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Ma KQ, Han J, Yang CT, Zhang F, Yan H, Wu FC, Hu S, Shi L. Advanced solid-phase extraction of tetravalent actinides using a novel hierarchically porous functionalized silica monolith. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121086] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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2
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Hasanzadeh A, Gholipour B, Rostamnia S, Eftekhari A, Tanomand A, Valizadeh K A, Khaksar S, Khalilov R. Biosynthesis of AgNPs onto the urea-based periodic mesoporous organosilica (Ag xNPs/Ur-PMO) for antibacterial and cell viability assay. J Colloid Interface Sci 2020; 585:676-683. [PMID: 33148449 DOI: 10.1016/j.jcis.2020.10.047] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 10/13/2020] [Accepted: 10/14/2020] [Indexed: 02/05/2023]
Abstract
Nano-size silver particles were stabilized on the inner surfaces of urea based periodic mesoporous organosilica (Ur-PMO). Aqueous extract of Euphorbia leaves as a sustainable and green reducing agent was applied for Ag-nanoparticles growth into the Ur-PMO channels. Physical and chemical properties of organosilica materials synthesized using various techniques such as FT-IR, small-angle XRD, PXRD, FESEM, TEM, SEM-EDX and atomic absorption spectrometry (AAS) were examined. Finally, the AgNPs/Ur-PMO were investigated on cell viability assay. An in vitro cytotoxicity test using MMT assay displayed that the designed material has good biocompatibility and could be a promising candidate for biomedical applications. The results also showed that the AgNPs/Ur-PMO compounds (especially, PMO; 1.27% AgNPs) had relatively good antibacterial and antibiofilm effects. It seems that the use of these compounds in hospital environments can reduce nosocomial infections as well as reduce antibiotic-resistant bacteria.
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Affiliation(s)
- Amir Hasanzadeh
- Maragheh University of Medical Sciences, PO Box: 78151-55158, Maragheh, Iran.
| | - Behnam Gholipour
- Organic and Nano Group (ONG), Department of Chemistry, Faculty of Science, University of Maragheh, PO Box 55181-83111, Maragheh, Iran
| | - Sadegh Rostamnia
- Organic and Nano Group (ONG), Department of Chemistry, Faculty of Science, University of Maragheh, PO Box 55181-83111, Maragheh, Iran; Organic and Nano Group (ONG), Department of Chemistry, Iran University of Science and Technology (IUST), PO Box 16846-13114, Tehran, Iran.
| | - Aziz Eftekhari
- Maragheh University of Medical Sciences, PO Box: 78151-55158, Maragheh, Iran.
| | - Asghar Tanomand
- Maragheh University of Medical Sciences, PO Box: 78151-55158, Maragheh, Iran
| | - Ali Valizadeh K
- Department of Biophysics, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Samad Khaksar
- School of Science and Technology, The University of Georgia, Tbilisi, Georgia
| | - Rovshan Khalilov
- Department of Biophysics and Molecular Biology, Baku State University, Baku, Azerbaijan; Joint Ukraine-Azerbaijan International Research and Education Center of Nanobiotechnology and Functional Nanosystems, Drohobych, Ukraine & Baku, Azerbaijan
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3
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Hussain M, Liu J. Practical synthesis of 4H-pyrido[1, 2-a]pyrimidin-4-ones using ethylene glycol as a promoting solvent. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152269] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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1T/2H-MoS2 engineered by in-situ ethylene glycol intercalation for improved toluene sensing response at room temperature. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2020.02.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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5
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Ilunga AK, Mamba BB, Nkambule TTI. Fabrication of palladium and platinum nanocatalysts stabilized by polyvinylpyrrolidone and their use in the hydrogenolysis of methyl orange. REACTION KINETICS MECHANISMS AND CATALYSIS 2020. [DOI: 10.1007/s11144-020-01746-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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6
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Zhu W, Guo X, Wu L, Yang H. Simulation of the Light Transmittance in Macroporous Silica. MATERIALS 2020; 13:ma13071635. [PMID: 32244830 PMCID: PMC7178299 DOI: 10.3390/ma13071635] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 03/28/2020] [Accepted: 03/30/2020] [Indexed: 11/16/2022]
Abstract
