4 years ago

Metal-Organic Framework Wears a Protective Cover for Improved Stability

Metal-Organic Framework Wears a Protective Cover for Improved Stability
Xinyi Chen, Linjie Li, Tao Zhang, Meng Shao, Hongfeng Li, Bing Zheng, Weiwei Xiong, Yu Hu, Fengwei Huo, Jiena Weng, Qinjie Du, Weina Zhang, Binghua Zou, Suoying Zhang
Metal-organic frameworks (MOFs) with an ordered channel and porosity show great promise for a myriad of purposes. Unfortunately, the coordination bond of metal ions and organic ligands easily weakens in unfavorable environments, which poses a key problem in expanding the application of MOFs. Herein, we report a general and efficient strategy to enhance the stability and preserve the porosity of MOFs by coating them with reduced graphene oxide (rGO). The prepared hybrid material consisted of MOFs and rGO, as the core and the protective shell, respectively. It is worth noting that the obtained MOFs@rGO composite material maintained a well-defined crystal structure and showed good catalytic activity as well as enhanced stability. Notably, this novel and general method of coating MOFs with a thin protective rGO shell will broaden the application fields of MOFs and open up a new avenue for the research of MOFs. Protected and stable: The reduced graphene oxide (rGO) coated metal-organic frameworks (MOFs@rGO) was obtained by simply coating MOFs particles with rGO. The hybrid material consisted of MOFs and rGO, as the core and the protective shell, respectively. Notably, the strategy of coating rGO does not affect the transition of the molecules and thus the porosity of the MOFs can be maintained, which enhances their stability.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/chem.201701314

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