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Liu D, Hu H, Yang Y, Cui J, Fan X, Zhao Z, Kong L, Xiao X, Xie Z. Restructuring effects of Pt and Fe in Pt/Fe-DMSN catalysts and their enhancement of propane dehydrogenation. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.03.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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2
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Zhai QZ, Li XD. Immobilization and sustained release of cefalexin on MCF nano-mesoporous material. J DISPER SCI TECHNOL 2019. [DOI: 10.1080/01932691.2019.1615936] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Qing-Zhou Zhai
- Research Center for Nanotechnology, South Campus, Changchun University of Science and Technology , Changchun , Jilin Province , P. R. China
| | - Xiao-Dong Li
- Department of Basic Science, Jilin Jianzhu University , Changchun , P. R. China
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3
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Moeinpour F, Khojastehnezhad A. Polyphosphoric acid supported on Ni0.5Zn0.5Fe2O4 nanoparticles as a magnetically-recoverable green catalyst for the synthesis of pyranopyrazoles. ARAB J CHEM 2017. [DOI: 10.1016/j.arabjc.2014.02.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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4
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Yavari S, Mahmodi NM, Teymouri P, Shahmoradi B, Maleki A. Cobalt ferrite nanoparticles: Preparation, characterization and anionic dye removal capability. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2015.08.011] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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5
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Hsieh PW, Tseng CL, Kuo DH. Preparation of SiO2-Protecting Metallic Fe Nanoparticle/SiO2 Composite Spheres for Biomedical Application. MATERIALS 2015. [PMCID: PMC5458912 DOI: 10.3390/ma8115416] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Functionalized Fe nanoparticles (NPs) have played an important role in biomedical applications. In this study, metallic Fe NPs were deposited on SiO2 spheres to form a Fe/SiO2 composite. To protect the Fe from oxidation, a thin SiO2 layer was coated on the Fe/SiO2 spheres thereafter. The size and morphology of the SiO2@Fe/SiO2 composite spheres were examined by transmission electron microscopy (TEM). The iron form and its content and magnetic properties were examined by X-ray diffraction (XRD), inductively-coupled plasma mass spectrometry (ICP-MS) and a superconducting quantum interference device (SQUID). The biocompatibility of the SiO2@Fe/SiO2 composite spheres was examined by Cell Counting Kit-8 (CCK-8) and lactate dehydrogenase (LDH) tests. The intracellular distribution of the SiO2@Fe/SiO2 composite spheres was observed using TEM. XRD analysis revealed the formation of metallic iron on the surface of the SiO2 spheres. According to the ICP-MS and SQUID results, using 0.375 M FeCl3·6H2O for Fe NPs synthesis resulted in the highest iron content and magnetization of the SiO2@Fe/SiO2 spheres. Using a dye loading experiment, a slow release of a fluorescence dye from SiO2@Fe/SiO2 composite spheres was confirmed. The SiO2@Fe/SiO2 composite spheres co-cultured with L929 cells exhibit biocompatibility at concentrations <16.25 µg/mL. The TEM images show that the SiO2@Fe/SiO2 composite spheres were uptaken into the cytoplasm and retained in the endosome. The above results demonstrate that the SiO2@Fe/SiO2 composite spheres could be used as a multi-functional agent, such as a magnetic resonance imaging (MRI) contrast agent or drug carriers in biomedical applications.
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Affiliation(s)
- Pin-Wei Hsieh
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, No. 43, Sec. 4, Keelung Road, Taipei 10607, Taiwan; (P.-W.H.); (D.-H.K.)
| | - Ching-Li Tseng
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, No. 250, Wu-Hsing Street, Taipei 110, Taiwan
- Correspondence: ; Tel.: +886-2-2736-1661 (ext. 5214); Fax: +886-2-2739-7059
| | - Dong-Hau Kuo
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, No. 43, Sec. 4, Keelung Road, Taipei 10607, Taiwan; (P.-W.H.); (D.-H.K.)
