Understanding the dynamical nature of the catalytic active site embedded in complex systems at the atomic level is critical to developing efficient photocatalytic materials. Here, we report, using 4D ultrafast electron microscopy, the spatiotemporal behaviors of titanium and oxygen in a titanosilicate catalytic material. The observed changes in Bragg diffraction intensity with time at the speci...

The exploration of highly efficient catalysts based on nano-sized Ti-rich titanosilicate zeolites with controllable active titanium species is great importance in zeolite catalytic reactions. Herein, we reported an and facile synthesis TS-1 (MFI) by replacing tetrabutyl orthotitanate (TBOT) tetramer (TBOT-tetramer) as the source. introduced TBOT-tetramer slowed down crystallization process, acc...

Incorporating hetero-metal-atom, e.g., titanium, into zeolite frameworks can enhance the catalytic activity and selectivity in oxidation reactions. However, rational design of zeolites containing titanium at specific sites is difficult because precise atomic structure during synthesis process remained unclear. Here, a titanosilicate with predictable distribution was synthesized by mediating vac...

This work aims at studying the potential of modifying surface used polyamide (PA) reverse osmosis (RO) commercial membranes by coatings made renewable and biodegradable polymers, chitosan (CS) polyvinyl alcohol (PVA), filled with Cu-ion-exchange layered AM-4 titanosilicate UZAR-S3 stannosilicate to provide antifouling properties enlarging life time thin-film composite (TFC) membranes. The water...