在分层双氧化物中氧气空隙工程调节了糖醇转化为乳酸的级联转化
Yang Liu1, Huishan Shang2, Bing Zhang2
1State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China.
ACS applied materials & interfaces
|June 24, 2025
概括
研究人员开发了一种新的光电化学方法,使用工程BiVO4电极选择性地将糖醇转化为乳酸. 这个过程避免了和多个反应步骤,提供了一个高效和环保的途径.
科学领域:
- 材料科学 材料科学 材料科学
- 催化剂是一种催化剂.
- 电化学 电化学 电化学
背景情况:
- 选择性地将甘油转化为乳酸在经济和环境上具有重要意义,但由于复杂的反应途径而具有挑战性.
- 现有的方法通常涉及多个步骤,并可能导致不必要的C-C裂变.
研究的目的:
- 通过光电化学方法实现选择性,无的糖醇转化为乳酸.
- 为了增强催化活性,在多层双氧化物 (LDH) 修改的BiVO4光电极中设计氧气空缺.
主要方法:
- 制造LDH修改的BiVO4光电极,具有工程氧气空位.
- 使用操作式拉曼光谱和现场里埃变换红外吸附光谱来监测反应中间体.
- 使用理论计算和时间解析的红外光谱来阐明反应机制.
主要成果:
- 在中性电解质中实现了高选择性,将糖醇转化为乳酸.
- 确定了光诱导的CO2+-OH动态演化,导致1,3-二氧化中间体.
- 证明氧气空缺通过降低能量障碍来促进脱水和异构化步骤.
结论:
- 在LDH修饰的BiVO4中,氧空位工程使得糖醇转化为乳酸的高效级联转化成为可能.
- 光电化学途径为没有的糖醇增值提供了一个有希望的替代方案.
- 了解氧气空缺的作用,可以了解选择性化学转换的催化机制.
相关概念视频
Fates of Pyruvate
9.0K
Pyruvate is the end product of glycolysis, where glucose is oxidized to pyruvate, simultaneously reducing NAD+ to NADH. Two molecules of ATP are also produced by substrate-level phosphorylation.
In aerobic organisms, pyruvate is metabolized via the citric acid cycle to produce reduced coenzymes NADH and FADH2. These coenzymes are then oxidized in the electron transport chain to produce ATP and, in the process, regenerate the NAD+ and FAD. As seen in some cell types and organisms, fermentation...
In aerobic organisms, pyruvate is metabolized via the citric acid cycle to produce reduced coenzymes NADH and FADH2. These coenzymes are then oxidized in the electron transport chain to produce ATP and, in the process, regenerate the NAD+ and FAD. As seen in some cell types and organisms, fermentation...
9.0K
Reactions of Aldehydes and Ketones: Baeyer–Villiger Oxidation
4.4K
Baeyer–Villiger oxidation converts aldehydes to carboxylic acids and ketones to esters. The reaction uses peroxy acids or peracids and is often catalyzed by acid. The reaction is named after its pioneers, Adolf von Baeyer and Victor Villiger. The reaction is achieved by a wide range of peracids such as m-chloroperoxybenzoic acid (mCPBA), perbenzoic acid (C6H5COOOH), peracetic acid (CH3COOOH), hydrogen peroxide (H2O2), and tert-butyl hydroperoxide (t-BuOOH).
The carbonyl center is...
The carbonyl center is...
4.4K
Preparation of Diols and Pinacol Rearrangement
3.5K
Compounds bearing two hydroxyl groups are known as diols. When the hydroxyl groups are located on adjacent carbon atoms, the diols are called vicinal diols or glycols. Under acidic conditions, vicinal diols undergo a specific reaction called pinacol rearrangement.
The reaction begins with transferring a proton from the acid catalyst to one of the hydroxyl groups, producing an oxonium ion.
The reaction begins with transferring a proton from the acid catalyst to one of the hydroxyl groups, producing an oxonium ion.
3.5K
Loss of Carboxy Group as CO2: Decarboxylation of Malonic Acid Derivatives
2.1K
Just like β-keto acids—which upon thermal decarboxylation form ketones—β-dicarboxylic acids undergo decarboxylation to generate monocarboxylic acids with the liberation of carbon dioxide.
2.1K
Fermentation
118.2K
Most eukaryotic organisms require oxygen to survive and function adequately. Such organisms produce large amounts of energy during aerobic respiration by metabolizing glucose and oxygen into carbon dioxide and water. However, most eukaryotes can generate some energy in the absence of oxygen by anaerobic metabolism.
Fermentation is a type of metabolic process that occurs in the absence of oxygen, where organic molecules such as glucose are broken down to produce energy. During this process, the...
Fermentation is a type of metabolic process that occurs in the absence of oxygen, where organic molecules such as glucose are broken down to produce energy. During this process, the...
118.2K
Aldehydes and Ketones with Water: Hydrate Formation
3.6K
An oxygen-based nucleophile, like water, can undergo addition reactions with aldehydes and ketones. The reaction leads to the formation of hydrates, also referred to as 1,1-diols or geminal diols.
The formation of hydrates is a reversible reaction. Hydrate formation is influenced by steric and electronic factors accompanying the alkyl substituents on the carbonyl group: The rate of hydrate formation increases with a decrease in the number of alkyl groups attached to the carbonyl carbon. Hence,...
The formation of hydrates is a reversible reaction. Hydrate formation is influenced by steric and electronic factors accompanying the alkyl substituents on the carbonyl group: The rate of hydrate formation increases with a decrease in the number of alkyl groups attached to the carbonyl carbon. Hence,...
3.6K


