氧化铁促进的光化学氧降解为过氧化 (H2O2)
Thomas Freese1, Jelmer T Meijer1, Maria B Brands2
1Stratingh Institute for Chemistry, University of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands b.l.feringa@rug.nl.
EES catalysis
|January 15, 2024
概括
可持续生产过氧化 (H2O2) 是通过使用地球上丰富的氧化铁纳米颗粒来实现的. 这种绿色化学方法为在可见光下生成H2O2提供了一个有希望的替代方案,即使使用阳光和海水.
科学领域:
- 绿色化学 绿色化学
- 材料科学 材料科学 材料科学
- 光催化作用的光催化
背景情况:
- 过氧化 (H2O2) 是一种多用途的绿色氧化剂和潜在的能量载体.
- 目前的H2O2生产方法,如 antraquinone 工艺,是能源密集的,并产生废物.
- 光化学生产提供了一个可持续的替代方案,与绿色化学原则保持一致.
研究的目的:
- 开发一种可持续的催化剂,用于光化学H2O2生产,使用地球上丰富的材料.
- 为了研究氧化铁纳米颗粒的效率和可重复使用性,用于H2O2合成.
- 探索在各种条件下生产H2O2的可行性,包括阳光和海水.
主要方法:
- 铁氧化物 (FeO) 纳米颗粒 (NP) 的合成来自丰富的地球和生物来源.
- 用可见光 (445 nm) 减少氧气到H2O2的光化学方法.
- 用实验和计算方法对催化剂性质的表征和机械学研究.
主要成果:
- 开发的可回收的氧化铁NP可以达到>99%的H2O2.2%的选择性.
- 在可见光下获得0.11%的H2O2生产的表面量子产量 (AQY).
- 在阳光照射和海水中证明了H2O2的产生,生产率为1.7 ± 0.3 mmol g-1 L-1 h-1.
结论:
- 用铁和生物来源开发可持续催化剂的简单和通用方法.
- 光化学H2O2生产是一种可行的绿色替代传统方法.
- 开发的氧化铁NP显示出对高效和环保的H2O2产生有希望.
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