Plantago major L.,commonly known as plantain,waybread,or dooryard plantain,is a versatile medicinal plant with multiple therapeutic applications.Traditionally,various parts of the plant have been formulated into syrup...Plantago major L.,commonly known as plantain,waybread,or dooryard plantain,is a versatile medicinal plant with multiple therapeutic applications.Traditionally,various parts of the plant have been formulated into syrups,drops,ointments,vaginal suppositories,gargles,and roasted preparations to treat diverse ailments,such as liver disorders,earaches,epilepsy,asthma,stomachaches,diarrhea,constipation,polymenorrhea,and uterine disorders.The plant contains clinically valuable bioactive compounds,including polysaccharides,flavonoids,lipids,iridoid glycosides,caffeic acid derivatives,terpenoids,alkaloids,and organic acids.These bioactive constituents are the primary contributors to the plant’s broad spectrum of biological activities,including antioxidant,anti-inflammatory,antibacterial,antidiarrheal,hepatoprotective,antiviral,antiphage,antinociceptive,antiulcerogenic,antigenotoxic,and immunomodulatory effects of the plant.This review comprehensively summarizes the phytochemical composition,traditional medicinal applications,and biological properties of this multifunctional medicinal plant.展开更多
Yttrium and cerium co-doped ZnO nanoparticles were synthesized by combustion route and characterized using X-ray diffraction(XRD),scanning electron microscopy(SEM),Brunauer-Emmett-Teller(BET),energy dispersive spectro...Yttrium and cerium co-doped ZnO nanoparticles were synthesized by combustion route and characterized using X-ray diffraction(XRD),scanning electron microscopy(SEM),Brunauer-Emmett-Teller(BET),energy dispersive spectroscopy(EDS),X-ray photoelectron spectroscopy(XPS),UV-visible diffuse reflectance spectroscopy(UV-vis DRS),photoluminescence(PL)and electrochemical impedance spectroscopy(EIS)techniques.The introduction of yttrium ions has efficiently increased the relative percentage of Ce^(3+)ions in ZnO.Yttrium and cerium co-doped ZnO shows efficient photo activity for hydrogen evolution(10.61 mmol/((g·h))higher than previously reported optimal value for rare earth codoped ZnO photocatalysts.This remarkably increased hydrogen evolution can be ascribed to the synergy between electronic anchoring effect of Y^(3+)/Y^(2+)and Ce^(4+)/Ce^(3+)redox couples.This report presents new idea for the synthesis of efficient photocatalyst using economical route and ion anchoring effect.The hydrogen evolution was also tested using Na_(2)S and Na_(2)SO_(3)as electron donors under visible light illumination.The synthesized photocatalysts also exhibit high stability.展开更多
文摘Plantago major L.,commonly known as plantain,waybread,or dooryard plantain,is a versatile medicinal plant with multiple therapeutic applications.Traditionally,various parts of the plant have been formulated into syrups,drops,ointments,vaginal suppositories,gargles,and roasted preparations to treat diverse ailments,such as liver disorders,earaches,epilepsy,asthma,stomachaches,diarrhea,constipation,polymenorrhea,and uterine disorders.The plant contains clinically valuable bioactive compounds,including polysaccharides,flavonoids,lipids,iridoid glycosides,caffeic acid derivatives,terpenoids,alkaloids,and organic acids.These bioactive constituents are the primary contributors to the plant’s broad spectrum of biological activities,including antioxidant,anti-inflammatory,antibacterial,antidiarrheal,hepatoprotective,antiviral,antiphage,antinociceptive,antiulcerogenic,antigenotoxic,and immunomodulatory effects of the plant.This review comprehensively summarizes the phytochemical composition,traditional medicinal applications,and biological properties of this multifunctional medicinal plant.
文摘Yttrium and cerium co-doped ZnO nanoparticles were synthesized by combustion route and characterized using X-ray diffraction(XRD),scanning electron microscopy(SEM),Brunauer-Emmett-Teller(BET),energy dispersive spectroscopy(EDS),X-ray photoelectron spectroscopy(XPS),UV-visible diffuse reflectance spectroscopy(UV-vis DRS),photoluminescence(PL)and electrochemical impedance spectroscopy(EIS)techniques.The introduction of yttrium ions has efficiently increased the relative percentage of Ce^(3+)ions in ZnO.Yttrium and cerium co-doped ZnO shows efficient photo activity for hydrogen evolution(10.61 mmol/((g·h))higher than previously reported optimal value for rare earth codoped ZnO photocatalysts.This remarkably increased hydrogen evolution can be ascribed to the synergy between electronic anchoring effect of Y^(3+)/Y^(2+)and Ce^(4+)/Ce^(3+)redox couples.This report presents new idea for the synthesis of efficient photocatalyst using economical route and ion anchoring effect.The hydrogen evolution was also tested using Na_(2)S and Na_(2)SO_(3)as electron donors under visible light illumination.The synthesized photocatalysts also exhibit high stability.
