White carbon black: the nano guardian in the agricultural field
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In organic tea gardens in Yunnan, a mesoporous white carbon black loaded with copper ions is replacing traditional pesticides. This carrier material with a diameter of 80nm has a unique "gate effect" - releasing fungicides in a pest environment with a pH of 5.5, while maintaining stability in neutral soil. Field trials have shown that the pesticide utilization rate has increased from 35% to 82%, and the residual amount is less than 1/10 of the EU standard. This article establishes a novel diffusion model for its pore structure and release kinetics, and explores its application prospects in smart agriculture.
