Liu Jian, Huang Jianhui, Zhou Han, Antonietti Markus
Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces , 14424 Potsdam, Germany.
ACS Appl Mater Interfaces. 2014 Jun 11;6(11):8434-40. doi: 10.1021/am501319v. Epub 2014 May 14.
Uniform graphitic carbon nitride nanorods (CNR) were facilely obtained by a morphology-preserving strategy by templating a chiral mesostructured silica nanorod. The hexagonal mesostructured pore structures of one-dimensional silica nanorods can provide nanoconfinement space for carbon nitride condensation to perfect layered structures. CNR demonstrated excellent photocatalytic capability in generating hydrogen from water even with a small specific surface area, compared with its mesoporous counterpart. For further application demonstration, the CNR was used for photocatalytic regeneration of NAD(+) to NADH, the biological form of hydrogen. The in situ NADH regeneration system was further coupled with l-glutamate dehydrogenase for sustainable generation of l-glutamate from α-ketoglutarate. The high yield and high efficiency obtained here point a high-throughput and sustainable way for practical enzymatic applications.
通过以手性介孔结构二氧化硅纳米棒为模板的形态保持策略，轻松获得了均匀的石墨相氮化碳纳米棒（CNR）。一维二氧化硅纳米棒的六方介孔结构孔道可为氮化碳缩合形成完美层状结构提供纳米限域空间。与介孔氮化碳相比，即使比表面积较小，CNR在光催化水制氢方面仍表现出优异的光催化能力。为了进一步进行应用演示，将CNR用于将NAD(+)光催化再生为NADH（氢的生物形式）。原位NADH再生系统进一步与L-谷氨酸脱氢酶偶联，以从α-酮戊二酸可持续生成L-谷氨酸。此处获得的高产率和高效率为实际酶应用指明了一条高通量且可持续的途径。