This paper focuses on the light transmittance of macroporous silica as a photocatalyst carrier. In addition to the characteristics of photocatalysts, the structure of porous bulk is also important since it affects the propagation of light. Realistic porous structures are generated by a Voronoi-based approach. Four morphological parameters are highly controlled during generating, that is, porosity, coefficient of variation, diameter ratio and normalized curvature. Finite element method (FEM) is used to simulate the propagation of light in the porous models in the visible light range. The intensity shows a quadratic decrease with the increase of the depth of light propagation. The influences of the morphological parameters on the light transmittance are analysed. It turns out that the porosity has a great influence on the light transmittance while the coefficient of variation and the diameter ratio have small ones. Moreover, the influence of the normalized curvature is little. Besides, the effect of the wavelength of visible light can not be ignored. With the simulation, the depth of visible light entering the porous silica can be estimated, which is challenging to access experimentally.
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Affiliation(s)
- Wenqi Zhu
- Zhejiang-California International Nanosystems Institute, Zhejiang University, Hangzhou 310058, China; (W.Z.); (L.W.)
| | - Xingzhong Guo
- School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China;
| | - Lan Wu
- Zhejiang-California International Nanosystems Institute, Zhejiang University, Hangzhou 310058, China; (W.Z.); (L.W.)
| | - Hui Yang
- Zhejiang-California International Nanosystems Institute, Zhejiang University, Hangzhou 310058, China; (W.Z.); (L.W.)
- School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China;
- Research Institute of Zhejiang University-Taizhou, Taizhou 318000, China
- Correspondence: ; Tel.: +86-0571-8697-1539
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7
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Aqeel T, Bumajdad A. Facile and Direct Preparation of Ultrastable Mesoporous Silica with Silver Nanoclusters: High Surface Area. ChemistryOpen 2020; 9:87-92. [PMID: 31988844 PMCID: PMC6967002 DOI: 10.1002/open.201900275] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 11/07/2019] [Indexed: 11/10/2022] Open
Abstract
We report the successful direct synthesis of an ultrastable mesoporous silicon dioxide framework containing silver nanoclusters using a modified true liquid crystal templating method. Our modification produced an extraordinary material with a high average Brunauer-Emmett-Teller specific surface area of 1785 m2 g-1 - the highest reported surface area to date - and an ultrastable mesoporous structure, which has been stable for nine years so far. This method eliminates the need for reduction of silver oxide into metallic silver and restricts the growth of silver clusters. The silver nanoclusters, with an average size of 1 nm, occupy the pores and walls of the framework. Analysis of the material using nitrogen adsorption/desorption method, high-resolution transmission electron microscopy, X-ray diffractometry, energy-dispersive X-ray diffractometry, X-ray photoelectron spectroscopy, and scanning electron microscopy is discussed herein.
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Affiliation(s)
- Tariq Aqeel
- Department of ScienceCollege of Basic Education The Public Authority of Applied Education and Training (PAAET)P.O. Box 23167Safat13092Kuwait
| | - Ali Bumajdad
- Department of Chemistry, Faculty of ScienceKuwait UniversityP.O. Box 5969Safat13060Kuwait
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8
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Alzahrani E. Green Silver Nanoparticles Confined in Monolithic Silica Disk-packed Spin Column for Human Serum Albumin Preconcentration. CURR ANAL CHEM 2019. [DOI: 10.2174/2210676609666181204151244] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
In recent times many new uses have been found for nanomaterials that have
undergone homogenous immobilization within porous supports. For this paper, immobilization of
SNPs on a thiol-functionalized silica monolith using a fast, easy, environmentally friendly and costeffective
process was performed. This was achieved by modifying the surface of a silica-based
monolith using thiol groups, and then we fabricated green SNPs in situ, reducing an inorganic precursor
silver nitrate solution (AgNO3) by employing tangerine peel extract as a reducing reagent,
with Ag-thiol bonds forming along the monument. Doing this allows monoliths to be prepared in
such a way that, as TEM analysis demonstrated, SNPs are evenly distributed along the rod's length.