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Wang H, Li X, Xiong C, Gao S, Wang J, Kong Y. One-Pot Synthesis of Iron-Containing Nanoreactors with Controllable Catalytic Activity Based on Multichannel Mesoporous Silica. ChemCatChem 2015. [DOI: 10.1002/cctc.201500868] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Haiqing Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering; College of Chemistry and Chemical Engineering; Nanjing Tech University; Nanjing 210009 P.R. China
| | - Xiaoming Li
- State Key Laboratory of Materials-Oriented Chemical Engineering; College of Chemistry and Chemical Engineering; Nanjing Tech University; Nanjing 210009 P.R. China
| | - Cuirong Xiong
- State Key Laboratory of Materials-Oriented Chemical Engineering; College of Chemistry and Chemical Engineering; Nanjing Tech University; Nanjing 210009 P.R. China
| | - Shuying Gao
- State Key Laboratory of Materials-Oriented Chemical Engineering; College of Chemistry and Chemical Engineering; Nanjing Tech University; Nanjing 210009 P.R. China
| | - Jun Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering; College of Chemistry and Chemical Engineering; Nanjing Tech University; Nanjing 210009 P.R. China
| | - Yan Kong
- State Key Laboratory of Materials-Oriented Chemical Engineering; College of Chemistry and Chemical Engineering; Nanjing Tech University; Nanjing 210009 P.R. China
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Functionalized silica nanoparticles as a carrier for Betamethasone Sodium Phosphate: Drug release study and statistical optimization of drug loading by response surface method. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 56:223-32. [PMID: 26249584 DOI: 10.1016/j.msec.2015.06.012] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2015] [Revised: 05/27/2015] [Accepted: 06/09/2015] [Indexed: 02/07/2023]
Abstract
Mesoporous silica nanoparticles with a hexagonal structure (SBA-15) were synthesized and modified with (3-aminopropyl) triethoxysilane (APTES), and their performance as a carrier for drug delivery system was studied. Chemical structure and morphology of the synthesized and modified SBA-15 were characterized by SEM, BET, TEM, FT-IR and CHN technique. Betamethasone Sodium Phosphate (BSP) as a water soluble drug was loaded on the mesoporous silica particle for the first time. The response surface method was employed to obtain the optimum conditions for the drug/silica nanoparticle preparation, by using Design-Expert software. The effect of time, pH of preparative media, and drug/silica ratio on the drug loading efficiency was investigated by the software. The maximum loading (33.69%) was achieved under optimized condition (pH: 1.8, time: 3.54 (h) and drug/silica ratio: 1.7). The in vitro release behavior of drug loaded particles under various pH values was evaluated. Finally, the release kinetic of the drug was investigated using the Higuchi and Korsmeyer-Peppas models. Cell culture and cytotoxicity assays revealed the synthesized product doesn't have any cytotoxicity against human bladder cell line 5637. Accordingly, the produced drug-loaded nanostructures can be applied via different routes, such as implantation and topical or oral administration.
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Moeinpour F, Khojastehnezhad A. Cesium carbonate supported on hydroxyapatite coated Ni0.5Zn0.5Fe2O4 magnetic nanoparticles as an efficient and green catalyst for the synthesis of pyrano[2,3-c]pyrazoles. CHINESE CHEM LETT 2015. [DOI: 10.1016/j.cclet.2015.01.033] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Hashemikia S, Hemmatinejad N, Ahmadi E, Montazer M. Optimization of tetracycline hydrochloride adsorption on amino modified SBA-15 using response surface methodology. J Colloid Interface Sci 2015; 443:105-14. [DOI: 10.1016/j.jcis.2014.11.020] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2014] [Revised: 10/31/2014] [Accepted: 11/06/2014] [Indexed: 11/28/2022]
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10
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Khojastehnezhad A, Rahimizadeh M, Moeinpour F, Eshghi H, Bakavoli M. Polyphosphoric acid supported on silica-coated NiFe2O4 nanoparticles: An efficient and magnetically-recoverable catalyst for N-formylation of amines. CR CHIM 2014. [DOI: 10.1016/j.crci.2013.07.013] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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11
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Lim EK, Jang E, Lee K, Haam S, Huh YM. Delivery of cancer therapeutics using nanotechnology. Pharmaceutics 2013; 5:294-317. [PMID: 24300452 PMCID: PMC3834952 DOI: 10.3390/pharmaceutics5020294] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2012] [Revised: 04/15/2013] [Accepted: 05/03/2013] [Indexed: 02/04/2023] Open
Abstract
Nanoparticles have been investigated as drug carriers, because they provide a great opportunity due to their advantageous features: (i) various formulations using organic/inorganic materials, (ii) easy modification of targeting molecules, drugs or other molecules on them, (iii) effective delivery to target sites, resulting in high therapeutic efficacy and (iv) controlling drug release by external/internal stimuli. Because of these features, therapeutic efficacy can be improved and unwanted side effects can be reduced. Theranostic nanoparticles have been developed by incorporating imaging agents in drug carriers as all-in-one system, which makes it possible to diagnose and treat cancer by monitoring drug delivery behavior simultaneously. Recently, stimuli-responsive, activatable nanomaterials are being applied that are capable of producing chemical or physical changes by external stimuli. By using these nanoparticles, multiple tasks can be carried out simultaneously, e.g., early and accurate diagnosis, efficient cataloguing of patient groups of personalized therapy and real-time monitoring of disease progress. In this paper, we describe various types of nanoparticles for drug delivery systems, as well as theranostic systems.
