Development of visible-light-responsive metal-organic frameworks (MOFs) for promising solar energy conversion has inspired continuous interest, but it still suffers from poor stability especially in aqueous solution and/or under photoirradiation due to their relatively labile coordination bonds. Herein, a new synthesized layered Mn-based MOF (Mn-TBAPy-BK) and its exfoliated two-demensional nanosheets (Mn-TBAPy-NS) are revealed to be highly stable no matter in aqueous solution with wide pH region or under visible light irradiation. As expected, the exfoliated Mn-TBAPy-NS exhibits enhanced surface area, shortened charge transfer distance, and superior charge separation with respect to the bulk one. Moreover, the as-obtained nanosheets can be employed as effective building block for nanocomposite and heterostructure assembly to further promote charge separation as well as solar hydrogen production from aqueous solution under visible light. The finding of water stable MOF nanosheet under visible light demonstrates its promising future for solar energy conversion.

可见光响应性金属有机骨架（MOF）的发展为有前途的太阳能转换带来了持续的兴趣，但由于它们的相对较弱的配位键，其稳定性仍然很差，尤其是在水溶液中和/或在光辐照下。在此，无论在宽pH范围的水溶液中还是在可见光下，新的合成的层状Mn基MOF（Mn-TBAPy-BK）及其剥离的二维纳米片（Mn-TBAPy-NS）都显示出高度的稳定性。辐射。不出所料，相对于主体，剥落的Mn-TBAPy-NS表现出增加的表面积，缩短的电荷转移距离和优异的电荷分离。此外，所获得的纳米片可用作纳米复合材料和异质结构组装的有效构件，以进一步促进电荷分离以及在可见光下从水溶液中产生太阳能氢。在可见光下发现水稳定的MOF纳米片的发现证明了其在太阳能转化方面的广阔前景。