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You searched for: Journal name RSC advances Remove constraint Journal name: RSC advances Publication year rev 7984-2016 Remove constraint Publication year rev: 7984-2016 Source 2016 v.6 no.95 Remove constraint Source: 2016 v.6 no.95
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1. 4-Dialkylaminopyridine modified magnetic nanoparticles: as an efficient nano-organocatalyst for one-pot synthesis of 2-amino-4H-chromene-3-carbonitrile derivatives in water

Author:
Soheila Khajeh Dangolani; Farhad Panahi; Maryam Nourisefat; Ali Khalafi-Nezhad
Source:
RSC advances 2016 v.6 no.95 pp. 92316-92324
ISSN:
2046-2069
Subject:
catalysts; catalytic activity; hydrogen peroxide; iron oxides; magnetism; moieties; nanoparticles; oxidation; silane; silica; solvents; synthesis
Abstract:
... A novel heterogeneous magnetic nano-organocatalyst was developed using immobilization of 4-dialkylaminopyridine moieties on Fe₃O₄ magnetic nanoparticles (MNP–DMAP). It was synthesized using the reaction of MNP-oxiran (MNPO) with N-methylpyridin-4-amine. The MNPO substrate was produced via oxidation of vinyl groups on the surface of vinyl-functionalized MNP (VMNP) using H₂O₂. To synthesis VMNP, sil ...
DOI:
10.1039/c6ra18078g

2. Adsorptive removal of dimethyl disulfide from methyl tert-butyl ether using an Ag-exchanged ZSM-5 zeolite

Author:
Ya-wei Zhao; Ben-xian Shen; Hui Sun
Source:
RSC advances 2016 v.6 no.95 pp. 93086-93093
ISSN:
2046-2069
Subject:
Lewis acids; X-ray diffraction; acidity; activation energy; adsorbents; adsorption; air; dimethyl disulfide; endothermy; ion exchange; nitrogen; silver; sorption isotherms; zeolites
Abstract:
... Ion-exchange modification can largely change the adsorption ability of various adsorbents of zeolite. A series of Ag-exchanged ZSM-5 zeolites were prepared using an ion-exchange method and used to remove dimethyl disulfide (DMDS) from methyl tert-butyl ether (MTBE). The structural properties and acidity of the modified zeolite were examined using X-ray diffraction, N₂ adsorption, NH₃-TPD and Py-IR ...
DOI:
10.1039/c6ra17741g

3. Application of biological-based nano and nano magnetic catalysts in the preparation of arylbispyranylmethanes

Author:
Mohammad Ali Zolfigol; Monireh Navazeni; Meysam Yarie; Roya Ayazi-Nasrabadi
Source:
RSC advances 2016 v.6 no.95 pp. 92862-92868
ISSN:
2046-2069
Subject:
aldehydes; catalysts; condensation reactions; magnetism; moieties; urea
Abstract:
... Herein, the utilization of 2-carbamoylhydrazine-1-sulfonic acid, carbamoylsulfamic acid and their related nano magnetic core–shell catalysts were described as biological-based nano catalysts with a urea moiety in the synthesis of arylbispyranylmethane derivatives under mild and eco-friendly reaction conditions. A good range of aromatic aldehydes were treated with 4-hydroxy-6-methyl-2-pyrone to giv ...
DOI:
10.1039/c6ra18719f

4. Bioactive borophosphosilicate-polycaprolactone hybrid biomaterials via a non-aqueous sol gel process

Author:
Dibakar Mondal; Amin S. Rizkalla; Kibret Mequanint
Source:
RSC advances 2016 v.6 no.95 pp. 92824-92832
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; biocompatible materials; body fluids; bones; borates; chemical bonding; chemical reactions; energy-dispersive X-ray analysis; glass; hydroxyapatite; nuclear magnetic resonance spectroscopy; silicon; sol-gel processing; thermogravimetry; tissue engineering
Abstract:
... In this study, a non-aqueous sol–gel process was utilized to prepare novel class II hybrid biomaterials based on functionalized polycaprolactone (PCL) diol and borophosphosilicate glass (BPSG) as potential scaffold material for bone tissue engineering applications. PCL diol was first functionalized by reacting with (3-glycidoxypropyl)trimethoxysilane. The functionalized PCL (PCL–Si) was condensed ...
DOI:
10.1039/c6ra08339k

