Photochemical Synthesis of Bimetallic Gold / Silver Nanoparticles in Polymer Matrix with Tunable Absorption Properties: Superior Photocatalytic Activity for Degradation of Methylene Blue

摘要: Abstract Bimetallic nanoparticles are widely used in chemical catalysis. Their practical performance can be better exploited through morphological control by adjusting the synthetic strategy. Herein, a photochemical synthesis route was to achieve controlled preparation of bimetallic Au/Ag BNps. Size and shape is achieved depending on type initiating radical therefore synthesized new one-component Type II photoinitator, namely 2-thioxanthone thioacetic acid-dioxide employed for BNp both solution polymer matrix. The effect gold/silver ratio nanoparticle size, distribution investigated, characterization obtained performed UV-Vis spectrophotometry, DLS SEM techniques. Additionally, photocatalytic oxidative degradation methylene blue with prepared nanocomposite films. By evaluating oxidation under light irradiation, 2:1 containing film exhibit best activity compared other composition Au/Ag. size high SPR absorption band thought responsible superior activity.