Uniform Generation of Sub-nanometer Silver Clusters in Zeolite Cages Exhibiting High Photocatalytic Activity under Visible Light

• DOI: 10.1021/acsami.8b09634
• Publication Date: 2018-08-06T15:12:30Z
• Authors: Mohamad El-Roz; Igor Telegeiev; Natalia E. Mordvi...; Oleg I. Lebedev; Nicolas Barrier; Asma Behilil; Moussa Zaarour; Louwanda Lakiss; Valentin Valtchev
• Keywords: Nanometre; Bismuth vanadate; Visible spectrum

Sub-nanometer silver clusters that exhibit discrete electronic structure with molecular-like properties are highly desirable in various technologies. However, the methods for their preparation suffer from limitations related reproducibility and particles uniformity and/or possibility of scale-up. Another critical drawback is free sub-nanometer tend to aggregate into larger particles. In this work, a new approach successfully overcomes above developed. It allows, first time, an ultrafast high abundance, (7 Å), stability cages nanosized zeolite crystals. The method consists UV excitation water suspension nanozeolite containing photoactive vanadate presence ethanol (as electron donor) precursor. characteristic features presented, mechanism formation discussed. Ag exceptional photocatalytic activity selectivity reforming formic acid H2 CO2 under visible light.