Once the materials had been fabricated, they were employed as a sorbent by being placed in a centrifuge.
The SNP-thiol functionalized silica monolith was then tested using a standard protein (HSA).
Methods:
The process involves creating monolithic materials by employing a two-part sol-gel technique
before modifying the surface of the silica-based monolith using thiol groups for hosting purposes.
Homogenous surface coverage was achieved through the use of a non-toxic "green" reducing
reagent (tangerine peel extract) to reduce a silver nitrate solution in place to create SNPs joined to the
pore surface of a thiol-functionalized silica monolith, employing bonds of Ag-thiol. Once these materials
were synthesized, they were classified by utilizing a number of methods based on SEM coupled
with EDAX, TEM, AFM and BET analysis. The silica-based monolith, embedded with constructed
SNPs, was employed as a sorbent in the preconcentration of human serum albumin (HSA).
Results:
The performance of the fabricated materials was measured against a silica-based monolith
with no SNPs. Also, a silica monolith with constructed SNPs embedded was employed to capture
HSA within a sample of human urine mixed with a double detergent concentrate (SDS). Such a
monolith containing functionalized SNPs can be a highly effective sorbent for preconcentration of
proteins in complex samples.
Conclusion:
It was shown to have superior performance compared to a bare silica-based monolith.
Additionally, it was shown that a monolithic column modified by SNPs could preconcentrate spiked
HSA in urine samples.
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Affiliation(s)
- Eman Alzahrani
- Chemistry Department, Faculty of Science, Taif University, Taif, Saudi Arabia
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9
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Abstract
The development of biosensors for a range of analytes from small molecules to proteins to oligonucleotides is an intensely active field. Detection methods based on electrochemistry or on localized surface plasmon responses have advanced through using nanostructured electrodes prepared by electrodeposition, which is capable of preparing a wide range of different structures. Supported nanoparticles can be prepared by electrodeposition through applying fixed potentials, cycling potentials, and fixed current methods. Nanoparticle sizes, shapes, and surface densities can be controlled, and regular structures can be prepared by electrodeposition through templates. The incorporation of multiple nanomaterials into composite films can take advantage of the superior and potentially synergistic properties of each component. Nanostructured electrodes can provide supports for enzymes, antibodies, or oligonucleotides for creating sensors against many targets in areas such as genomic analysis, the detection of protein antigens, or the detection of small molecule metabolites. Detection can also be performed using electrochemical methods, and the nanostructured electrodes can greatly enhance electrochemical responses by carefully designed schemes. Biosensors based on electrodeposited nanostructures can contribute to the advancement of many goals in bioanalytical and clinical chemistry.
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Yang F, Gao S, Ding Y, Tang S, Chen H, Chen J, Liu J, Yang Z, Hu X, Yuan A. Excellent porous environmental nanocatalyst: tactically integrating size-confined highly active MnOx in nanospaces of mesopores enables the promotive catalytic degradation efficiency of organic contaminants. NEW J CHEM 2019. [DOI: 10.1039/c9nj05092b] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A nanoporous molecular sieve catalyst containing size-confined MnOx species, which affords excellent environmental catalytic efficiency, was synthesized using a micelle-assisted in situ embedding strategy.
