无机有机混合改性过氧化物作为可控制的释放氧的化合物
Shaolei Zhao1, Zhengwei Liu1, Zixuan Li1
1State Key Laboratory of Chemical Safety, SINOPEC Research Institute of Safety Engineering Co., Ltd., 266000 Qingdao, China.
ACS applied materials & interfaces
|December 19, 2025
概括
研究人员使用二氧化 (SiO2) 涂层和八三氧化 (OTES) 接种开发了一种新型的过氧化 (CaO2) 释放氧的化合物. 这种混合材料为环境应用提供可调节的,持久的氧气释放.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 环境科学 环境科学
背景情况:
- 传统的氧释放化合物 (ORC) 呈现出无法控制的氧释放.
- 开发可调节和长时间释放氧气的ORC对于各种应用至关重要.
研究的目的:
- 开发一种基于过氧化 (CaO2) 的新型ORC,可控制氧气释放.
- 通过使用二氧化 (SiO2) 涂层和八三氧化 (OTES) 接种,实现CaO2的无机-有机协同修饰.
主要方法:
- 使用四乙烯正酸盐 (TEOS) 的sol-gel方法在CaO2颗粒上创建纳米SiO2层.
- 在SiO2层上植入了八三氧化 (OTES),形成了疏水性有机涂层,形成了核心外结构复合材料 (OTES-SiO2@CaO2).
- 鉴定技术证实了CaO2,SiO2和OTES之间的化学结合,建立了双重化学结合的受控释放屏障.
主要成果:
- 经过修改的OTES-SiO2@CaO2复合材料表现出可调节的疏水性 (水接触角度为29.4°145.2°),有效控制了水的透.
- 与原始CaO2.2相比,累积氧气释放在35天内减少了53.3%,与原始CaO2.2相比.
- 估计释放周期在387天至790天之间,显示了控制释放性能显著改善,涂层含量更低.
结论:
- 开发的无机有机混合改造策略为创建功能控制释放材料提供了强大的方法.
- 这种方法为设计用于环境和化学应用的先进材料提供了理论基础.
- 可调节和长时间释放氧气的特性使这些复合材料在实际使用中非常有前途.
相关概念视频
01:20Radical Autoxidation
3.0K
The oxidation of an organic compound in the presence of air or oxygen is called autoxidation. For example, cumene reacts with oxygen to form hydroperoxide. Autoxidation involves initiation, propagation, and termination steps. Many organic compounds are susceptible to autoxidation—especially ethers in the presence of oxygen, which form hydroperoxides. Even though this reaction is slow, old ether bottles contain small amounts of peroxide, which leads to laboratory explosions during ether...
3.0K
02:21Oxidation of Alkenes: Syn Dihydroxylation with Potassium Permanganate
16.2K
Alkenes can be dihydroxylated using potassium permanganate. The method encompasses the reaction of an alkene with a cold, dilute solution of potassium permanganate under basic conditions to form a cis-diol along with a brown precipitate of manganese dioxide.
16.2K
01:15Oxidations of Aldehydes and Ketones to Carboxylic Acids
5.4K
Oxidation of aldehydes and ketones results in the formation of carboxylic acids. Aldehydes, bearing hydrogen next to the carbonyl group, are easily oxidized compared to ketones. This is because an aldehydic proton can easily be abstracted during oxidation.
Aldehydes readily undergo oxidation in strong oxidizing agents such as potassium permanganate and chromic acid. The oxidation can also be carried out using mild oxidizing agents such as silver oxide. In fact, aldehydes can be easily oxidized...
Aldehydes readily undergo oxidation in strong oxidizing agents such as potassium permanganate and chromic acid. The oxidation can also be carried out using mild oxidizing agents such as silver oxide. In fact, aldehydes can be easily oxidized...
5.4K
02:23Autoxidation of Ethers to Peroxides and Hydroperoxides
9.3K
Ethers represent a class of chemical compounds that become more dangerous with prolonged storage because they tend to form explosive peroxides when standing in the air. Autoxidation is the spontaneous oxidation of a compound in air. In the presence of oxygen, ethers slowly oxidize to form hydroperoxides and dialkyl peroxides.
9.3K
02:04Oxidation of Alkenes: Anti Dihydroxylation with Peroxy Acids
7.2K
Diols are compounds with two hydroxyl groups. In addition to syn dihydroxylation, diols can also be synthesized through the process of anti dihydroxylation. The process involves treating an alkene with a peroxycarboxylic acid to form an epoxide. Epoxides are highly strained three-membered rings with oxygen and two carbons occupying the corners of an equilateral triangle. This step is followed by ring-opening of the epoxide in the presence of an aqueous acid to give a trans diol.
7.2K