Ultrahigh-Uptake Capacity-Enabled Gas Separation and Fruit Preservation by a New Single-Walled Nickel-Organic Framework.

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.
Competing Interests: The authors declare no conflict of interest.
(© 2021 The Authors. Advanced Science published by Wiley‐VCH GmbH.)