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Bioreactor Controls-II01:18

Bioreactor Controls-II

In aerobic fermentations, oxygen is vital for microbial growth and metabolite production. Since air comprises only about 20% oxygen and the gas is poorly soluble in water—just 9 ppm at 20°C—supplying sufficient oxygen becomes a critical challenge, especially in high-demand processes like yeast growth or citric acid production. Even a fully saturated broth may offer only a few seconds of oxygen availability.To address this, sterile or scrubbed air is introduced into the fermentor via a sparger...

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相关实验视频

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Synthesis and Reaction Chemistry of Nanosize Monosodium Titanate
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通过引入 NiO 支持的半孔二氧化物来提高氧气进化性能.

Abdulrahman Y Alzahrani1, Mohammed A Bahattab1, Mohammed Mushab2

  • 1Refining and Petrochemical Technologies Institute (RPTI), King Abdulaziz City for Science and Technology (KACST), P.O Box 6086, Riyadh, 11442, Saudi Arabia.

ChemistryOpen
|October 10, 2025
PubMed
概括

这项研究开发了氧化物合的半孔二氧化物 (x-NTO) 用于高效的氧化演化反应 (OER). 3.0%重量氧化物添加材料 (3.0-NTO) 在清洁能源应用中表现出卓越的OER活性和耐用性.

关键词:
这是一种性溶液.它们是半孔的,是中孔的.氧化的氧化是什么氧气的进化 氧气的进化二氧化二氧化的使用方法

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科学领域:

  • 材料科学 材料科学 材料科学
  • 电化学 电化学 电化学
  • 可持续能源 可持续能源

背景情况:

  • 水电解对于可持续的和氧生产至关重要.
  • 开发高效的电催化剂是推动清洁能源技术发展的关键.

研究的目的:

  • 合成氧化物合的半孔二氧化物 (x-NTO) 以提高氧化演化反应 (OER) 的性能.
  • 调查氧化兴奋剂度对OER活性和稳定性的影响.

主要方法:

  • 使用乙酸辅助软模板方法与聚乙烯利胺合成半孔性x-NTO.
  • 在1M KOH溶液中合成的催化剂的评估OER活性和耐用性.

主要成果:

  • 与纯TiO2.2相比,所有合成的x-NTO材料都显示出增强的OER活性.
  • 含有3.0%重量氧化的材料 (3.0-NTO) 呈现出最高的OER活性,发作潜力下降0.270V.
  • 3.0-NTO在10 mA cm−2时显示出340 mV的超电位,其质量活动为66.50 mA mg−1.1.
  • 3.0-NTO电极在电解的12小时内保持稳定.

结论:

  • 氧化的兴奋剂显著提高了OER表现的中等的TiO2.2.
  • 3.0-NTO催化剂显示出作为能源转换技术的持久电催化剂的巨大潜力.