The Controllable Fabrications And Photocatalytic Performance Of Ag/AgCl Or Porphyrin Nanomaterials Via A Surfactant-assisted Protocol

Visible-light-driven catalysts are the research hotspot in the photodegradation of organic pollutants. In various nanomaterials of well-defined morphologies, those featured with a one-dimensional(1D) architecture have gained particular interest and become a focus of much concern. This is owing to their unique 1D structural feature of a high aspect ratio and a confined dimension in the radial direction, which pave a good avenue for the transport of quantum particles, such as electrons, excitons, photons and phonons etc., in the axial direction. This paper presents a kind method of surfactant assisted one-step chemical reaction to construct spherical and 1D photocatalyst-Ag/AgCl. Then, we discuss the influence of the AgNO3 concentration, surfactant concentration, stirring intensity, stirring time on morphology of the Ag/AgCl nanoparticles; and investigate the photodegradation catalytic activity of spherical and 1D Ag/AgCl under the condition of visible light; and investigate the mechanism of the morphology building from near-spherical to 1D structures as well as the mechanism of different photodegradation catalytic activity about spherical and 1D Ag/AgCl.In the study of the concentration range, we can get spherical Ag/AgCl in a certain reaction time. When We change the reaction time, we can get 1D Ag/AgCl. The mixing speed has no effect on fabricating the Ag/AgCl morphology.1D Ag/AgCl have two kinds of preparation conditions. One kind is that 600 μL, 0.05 mol/L AgNO3 is dropwise added into 10 mL, 0.04 mo/L CTAC under vigorous stirring, we can get 1D Ag/AgCl when the stirring time extends to more than 36 h. Another kind is that washed spherical Ag/AgCl stirring over 36 h, under 0.04 mo/L CTAC solution. If the spherical Ag/AgCl is in thin CTAC solution, we can’t get 1D Ag/AgCl nanoparticles, even stirring 36 h.CTAC functions as chlorine source and also as the directing reagent for the formation of Ag/AgCl.Compared to the spherical Ag/AgCl nanostructures, the 1D counterparts exhibit distinctly boosted catalytic reactivity towards the photodegradation of methyl orange(MO) pollutants under visible light irradiation. Our results suggest that a more efficient photoinduced electron–hole separation, which is promoted by the unique structure and electronic features of the 1D nanostructures. There unique 1D structural features of a high aspect ratio and a confined dimension in the radial direction, which pave a good avenue for the transport of quantum particles.At room temperature, when we use the higher concentration of surfactant CTAB, we can get 1D porphyrin nanostructures. But, when we use the higher concentration of surfactant SDBS, we can get spherical porphyrin nanostructures. These two kinds of morphology for photocatalytic degradation of Rhodamine B can show good catalytic effect under visible light irradiation. But Compared to the spherical porphyrin nanostructures, the 1D counterparts exhibit distinctly boosted catalytic reactivity towards the photodegradation of rhodamine B pollutants under visible light irradiation. 1D nanostructures pave a good avenue for the transport of quantum particles, which improve the ability of directional charge carriers transmission, collection and separation. This is helpful to form a high performance photocatalyst.