The cobalt carbonate hydroxide nanowires (Co(CO3)0.5(OH)·0.11H2O, CCO NWs) have gained sufficient attention as promising catalyst, while its potential capability towards photocatalytic CO2 reduction (PCR) has not been excavated yet. Herein,...
Icing of water (moisture) at subzero
temperatures with different
length scales is harmful to a variety of applications spanning from
large-scale aircraft to small camera lens. Existing strategies relying
on controlling the surface structure and material are encumbered with
shortcomings of short frost delay time, poor durability, and difficulty
in large-scale production. Inspired from the mucus secretion of mollusks,
we introduce organohydrogel dynamic interfaces that can perform dynamic
and reversible exchange of the cryoprotectant and water at the interface,
resulting in exceptional antifrosting, antiadhesion, and deicing properties
with long-term durability. The replenishable coating shows superlubrication
to the surface ice with a sliding angle up to 1.9 ± 0.4o and a frost delay time up to 970 ± 31 min in the presence of
water spray (99% relative humidity) at subzero temperatures. The strategy
offers a reliable and scalable solution to prevent engineering surfaces,
i.e., aircraft, pavement, bridge, and other public facilities, from
icing/frosting and ice adhesion, even under extreme cold environments.
An efficient, simple-to-perform, one-pot reaction cascade to 2-methylenepyrrolidines from p-toluenesulfonyl protected imines and propargylated malonates under a combination of base and copper(I) catalysis is reported.
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