The reaction of the ligands,ethylenediaminetetraacetic acid terasodium salt(Na 4EDTA)and N—N heterocyclic diamines like2,2’-bipyridine(bipy)with iron(Ⅱ)sulfate with 1∶2∶2 stoichiometric ratios form the mononuclea...The reaction of the ligands,ethylenediaminetetraacetic acid terasodium salt(Na 4EDTA)and N—N heterocyclic diamines like2,2’-bipyridine(bipy)with iron(Ⅱ)sulfate with 1∶2∶2 stoichiometric ratios form the mononuclear ternary complex of formulae,[Fe_(2)(EDTA)(bipy)2]at pH~7.The FTIR and Raman laser spectra of the iron(Ⅱ)complex show that 2,2’-bipyridine is present asa bidentate ligand and the ethylenediaminetetraacetic acid terasodium salt as monodentate carboxylate anion.The electronic spectra and magnetic moments data suggest the six coordination number.It has two iron(Ⅱ)centers in octahedral environments,which are interlinked by carboxylato-O atoms of ethylenediaminetetraacetate and by nitrogen atoms of the two 2,2-bipyridine ligands in a chelating mode.Thermal analysis study show thatiron(Ⅱ)complex containing EDTA and 2,2’-bipyridine on its thermalde composition form the corresponding Fe_(2)O_(3) oxide in nano size at the temperature range~475℃.The iron(Ⅱ)complex was performed as a convenient low cost precursor for the preparation of Fe_(2)O_(3) nanoparticles by the the thermal decomposition method.The iron(Ⅲ)oxide composition has been discussedusing FTIR,X-ray diffraction(XRD),transmission electron microscopy(TEM)and energy-dispersive X-ray spectroscopy(EDX).展开更多
Malignant neoplasms represent a significant global health threat.To address the need for accurate diagnosis and effective treatment,research is underway to develop therapeutic nanoplatforms.Iron oxide nanoparticles(NP...Malignant neoplasms represent a significant global health threat.To address the need for accurate diagnosis and effective treatment,research is underway to develop therapeutic nanoplatforms.Iron oxide nanoparticles(NPs),specifically Fe_(3)O_(4) NPs have been extensively studied as potential therapeutic agents for cancer due to their unique properties including magnetic targeting,favorable biocompatibility,high magnetic response sensitivity,prolonged in vivo circulation time,stable performance,and high self-metabolism.Their ability to be integrated with magnetic hyperthermia,photodynamic therapy,and photothermal therapy has resulted in the widespread use of Fe_(3)O_(4) NPs in cancer diagnosis and treatment,making them a popular choice for such applications.Various methods can be employed to synthesize magnetic Fe_(3)O_(4) NPs,which can then be surface-modified with biocompatible materials or active targeting molecules.Multifunctional systems can be created by combining Fe_(3)O_(4) NPs with polymers.By combining various therapeutic approaches,more effective biomedical materials can be developed.This paper discusses the synthesis of Fe_(3)O_(4) NPs and the latest research advances in Fe_(3)O_(4)-based nanotherapeutic platforms,as well as their applications in the biomedical field.展开更多
Adsorbent has been widely used for the recovery and enrichment of rare metals from waste water.Herein,a graphene-based adsorbent,graphene oxide/Fe_(3)O_(4)(GO/Fe_(3)O_(4))nanocomposite,was prepared by a facile hydroth...Adsorbent has been widely used for the recovery and enrichment of rare metals from waste water.Herein,a graphene-based adsorbent,graphene oxide/Fe_(3)O_(4)(GO/Fe_(3)O_(4))nanocomposite,was prepared by a facile hydrothermal method,and characterized by X-ray diffraction,Scanning Electron Microscope,X-ray Photoelectron Spectroscopy,Zeta potential and magnetization.The material has been explored for the recovery of In from simulated waste water.The test results show that the nanocomposite has a reasonable adsorption capacity on indium in a wide pH range,e.g.,the adsorption percent and quantity of In(Ⅲ)from the aqueous solutions at pH=4 and C0=50 mg·L^(-1)are 91%and 43.98 mg·L^(-1),respectively.In addition,the nanocomposites maintain a 75.5%cycling capacity and a 71%removal efficiency after five continuous cycles due to their novel properties of high specific surface area and superparamagnetism.The pseudo-second-order adsorption model can be used to interpret the kinetic data.High adsorption efficiency and good reusability can make the nanocomposite a promising adsorbent for recovery of In(Ⅲ).展开更多
基金Taif University Researches Supporting Project number(TURSP-2020/241),Taif University,Taif,Saudi Arabia。
