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Mitochondrion targeting peptide-modified magnetic graphene oxide delivering mitoxantrone for impairment of tumor mitochondrial functions

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Chinese Chemical Letters 2021年第3期32卷 1220-1223页

作者： Hangqi Zhu Bing Zhang Nali Zhu Mingchun Li Qilin Yu Key Laboratory of Molecular Microbiology and Technology Ministry of EducationDepartment of MicrobiologyCollege of Life SciencesNankai UniversityTianjin 300071China College of Chemistry State Key Laboratory of Elemento-Organic ChemistryNankai UniversityTianjin 300071China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Tianjin 300072China

In this study,we prepared mitochondrion targeting peptide-grafted magnetic graphene oxide(GO)nanocarriers for efficient impairment of the tumor *** two-dimensional GOMNP-MitP nanosheets were synthesized by grafting magnetic y-Fe_(2)O_(3)to the surface of GO,followed by covalent modification of mitochondrion targeting peptide(MitP).GOMNP-MitP exhibited the high capacity of loading the anticancer drug mitoxantrone(MTX),and preferentially targeted the tumor *** the aid of alternating magnetic field(AMF),the MTX-loading GOMNP-MitP released MTX to the mitochondria,severely impairing mitochondrial functions,including attenuation of ATP production,decrease in mitochondrial membrane potential(MMP),and further leading to activation of *** study realized high-efficient mitochondrion-ta rgeting drug delivery for anticancer therapy by twodimensional nanoplatforms.

关键词： magnetic graphene oxide Nanocarrier Mitochondrion-targeting peptide Mitoxantrone Cancer therapy

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Effect of co-presence of NSAIDs with cadmium:i)evaluation of NSAIDbearing water for washing Cd from soil,ii)Cd removal from NSAIDbearing water using magnetic graphene oxide

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Emerging Contaminants 2022年第1期8卷 151-161页

作者： Amjad H.El-Sheikh Haneen K.Abu-Dgham Mahmoud S.Sunjuk Nabil N.Al-Hashimi Department of Chemistry Faculty of ScienceThe Hashemite UniversityP.O.Box 330127Zarqa13133Jordan Faculty of Pharmacy The Hashemite UniversityP.O.Box 330127Zarqa13133Jordan

Cadmium“Cd”is a toxic pollutant that may present in soil and *** work evaluates:i)the use of non-steroidal anti-inflammatory drugs“NSAIDs”-bearing water for washing soil containing Cd(Ⅱ),ii)removal of Cd(Ⅱ)from NSAID-bearing water by adsorption onto magnetic graphene oxide which can be easily separated by strong *** studied NSAIDs are aspirin,ketoprofen,ibuprofern and *** Cd(Ⅱ)-NSAIDs complexes were synthesized and characterized by *** was initially oxidized by either nitric acid,or ammonium persulphate method,or Hummer's *** was then deposited on graphene oxide to give the corresponding magnetic graphene oxides(NA-MGO,APSMGO and Hum-MGO,respectively).The effect of the following factors on Cd(Ⅱ)uptake was investigated:NSAIDs type,pH,graphene oxidation method,magnetite:graphene oxide mass ratio in the adsorbent,(Cd(Ⅱ):NSAID)molar *** Cd(Ⅱ)uptake was achieved using“magnetic graphene oxidized with ammonium persulphate where the mass ratio of magnetite to graphene oxide was 2:1”in the presence of diclofenac at *** best Cd(Ⅱ):diclofenac molar ratio was 1:*** maximum adsorption capacity of Cd(Ⅱ)was found to be 83 mg L*** regeneration of the adsorbent was possible by 0.3 M HNO3 solution and 80%of adsorption efficiency was maintained after five *** presence of coexisting ions,80%of the adsorption efficiency was *** NSAIDs-containing waters were used for washing Cd-containing soil;the maximum removal efficiencies of Cd were 18%and 16%using 5 mM diclofenac or 10 mM aspirin,*** diclofenac or aspirin-spiked real pharmaceutical wastewater gave 28%removal of *** optimum adsorption method was used for removal of Cd(Ⅱ)from diclofenac-containing soil-washing water,where two successive adsorptions were needed for complete Cd uptake.

