制造逆光硫化,并将其用作H2进化的催化剂
Thai D Nguyen1, Huong T L Phung1,2, Duc N Nguyen1
1University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology 18 Hoang Quoc Viet Hanoi Vietnam nguyen-duc.anh@usth.edu.vn tran-dinh.phong@usth.edu.vn.
RSC advances
|September 22, 2023
概括
无形和晶硫化物 (MoS和MoS2) 薄膜使用反向珀模板制造. 最佳的薄膜厚度最大限度地提高了有效的演化反应催化剂的活性位点.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 催化剂是一种催化剂.
背景情况:
- 没有贵金属的电催化剂对于可持续的生产至关重要.
- 硫化 (MoS和MoS2) 对进化反应 (HER) 具有有前途的催化活性.
- 电化学活性在很大程度上取决于活性站点可访问的表面积.
研究的目的:
- 使用聚乙烯纳米粒子模板制造正规的反向珀硫化 (MoS和MoS2) 薄膜.
- 为了研究多孔结构,薄膜厚度和材料相对HER性能的影响.
- 为了确定最佳的薄膜厚度,以最大限度地提高催化效率.
主要方法:
- 使用聚乙烯纳米粒子 (30-90nm) 作为硬模板制造反向珀MoS和MoS2薄膜.
- 在酸性电解质中的演变反应的电化学特征.
- 薄膜厚度的系统变化和多孔结构影响的分析.
主要成果:
- 成功地制造了正规的反向珀MoS和MoS2膜.
- 证明了这些薄膜对进化反应的催化活性.
- 确定了约300nm的催化有效厚度,允许电解质完全透和最大的活性部位暴露.
结论:
- 反向珀模板是创建高表面积硫化物催化剂的有效方法.
- 薄膜厚度通过控制电解质进入活性部位,显著影响HER的性能.
- 厚度为300nm,通过确保完全利用催化场所,优化了进化反应.
更多相关视频
06:32A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions
Published on: August 17, 2016
19.6K
10:19Synthesis and Testing of Supported Pt-Cu Solid Solution Nanoparticle Catalysts for Propane Dehydrogenation
Published on: July 18, 2017
12.0K
相关概念视频
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
3.3K
Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
3.3K
Catalysis
27.0K
The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.
27.0K