文摘The reaction of the ligands,ethylenediaminetetraacetic acid terasodium salt(Na 4EDTA)and N—N heterocyclic diamines like2,2’-bipyridine(bipy)with iron(Ⅱ)sulfate with 1∶2∶2 stoichiometric ratios form the mononuclear ternary complex of formulae,[Fe_(2)(EDTA)(bipy)2]at pH~7.The FTIR and Raman laser spectra of the iron(Ⅱ)complex show that 2,2’-bipyridine is present asa bidentate ligand and the ethylenediaminetetraacetic acid terasodium salt as monodentate carboxylate anion.The electronic spectra and magnetic moments data suggest the six coordination number.It has two iron(Ⅱ)centers in octahedral environments,which are interlinked by carboxylato-O atoms of ethylenediaminetetraacetate and by nitrogen atoms of the two 2,2-bipyridine ligands in a chelating mode.Thermal analysis study show thatiron(Ⅱ)complex containing EDTA and 2,2’-bipyridine on its thermalde composition form the corresponding Fe_(2)O_(3) oxide in nano size at the temperature range~475℃.The iron(Ⅱ)complex was performed as a convenient low cost precursor for the preparation of Fe_(2)O_(3) nanoparticles by the the thermal decomposition method.The iron(Ⅲ)oxide composition has been discussedusing FTIR,X-ray diffraction(XRD),transmission electron microscopy(TEM)and energy-dispersive X-ray spectroscopy(EDX).
基金supported by the National Natural Science Foundation of China(Grant Nos.12272253,82103147,12202302,31800684,and 11802197)the Natural Science Foundation of Shanxi Province,China(Grant Nos.202203021221047,20210302124007,and 20210302124405)+3 种基金the Shanxi Scholarship Council of China(HGKY2019037)the Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering(2021SX-AT008 and 2021SX-AT009)the Central Guidance on Local Science and Technology Development Fund of Shanxi Province(YDZJSX2021A021)the Fund Program for the Scientific Activities of Selected Returned Overseas Professionals in Shanxi Province(20220006)is also acknowledged with gratitude.
文摘Malignant neoplasms represent a significant global health threat.To address the need for accurate diagnosis and effective treatment,research is underway to develop therapeutic nanoplatforms.Iron oxide nanoparticles(NPs),specifically Fe_(3)O_(4) NPs have been extensively studied as potential therapeutic agents for cancer due to their unique properties including magnetic targeting,favorable biocompatibility,high magnetic response sensitivity,prolonged in vivo circulation time,stable performance,and high self-metabolism.Their ability to be integrated with magnetic hyperthermia,photodynamic therapy,and photothermal therapy has resulted in the widespread use of Fe_(3)O_(4) NPs in cancer diagnosis and treatment,making them a popular choice for such applications.Various methods can be employed to synthesize magnetic Fe_(3)O_(4) NPs,which can then be surface-modified with biocompatible materials or active targeting molecules.Multifunctional systems can be created by combining Fe_(3)O_(4) NPs with polymers.By combining various therapeutic approaches,more effective biomedical materials can be developed.This paper discusses the synthesis of Fe_(3)O_(4) NPs and the latest research advances in Fe_(3)O_(4)-based nanotherapeutic platforms,as well as their applications in the biomedical field.
基金supported by the FJIRSM&IUE Joint Research Fund(No.RHZX-2018-006)。
文摘Adsorbent has been widely used for the recovery and enrichment of rare metals from waste water.Herein,a graphene-based adsorbent,graphene oxide/Fe_(3)O_(4)(GO/Fe_(3)O_(4))nanocomposite,was prepared by a facile hydrothermal method,and characterized by X-ray diffraction,Scanning Electron Microscope,X-ray Photoelectron Spectroscopy,Zeta potential and magnetization.The material has been explored for the recovery of In from simulated waste water.The test results show that the nanocomposite has a reasonable adsorption capacity on indium in a wide pH range,e.g.,the adsorption percent and quantity of In(Ⅲ)from the aqueous solutions at pH=4 and C0=50 mg·L^(-1)are 91%and 43.98 mg·L^(-1),respectively.In addition,the nanocomposites maintain a 75.5%cycling capacity and a 71%removal efficiency after five continuous cycles due to their novel properties of high specific surface area and superparamagnetism.The pseudo-second-order adsorption model can be used to interpret the kinetic data.High adsorption efficiency and good reusability can make the nanocomposite a promising adsorbent for recovery of In(Ⅲ).