5. Biologically synthesized crude calcium lactate as a substrate for propylene glycol production

Author:
M. Binczarski; J. Berlowska; A. Stanishevsky; I. Witonska
Source:
RSC advances 2016 v.6 no.95 pp. 92420-92427
ISSN:
2046-2069
Subject:
activated carbon; calcium; carbohydrates; catalysts; catalytic activity; feedstocks; fermentation; hydrogenation; ions; lactic acid; pH; propylene glycol; ruthenium; sugar beet pulp
Abstract:
... Lactic acid (LA) can be obtained easily through fermentation of saccharides, and is an extremely useful building block for the synthesis of valuable chemicals, including propylene glycol (PG). Catalysis is one of the key elements in this platform approach. The present study focuses on PG synthesis via catalytic hydrogenation of lactate ions. In the conventional biological method, separation and do ...
DOI:
10.1039/c6ra20722g

6. A CTAB-modified S/C nanocomposite cathode for high performance Li–S batteries

Author:
Xiuzhen Wang; Sai Qin; Pingping Sun; Yueming Sun; Qingyu Xu; Changwei Lai; Qi Fan
Source:
RSC advances 2016 v.6 no.95 pp. 92621-92628
ISSN:
2046-2069
Subject:
batteries; carbon nanotubes; cathodes; cetyltrimethylammonium bromide; foams; graphene oxide; nanocomposites; nickel
Abstract:
... Two unique S/C/Ni foam nanostructure electrodes are fabricated by a facile cetyltrimethyl ammonium bromide (CTAB) modified electrodeposition method. With this strategy, S nanodots and carbon nanocomposites (carbon nanotube (CNT) or reduced graphene oxide (RGO)) are directly deposited onto the Ni foams, which obviously increase the S loading and electron/ion conductivity of the whole electrodes. As ...
DOI:
10.1039/c6ra16361k

7. Carbon nano-onions: large-scale preparation, functionalization and their application as anode material for rechargeable lithium ion batteries

Author:
Yanbin Zheng; Pinwen Zhu
Source:
RSC advances 2016 v.6 no.95 pp. 92285-92298
ISSN:
2046-2069
Subject:
annealing; anodes; fullerene; lithium batteries; nanodiamonds; physicochemical properties; surface area; vapors
Abstract:
... Carbon nano-onions (CNOs) are one of the most promising anode materials for lithium ion batteries (LIBs) because of their outstanding physicochemical properties. In this review, large-scale preparation methods of CNOs, including both traditional and some newly developed approaches in recent years, are summarized. For three of the most important methods of synthesis, arc discharge in water, chemica ...
DOI:
10.1039/c6ra19060j

8. Cellulose-based spreadable new thixo gels: synthesis and their characterization

Author:
Naresh D. Sanandiya; A. K. Siddhanta
Source:
RSC advances 2016 v.6 no.95 pp. 92953-92961
ISSN:
2046-2069
Subject:
2,2-diphenyl-1-picrylhydrazyl; Fourier transform infrared spectroscopy; Salicornia; aminobenzoic acids; antioxidant activity; carboxymethylcellulose; gels; halophytes; microwave treatment; nuclear magnetic resonance spectroscopy; thermal analysis
Abstract:
... Carboxymethyl cellulose (CMC) based new thixotropic gels were synthesized by a facile microwave-induced reaction of aminobenzoic acids (ABAs) e.g. para- and meta-aminobenzoic acids. Cellulose of the halophytic plant Salicornia brachiata was employed in this investigation. These derivatives were characterized by FT-IR, ¹³C NMR spectra, thermal analyses and surface morphology studies. These compound ...
DOI:
10.1039/c6ra19264e

9. Comment on “The size and structure of selected hydrated ions and implications for ion channel selectivity” by Z.-H. Yang, RSC. Adv., 2015, 5, 1213.