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Affiliation(s)
- Fu Yang
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- P. R. China
| | - Shuying Gao
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
| | - Yun Ding
- National Engineering Laboratory for Multi Flue Gas Pollution Control Technology and Equipment
- School of Environment
- Tsinghua University
- Yancheng 224001
- China
| | - Sheng Tang
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- P. R. China
| | - Haifeng Chen
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- P. R. China
| | - Jianjun Chen
- National Engineering Laboratory for Multi Flue Gas Pollution Control Technology and Equipment
- School of Environment
- Tsinghua University
- Yancheng 224001
- China
| | - Jianfeng Liu
- Shanghai Waigaoqiao Shipbuilding Co., Ltd
- Shanghai 200137
- China
| | - Zhen Yang
- Shanghai Waigaoqiao Shipbuilding Co., Ltd
- Shanghai 200137
- China
| | - Xiaocai Hu
- Shanghai Waigaoqiao Shipbuilding Co., Ltd
- Shanghai 200137
- China
| | - Aihua Yuan
- School of Environmental and Chemical Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- P. R. China
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11
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Silver nanoparticles-coated monolithic column for in-tube solid-phase microextraction of monounsaturated fatty acid methyl esters. J Chromatogr A 2018; 1585:19-26. [PMID: 30502921 DOI: 10.1016/j.chroma.2018.11.059] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 11/20/2018] [Accepted: 11/21/2018] [Indexed: 12/29/2022]
Abstract
Based on our developed sodium hyaluronate-functionalized urea-formaldehyde (HA-UF) monolith, a silver nanoparticles-coated monolithic column has been fabricated via the interaction between silver nanoparticles (Ag NPs) and HA. The successful coating of Ag NPs on the parent monolith was proven by SEM, EDAX, UV-vis spectrum and XPS. Nitrogen adsorption desorption isotherms and Barret-Joyner-Halenda (BJH) pore size distributions of the parent and resultant monolith were also performed. Due to the Ag+-like affinity interaction caused by the contact of unsaturated compounds and Ag NPs, the Ag NPs-coated monolith showed satisfactory extraction efficiency towards these compounds, and was applied for in-tube solid-phase microextraction (SPME) of monounsaturated fatty acid methyl esters (MUFAMEs). Several factors for in-tube SPME, such as ACN percentage in the sampling solution, elution volume, sampling and elution flow rate, were investigated with respect to the extraction efficiency of model MUFAMEs. Under the optimized SPME conditions, a simple in tube SPME-Ag+-HPLC method for detection of model MUFAMEs has been proposed, the limits of detection (LODs) were less than 5.2 μg/kg, and the recoveries of spiked French fry samples were ranged from 86.6% to 96.1% with relative standard deviations (RSDs) less than 5.2%. This study provided an Ag NPs-coated monolith with good reproducibility and repeatable extraction performance, and developed an efficient method for in-tube SPME of MUFAMEs in practical food samples.
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12
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Moreno-Marrodan C, Barbaro P, Caporali S, Bossola F. Low-Temperature Continuous-Flow Dehydration of Xylose Over Water-Tolerant Niobia-Titania Heterogeneous Catalysts. CHEMSUSCHEM 2018; 11:3649-3660. [PMID: 30106509 DOI: 10.1002/cssc.201801414] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 07/27/2018] [Indexed: 06/08/2023]
Abstract
The sustainable conversion of vegetable biomass-derived feeds to useful chemicals requires innovative routes meeting environmental and economical criteria. The approach herein pursued is the synthesis of water-tolerant, unconventional solid acid monolithic catalysts based on a mixed niobia-titania skeleton building up a hierarchical open-cell network of meso- and macropores, and tailored for use under continuous-flow conditions. The materials were characterized by spectroscopic, microscopy, and diffraction techniques, showing a reproducible isotropic structure and an increasing Lewis/Brønsted acid sites ratio with increasing Nb content. The catalytic dehydration reaction of xylose to furfural was investigated as a representative application. The efficiency of the catalyst was found to be dramatically affected by the niobia content in the titania lattice. The presence of as low as 2 wt % niobium resulted in the highest furfural yield at 140 °C under continuous-flow conditions, by using H2 O/γ-valerolactone as a safe monophasic solvent system. The interception of a transient 2,5-anhydroxylose species suggested the dehydration process occurs via a cyclic intermediates mechanism. The catalytic activity and the formation of the anhydro intermediate were related to the Lewis acid sites (LAS)/Brønsted acid sites (BAS) ratio and indicated a significant contribution of xylose-xylulose isomerization. No significant catalyst deactivation was observed over 4 days usage.
