The heavy elements are produced via the bombardment of actinide targets by using low energy heavyion beams. The natural uranium and thorium always exist with lead and bismuth, large amounts of transfer reaction produc...The heavy elements are produced via the bombardment of actinide targets by using low energy heavyion beams. The natural uranium and thorium always exist with lead and bismuth, large amounts of transfer reaction products such as Rn and Po produced from the impurities of lead or bismuth when irradiated with heavy-ion beam. It strongly disturbed the identification of the transactinide elements. Therefore,展开更多
The synthesis of gold nanoparticles caped with visible light-responsible TiO2 nanoparticles. was prepared by using electrochemical Oxidation-Reduction Cycles （ORC） in 0.1 M HCI aqueous solution containing 60 mM visi...The synthesis of gold nanoparticles caped with visible light-responsible TiO2 nanoparticles. was prepared by using electrochemical Oxidation-Reduction Cycles （ORC） in 0.1 M HCI aqueous solution containing 60 mM visible light-responsible TiO2 nanoparticles. Firstly, an Au substrate was cycled in a deoxygenated aqueous solution containing 0.1 M HCI and 60 mM anatase TiO2 nanoparticles from -0.28 to ＋1.22 V vs Ag/AgCI at 500 mV/s with 25 scans. The durations at the cathodic and anodic vertexes are 10 and 5 s, respectively. After this process, Au-and TiO2-containing complexes were left in the solution. Then a Pt electrode immediately replaced the Au working electrode, and a cathodic overpotential of 0.6 V from the Open Circuit Potential （OCP） was applied under sonification to synthesize Au nanoparticles. Encouragingly, the prepared Au nanoparticles caped with visible light-responsible TiO2 nanoparticles are more active for the decomposition of formaldehyde than pure visible light-responsible TiO2 nanoparticles are in the same condition. After 5 days testing, the formaldehyde was decomposed ca. 35% in containing Au nanoparticles caped with visible light-responsible TiO2 nanoparticles, but the formaldehyde was decomposed only ca. 25% in containing pure visible light-responsible TiO2 nanoparticles.展开更多
An ordered nanostructure formed by epitaxial crystallization of a semicrystalline block copolymer on a substrate has been used as a patterned template for the selective deposition of thermally evaporated gold nanopart...An ordered nanostructure formed by epitaxial crystallization of a semicrystalline block copolymer on a substrate has been used as a patterned template for the selective deposition of thermally evaporated gold nanoparticles, resulting in the formation of structure-guiding host nanocomposites in which the ordered distribution of the guest particles is guided by the ordering of the host nanostructured block copolymer matrix. This opens new perspectives in the field of polymeric composites related to the maximum enhancement of effective physical properties and to the numerous possible applications that arise due to the presence of long-range order in the spatial distribution of functional nanoparticles.展开更多
文摘The heavy elements are produced via the bombardment of actinide targets by using low energy heavyion beams. The natural uranium and thorium always exist with lead and bismuth, large amounts of transfer reaction products such as Rn and Po produced from the impurities of lead or bismuth when irradiated with heavy-ion beam. It strongly disturbed the identification of the transactinide elements. Therefore,
文摘The synthesis of gold nanoparticles caped with visible light-responsible TiO2 nanoparticles. was prepared by using electrochemical Oxidation-Reduction Cycles （ORC） in 0.1 M HCI aqueous solution containing 60 mM visible light-responsible TiO2 nanoparticles. Firstly, an Au substrate was cycled in a deoxygenated aqueous solution containing 0.1 M HCI and 60 mM anatase TiO2 nanoparticles from -0.28 to ＋1.22 V vs Ag/AgCI at 500 mV/s with 25 scans. The durations at the cathodic and anodic vertexes are 10 and 5 s, respectively. After this process, Au-and TiO2-containing complexes were left in the solution. Then a Pt electrode immediately replaced the Au working electrode, and a cathodic overpotential of 0.6 V from the Open Circuit Potential （OCP） was applied under sonification to synthesize Au nanoparticles. Encouragingly, the prepared Au nanoparticles caped with visible light-responsible TiO2 nanoparticles are more active for the decomposition of formaldehyde than pure visible light-responsible TiO2 nanoparticles are in the same condition. After 5 days testing, the formaldehyde was decomposed ca. 35% in containing Au nanoparticles caped with visible light-responsible TiO2 nanoparticles, but the formaldehyde was decomposed only ca. 25% in containing pure visible light-responsible TiO2 nanoparticles.
文摘An ordered nanostructure formed by epitaxial crystallization of a semicrystalline block copolymer on a substrate has been used as a patterned template for the selective deposition of thermally evaporated gold nanoparticles, resulting in the formation of structure-guiding host nanocomposites in which the ordered distribution of the guest particles is guided by the ordering of the host nanostructured block copolymer matrix. This opens new perspectives in the field of polymeric composites related to the maximum enhancement of effective physical properties and to the numerous possible applications that arise due to the presence of long-range order in the spatial distribution of functional nanoparticles.