Author:
Andreas A. Zavitsas
Source:
RSC advances 2016 v.6 no.95 pp. 92771-92777
ISSN:
2046-2069
Subject:
aqueous solutions; ion channels; ions; temperature
Abstract:
... Common misconceptions about the properties of water solutions appear in the work of Yang (RSC Adv., 2015, 5, 1213). The issues addressed pertain to all aspects of the properties and behaviors of aqueous solutions of strong electrolytes: proper hydration numbers and their dependence on temperature, the extent of ion pair formation and its effect on hydration numbers, and the correct form of the equ ...
DOI:
10.1039/c6ra13733d

10. Correction: Study on a hydrophobic Ti-doped hydroxyapatite coating for corrosion protection of a titanium based alloy

Author:
M. A. Surmeneva; A. Vladescu; R. A. Surmenev; C. M. Pantilimon; M. Braic; C. M. Cotrut
Source:
RSC advances 2016 v.6 no.95 pp. 92418-92419
ISSN:
2046-2069
Subject:
alloys; coatings; corrosion; hydrophobicity; hydroxyapatite; titanium
Abstract:
... Correction for ‘Study on a hydrophobic Ti-doped hydroxyapatite coating for corrosion protection of a titanium based alloy‘ by M. A. Surmeneva et al., RSC Adv., 2016, 6, 87665–87674. ...
DOI:
10.1039/c6ra90096h

11. Correction: γ-Radiation fabrication of porous permutite/carbon nanobeads/alginic acid nanocomposites and their adsorption properties for Cs⁺

Author:
Ling Chang; Shuquan Chang; Wei Han; Wei Chen; Zheng Li; Zheng Zhang; Yaodong Dai; Da Chen
Source:
RSC advances 2016 v.6 no.95 pp. 92417
ISSN:
2046-2069
Subject:
adsorption; alginates; carbon; cesium; gamma radiation; nanocomposites; nanoparticles
Abstract:
... Correction for ‘γ-Radiation fabrication of porous permutite/carbon nanobeads/alginic acid nanocomposites and their adsorption properties for Cs⁺’ by Ling Chang et al., RSC Adv., 2016, 6, 86829–86835. ...
DOI:
10.1039/c6ra90097f

12. Design and synthesis of hyperbranched polyimide containing multi-triphenylamine moieties for memory devices

Author:
Ying Song; Hongyan Yao; Yunxia Lv; Shiyang Zhu; Shanyou Liu; Shaowei Guan
Source:
RSC advances 2016 v.6 no.95 pp. 93094-93102
ISSN:
2046-2069
Subject:
aluminum; anhydrides; aromatic amines; computer hardware; electric potential difference; indium tin oxide; moieties; molecular dynamics; polymers; thermal stability
Abstract:
... A novel triamine monomer, N,N′,N′′-tris(4-methoxyphenyl)-N,N′,N′′-tris(4-phenylamino)-1,3,5-benzenetriamine, was designed and synthesized. A hyperbranched polyimide (HBPI) was prepared by reacting the triamine monomer with 4,4-(hexafluoroisopropylidene)diphthalic anhydride for application in memory devices. The resulting HBPI exhibited excellent organo-solubility and high thermal stability. A memo ...
DOI:
10.1039/c6ra20353a

