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Polymers02:34

Polymers

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The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the...
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Solution Composition During Acid/Base Titrations01:17

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The titration of a weak acid with a strong base results in the formation of water and the conjugate base of the acid. For instance, titrating acetic acid with sodium hydroxide leads to the formation of water and sodium acetate. A solution of acetic acid and sodium acetate constitutes a buffer whose relative concentration at different stages of the titration is indicated by the α values, which represent percentages of the weak acid and its conjugate base.
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Matter: Pure Substances and Mixtures
According to its composition, the matter can be classified into two broad categories — pure substances and mixtures. 
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Conduct disorder is a complex mental health diagnosis characterized by a repetitive and persistent pattern of behavior that violates societal norms, the rights of others, or age-appropriate rules. The diagnostic criteria for conduct disorder require the presence of at least three problematic behaviors within the past 12 months, with at least one occurring in the past six months. These behaviors are grouped into four categories: aggression toward people and animals; destruction of property;...
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Autorhythmicity is a term that refers to the heart's inherent ability to generate electrical signals and instigate muscle contractions. This self-regulating conduction system within the heart consists of two key components: the pacemaker cells and specialized conducting cells.
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Recent Developments about Conductive Polymer Based Composite Photocatalysts.

Sher Ling Lee1, Chi-Jung Chang2

  • 1Department of Chemical Engineering, Feng Chia University, 100, Wenhwa Road, Seatwen, Taichung 40724, Taiwan. sherlinglee0209@gmail.com.

Polymers
|April 10, 2019
PubMed
Summary
This summary is machine-generated.

Conductive polymers enhance composite photocatalysts for degrading pollutants, fighting bacteria, and producing hydrogen. These materials improve performance by optimizing charge separation and light absorption.

Keywords:
Conductive polymerantibacterialdegradationhydrogen productionphoto-corrosionphotocatalystphotogenerated electronsynergic effect

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Area of Science:

  • Materials Science
  • Chemistry
  • Environmental Science

Background:

  • Conductive polymers like polyaniline (PANI), polypyrrole (PPy), poly(3,4-ethylenedioxythiophene) (PEDOT), and polythiophene (PTh) are integral to advanced materials.
  • Composite photocatalysts integrating conductive polymers with semiconductor nanomaterials show promise for various applications.
  • A comprehensive review on conductive polymer-based composite photocatalysts is currently lacking.

Purpose of the Study:

  • To systematically review the applications of conductive polymers in composite photocatalysts.
  • To explore their use in photocatalytic degradation of hazardous chemicals, antibacterial applications, and hydrogen production.
  • To elucidate the mechanisms behind their enhanced photocatalytic activity.

Main Methods:

  • Systematic survey and analysis of existing literature on conductive polymer-based composite photocatalysts.
  • Examination of preparation methods, material morphologies, and photocatalytic performances.
  • Analysis of band structures to understand synergistic effects and reaction mechanisms.

Main Results:

  • Significant synergistic effects observed between conductive polymers and semiconductor nanomaterials.
  • Enhanced visible-light driven photocatalytic activity demonstrated across various applications.
  • Improved charge carrier separation, extended light absorption, and increased reactant adsorption noted.

Conclusions:

  • Conductive polymers significantly boost the performance of composite photocatalysts.
  • Mechanisms include enhanced charge separation, broader light absorption, and improved reactant adsorption.
  • This review offers a framework for understanding conductive polymer contributions to photocatalysis.