相关实验视频
Updated: Jul 8, 2026
07:48
Engineering a Bilayered Hydrogel to Control ASC Differentiation
Published on: May 25, 2012
14.0K
酸和酸联合修改的奇托桑海绵:更多的活性氨基因,大大改善了印花红的去除
Guozheng Xing1, Ziyi Chen1, Chaoyu Wu1
1College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China.
International journal of biological macromolecules
|August 3, 2025
概括
一种新型的基托桑海绵,CS@AA-CIT,有效地从水中去除红色卡尔米因染料. 这种环保吸附剂显示出高容量和可重复使用性,为废水处理提供了潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 绿色化学 绿色化学
背景情况:
- 工业废水往往含有持续性染料污染物,如红色卡明.
- 开发高效和可持续的吸附剂对于有效的染料去除至关重要.
- 基于酸盐的材料由于其可生物降解性和功能组而具有潜力.
研究的目的:
- 为了合成一种新型的绿色基托海绵 (CS@AA-CIT) 用酸和酸修饰.
- 为了评估CS@AA-CIT的吸附性能,用于红色卡明染料 (IC).
- 评估吸附剂的可重复使用性和废水处理中的应用潜力.
主要方法:
- 用阿斯巴酸修改基托桑,然后与酸进行交叉连接.
- 用冷干燥方法合成基托海绵结构.
- 批量吸附实验以确定吸附能力和动力学,随后进行固定床柱研究.
主要成果:
- CS@AA-CIT为IC实现了1068.919 mg/g的高吸附能力,显著超过了无酸版本.
- 增强的吸附归因于增加的静电吸引力,π-π相互作用和来自酸的结.
- 吸附剂在模拟废水中表现出良好的抗干扰能力,并在四个再生周期后保持了78%的性能.
结论:
- CS@AA-CIT是一种高效,可重复使用和环保的吸收剂,用于印花红色卡明染料.
- 该材料在处理染料污染的废水方面具有很大的实际应用潜力.
- 对各种染料污染物的CS@AA-CIT进行进一步的研究是有必要的.
相关概念视频
01:25Basicity of Heterocyclic Aromatic Amines
Heterocyclic amines, where the N atom is a part of an alicyclic system, are similar in basicity to alkylamines. Interestingly, the heterocyclic amine having a nitrogen atom as part of an aromatic ring has much less basicity than its corresponding alicyclic counterpart. For this reason, as presented in Figure 1, piperidine (pKb = 2.8) is significantly more basic than pyridine (pKb = 8.8).
01:11Aryldiazonium Salts to Azo Dyes: Diazo Coupling
The reaction of weakly electrophilic aryldiazonium (also called arenediazonium) salts with highly activated aromatic compounds leads to the formation of products with an —N=N— link, called an azo linkage. This reaction, presented in Figure 1, is known as diazo coupling and occurs without the loss of the nitrogen atoms of the aryldiazonium salt. Highly activated aromatic compounds such as phenols or arylamines favor the diazo coupling reaction. The coupling generally occurs at the para position.
01:29Indirect-Acting Cholinergic Agonists: Chemistry and Structure-Activity Relationship
Indirect-acting cholinergic agonists are agents that interact with the acetylcholinesterase enzyme in the synaptic cleft, preventing the breakdown of acetylcholine into choline and acetate. Consequently, the concentration of acetylcholine in the synaptic cleft increases. These agonists can be classified into reversible and irreversible inhibitors based on their duration of action.
Reversible inhibitors display short to medium durations of action. Short-acting agents include simple alcohols with...
Reversible inhibitors display short to medium durations of action. Short-acting agents include simple alcohols with...
01:18Indirect-Acting Cholinergic Agonists: Mechanism of Action
Indirect-acting cholinergic agonists work by interacting with an enzyme called acetylcholinesterase (AChE) in the synaptic cleft. They can be reversible or irreversible inhibitors and have different effects on the enzyme.
Reversible inhibitors like edrophonium bind to a specific part of the enzyme called the anionic catalytic site. They form noncovalent bonds, which means they are not strongly attached to the enzyme. This creates a temporary and less stable enzyme–inhibitor complex, leading to...
Reversible inhibitors like edrophonium bind to a specific part of the enzyme called the anionic catalytic site. They form noncovalent bonds, which means they are not strongly attached to the enzyme. This creates a temporary and less stable enzyme–inhibitor complex, leading to...
01:19Masking and Demasking Agents
EDTA titrations may necessitate masking and demasking agents to temporarily protect a particular metal ion in a mixture from the EDTA reaction. These agents facilitate the sequential analysis of the metal ions by forming stable complexes with some—but not all—metal ions during certain steps.
There are many masking agents, such as cyanide, fluoride, triethanolamine, thiourea, and 2,3-bis(sulfanyl)propan-1-ol (formerly 2,3-dimercapto-1-propanol), with the masking agent chosen based on the metal...
There are many masking agents, such as cyanide, fluoride, triethanolamine, thiourea, and 2,3-bis(sulfanyl)propan-1-ol (formerly 2,3-dimercapto-1-propanol), with the masking agent chosen based on the metal...
01:17Ion Exchange
Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or basic...