13. Design of boronic acid-attributed carbon dots on inhibits HIV-1 entry

Author:
M. Z. Fahmi; W. Sukmayani; Siti Qamariyah Khairunisa; A. M. Witaningrum; D. W. Indriati; M. Q. Y. Matondang; J.-Y. Chang; T. Kotaki; M. Kameoka
Source:
RSC advances 2016 v.6 no.95 pp. 92996-93002
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; HIV infections; Human immunodeficiency virus 1; X-ray photoelectron spectroscopy; antiretroviral agents; boronic acids; carbon quantum dots; citric acid; cytotoxicity; drugs; giant cells; moieties; pyrolysis; therapeutics
Abstract:
... The development of gp120 targeted human immunodeficiency virus (HIV) drug has improved antiretroviral therapies owing to its effects on attachment to target cells. Some currently available antiretroviral therapies that act by inhibiting viral infection still are limited on the toxicity issues; therefore, novel approaches to treat and prevent HIV infections are still needed. Herein, we introduce ca ...
DOI:
10.1039/c6ra21062g

14. Direct gas-phase formation of complex core–shell and three-layer Mn–Bi nanoparticles

Author:
P. Mukherjee; B. Balamurugan; J. E. Shield; D. J. Sellmyer
Source:
RSC advances 2016 v.6 no.95 pp. 92765-92770
ISSN:
2046-2069
Subject:
bismuth; chemical composition; crystal structure; energy-dispersive X-ray analysis; gases; hysteresis; image analysis; magnetism; manganese; nanoparticles; transmission electron microscopy
Abstract:
... We report the formation of complex core–shell and three-layer Mn–Bi nanoparticles in a single step inert-gas condensation process. These structures have been achieved by controlling the thermal environment of the nanoparticles. High resolution transmission electron microscopy, high-angle annular dark-field imaging in scanning transmission electron microscopy mode, and elemental mapping by energy d ...
DOI:
10.1039/c6ra15799h

15. Effects of an alkali-acid purification process on the characteristics of eucalyptus lignin fractionated from a MIBK-based organosolv process

Author:
Thepparat Klamrassamee; Tana Tana; Navadol Laosiripojana; Lalehvash Moghaddam; Zhanying Zhang; Jorge Rencoret; Ana Gutierrez; José C. del Rio; William O. S. Doherty
Source:
RSC advances 2016 v.6 no.95 pp. 92638-92647
ISSN:
2046-2069
Subject:
Eucalyptus; acetone; carbohydrates; dimethyl sulfoxide; ethanol; fractionation; gas chromatography-mass spectrometry; lignin; methanol; molecular weight; nitrogen; nuclear magnetic resonance spectroscopy; purification methods; solubility; solvents; sulfur; temperature; tetrahydrofuran; thermal stability
Abstract:
... In this study, the effects of an alkali-acid purification process on the properties of eucalyptus lignin isolated from a methyl isobutyl ketone (MIBK)/methanol/water-based organosolv fractionation process were evaluated. The results showed that the treatment reduced the content of carbohydrates, ash, nitrogen and sulfur, and improved lignin solubility (up to 218%) in five organic solvents (acetone ...
DOI:
10.1039/c6ra20081h

16. Effects of hydrogen bonding between MWCNT and PPS on the properties of PPS/MWCNT composites

Author:
Maliang Zhang; Xiaotian Wang; Chenyang Li; Yali Bai; Bowen Cheng; Zhenhuan Li
Source:
RSC advances 2016 v.6 no.95 pp. 92378-92386
ISSN:
2046-2069
Subject:
carbon nanotubes; electrical conductivity; hydrogen bonding; mixing; strength (mechanics)
Abstract:
... PPS/MWCNT composites were prepared from polyphenylene sulfide (PPS) and hydroxyl multi-walled carbon nanotubes (MWCNT-OH) or carboxyl multi-walled carbon nanotubes (MWCNT-COOH) by the 1-chloronaphthalene blending method, and the effects of noncovalent interaction between PPS and fillers on the properties of the composites were studied. It was found that MWCNT-COOH could be easily dispersed into PP ...
DOI:
10.1039/c6ra19119c

