The selective deposition of silver nanoparticles onto {101} facets of TiO2 nanocrystals with co-exposed {001}/{101} facets, and their enhanced photocatalytic reduction of aqueous nitrate under simulated solar illumination

摘要: Abstract Highly efficient photocatalytic reduction of environmental pollutants requires the enrichment photogenerated electrons on photocatalyst’s surface. Thus, proper material design and modification are needed to efficiently separate electron/hole pairs achieve their oriented migrations for In this work, a modified photo-deposition process was developed which successfully deposited silver nanoparticles selectively {1 0 1} facets TiO 2 nanocrystals with co-exposed {0 0 1}/{1 0 1} facets. The synergistic effect crystal facet engineering selective deposition largely enhanced separation carriers enriched presence photo-generated onto surface net negative-charged A strong capability sample demonstrated by its superior activity aqueous nitrate under simulated solar illumination. removal ratio reached ∼95%, most product desirable N selectivity over 90%. These nanocrystal could also effectively remove both various organic from water simultaneously.