关键词： Adsorption Cadmium magnetic graphene oxide NSAIDs Pharmaceutical wastewater Soil washing

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Fabrication of magnetic multi-template molecularly imprinted polymer composite for the selective and efficient removal of tetracyclines from water

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Frontiers of Environmental Science & Engineering 2021年第5期15卷 339-350页

作者： Guolong Zeng Yiyang Liu Xiaoguo Ma Yinming Fan School of Environmental Science and Engineering Guangdong University of TechnologyGuangzhou510006China

Antibiotic contamination of the water environment has attracted much attention from researchers because of their potential hazards to humans and *** this study,a multi-template molecularly imprinted polymer(MIP)modified mesoporous silica coated magnetic graphene oxide(MGO@MS@MIP)was prepared by the surface imprinting method via a sol-gel process and was used for the selective,efficient and simultaneous removal of tetracyclines(TCs),including doxycycline(DC),tetracycline(TC),chlorotetracycline(CTC)and oxytetracycline(OTC)from *** synthesized MIP composite was characterized by Fourier transform infrared spectroscopy,transmission electron microscope and thermogravimetric *** adsorption properties of MGO@MS@MIP for these TCs were characterized through adsorption kinetics,isotherms and selectivity *** MIP composite revealed larger adsorption quantities,excellent selectivity and rapid kinetics for these four *** adsorption process was spontaneous and endothermic and followed the Freundlich isotherm model and the pseudo-second-order kinetic *** MGO@MS@MIP could specifically recognize DC,TC,CTC and OTC in the presence of some chemical *** addition,the sorption capacity of the MIP composite did not decrease significantly after repeated application for at least five ***,the prepared magnetic MIP composite has great potential to contribute to the effective separation and removal of tetracyclines from water.

关键词： Tetracyclines Removal Adsorption Molecularly imprinted polymer magnetic graphene oxide

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Preparation and application of iron oxide/persimmon tannin/graphene oxide nanocomposites for efficient adsorption of erbium from aqueous solution

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Journal of Rare Earths 2020年第12期38卷 1344-1353页

作者： Lin Gao Zhongmin Wang Chaoke Qin Zhenming Chen Mingmin Gao Na He Xi Qian Zhide Zhou Guiyin Li School of Materials Science and Engineering Guilin University of Electronic TechnologyGuilin 541004China School of Life and Environmental Sciences Guilin University of Electronic TechnologyGuilin 541004China China Nonferrous Metal(Guilin)Geology for Mineral Co. Ltd.Guilin 541004China College of Materials and Chemical Engineering Hezhou UniversityHezhou 541004China

Rare earth elements(REEs)are used for the developme nt of new energy materials owing to their intrinsic physicochemical ***,excess REEs in water threaten the safety of animals,plants and *** efficient way to separate REEs from the water is therefore *** this study,a biosorbent consisting of iron oxide(Fe3 O4),persimmon tannin(PT),and graphene oxide(GO)as Fe3 O4/PT/GO was prepared,and the adsorption of trivalent erbium(Er3+)ions from aqueous solution was *** adsorption process for Er3+ions conforms to pseudo-second order kinetic and the Langmuir isotherm model *** studies indicate that the adsorption process is spontaneous and *** electron microscopy(SEM),X-ray photoelectron spectroscopy(XPS),X-ray diffraction(XRD),thermogravimetric analysis(TGA).Fourier-transform infrared(FT-IR)spectroscopy;Brunauer-Emmett-Teller(BET)analysis,and vibrating sample magnetometer(VSM)were used to assess the adsorption mechanism of Er3+ions onto the Fe3 O4/PT/GO biosorbent.A combination of electrostatic interactions,redox reactivity and chelation are responsible for adsorption of Er3+ions on the Fe3 O4/PT/GO biosorbent,The magnetic Fe3 O4/PT/GO biosorbent can be easily separated under the magnetic field for effective recycle of Er3+ions from aqueous ***,this new biomass composite holds great promise for wastewater treatment.

关键词： Erbium magnetic graphene oxide Persimmon tannins Biosorbent Adsorption mechanism Rare earths

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