Hong-Wen Gao and Xin-Hui Xu
Chem. Commun., 2011,47, 12810-12812
DOI:
10.1039/C1CC15435D,
Communication
The CR@BaSO4 hybrid was synthesized, characterized and used as an acid rain-indicating (ARI) material. A painted ARI umbrella was discolored after exposure to simulated acid rain of pH 5 or less and returned to the initial color after the rain stopped. Such a functionalized material may make acid rain visual to remind people in real-time.