17. Effects of immobilized VEGF on endothelial progenitor cells cultured on silicon substituted and nanocrystalline hydroxyapatites

Author:
M. J. Feito; M. C. Serrano; M. Oñaderra; M. C. Matesanz; S. Sánchez-Salcedo; D. Arcos; M. Vallet-Regí; M. T. Portolés
Source:
RSC advances 2016 v.6 no.95 pp. 92586-92595
ISSN:
2046-2069
Subject:
angiogenesis; bone formation; bone marrow cells; coatings; crystallites; homeostasis; hydroxyapatite; nanocrystals; silica; silicon; stem cells; tissue engineering; topography; vascular endothelial growth factors
Abstract:
... Vascular endothelial growth factor (VEGF) plays an essential role in angiogenesis and vascular homeostasis. Endothelial progenitor cells (EPCs) are primitive bone marrow cells participating in neovascularization and revascularization processes, which also promote bone regeneration. Synthetic hydroxyapatite (HA) has been widely used in bone repair and implant coatings. In HA-based materials, small ...
DOI:
10.1039/c6ra19154a

18. Efficient photodecomposition of rhodamine B by an Fe-based metallic glass in an oxalic acid solution

Author:
Xingzhou Li; Ye Pan; Jili Wu; Tao Lu; Ning Wang
Source:
RSC advances 2016 v.6 no.95 pp. 92411-92416
ISSN:
2046-2069
Subject:
catalysts; glass; industrial wastewater treatment; iron; oxalic acid; photolysis; rhodamines; ultraviolet radiation; wavelengths
Abstract:
... Fe-based metallic glass (amorphous Fe–Si–B ribbons) was successfully fabricated and shown to be an efficient catalyst of the photo-decomposition of rhodamine B (RhB). The effects of various factors on the photodecomposition were investigated. The catalyst dosage and the wavelength and intensity of the light source were all found to strongly influence the reaction rate. A nearly complete degradatio ...
DOI:
10.1039/c6ra21273e

19. Electrochemical and spectroscopic insights of interactions between alizarin red S and arsenite ions

Author:
Nahida Tanjila; Asif Rayhan; Md. Saiful Alam; Iqbal A. Siddiquey; Mohammad A. Hasnat
Source:
RSC advances 2016 v.6 no.95 pp. 93162-93168
ISSN:
2046-2069
Subject:
alizarin; arsenites; diffusivity; electrochemistry; electrodes; ions; oxidation; spectroscopy
Abstract:
... Interferences of arsenite ions on electrocatalytic oxidation of alizarin red S (ARS) was studied using Pt and ITO electrodes. A Pt electrode can oxidize both arsenite ions and ARS molecules simultaneously. The oxidation wave of ARS exceeds that of arsenite until the [AsO₂⁻]/[ARS] ratio surpasses 0.07. Meanwhile, an ITO electrode can oxidize only ARS molecules. It was seen that the diffusion coeffi ...
DOI:
10.1039/c6ra21356a

20. Emergence of low dimensional ferroelectricity in Pr₀.₆₇Ca₀.₃₃MnO₃ nanocrystal arrays

Author:
Vinay Kumar Shukla; Soumik Mukhopadhyay
Source:
RSC advances 2016 v.6 no.95 pp. 93130-93136
ISSN:
2046-2069
Subject:
Raman spectroscopy; ambient temperature; electric field; hysteresis; models; nanocrystals; silicon
Abstract:
... We discuss the emergence of low dimensional ferroelectricity in self-organized Pr₀.₆₇Ca₀.₃₃MnO₃ nanocrystalline arrays deposited on a Si substrate. We observe sharp switching of the electric polarization under an external electric field with nearly rectangular hysteresis loops which persist up to 150 K. We discuss the polarization switching kinetics within the framework of the Kolmogorov–Avrami–Is ...
DOI:
10.1039/c6ra19632b