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Precipitation of Ions03:11

Precipitation of Ions

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Predicting Precipitation
The equation that describes the equilibrium between solid calcium carbonate and its solvated ions is:
28.0K
Solubility Equilibria03:07

Solubility Equilibria

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Solubility equilibria are established when the dissolution and precipitation of a solute species occur at equal rates. These equilibria underlie many natural and technological processes, ranging from tooth decay to water purification. An understanding of the factors affecting compound solubility is, therefore, essential to the effective management of these processes. This section applies previously introduced equilibrium concepts and tools to systems involving dissolution and precipitation.
The...
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Predicting Products: Substitution vs. Elimination02:52

Predicting Products: Substitution vs. Elimination

11.8K
When a nucleophile and an alkyl halide react, nucleophilic substitution and β-elimination reactions compete to generate products.
The following factors can influence the mechanisms competing against each other:
11.8K
Acid Halides to Esters: Alcoholysis01:12

Acid Halides to Esters: Alcoholysis

2.9K
Alcoholysis is a nucleophilic acyl substitution reaction in which an alcohol functions as a nucleophile. Acid halides react with alcohol to produce esters. The mechanism proceeds in three steps:
2.9K

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相关实验视频

Updated: Jul 14, 2025

Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films
08:12

Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films

Published on: September 8, 2017

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对于水性稳定化物矿材料的加速多溶剂预测.

Yiru Huang1, Shenyue Li1, Lei Zhang1

  • 1Department of Materials Physics, School of Chemistry and Materials Science, Nanjing University of Information Science & Technology, 210044, Nanjing, China.

ACS applied materials & interfaces
|October 9, 2023
PubMed
概括

机器学习使用新型溶剂混合物预测稳定的矿薄膜. 一种二溶剂系统显著提高了水中的光电子稳定性,克服了矿材料的工业部署挑战.

科学领域:

  • 材料科学 材料科学 材料科学
  • 化学工程是化学工程的重要组成部分.
  • 计算化学计算化学

背景情况:

  • 化矿材料具有有前途的光电子性能,但稳定性不佳,阻碍了工业应用.
  • 传统的试错方法不足以探索溶剂修饰剂的庞大设计空间,以稳定矿.

研究的目的:

  • 采用机器学习来预测在恶劣条件下的稳定,溶剂修饰的矿膜.
  • 确定新型的二溶剂系统,以提高矿材料的稳定性和性能.

主要方法:

  • 使用额外树机器学习模型进行组合溶剂设计.
  • 创建了6720个具有预测水性稳定性标签的五溶剂/矿系统的数据集.
  • 通过光电化学实验验验证了机器学习预测.

主要成果:

  • 确定了一种特定的化溶剂系统 (DMSO + DMF + 多 + NMP + GBL),可以显著改善甲基胺 (CH3NH3PbI3) 的水稳定性.
  • 在验证机器学习模型预测方面实现了80%的实验准确性.
  • 在恶劣条件下,为优化矿膜的水性光电流量增加了1000倍.

结论:

  • 机器学习是加速材料科学中的溶剂设计的有效工具.
关键词:
数据驱动的数据驱动.化物矿石的材料是化物矿石.机器学习是机器学习.溶剂设计 溶剂设计稳定的稳定性 稳定的稳定性

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Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells
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Last Updated: Jul 14, 2025

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  • 开发的方法可以发现稳定的化 PeroVskite 材料,用于实际应用.
  • 鉴定到的二溶剂系统代表了提高矿稳定性和性能方面的重大进步.