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Affiliation(s)
- Eun-Kyung Lim
- Department of Radiology, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-752, Korea.
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Wu ZY, Ma CB, Tang XG, Li R, Liu QX, Chen BT. Double-perovskite magnetic La2NiMnO6 nanoparticles for adsorption of bovine serum albumin applications. NANOSCALE RESEARCH LETTERS 2013; 8:207. [PMID: 23639007 PMCID: PMC3655024 DOI: 10.1186/1556-276x-8-207] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Accepted: 04/20/2013] [Indexed: 06/01/2023]
Abstract
Double-perovskite La2NiMnO6 (LNMO) nanoparticles were synthesized by co-precipitation process, and the adsorption of bovine serum albumin (BSA) protein on these nanoparticles was carried out. The powder samples were annealed at 750, 850, 950, and 1,050°C, respectively. X-ray diffraction (XRD) results reveal that there are double perovskites and exhibit mixed orientations, without any impurity phases. Transmission electron microscopy results as well as the XRD estimate results show that the crystalline size is about 34 to 40 nm. The adsorption of BSA on the magnetic nanoparticles was analyzed using a UV spectrophotometer at room temperature. The results show that the as-prepared LNMO nanoparticles display a good adsorbing ability for BSA, and the nanoparticle sintered at 850°C has the highest value of 219.6 mg/g, which is much higher than others.
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Affiliation(s)
- Zhi-Yong Wu
- Department of Traditional Chinese Medicine of Nanfang Hospital, Southern Medical University, Guangzhou 510515, People’s Republic of China
| | - Cai-Bin Ma
- School of Physics and Optoelectric Engineering, Guangzhou Higher Education Mega Center, Guangdong University of Technology, Guangzhou 510006, People’s Republic of China
| | - Xin-Gui Tang
- School of Physics and Optoelectric Engineering, Guangzhou Higher Education Mega Center, Guangdong University of Technology, Guangzhou 510006, People’s Republic of China
| | - Rui Li
- School of Physics and Optoelectric Engineering, Guangzhou Higher Education Mega Center, Guangdong University of Technology, Guangzhou 510006, People’s Republic of China
| | - Qiu-Xiang Liu
- School of Physics and Optoelectric Engineering, Guangzhou Higher Education Mega Center, Guangdong University of Technology, Guangzhou 510006, People’s Republic of China
| | - Bao-Tian Chen
- Department of Traditional Chinese Medicine of Nanfang Hospital, Southern Medical University, Guangzhou 510515, People’s Republic of China
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Tahmasebi E, Yamini Y. Facile synthesis of new nano sorbent for magnetic solid-phase extraction by self assembling of bis-(2,4,4-trimethyl pentyl)-dithiophosphinic acid on Fe3O4@Ag core@shell nanoparticles: Characterization and application. Anal Chim Acta 2012. [DOI: 10.1016/j.aca.2012.10.040] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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14
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Zhai QZ. Inclusion of cefalexin in SBA-15 mesoporus material and release property. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2012. [DOI: 10.1016/j.msec.2012.07.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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15
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Chung J, Chun J, Lee J, Lee SH, Lee YJ, Hong SW. Sorption of Pb(II) and Cu(II) onto multi-amine grafted mesoporous silica embedded with nano-magnetite: effects of steric factors. JOURNAL OF HAZARDOUS MATERIALS 2012; 239-240:183-191. [PMID: 22985819 DOI: 10.1016/j.jhazmat.2012.08.063] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2012] [Revised: 08/20/2012] [Accepted: 08/24/2012] [Indexed: 06/01/2023]
Abstract
Steric factors affecting the mass transfer of Pb(II) and Cu(II) in mesocellular silica foams (MSU-F-S) functionalized with multi- (mono-, di-, tri-) amine groups and nano-magnetite were investigated through batch experiments. We observed that neither the sorption capacities nor the sorption rates were linearly proportional to the number of amine groups introduced to a ligand. Unexpectedly, the tri-amine grafted samples exhibited lower affinity for both metal cations. These results are mainly attributed to two important steric factors, pore blockage and a conformational change of available amine groups. The relatively large pore size (∼30 nm) of MSU-F-S could enable various functional molecules such as amines and nano-magnetite to be effectively loaded within the pores. However, their excessive densities in the limited pore structure could have adverse effects on the transport of metal ions into the mesopores. An intraparticle diffusion model was applied to elucidate the mechanisms involved in the sorption process. Our results showed that the diffusional mass transfer into the mesopores was significantly inhibited in tri-amine grafted samples. The present findings further the understanding of steric effects on the transport of cationic metals into functionalized mesoporous silica and designing efficient sorbents.