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Affiliation(s)
- Carmen Moreno-Marrodan
- Consiglio Nazionale delle Ricerche, Istituto di Chimica dei Composti Organo Metallici, Via Madonna del Piano 10, 50019 Sesto Fiorentino, Firenze, Italy
| | - Pierluigi Barbaro
- Consiglio Nazionale delle Ricerche, Istituto di Chimica dei Composti Organo Metallici, Via Madonna del Piano 10, 50019 Sesto Fiorentino, Firenze, Italy
| | - Stefano Caporali
- Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali, Via Giusti 9, 50121, Firenze, Italy
- Consiglio Nazionale delle Ricerche, Istituto dei Sistemi Complessi, Via Madonna del Piano 10, 50019 Sesto Fiorentino, Firenze, Italy
| | - Filippo Bossola
- Consiglio Nazionale delle Ricerche, Istituto di Scienze e Tecnologie Molecolari, Via Golgi 19, 20133, Milano, Italy
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13
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Wan X, Wu L, Pei H, Ke H, Yang G, Tang J. Surface functionality density regulated in situ reduction of nanosilver on hierarchial wrinkled mesoporous silica nanoparticles and their antibacterial activity. RSC Adv 2018; 8:19420-19425. [PMID: 35540958 PMCID: PMC9080645 DOI: 10.1039/c8ra02903b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Accepted: 05/16/2018] [Indexed: 11/21/2022] Open
Abstract
Hierarchical wrinkled mesoporous silica nanoparticles (WMS NPs) bedecked with diverse functionality density of amino groups (WMSs-N2, WMSs-NN and WMSs-NNN) were first synthesized via typical Sol–Gel method, and then utilized for the in situ reduction of nanosilver with sodium borohydride. Elegantly distributed Ag NPs (ca. 7–10 nm, 3–5 nm) on WMSs-N2 and WMSs-NN without any agglomeration were obtained respectively, while Ag NPs (ca. 50 nm) dispersed on WMSs-NNN were obviously larger and slightly agglomerated. Compared to pure Ag NPs, all the obtained Ag@WMSs composites were durable and displayed much better antibacterial performance, with a minimal inhibitory concentration of 12–80 mg L−1 and a minimal bactericidal concentration of 24–108 mg L−1, respectively. Moreover, it was found that the functionality density of amino groups and the specific surface area of WMSs played a crucial role for the antibacterial performance of the obtained nanocomposites. Because WMSs-NN had higher specific surface area and surface amino density than WMSs-N2, the size and dispersion of Ag NPs on WMSs-NN were smaller and superior to those of Ag NPs on WMSs-N2, respectively. Accordingly, Ag@WMSs-NN displayed a better antibacterial capacity than Ag@WMSs-N2. As for Ag@WMSs-NNN, owing to the high loading content of Ag NPs, they exhibited the best antibacterial and bactericidal properties. Nanosilver with diverse particle size was attached onto hierarchical WMS, and the resulted samples showed excellent antibacterial properties.![]()
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Affiliation(s)
- Xuejuan Wan
- Shenzhen Key Laboratory of Polymer Science and Technology
- College of Materials Science and Engineering
- Shenzhen University
- Shenzhen 518060
- China
| | - Lisi Wu
- Shenzhen Key Laboratory of Polymer Science and Technology
- College of Materials Science and Engineering
- Shenzhen University
- Shenzhen 518060
- China
| | - Hang Pei
- Shenzhen Key Laboratory of Polymer Science and Technology
- College of Materials Science and Engineering
- Shenzhen University
- Shenzhen 518060
- China
| | - Haoqi Ke
- Shenzhen Key Laboratory of Polymer Science and Technology
- College of Materials Science and Engineering
- Shenzhen University
- Shenzhen 518060
- China
| | - Guanghui Yang
- Shenzhen Key Laboratory of Polymer Science and Technology
- College of Materials Science and Engineering
- Shenzhen University
- Shenzhen 518060
- China
| | - Jiaoning Tang
- Shenzhen Key Laboratory of Polymer Science and Technology
- College of Materials Science and Engineering
- Shenzhen University
- Shenzhen 518060
- China
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14
