使用Cu2O多面体,用光催化氧化甲基的有氧氧化成硫化物
Wan-Ting Dai1, Chun-Chia Wen1, Hsi-Jui Lin1
1Department of Chemistry, National Tsing Hua University, Hsinchu 300044, Taiwan.
ACS applied materials & interfaces
|March 13, 2025
概括
具有可控形状的氧化铜 (Cu2O) 晶体有效催化二醇氧化成二硫化物. 特定的晶体面,如十二面,显著增强有机转换的光催化活性.
科学领域:
- 材料科学 材料科学 材料科学
- 光催化作用的光催化
- 有机化学 有机化学
背景情况:
- 半导体侧面效应影响光催化活性.
- 简单的多面体半导体粒子对于二硫化物键的形成还没有得到充分的研究.
- 铜 (I) 氧化物 (Cu2O) 是光催化的一个有前途的半导体.
研究的目的:
- 为了证明光催化有机转换中的半导体侧面效应.
- 为了利用简单的多面体Cu2O粒子形成二硫化物键.
- 使用Cu2O光催化剂优化有效的醇氧化条件.
主要方法:
- 合成Cu2O立方体,八面体和十二面体.
- 在LED照射下使用Cu2O晶体对4-甲基乙醇进行光催化有氧氧化.
- 包括溶剂和共催化剂在内的反应条件的优化 (TMEDA).
- 反应性物种捕捉实验,以阐明反应机制.
主要成果:
- Cu2O 十二面体表现出对硫醇氧化的最高光催化效率.
- 与商业粉相比,1,2-di-p-tolyldisulfane的产量在特定的Cu2O方面优于商业粉.
- 最优化的方法仅在5分钟内就能获得各种替代型硫醇的高产量.
- 通过反应性物种捕捉实验支持的机制.
结论:
- 通过晶体面工程进行半导体表面控制是提高光催化效率的有效策略.
- Cu2O 十二面体是二硫化物键形成的高效光催化剂.
- 这种方法为光催化有机转化提供了一个简单而有效的方法.
更多相关视频
10:21Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions
Published on: October 5, 2019
8.3K
07:16Resin-Assisted Capture Coupled with Isobaric Tandem Mass Tag Labeling for Multiplexed Quantification of Protein Thiol Oxidation
Published on: June 21, 2021
1.7K
相关概念视频
Preparation and Reactions of Thiols
5.9K
Thiols are prepared using the hydrosulfide anion as a nucleophile in a nucleophilic substitution reaction with alkyl halides. For instance, bromobutane reacts with sodium hydrosulfide to give butanethiol.
5.9K
Preparation and Reactions of Sulfides
4.7K
Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
4.7K
Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide
9.7K
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.
9.7K
Oxidation of Phenols to Quinones
2.8K
In the presence of oxidizing agents, phenols are oxidized to quinones. Quinones can be easily reduced back to phenols using mild reducing agents. The electron-donating hydroxyl group enhances the reactivity of the aromatic ring, enabling oxidation of the ring even in the absence of an α hydrogen.
o-hydroxy phenols are oxidized to o-quinones and p-hydroxy phenols to p-quinones. Such redox reactions involve the transfer of two electrons and two protons. The reversible redox...
o-hydroxy phenols are oxidized to o-quinones and p-hydroxy phenols to p-quinones. Such redox reactions involve the transfer of two electrons and two protons. The reversible redox...
2.8K
Oxidation of Alcohols
12.7K
In this lesson, the oxidation of alcohols is discussed in depth. The various reagents used for oxidation of primary and secondary alcohols are detailed, and their mechanism of action is provided.
The process of oxidation in a chemical reaction is observed in any of the three forms:
The process of oxidation in a chemical reaction is observed in any of the three forms:
12.7K
Structure and Nomenclature of Thiols and Sulfides
4.5K
Thiols and sulfides are sulfur analogs of alcohols and ethers, respectively, where the sulfur atom takes the place of the oxygen atom. Thus, thiols are generally represented as RSH, where R is an alkyl substituent and —SH is the functional group. On the other hand, in sulfides, the central sulfur atom is bonded to two hydrocarbon groups on either side. Depending upon the type of group, sulfides can be either symmetrical or asymmetrical. Both thiols and sulfides display a bent geometry,...
4.5K
![[DPEPhosbcpCu]PF6: A General and Broadly Applicable Copper-Based Photoredox Catalyst](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F59739.jpg&w=3840&q=50)