School of Chemistry, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ, UK.
Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.
Angew Chem Int Ed Engl. 2022 Oct 10;61(41):e202210572. doi: 10.1002/anie.202210572. Epub 2022 Sep 5.
Nitrous oxide (N O) is a potent greenhouse and ozone-reactive gas for which emissions are growing rapidly due to increasingly intensive agriculture. Synthetic catalysts for N O decomposition typically contain precious metals and/or operate at elevated temperatures driving a desire for more sustainable alternatives. Here we demonstrate self-assembly of liposomal microreactors enabling catalytic reduction of N O to the climate neutral product N . Photoexcitation of graphitic N-doped carbon dots delivers electrons to encapsulated N O Reductase enzymes via a lipid-soluble biomolecular wire provided by the MtrCAB protein complex. Within the microreactor, electron transfer from MtrCAB to N O Reductase is facilitated by the general redox mediator methyl viologen. The liposomal microreactors use only earth-abundant elements to catalyze N O removal in ambient, aqueous conditions.
一氧化二氮（N O）是一种强效的温室气体和臭氧反应性气体，由于农业日益集约化，其排放量迅速增加。用于 N O 分解的合成催化剂通常含有贵金属，或者在高温下运行，这促使人们寻求更可持续的替代品。在这里，我们展示了脂质体微反应器的自组装，使 N O 的催化还原为气候中性产物 N 成为可能。石墨氮掺杂碳点的光激发通过 MtrCAB 蛋白复合物提供的脂溶性生物分子线将电子传递到封装的 N O 还原酶。在微反应器内，MtrCAB 到 N O 还原酶的电子转移由通用氧化还原介体甲紫精促进。脂质体微反应器仅使用地球丰富的元素在环境、水相条件下催化 N O 的去除。