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Affiliation(s)
- Jaeshik Chung
- Center for Water Resource Cycle Research, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of Korea
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Zhai QZ. Preparation and controlled release of mesoporous MCM-41/propranolol hydrochloride composite drug. J Microencapsul 2012; 30:173-80. [PMID: 22894165 DOI: 10.3109/02652048.2012.714409] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
This article used MCM-41 as a carrier for the assembly of propranolol hydrochloride by the impregnation method. By means of chemical analysis, powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FT-IR) spectroscopy and low-temperature N(2) adsorption-desorption at 77 K, the characterization was made for the prepared materials. The propranolol hydrochloride guest assembly capacity was 316.20 ± 0.31 mg/g (drug/MCM-41). Powder XRD test results indicated that during the process of incorporation, the frameworks of the MCM-41 were not destroyed and the crystalline degrees of the host-guest nanocomposite materials prepared still remained highly ordered. Characterization by SEM and TEM showed that the composite material presented spherical particle and the average particle size of composite material was 186 nm. FT-IR spectra showed that the MCM-41 framework existed well in the (MCM-41)-propranolol hydrochloride composite. Low-temperature nitrogen adsorption-desorption results at 77 K showed that the guest partially occupied the channels of the molecular sieves. Results of the release of the prepared composite drug in simulated body fluid indicated that the drug can release up to 32 h and its maximum released amount was 99.20 ± 0.11%. In the simulated gastric juice release pattern of drug, the maximum time for the drug release was discovered to be 6 h and the maximum cumulative released amount of propranolol hydrochloride was 45.13 ± 0.23%. The drug sustained-release time was 10 h in simulated intestinal fluid and the maximum cumulative released amount was 62.05 ± 0.13%. The prepared MCM-41 is a well-controlled drug delivery carrier.
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Affiliation(s)
- Qing-Zhou Zhai
- Research Center for Nanotechnology, Changchun University of Science and Technology, Changchun, Jilin Province, P.R. China.
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Synthesis, characterization and sustaining controlled release effect of mesoporous SBA-15/ramipril composite drug. J INCL PHENOM MACRO 2012. [DOI: 10.1007/s10847-012-0222-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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18
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Pola J, Urbanová M, Pokorná D, Bakardjieva S, Šubrt J, Bastl Z, Gondal MA, Masoudi HM. IR laser photodeposition of a-Fe/Si films developing nanograins of ferrisilicate, iron disilicide and rare hexagonal iron upon annealing. Dalton Trans 2012; 41:1727-33. [PMID: 22159449 DOI: 10.1039/c1dt11587a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
IR laser-induced gas-phase photolysis of Fe(CO)(5)-SiH(4) mixtures occurs as SiH(4)-photosensitized decomposition of Fe(CO)(5) is accelerated by products of this decomposition and it results in deposition of amorphous Si/Fe nanocomposite films. Analyses of the deposited and subsequently annealed solid films were made by FTIR, Raman and X-ray photoelectron spectroscopy, X-ray diffraction and electron microscopy. The deposited films are amorphous, contain crystalline nanostructures of iron silicide FeSi(2) and undergo atmospheric oxidation in topmost layers to iron oxide and hydrogenated silicon oxide. Upon annealing they develop nanocrystalline structures of ferrisilicate, Fe(1.6)SiO(4), carbon-encaged iron disilicide, FeSi(2), and very rare hexagonal (high-pressure) Fe surviving at ambient conditions. The mechanism of formation of these nanostructures is discussed in terms of gas-phase and solid-phase reactions.
