在H2驱动下减少CO2以利用细菌等离子体膜形成
Mohammad Moniruzzaman1, Hung Khac Nguyen2, Yu Kiyasu3
1Mitsui Chemicals, Inc.-Carbon Neutral Research Center (MCI-CNRC), Kyushu University, Japan; International Institute for Carbon-Neutral Energy Research (I2CNER), Kyushu University, Japan.
Bioresource technology
|October 26, 2023
概括
研究人员开发了一种新的方法,使用细菌等离子体膜高效地生产格式. 这种天然的纳米设备将二氧化碳和转化为具有高选择性和多种用途的稳定性.
科学领域:
- 生物催化剂是一种生物催化剂.
- 纳米技术纳米技术
- 微生物生物化学 微生物生物化学
背景情况:
- 细菌膜可以通过控制物质的进入来限制催化效率.
- 孤立的细菌血具有作为生物催化剂天然纳米设备的潜力.
- 稳氧[NiFe]酶和[Mo]甲酸脱酶是二氧化碳转化中的关键酶.
研究的目的:
- 介绍一种使用分离的细菌血膜进行高效格式生产的模型系统.
- 为了研究一种天然纳米设备的催化效率和选择性,用于H2驱动的CO2转化.
- 评估固定细菌血膜的稳定性,以进行形式合成.
主要方法:
- 从Citrobacter sp.中分离了血膜. S-77.S-77.S-77.S-77.S-77.S-77.S-77.S-77.S-77.S-77.S-77.S-77.S-77.S-77.S-77.S-77.S-77.S-77.S-77.S-77.S-77.S-77.S-77.S-77.
- 将[NiFe]酶和[Mo]甲酸脱酶集成到天然的催化纳米装置中.
- 用多壁碳纳米管固定膜,并在凝-水凝珠中封装.
主要成果:
- 自然的纳米装置催化了二氧化碳的H2驱动转化,以817mmol·L−1·gprotein−1·h−1.1的速度形成.
- 该过程在温和条件下 (30°C,pH7.0,0.1MPa) 显示出高的选择性和效率.
- 固定催化剂在10次重复使用中保持稳定,表明了强度.
结论:
- 细菌等离子膜可以作为高效和有选择性的天然纳米设备来生产格式.
- 固定化策略可以提高生物催化剂的稳定性和可重复使用性.
- 这项研究报告了第一次成功地使用细菌等离子膜来有效地将H2和CO2转化为形式.
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