单原子催化剂在催化活性细胞上的环境合成,用于化学酶级联
Yuqing Zhang1, Xiaoyang Yue2,3, Shuling Zhang1
1School of Chemical Engineering and Technology, Hebei University of Technology, Tianji, China.
Nature communications
|February 19, 2026
概括
微生物细胞现在可以高效地合成单原子催化剂 (SAC). 这些新型化学生物催化剂对具有挑战性的化学反应表现出极好的选择性,提供了一个多功能新平台.
科学领域:
- 生物催化剂是一种生物催化剂.
- 纳米材料科学 科学 纳米材料科学
- 不同质的催化剂.
背景情况:
- 微生物细胞是金属纳米粒子合成的成熟平台.
- 微生物细胞用于单原子催化剂 (SAC) 生产的应用尚未得到充分研究.
研究的目的:
- 开发一种使用微生物细胞进行高负荷SACs环境合成的简单方法.
- 通过将SAC与酶过度表达细胞集成,创建化疗生物双功能催化剂 (SAC@cell).
- 研究SAC形成的机制和由此产生的混合材料的催化性能.
主要方法:
- 在特定酶过度表达的微生物细胞上的金属离子的现场减少.
- 计算调查以了解SAC的协调和形成.
- 使用酒精脱酶 (ADH) 过度表达的细胞与单原子 (SA-Pd) 进行不对称的还原反应.
- 细胞表面涂以提高稳定性和可重复使用性.
主要成果:
- 在高负荷 (>4.0 wt%) 的情况下实现了SACs的环境合成.
- 通过计算分析确定了细胞上的表面氧原子对于SAC形成至关重要.
- 在使用SA-Pd@cell-ADH的α,β-不和子的不对称减少中显示出高的regio和enantio选择性.
- 通过二氧化涂层提高了化疗-生物混合物的稳定性和可重复使用性.
结论:
- 微生物细胞为制造SAC提供了一个多功能平台.
- 开发的方法使得能够创建具有高性能的集成化学生物催化剂.
- 这种方法通过将单原子催化和生物催化结合起来,为设计先进的催化系统开辟了新的途径.
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