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Affiliation(s)
- J Pola
- Laboratory of Laser Chemistry, Institute of Chemical Process Fundamentals, ASCR, 16502, Prague, Czech Republic
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Physicochemical stability of high indomethacin payload ordered mesoporous silica MCM-41 and SBA-15 microparticles. Int J Pharm 2011; 416:242-51. [PMID: 21763766 DOI: 10.1016/j.ijpharm.2011.06.050] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2011] [Revised: 06/28/2011] [Accepted: 06/30/2011] [Indexed: 11/21/2022]
Abstract
Stability of high indomethacin (IMC) content formulations based on ordered mesoporous silica MCM-41 and SBA-15 materials was studied before and after a 3 month storage in stressed conditions (30°C/56% RH). Overall, the physical stability of the samples was found satisfactory after the storage. However, some issues with the chemical stability were noted, especially with the MCM-41 based samples. The stability issues were evident from the decreased HPLC loading degrees of the drug after stressing as well as from the observed extra peaks in the HPLC chromatograms of the drug in the stressed samples. Drug release from the mesoporous formulations before stressing was rapid at pH 1.2 in comparison to bulk crystalline IMC. The release profiles also remained similar after stressing. Even faster and close to complete IMC release was achieved when the pH was raised from 1.2 to 6.8. To our knowledge, this is the first report of chemical stability issues of drugs in mesoporous silica drug formulations. The present results encourage further study of the factors affecting the chemical stability of drugs in mesoporous silica MCM-41 and SBA-15 formulations in order to realize their potential in oral drug delivery.
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Ni0.5Zn0.5Fe2O4 nanoparticles and their magnetic properties and adsorption of bovine serum albumin. POWDER TECHNOL 2011. [DOI: 10.1016/j.powtec.2011.03.039] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Kinnari P, Mäkilä E, Heikkilä T, Salonen J, Hirvonen J, Santos HA. Comparison of mesoporous silicon and non-ordered mesoporous silica materials as drug carriers for itraconazole. Int J Pharm 2011; 414:148-56. [PMID: 21601623 DOI: 10.1016/j.ijpharm.2011.05.021] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2011] [Revised: 05/04/2011] [Accepted: 05/05/2011] [Indexed: 11/16/2022]
Abstract
Mesoporous materials have an ability to enhance dissolution properties of poorly soluble drugs. In this study, different mesoporous silicon (thermally oxidized and thermally carbonized) and non-ordered mesoporous silica (Syloid AL-1 and 244) microparticles were compared as drug carriers for a hydrophobic drug, itraconazole (ITZ). Different surface chemistries pore volumes, surface areas, and particle sizes were selected to evaluate the structural effect of the particles on the drug loading degree and on the dissolution behavior of the drug at pH 1.2. The results showed that the loaded ITZ was apparently in amorphous form, and that the loading process did not change the chemical structure/morphology of the particles' surface. Incorporation of ITZ in both microparticles enhanced the solubility and dissolution rate of the drug, compared to the pure crystalline drug. Importantly, the physicochemical properties of the particles and the loading procedure were shown to have an effect on the drug loading efficiency and drug release kinetics. After storage under stressed conditions (3 months at 40 °C and 70% RH), the loaded silica gel particles showed practically similar dissolution profiles as before the storage. This was not the case with the loaded mesoporous silicon particles due to the almost complete chemical degradation of ITZ after storage.
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Affiliation(s)
- Päivi Kinnari
- Division of Pharmaceutical Technology, Faculty of Pharmacy, University of Helsinki, FI-00014, Finland
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Liu J, Qiao SZ, Hu QH, Lu GQM. Magnetic nanocomposites with mesoporous structures: synthesis and applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2011; 7:425-43. [PMID: 21246712 DOI: 10.1002/smll.201001402] [Citation(s) in RCA: 395] [Impact Index Per Article: 30.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2010] [Indexed: 05/21/2023]
Abstract
Magnetic nanocomposites with well-defined mesoporous structures, shapes, and tailored properties are of immense scientific and technological interest. This review article is devoted to the progress in the synthesis and applications of magnetic mesoporous materials. The first part briefly reviews various general methods developed for producing magnetic nanoparticles (NPs). The second presents and categorizes the synthesis of magnetic nanocomposites with mesoporous structures. These nanocomposites are broadly categorized into four types: monodisperse magnetic nanocrystals embedded in mesoporous nanospheres, microspheres encapsulating magnetic cores into perpendicularly aligned mesoporous shells, ordered mesoporous materials loaded with magnetic NPs inside the porous channels or cages, and rattle-type magnetic nanocomposites. The third section reviews the potential applications of the magnetic nanocomposites with mesoporous structures in the areas of heath care, catalysis, and environmental separation. The final section offers a summary and future perspectives on the state-of-the art in this area.