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Liguori F, Barbaro P, Said B, Galarneau A, Santo VD, Passaglia E, Feis A. Unconventional Pd@Sulfonated Silica Monoliths Catalysts for Selective Partial Hydrogenation Reactions under Continuous Flow. ChemCatChem 2017. [DOI: 10.1002/cctc.201700381] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Francesca Liguori
- Consiglio Nazionale delle Ricerche; Istituto di Chimica dei Composti Organo Metallici; Via Madonna del Piano 10 50019 Sesto Fiorentino, Firenze Italy
| | - Pierluigi Barbaro
- Consiglio Nazionale delle Ricerche; Istituto di Chimica dei Composti Organo Metallici; Via Madonna del Piano 10 50019 Sesto Fiorentino, Firenze Italy
| | - Bilel Said
- Institut Charles Gerhardt Montpellier, UMR 5253 CNRS; Université de Montpellier-ENSCM, ENSCM; 8 rue de l'Ecole Normale 34296 Montpellier Cedex 05 France
| | - Anne Galarneau
- Institut Charles Gerhardt Montpellier, UMR 5253 CNRS; Université de Montpellier-ENSCM, ENSCM; 8 rue de l'Ecole Normale 34296 Montpellier Cedex 05 France
| | - Vladimiro Dal Santo
- Consiglio Nazionale delle Ricerche; Istituto di Scienze e Tecnologie Molecolari; Via Golgi 19 20133 Milano Italy
| | - Elisa Passaglia
- Consiglio Nazionale delle Ricerche; Istituto di Chimica dei Composti Organo Metallici; Via Moruzzi 1 56124 Pisa Italy
| | - Alessandro Feis
- Department of Chemistry; University of Florence; Via della Lastruccia 3-13 50019 Sesto Fiorentino, Firenze Italy
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15
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Yang F, Ding Y, Tang J, Zhou S, Wang B, Kong Y. Oriented surface decoration of (Co-Mn) bimetal oxides on nanospherical porous silica and synergetic effect in biomass-derived 5-hydroxymethylfurfural oxidation. MOLECULAR CATALYSIS 2017. [DOI: 10.1016/j.mcat.2017.03.034] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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16
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Kuthati Y, Kankala RK, Busa P, Lin SX, Deng JP, Mou CY, Lee CH. Phototherapeutic spectrum expansion through synergistic effect of mesoporous silica trio-nanohybrids against antibiotic-resistant gram-negative bacterium. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 169:124-133. [PMID: 28319867 DOI: 10.1016/j.jphotobiol.2017.03.003] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2016] [Revised: 02/23/2017] [Accepted: 03/06/2017] [Indexed: 01/29/2023]
Abstract
The extensive impact of antibiotic resistance has led to the exploration of new anti-bacterial modalities. We designed copper impregnated mesoporous silica nanoparticles (Cu-MSN) with immobilizing silver nanoparticles (SNPs) to apply photodynamic inactivation (PDI) of antibiotic-resistant E. coli. SNPs were decorated over the Cu-MSN surfaces by coordination of silver ions on diamine-functionalized Cu-MSN and further reduced to silver nanoparticles with formalin. We demonstrate that silver is capable of sensitizing the gram-negative bacteria E. coli to a gram-positive specific phototherapeutic agent in vitro; thereby expanding curcumin's phototherapeutic spectrum. The mesoporous structure of Cu-MSN remains intact after the exterior decoration with silver nanoparticles and subsequent curcumin loading through an enhanced effect from copper metal-curcumin affinity interaction. The synthesis, as well as successful assembly of the functional nanomaterials, was confirmed by various physical characterization techniques. Curcumin is capable of producing high amounts of reactive oxygen species (ROS) under light irradiation, which can further improve the silver ion release kinetics for antibacterial activity. In addition, the positive charged modified surfaces of Cu-MSN facilitate antimicrobial response through electrostatic attractions towards negatively charged bacterial cell membranes. The antibacterial action of the synthesized nanocomposites can be activated through a synergistic mechanism of energy transfer of the absorbed light from SNP to curcumin.
