It is anticipated to remove highly hazardous tetracycline antibiotic from aqueous solution photocatalytically by using Gd doped spinal ferrite.In this work,both ZnFe_(2)O_(4)and Gd doped ZnFe_(2)O_(4)photocatalysts we...It is anticipated to remove highly hazardous tetracycline antibiotic from aqueous solution photocatalytically by using Gd doped spinal ferrite.In this work,both ZnFe_(2)O_(4)and Gd doped ZnFe_(2)O_(4)photocatalysts were hydrothermally fabricated and characterized by different techniques.The spherical photocatalysts show extended photocatalytic removal efficiency under visible light.The optimized sample(ZnFe_(1.96)Cd_(0.04)O_(4))removes 78%antibiotic in 80 min.Moreover,under simulated solar light irradiation,the rate of hydrogen produced from water splitting photocatalysis with ZnFe_(1.96)Cd_(0.04)O_(4)reaches 230.4μmol/(g h).These increased activities are attributed to the increased specific surface area,the expanded light absorption range and the enhanced charge separation realized by doping Gd.According to the charge trapping study,both superoxide(·O_(2)^(-))and hydroxyl radicals(·OH)were the major active species in the process of removing antibiotic.This research provides a feasible way to fabricate low cost photocatalysts for the eradication of highly hazardous pollutants from aqueous solution.展开更多
Malignant tumors are complex organs consisting of tumor cells and their microenvironment. Increasing evidence has shown that the tumor microenvironment is critical to the initiation and progression of tumors. Rational...Malignant tumors are complex organs consisting of tumor cells and their microenvironment. Increasing evidence has shown that the tumor microenvironment is critical to the initiation and progression of tumors. Rational design of tumor therapies via targeting the tumor microenvironment to inhibit tumor growth is thus becoming a consensus strategy. Gd@C 82 (OH) 22 nanoparticles, as novel endohedral hydroxylated metallofullerenes, have been demonstrated to be a potent antitumor nanomedicine via targeting multiple factors in the tumor microenvironment. Gd@C 82 (OH) 22 nanoparticles possess excellent biocompatibility and remarkable antineoplastic activity, as a result not of direct tumor cytotoxicity but of their diverse biological effects, including antioxidation, immune activation, angiogenesis inhibition, imprisoning cancer cells, and reversal of drug-resistance. In this article, we summarize the unique nanoscale physiochemical properties and the antineoplastic activities of Gd@C 82 (OH) 22 nanoparticles, and focus on the mechanisms underlying their regulation of the tumor microenvironment.展开更多
基金Project supported by the National Natural Science Foundation of China(22268003,52272287)。
文摘It is anticipated to remove highly hazardous tetracycline antibiotic from aqueous solution photocatalytically by using Gd doped spinal ferrite.In this work,both ZnFe_(2)O_(4)and Gd doped ZnFe_(2)O_(4)photocatalysts were hydrothermally fabricated and characterized by different techniques.The spherical photocatalysts show extended photocatalytic removal efficiency under visible light.The optimized sample(ZnFe_(1.96)Cd_(0.04)O_(4))removes 78%antibiotic in 80 min.Moreover,under simulated solar light irradiation,the rate of hydrogen produced from water splitting photocatalysis with ZnFe_(1.96)Cd_(0.04)O_(4)reaches 230.4μmol/(g h).These increased activities are attributed to the increased specific surface area,the expanded light absorption range and the enhanced charge separation realized by doping Gd.According to the charge trapping study,both superoxide(·O_(2)^(-))and hydroxyl radicals(·OH)were the major active species in the process of removing antibiotic.This research provides a feasible way to fabricate low cost photocatalysts for the eradication of highly hazardous pollutants from aqueous solution.
文摘Malignant tumors are complex organs consisting of tumor cells and their microenvironment. Increasing evidence has shown that the tumor microenvironment is critical to the initiation and progression of tumors. Rational design of tumor therapies via targeting the tumor microenvironment to inhibit tumor growth is thus becoming a consensus strategy. Gd@C 82 (OH) 22 nanoparticles, as novel endohedral hydroxylated metallofullerenes, have been demonstrated to be a potent antitumor nanomedicine via targeting multiple factors in the tumor microenvironment. Gd@C 82 (OH) 22 nanoparticles possess excellent biocompatibility and remarkable antineoplastic activity, as a result not of direct tumor cytotoxicity but of their diverse biological effects, including antioxidation, immune activation, angiogenesis inhibition, imprisoning cancer cells, and reversal of drug-resistance. In this article, we summarize the unique nanoscale physiochemical properties and the antineoplastic activities of Gd@C 82 (OH) 22 nanoparticles, and focus on the mechanisms underlying their regulation of the tumor microenvironment.