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Affiliation(s)
- Jian Liu
- ARC Centre of Excellence for Functional Nanomaterials, Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, QLD 4072, Australia
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Morales MA, Mascarenhas AJ, Gomes AM, Leite CA, Andrade HM, de Castilho CM, Galembeck F. Synthesis and characterization of magnetic mesoporous particles. J Colloid Interface Sci 2010; 342:269-77. [DOI: 10.1016/j.jcis.2009.10.052] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2009] [Revised: 10/16/2009] [Accepted: 10/21/2009] [Indexed: 10/20/2022]
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Dwivedi N, Sharma S, Bellare J. Ferrite-silica-insulin nanocomposites (FeSINC) for glucose reduction. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:357-361. [PMID: 19731896 DOI: 10.1021/la902094c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Proteins find a more stable environment upon encapsulation in a silica host, because of the polymeric silica frame that grows around the macromolecule and protects them from denaturation. Silica-insulin nanocomposite (SINC) and ferrite-coated SINC (FeSINC) was prepared by polyelectrolytic condensation of silica precursor on insulin and they were studied for their ability to control glucose levels. SINC was prepared by acid-base-catalyzed polymerization in the presence of insulin at room temperature by a modified Stober's process. FeSINC nanoparticles were prepared by coprecipitation of both ferric and ferrous salts on the bovine insulin loaded silica nanoparticle. The presence of ferrite coating in FeSINC was identified using a vibrating sample magnetometer and quantified from XRF study. The intermolecular interactions in these nanocomposites were studied by FTIR and Raman spectroscopy. An in vivo study indicated that FeSINC was biologically active in reducing glucose levels as compared to SINC.
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Affiliation(s)
- Neelam Dwivedi
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Mumbai-400076, India
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Asefa T, Otuonye AN, Wang G, Blair EA, Vathyam R, Denton K. Controlling adsorption and release of drug and small molecules by organic functionalization of mesoporous materials. ADSORPTION 2009. [DOI: 10.1007/s10450-009-9176-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Naka K, Narita A, Tanaka H, Chujo Y, Morita M, Inubushi T, Nishimura I, Hiruta J, Shibayama H, Koga M, Ishibashi S, Seki J, Kizaka-Kondoh S, Hiraoka M. Biomedical applications of imidazolium cation-modified iron oxide nanoparticles. POLYM ADVAN TECHNOL 2008. [DOI: 10.1002/pat.1218] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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27
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Wang Y, Ren J, Liu X, Wang Y, Guo Y, Guo Y, Lu G. Facile synthesis of ordered magnetic mesoporous γ-Fe2O3/SiO2 nanocomposites with diverse mesostructures. J Colloid Interface Sci 2008; 326:158-65. [DOI: 10.1016/j.jcis.2008.07.012] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2008] [Revised: 06/20/2008] [Accepted: 07/08/2008] [Indexed: 11/25/2022]
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28
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Ariga K, Vinu A, Hill JP, Mori T. Coordination chemistry and supramolecular chemistry in mesoporous nanospace. Coord Chem Rev 2007. [DOI: 10.1016/j.ccr.2007.02.024] [Citation(s) in RCA: 143] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Andersson N, Corkery RW, Alberius PCA. One-pot synthesis of well ordered mesoporous magnetic carriers. ACTA ACUST UNITED AC 2007. [DOI: 10.1039/b618502a] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Ordered mesoporous silica-based materials with very high content of substituted heteroatoms from a pH-adjustor of urea. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/s0167-2991(07)81053-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2023]
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31
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Li J, Zhang Z, Zheng Z, Guo L, Xu G, Xie Z. Preparation and magnetic properties of Fe/Si/C/N ceramics derived from a polymeric precursor. J Appl Polym Sci 2007. [DOI: 10.1002/app.26161] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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