مشخصات پژوهش

عنوان	Dual Cocatalysts Loaded Reverse Type-I Core/Shell Quantum Dots for Photocatalytic Antibacterial Applications
نوع پژوهش	مقاله چاپ شده
کلیدواژه‌ها	determination of MIC and MBC, disc diffusion assays, detection of OHc radicals, detection of O2c using a chemiluminescence technique, monitoring of lipid peroxidation, and monitoring of protein carbonyl
چکیده	Here, we combined the benefits of reverse type-I core/shell quantum dots (CSQDs) and co-catalysts to improve both the performance and durability of reverse type-I CSQDs in photocatalytic antibacterial applications. For this purpose, co-catalysts of Ag and PdS were loaded on the surface of ZnS/CdS CSQDs to facilitate the spatial separation and transfer of photogenerated electrons and holes in the assynthesized CSQDs. Time-resolved and steady-state emission spectroscopy in the presence and absence of quenchers (electron quenching: NO3 and hole quenching: 4-methoxyphenol) was exploited to map out the distribution of the electron/hole wave functions in Ag-PdS/ZnS/CdS nanohybrids. The antibacterial activities of the as-synthesized samples were also studied using broth tube dilution and paper disc diffusion approaches against S. saprophyticus and E. coli as model strains of Gram-positive and Gramnegative microbes. The as-synthesized Ag-PdS/ZnS/CdS nanohybrid showed enhanced efficiencies in the photodecomposition of both Gram-negative and Gram-positive microorganisms compared to ZnS/CdS, ZnS and CdS. The roles of O2c and OHc in the bactericidal action of Ag-PdS/ZnS/CdS were investigated through chemiluminescence and fluorescence approaches, respectively. Finally, the simultaneous effects of radical species on lipid peroxidation and on the proteome were investigated
پژوهشگران	اباصلت حسین زاده کلاگر (نفر سوم)، عبد الرئوف صمدی میبدی (نفر دوم)، محمد رضا شریعتی (نفر اول)