Ultrafine Ruthenium-Iridium-Tellurium Nanotubes for Boosting Overall Water Splitting in Acidic Media

Design of high performance electrocatalysts is critical to electrocatalytic water splitting in acidic media. Herein, a replacement reaction with Te nanowires (NWs) is employed for the synthesis of ternary RuIrTe...

Evaluating The Protective Effect of Calcium Carbonate Coating On Sandstone Cultural Heritage

The purpose of this work is to use different surfactants to deposit different crystal forms of calcium carbonate film on the surface of sandstone through a simple double replacement reaction. The protective effect of calcium carbonate coatings was evaluated through water absorption, water vapor permeability and weather resistance tests. The results show that the stone treated with vaterite calcium carbonate has excellent water absorption and permeability. Compared with untreated stone, the water absorption rate is reduced by 0.5 times, and the weather resistance is increased by 4 times, effectively hindering the erosion of water and soluble salts. These findings are expected to provide useful suggestions for the protection of stone cultural heritage.