Ultrahigh‐Uptake Capacity‐Enabled Gas Separation and Fruit Preservation by a New Single‐Walled Nickel–Organic Framework
Yong‐Peng Li, Yong‐Ni Zhao, Shu‐Ni Li, Daqiang Yuan, Yu‐Cheng Jiang, Xianhui Bu, Man‐Cheng Hu, Quan‐Guo Zhai
Abstract
Abstract High gas‐uptake capacity is desirable for many reasons such as gas storage and sequestration. Moreover, ultrahigh capacity can enable a practical separation process by mitigating the selectivity factor that sometimes compromises separation efficiency. Herein, a single‐walled nickel–organic framework with an exceptionally high gas capture capability is reported. For example, C 2 H 4 and C 2 H 6 uptake capacities are at record‐setting levels of 224 and 289 cm 3 g −1 at 273 K and 1 bar (169 and 110 cm 3 g −1 at 298 K and 1 bar), respectively. Such ultrahigh capacities for both gases give rise to an excellent separation performance, as shown for C 2 H 6 /C 2 H 4 with breakthrough times of 100, 60 and 30 min at 273, 283 and 298 K and under 1 atm. This new material is also shown to readily remove ethylene released from fruits, and once again, its ultrahigh capacity plays a key role in the extraordinary length of time achieved in the preservation of the fruit freshness.