太阳能驱动的高选择性转化甘油到二亚使用表面原子工程BiVO4光电极
Yuan Lu1,2, Byoung Guan Lee3, Cheng Lin1
1School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, China.
Nature communications
|June 28, 2024
概括
工艺化木瓦纳酸盐 (BiVO4) 具有富含木的域和氧气空缺,增强光电化学糖氧化成二氧化,实现创纪录的生产速度和选择性.
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.
- 摄影化学的使用.
背景情况:
- 乙二氧化是一种高价值的产物,来自葡萄糖氧化.
- 糖醇的二次基基组的选择性氧化仍然是一个挑战.
研究的目的:
- 为了设计BiVO4表面,以便高效的光电化学氧化甘油到二亚.
- 通过表面修饰来提高选择性和生产率.
主要方法:
- 通过引入富含比斯木特的域和氧气空缺 (Bi-rich BiVO4-x) 来对BiVO4进行表面工程.
- 在AM 1.5G照明下进行光电化学测量.
- 对光电流密度和产品选择性的分析.
主要成果:
- 富含BiVO4的BiVO4-x显著增加了光电流密度,从1.42到4.26mA cm−2.2.
- 乙二氧化的选择性从54.0%提高到80.3%.
- 实现了361.9 mmol m−2 h−1.1.1 的二基亚生产率创纪录.
结论:
- BiVO4的表面原子定制对于选择性甘油氧化是有效的.
- 这种方法为高效的太阳能驱动有机转化提供了一条途径.
- 设计的富含双的BiVO4-x催化剂在二氧化生产中表现出卓越的性能.
更多相关视频
相关概念视频
Thermal and Photochemical Electrocyclic Reactions: Overview
2.3K
Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
2.3K
Chemiosmosis
97.7K
Oxidative phosphorylation is a highly efficient process that generates large amounts of adenosine triphosphate (ATP), the basic unit of energy that drives many cellular processes. Oxidative phosphorylation involves two processes— the electron transport chain and chemiosmosis.
Electron Transport Chain
The electron transport chain involves a series of protein complexes on the inner mitochondrial membrane that undergo a series of redox reactions. At the end of this chain, the electrons...
Electron Transport Chain
The electron transport chain involves a series of protein complexes on the inner mitochondrial membrane that undergo a series of redox reactions. At the end of this chain, the electrons...
97.7K
Oxidation of Alkenes: Syn Dihydroxylation with Potassium Permanganate
11.3K
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.
11.3K
Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide
10.1K
Alkenes are converted to 1,2-diols or glycols through a process called dihydroxylation. It involves the addition of two hydroxyl groups across the double bond with two different stereochemical approaches, namely anti and syn. Dihydroxylation using osmium tetroxide progresses with syn stereochemistry.
10.1K
Reactions of Aldehydes and Ketones: Baeyer–Villiger Oxidation
4.1K
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...
4.1K
Thermal Electrocyclic Reactions: Stereochemistry
2.0K
The stereochemistry of electrocyclic reactions is strongly influenced by the orbital symmetry of the polyene HOMO. Under thermal conditions, the reaction proceeds via the ground-state HOMO.
Selection Rules: Thermal Activation
Conjugated systems containing an even number of π-electron pairs undergo a conrotatory ring closure. For example, thermal electrocyclization of (2E,4E)-2,4-hexadiene, a conjugated diene containing two π-electron pairs, gives trans-3,4-dimethylcyclobutene.
Selection Rules: Thermal Activation
Conjugated systems containing an even number of π-electron pairs undergo a conrotatory ring closure. For example, thermal electrocyclization of (2E,4E)-2,4-hexadiene, a conjugated diene containing two π-electron pairs, gives trans-3,4-dimethylcyclobutene.
2.0K


