一个双碳化物异构接口驱动的广泛pH范围的燃料生产
Disha Sonwani1, Bhojkumar Nayak1, Neeraj Mishra2
1Department of Chemistry, Indian Institute of Science Education and Research, Pune, Dr. Homi Bhabha Road, Pune- 411008, India.
Langmuir : the ACS journal of surfaces and colloids
|August 21, 2025
概括
研究人员开发了一种新的双碳化物异构催化剂,用于高效的生产. 这种先进的电催化剂在所有pH水平上都表现出卓越的性能,为可持续能源解决方案提供成本效益和稳定的替代品.
科学领域:
- 材料科学
- 电化学
- 催化剂
背景情况:
- 可持续的生产对于一个碳中和的未来至关重要.
- 对于演化反应 (HER) 需要高效和成本效益的电催化剂.
- 目前的催化剂在不同的pH环境中经常面临稳定性或性能限制.
研究的目的:
- 在广泛的pH范围内开发一种具有高HER性能的新型电催化剂.
- 研究接口工程在增强催化活性中的作用.
- 展示一种经济高效且稳定的替代品.
主要方法:
- 一个双碳化物异构催化剂的合成.
- 在酸性,中性和性电解质中对催化剂进行电化学测试.
- 密度函数理论 (DFT) 计算分析反应能量和电子结构.
- 在盐水电解仪中进行长期稳定性测试.
主要成果:
- 双碳化物异构催化剂表现出异常的HER性能,超电位低,与相美.
- 催化剂在所有测试的pH范围 (pH-通用) 中表现出显著的稳定性和活性.
- 由于异质界面的协同效应,DFT计算证实了优化的吸附/脱吸能量 (ΔGH* ≈0.34 eV).
- 在盐水电解器中,催化剂在200小时内保持一致的性能.
结论:
- 双碳化物异构的接口工程是先进的HER电催化剂的一个有前途的策略.
- 开发的催化剂为可持续生产提供了成本高效,稳定和高性能的解决方案.
- 这项工作为利用与贵金属竞争的非贵金属催化剂铺平了道路.
相关概念视频
Hydrogen Bonds
109.5K
Hydrogen bonds are weak attractions between atoms that have formed other chemical bonds. One of these atoms is electronegative, like oxygen, and has a partial negative charge. The other is a hydrogen atom that has bonded with another electronegative atom and has a partial positive charge.
Hydrogen Bonds Control the World!
Because hydrogen has very weak electronegativity when it binds with a strongly electronegative atom, such as oxygen or nitrogen, electrons in the bond are unequally shared....
Hydrogen Bonds Control the World!
Because hydrogen has very weak electronegativity when it binds with a strongly electronegative atom, such as oxygen or nitrogen, electrons in the bond are unequally shared....
109.5K
pH
121.5K
The potential of hydrogen (pH) is a measure of the acidity or basicity of a water-based solution determined by the concentration of hydronium ions (H3O+). In one liter of pure water at neutral pH, there are 1×10−7 moles of hydronium ions. However, the extensive range of hydronium ion concentrations present in water-based solutions makes measuring pH in moles cumbersome. Therefore, a pH scale was developed to convert moles of hydronium ions into the negative logarithm of the hydronium...
121.5K
Batteries and Fuel Cells
24.1K
A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
24.1K
Reduction of Alkenes: Catalytic Hydrogenation
12.4K
Alkenes undergo reduction by the addition of molecular hydrogen to give alkanes. Because the process generally occurs in the presence of a transition-metal catalyst, the reaction is called catalytic hydrogenation.
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the...
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the...
12.4K
Heterogeneous Catalysis
141
Heterogeneous catalysis involves a catalyst in a different phase from the reactants. It is a process where the catalyst and the reactants are in distinct phases, typically solid and gas or liquid.Most heterogeneous catalysts are metals, metal oxides, or acids. The list includes transition metals like iron (Fe), cobalt (Co), nickel (Ni), palladium (Pd), platinum (Pt), chromium (Cr), manganese (Mn), tungsten (W), silver (Ag), and copper (Cu). These metals possess partially vacant d orbitals that...
141
Production of Organic Acids
105
Lactic acid, an important organic acid extensively applied in food, pharmaceutical, and biodegradable polymer industries, is primarily produced via microbial fermentation. This method is favored over chemical synthesis due to its environmental sustainability and capacity for enantiomerically pure product formation. Among various microbial processes, the fermentation of starch-based substrates stands out due to the abundance and renewability of raw materials like corn and potatoes.Hydrolysis of...
105