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Affiliation(s)
- Yaswanth Kuthati
- Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Hualien 974, Taiwan
| | - Ranjith Kumar Kankala
- Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Hualien 974, Taiwan; College of Chemical Engineering, Huaqiao University, Xiamen, China
| | - Prabhakar Busa
- Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Hualien 974, Taiwan
| | - Shi-Xiang Lin
- Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Hualien 974, Taiwan
| | - Jin-Pei Deng
- Department of Chemistry, Tamkang University, New Taipei City 251, Taiwan
| | - Chung-Yuan Mou
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Chia-Hung Lee
- Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Hualien 974, Taiwan.
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18
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Wan X, Zhuang L, She B, Deng Y, Chen D, Tang J. In-situ reduction of monodisperse nanosilver on hierarchical wrinkled mesoporous silica with radial pore channels and its antibacterial performance. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 65:323-30. [DOI: 10.1016/j.msec.2016.04.058] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Revised: 03/22/2016] [Accepted: 04/14/2016] [Indexed: 10/21/2022]
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19
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Yan X, Li S, Bao J, Zhang N, Fan B, Li R, Liu X, Pan YX. Immobilization of Highly Dispersed Ag Nanoparticles on Carbon Nanotubes Using Electron-Assisted Reduction for Antibacterial Performance. ACS APPLIED MATERIALS & INTERFACES 2016; 8:17060-17067. [PMID: 27327238 DOI: 10.1021/acsami.6b03106] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Silver nanoparticles (Ag NPs) supported on certain materials have been widely used as disinfectants. Yet, to date, the antibacterial activity of the supported Ag NPs is still far below optimum. This is mainly associated with the easy aggregation of Ag NPs on the supporting materials. Herein, an electron-assisted reduction (EAR) method, which is operated at temperatures as low as room temperature and without using any reduction reagent, was employed for immobilizing highly dispersed Ag NPs on aminated-CNTs (Ag/A-CNTs). The average Ag NPs size on the EAR-prepared Ag/A-CNTs is only 3.8 nm, which is much smaller than that on the Ag/A-CNTs fabricated from the traditional thermal calcination (25.5 nm). Compared with Ag/A-CNTs fabricated from traditional thermal calcination, EAR-prepared Ag/A-CNTs shows a much better antibacterial activity to E. coli/S. aureus and antifouling performance to P. subcordiformis/T. lepidoptera. This is mainly originated from the significantly enhanced Ag(+) ion releasing rate and highly dispersed Ag NPs with small size on the EAR-prepared Ag/A-CNTs. The findings from the present work are helpful for fabricating supported Ag NPs with small size and high dispersion for efficient antibacterial process.
