Novel hollow Fe3O4 nanoparticles for drug delivery were synthesized via a one-step template- free approach. These nanoparticles were obtained by modifing the Fe3O4 nanoparticles with 3-aminopropyltrimethoxy silane, an...Novel hollow Fe3O4 nanoparticles for drug delivery were synthesized via a one-step template- free approach. These nanoparticles were obtained by modifing the Fe3O4 nanoparticles with 3-aminopropyltrimethoxy silane, and then grafting alginate onto the surface of amine magnetic. The hollow structure of Fe3O4 spheres was characterized by TEM, XRD, and XPS. The M-H hysteresis loop indicated that the magnetic spheres exhibit snperparamagnetic characteristics at room temperature. Daunorubicin acting as a model drug was loaded into the carrier, and the maximum percent of envelop and load were 28.4% and 14.2% respectively. The drug controlled releasing behaviors of the carriers were compared in different pH media.展开更多
Ag_(3)PO_(4)exhibits a high photocatalytic activity if exposed to visible light,however,it displays bottlenecks such as poor cycle-stability and mediocre ability to degrade methyl orange(MO)because of limited adsorpti...Ag_(3)PO_(4)exhibits a high photocatalytic activity if exposed to visible light,however,it displays bottlenecks such as poor cycle-stability and mediocre ability to degrade methyl orange(MO)because of limited adsorption of MO molecules onto its surface.In this study,nano TiO_(2)prepared by a one-step method was combined with Ag_(3)PO_(4)to form a TiO_(2)@Ag_(3)PO_(4)heterojunction in order to improve this material both in terms of photocatalysis and photostability.After adding a KH-570 silane coupling agent,the photocatalytic performance of TiO_(2)@Ag_(3)PO_(4)could be improved even further,with the degradation rate of MO maintained at more than 90%after three cycles of visible in light.展开更多
An efficient method for preparation of substituted 1,2-phenylenedimethanols and aliphatic 1,4-diols that are valuable intermediates in organic synthesis, has been developed by the base-promoted reduction of isobenzofu...An efficient method for preparation of substituted 1,2-phenylenedimethanols and aliphatic 1,4-diols that are valuable intermediates in organic synthesis, has been developed by the base-promoted reduction of isobenzofuran-1(3H)-ones and y-lactones with silane under mild conditions. Compared with traditional procedures using stoichiometric amounts of metal hydrides and alkyl reductants, the present method avoids the use of sensitive reagents and is operationally simple and a broad variety of functional groups are tolerated.展开更多
文摘Novel hollow Fe3O4 nanoparticles for drug delivery were synthesized via a one-step template- free approach. These nanoparticles were obtained by modifing the Fe3O4 nanoparticles with 3-aminopropyltrimethoxy silane, and then grafting alginate onto the surface of amine magnetic. The hollow structure of Fe3O4 spheres was characterized by TEM, XRD, and XPS. The M-H hysteresis loop indicated that the magnetic spheres exhibit snperparamagnetic characteristics at room temperature. Daunorubicin acting as a model drug was loaded into the carrier, and the maximum percent of envelop and load were 28.4% and 14.2% respectively. The drug controlled releasing behaviors of the carriers were compared in different pH media.
基金This work was supported by the Natural Science Foundation of the Jiangsu Higher Education Institutions of China(No.18KJD430009)the Qing Lan Project of Jiangsu Province.
文摘Ag_(3)PO_(4)exhibits a high photocatalytic activity if exposed to visible light,however,it displays bottlenecks such as poor cycle-stability and mediocre ability to degrade methyl orange(MO)because of limited adsorption of MO molecules onto its surface.In this study,nano TiO_(2)prepared by a one-step method was combined with Ag_(3)PO_(4)to form a TiO_(2)@Ag_(3)PO_(4)heterojunction in order to improve this material both in terms of photocatalysis and photostability.After adding a KH-570 silane coupling agent,the photocatalytic performance of TiO_(2)@Ag_(3)PO_(4)could be improved even further,with the degradation rate of MO maintained at more than 90%after three cycles of visible in light.
基金the National Natural Science Foundation of China (Nos. 21572034, 21732007, 21871054) for financial support
文摘An efficient method for preparation of substituted 1,2-phenylenedimethanols and aliphatic 1,4-diols that are valuable intermediates in organic synthesis, has been developed by the base-promoted reduction of isobenzofuran-1(3H)-ones and y-lactones with silane under mild conditions. Compared with traditional procedures using stoichiometric amounts of metal hydrides and alkyl reductants, the present method avoids the use of sensitive reagents and is operationally simple and a broad variety of functional groups are tolerated.
