@article{Zhang2019, 
author = {Xiaofei Zhang and Lin Chang and Zhongjie Yang and Yanan Shi and Chang Long and Jianyu Han and Binhao Zhang and Xueying Qiu and Guodong Li and Zhiyong Tang},
title = {Facile synthesis of ultrathin metal-organic framework nanosheets for Lewis acid catalysis},
year = {2019},
journal = {Nano Research},
volume = {12},
number = {2},
pages = {437-440},
keywords = {metal-organic framework, ultrathin nanosheet, Lewis acid site, Knoevenagel condensation},
url = {https://www.sciopen.com/article/10.1007/s12274-018-2235-1},
doi = {10.1007/s12274-018-2235-1},
abstract = {Ultrathin metal-organic framework (MOF) nanosheets are attracting great interest in catalysis due to their unique and intriguing two-dimensional (2D) features. Although many progresses have been achieved, it is still highly desirable to develop novel strategies for controllable synthesis of the well-defined ultrathin MOF nanosheets. Herein we report a polyvinylpyrrolidone (PVP)-assisted route to synthesize the ultrathin Ni-MOF nanosheets characteristic of 1.5 nm in thickness, in which PVP is reacted with 2-aminoterephthalic acid (H2BDC-NH2) via formation of C=N bond, followed by coordination with Ni2+ ions to form the ultrathin MOF nanosheets. Impressively, when used in the Knoevenagel condensation reactions of propane dinitrile with different aldehydes, ultrathin Ni-MOF nanosheets display the significantly enhanced catalytic activity and good stability in respect with the bulk Ni-MOF, mainly owing to the exposed active sites as well as facile mass transfer and diffusion of substrates and products.}
}