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Affiliation(s)
- Xiaoliang Yan
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology , Taiyuan 030024 China
| | - Sha Li
- College of Textile Engineering, Taiyuan University of Technology , Taiyuan 030024, China
| | - Jiehua Bao
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology , Taiyuan 030024 China
| | - Nan Zhang
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology , Taiyuan 030024 China
| | - Binbin Fan
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology , Taiyuan 030024 China
| | - Ruifeng Li
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology , Taiyuan 030024 China
| | - Xuguang Liu
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology , Taiyuan 030024 China
| | - Yun-Xiang Pan
- School of Chemistry and Chemical Engineering, Hefei University of Technology , Heifei 230009, China
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20
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Yang F, Long S, Zhou S, Li X, Liu X, Gao S, Kong Y. Aminosilane decorated carbon template-induced in situ encapsulation of multiple-Ag-cores inside mesoporous hollow silica. RSC Adv 2016. [DOI: 10.1039/c6ra05494c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
A cores@shell structure of microreactor with a well-dispersed active phase of multiple free-Ag-cores, hollow cavity and protective mesoporous shell was prepared by a simple and novel construction approach.
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Affiliation(s)
- Fu Yang
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemistry and Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- China
| | - Saifu Long
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemistry and Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- China
| | - Shijian Zhou
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemistry and Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- China
| | - Xiaoming Li
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemistry and Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- China
| | - Xianfeng Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemistry and Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- China
| | - Shuying Gao
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemistry and Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- China
| | - Yan Kong
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemistry and Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- China
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21
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Yang F, Wang B, Zhou S, Yang X, Kong Y. Template-induced in situ dispersion of enhanced basic-sites on sponge-like mesoporous silica and its improved catalytic property. RSC Adv 2016. [DOI: 10.1039/c6ra21236k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Well-dispersed and enhanced CaO solid base were directly formed on sponge-like mesoporous silica, improved activity occurred at a lower reaction temperature.
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Affiliation(s)
- Fu Yang
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
| | - Bangbang Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
| | - Shijian Zhou
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
| | - Xiaoning Yang
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
| | - Yan Kong
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
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22
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Yang F, Zhou S, Wang H, Long S, Liu X, Kong Y. A metal-assisted templating route (S0M+I−) for fabricating thin-layer CoO covered on the channel of nanospherical-HMS with improved catalytic properties. Dalton Trans 2016; 45:6371-82. [DOI: 10.1039/c5dt04451k] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nanospherical hexagonal mesoporous silica (HMS) with a functional mesochannel covered with thin-layer-dispersed cobalt oxide species was directly fabricatedviaa novel metal-assisted templating method (S0M+I−).
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Affiliation(s)
- Fu Yang
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemistry and Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
| | - Shijian Zhou
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemistry and Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
| | - Haiqing Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemistry and Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
| | - Saifu Long
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemistry and Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- P. R. China
| | - Xianfeng Liu
- 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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23
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Cai X, Zhu W, Yang H, Xu C, Nakanishi K, Kanamori K, Guo X. Preparation of silver nanoparticles embedded hierarchically porous AlPO4 monoliths. NEW J CHEM 2015. [DOI: 10.1039/c5nj00490j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Silver nanoparticles were homogenously embedded on the skeletons of hierarchically porous AlPO4 by immersing the monoliths in a silver colloid.
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Affiliation(s)
- Xiaobo Cai
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou
- China
| | - Wenjun Zhu
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou
- China
| | - Hui Yang
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou
- China
| | - Chenyang Xu
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou
- China
| | - Kazuki Nakanishi
- Department of Chemistry
- Graduate School of Science
- Kyoto University
- Kyoto 606-8502
- Japan
| | - Kazuyoshi Kanamori
- Department of Chemistry
- Graduate School of Science
- Kyoto University
- Kyoto 606-8502
- Japan
| | - Xingzhong Guo
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou
- China
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24
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Svec F, Lv Y. Advances and Recent Trends in the Field of Monolithic Columns for Chromatography. Anal Chem 2014; 87:250-73. [DOI: 10.1021/ac504059c] [Citation(s) in RCA: 279] [Impact Index Per Article: 27.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Frantisek Svec
- International
Research Center
for Soft Matter, Beijing University of Chemical Technology, 100029 Beijing, China
| | - Yongqin Lv
- International
Research Center
for Soft Matter, Beijing University of Chemical Technology, 100029 Beijing, China
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