和高效地捕获放射性.
- 可持续合成战略和高性能突出显示了工业核废物整治应用的潜力.
- 该材料在具有挑战性的条件下的稳定性和可重复使用性强调了其实际适用性.
相关概念视频
02:18Network Covalent Solids
16.2K
Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
16.2K
02:04Covalently Linked Protein Regulators
9.7K
Proteins can undergo many types of post-translational modifications, often in response to changes in their environment. These modifications play an important role in the function and stability of these proteins. Covalently linked molecules include functional groups, such as methyl, acetyl, and phosphate groups, and also small proteins, such as ubiquitin. There are around 200 different types of covalent regulators that have been identified.
These groups modify specific amino acids in a protein....
These groups modify specific amino acids in a protein....
9.7K
02:04Covalently Linked Protein Regulators
2.0K
2.0K
02:34Polymers
41.4K
The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the...
41.4K
01:29Covalent Bonds
164.4K
Overview
164.4K
01:08Covalent Bonds
11.9K
Overview
When two atoms share electrons to complete their valence shells, they create a covalent bond. An atom's electronegativity—the force with which shared electrons are pulled towards an atom—determines how the electrons are shared. Molecules formed with covalent bonds can be either polar or nonpolar. Atoms with similar electronegativities form nonpolar covalent bonds; the electrons are shared equally. Atoms with different electronegativities share electrons unequally,...
When two atoms share electrons to complete their valence shells, they create a covalent bond. An atom's electronegativity—the force with which shared electrons are pulled towards an atom—determines how the electrons are shared. Molecules formed with covalent bonds can be either polar or nonpolar. Atoms with similar electronegativities form nonpolar covalent bonds; the electrons are shared equally. Atoms with different electronegativities share electrons unequally,...
11.9K