An efficient visible-light-driven plasmonic photocatalyst with regard to graphene oxide(GO) hybridized Ag/Ag3PO4(Ag/Ag3PO4/GO) nanostructures has been facilely synthesized via a deposition-precipitation method.The synthesized nanostructures have been characterized by means of scanning electron microscopy(SEM),energy-dispersive X-ray spectroscopy(EDX),X-ray diffraction(XRD),UV-vis spectra,Fourier transform infrared spectra(FT-IR),X-ray photoelectron spectroscopy(XPS),and Raman spectra.It has been disclosed that compared with the bare Ag/Ag3PO4 nanospecies,the GO hybridized nanostructures display enhanced photocatalytic activity for the photodegradation of methyl orange pollutant under visible-light irradiation.It is suggested that the reinforced charge transfer and the suppressed recombination of electron-hole pairs in Ag/Ag3PO4 /GO,the smaller size of Ag/Ag3PO4 nanospecies in Ag/Ag3PO4/GO,all of which are the consequences of the hybridization of GO,are responsible for the enhanced photocatalytic performance.The investigation might open up new opportunities to obtain highly efficient Ag3PO4-based visible-light-driven plasmonic photocatalyst for the photodegradation of organic pollutants.
It is found that 5,10,15,20-tetrakis(4-sulfonatophenyl) porphyrin(TPPS),which is known to form J aggregates in water under low pH value,acts as a template for the hydrolyzing of organosilane.The nanotube structures of silica with 4 8 nm inner diameters are obtained,which is consistent with the height of TPPS J aggregates,indicating that TPPS J aggregates are indeed acting as the template for the sol-gel transcription.The TPPS J aggregation disappear when the medium pH value is shifted from acidic to basic,consequently formed silica nanostructures are amorphous nanosphere rather than nanofiber structures.In contrast,the copper phthalocyanine(TSCuPc),which does not exist as linear J aggregates,cannot induce the silica to form one dimensional nanofiber structures,implying that the templating effect of TPPS J aggregates for inorganic nanostructures.
Compressed CO2 could promote the disproportionation reactions of aryl alcohols in water medium significantly.The control experiments indicated that the effect of CO2 on the properties of the reactant/water emulsions was the main reason for the acceleration of the reactions rate.
Low-molecular-weight organogels(LMOG) have been attracting a surge interest in fabricating soft materials.Although the finding of the gelator molecules has been developed from serendipity to objective design,the achievement of the gelator molecules still needs good design and tedious organic synthesis.In this paper,we proposed a simple and general mixing approach to get the organogel for nearly all the organic compounds and even soluble nanoparticles without any modification.We have designed a universal gelator molecule,which forms organogels with more than 40 kinds of organic solvents from aploar to polar solvents.More interestingly,when other organic compounds or even nanomaterials,which are soluble in certain organic solvents,are mixed with this gelator molecule,they can form organogels no matter whether the individual compounds could form organogel or not.This method is applicable to nearly all kinds of soluble organic compounds and opens an efficient and universal way to fabricate gel materials.
