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相关概念视频

Ligand Binding Sites02:40

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Proteins are dynamic macromolecules that carry out a wide variety of essential processes; however, the activities of most proteins depend on their interactions with other molecules or ions, known as ligands.
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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.
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A hydrogen bond is formed when a weakly positive hydrogen atom already bonded to one electronegative atom (for example, the oxygen in the water molecule) is attracted to another electronegative atom from another polar molecule, such as water (H2O), hydrogen fluoride (HF), or ammonia (NH3). The huge electronegativity difference between the H atom (2.1) and the atom to which it is bonded (4.0 for an F atom, 3.5 for an O atom, or 3.0 for an N atom), combined with the very small size of an H atom...
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Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
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采用基光催化剂的高效太阳能驱动的转移与工程基础站点

Yitao Dai1,2, Chao Li1, Yanbin Shen3

  • 1SynCat@Beijing, Synfuels China Technology Co. Ltd. , Leyuan South Street II, No. 1, Yanqi Economic Development Zone C# , Huairou District, Beijing 101407 , China.

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PubMed
概括
此摘要是机器生成的。

在可见光下有效地驱动光催化转移的新材料. 这种无贵金属的催化剂具有很高的量子效率和稳定性,

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科学领域:

  • 材料科学
  • 光催化
  • 有机化学

背景情况:

  • 涉及转移 (HT) 的光催化有机转化至关重要,但由于可见光下的低效率和选择性而经常受到限制.
  • 开发高效和稳定的光催化剂对于可持续的化学合成至关重要.

研究的目的:

  • 设计一种新的无贵金属氧化物光催化剂,
  • 在可见光照射下研究其在各种光催化转移反应中的效率和选择性.

主要方法:

  • 基位工程氧化 (Bi24O31Br10(OH) 的合成.
  • 在可见光下测试光催化剂的还原 (酸转化为酸) 和氧化 (酸转化为酸,酸转化为酸,醇转化为酸) 反应.
  • 量子效率的量化和稳定性和可扩展性的评估.

主要成果:

  • 开发的Bi24O31Br10(OH)δ光催化剂有效地加速了降解和氧化反应中的HT步骤.
  • 对于酸的降解,获得了42% (410nm) 和32% (450nm) 的高量子效率.
  • 该材料在可见光和太阳辐射下表现出色的升级性能和稳定性.

结论:

  • 基站工程氧化是一种高效和稳定的无贵金属光催化剂,用于转移反应.
  • 由于其性能和稳定性,该材料具有重要的工业应用潜力.