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Catalysis02:50

Catalysis

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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.
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Introduction to Mechanisms of Enzyme Catalysis01:13

Introduction to Mechanisms of Enzyme Catalysis

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For many years, scientists thought that enzyme-substrate binding took place in a simple "lock-and-key" fashion. This model stated that the enzyme and substrate fit together perfectly in one instantaneous step. However, current research supports a more refined view scientists call induced fit. The induced-fit model expands upon the lock-and-key model by describing a more dynamic interaction between enzyme and substrate. As the enzyme and substrate come together, their interaction causes...
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Dimensional Analysis03:40

Dimensional Analysis

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Dimensional analysis, also known as the factor label method, is a versatile approach for mathematical operations. The main principle behind this approach is: the units of quantities must be subjected to the same mathematical operations as their associated numbers. This method can be applied to computations ranging from simple unit conversions to more complex and multi-step calculations involving several different quantities and their units.
Conversion Factors and Dimensional Analysis
The unit...
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Dimensional Analysis01:27

Dimensional Analysis

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Dimensional analysis is a valuable technique in fluid mechanics for simplifying complex problems by reducing them into dimensionless groups. These groups capture the essential relationships between the variables involved, allowing researchers and engineers to analyze fluid flow without dealing with each variable individually. This approach reduces the number of independent variables, allowing for easier analysis and better understanding of physical phenomena.
In fluid mechanics, dimensional...
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Extraction: Advanced Methods00:56

Extraction: Advanced Methods

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Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
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Overview of Advanced Functional Groups02:22

Overview of Advanced Functional Groups

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Functional groups are groups of atoms with specific chemical properties that occur within organic molecules and are sometimes denoted as “R”. Functional groups can “functionalize” a compound by enabling it to adopt different physical and chemical properties.
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Updated: Jan 21, 2026

Synthesis of Bimetallic Pt/Sn-based Nanoparticles in Ionic Liquids
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Low Dimensional Platinum-Based Bimetallic Nanostructures for Advanced Catalysis.

Qi Shao1, Pengtang Wang1, Ting Zhu1

  • 1College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou , Jiangsu 215123 , China.

Accounts of Chemical Research
|August 10, 2019
PubMed
Summary
This summary is machine-generated.

Low-dimensional platinum (Pt)-based bimetallic nanomaterials offer enhanced catalytic performance for renewable energy applications. Strain, surface, and interface engineering optimize Pt utilization and activity, reducing reliance on expensive Pt resources.

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Area of Science:

  • Materials Science
  • Catalysis
  • Renewable Energy

Background:

  • Platinum (Pt)-based catalysts are crucial for renewable energy storage and conversion.
  • High cost and limited resources of Pt necessitate strategies for maximizing catalytic efficiency with reduced Pt content.
  • Low-dimensional Pt-based bimetallic nanomaterials show promise due to unique atomic and electronic structures.

Purpose of the Study:

  • To review recent advances in low-dimensional Pt-based bimetallic nanomaterials as catalysts.
  • To highlight the role of strain, surface, and interface engineering in enhancing catalytic performance.
  • To explore applications in electrocatalysis and heterogeneous reactions for renewable energy.

Main Methods:

  • Focus on engineering strategies: strain, surface, and interface modification of nanomaterials.
  • Analysis of how these strategies regulate electronic structure, active sites, and synergistic effects.
  • Investigation of low-dimensional confinement effects on catalytic properties.

Main Results:

  • Strain engineering modifies the electronic structure by altering the d-band center, optimizing adsorption strength.
  • Surface engineering, including high-index facets and Pt-rich surfaces, increases active site density and Pt atom utilization.
  • Interface engineering with composition-segregated nanostructures enhances synergistic effects, tunes electronic properties, and improves stability.

Conclusions:

  • Rational design of low-dimensional Pt-based bimetallic nanomaterials using strain, surface, and interface engineering leads to superior catalytic properties.
  • These engineered nanomaterials offer high activity, long-term stability, and enhanced selectivity for energy conversion reactions.
  • This approach facilitates a deeper understanding of structure-performance relationships and expands access to efficient Pt-based catalysts.