PubAg

Main content area

You searched for: Journal Journal of materials science Remove constraint Journal: Journal of materials science Publication Year 2017 Remove constraint Publication Year: 2017 Source 2017 v.52 no.11 Remove constraint Source: 2017 v.52 no.11
Start Over

Search

58  Search Results

« Previous | 1 - 20 of 58 |
Number of results to display per page

Search Results

1. A highly sensitive ammonia sensor based on spinous core–shell PCL–PANI fibers

Author:
Zhou, Wei; Guo, Yutong; Zhang, Hui; Su, Yajun; Liu, Mei; Dong, Bin
Source:
Journal of materials science 2017 v.52 no.11 pp. 6554-6566
ISSN:
0022-2461
Subject:
ammonia; aniline; polymerization; volatile organic compounds
Abstract:
... In this paper, we report a unique hierarchical core–shell polycaprolactone–polyaniline fiber with spinous surface structures, which is fabricated by direct in situ oxidative polymerization of aniline on the surface of porous electrospun PCL fibers. Due to the high surface area-to-volume ratio caused by the hierarchical structure, when utilized for ammonia gas sensing, the resulting core–shell fibe ...
DOI:
10.1007/s10853-017-0890-3

2. Anorthite (CaAl2Si2O8)–aluminum interface: kinetics of high-temperature interactions

Author:
Adabifiroozjaei, E.; Ma, H.; Koshy, P.; Sorrell, C. C.
Source:
Journal of materials science 2017 v.52 no.11 pp. 6767-6777
ISSN:
0022-2461
Subject:
activation energy; aluminum; aluminum oxide; calcium; diffusivity; energy-dispersive X-ray analysis; oxygen; scanning electron microscopy; silicon; solubility; transmission electron microscopy
Abstract:
... The kinetics of the anorthite–Al system have been examined by exposing anorthite to pure Al at 850–1150 °C for 0.5–250 h. The interfaces were investigated by electron microscopy (SEM, EDS, EPMA, and TEM). The results showed that Si⁴⁺–Al³⁺ interdiffusion and associated oxygen vacancies plus Ca²⁺–Al³⁺ interdiffusion and associated calcium vacancies drove the anorthite → CA2 and the CA2 → A (alumina) ...
DOI:
10.1007/s10853-017-0913-0

3. A novel octahedral MnO/RGO composite prepared by thermal decomposition as a noble-metal free electrocatalyst for ORR

Author:
Wu, Qiuling; Jiang, Meiling; Zhang, Xiaofeng; Cai, Jiannan; Lin, Shen
Source:
Journal of materials science 2017 v.52 no.11 pp. 6656-6669
ISSN:
0022-2461
Subject:
X-ray diffraction; X-ray photoelectron spectroscopy; batteries; carbon monoxide poisoning; catalysts; differential scanning calorimetry; fuel cells; graphene oxide; methanol; nanoparticles; oxygen; scanning electron microscopy; thermal degradation; thermogravimetry; transmission electron microscopy
Abstract:
... Octahedral MnO/reduced graphene oxide (RGO) composite was synthesized by thermal decomposition method and characterized by XRD, Raman, XPS, TGA/DSC, TEM and SEM. The analysis results show that GO was reduced to RGO, and the octahedral MnO nanoparticles disperse on the RGO sheet by thermal decomposition process. It is important that the as-prepared composite exhibits excellent electrocatalytic perf ...
DOI:
10.1007/s10853-017-0901-4

4. Application of ionic liquid to a high-performance calcium-resistant additive for filtration control of bentonite/water-based drilling fluids

Author:
Yang, Lili; Jiang, Guancheng; Shi, Yawei; Lin, Xin; Yang, Xiao
Source:
Journal of materials science 2017 v.52 no.11 pp. 6362-6375
ISSN:
0022-2461
Subject:
acrylamides; additives; ambient temperature; bentonite; calcium; cations; composite polymers; copolymerization; drilling; filter cake; filtration; ionic liquids
Abstract:
... Bentonite/water-based drilling fluids (BT-WDFs) suffer serious fluid loss particularly at high temperatures, pressure levels, and divalent cation concentrations. The ionic liquid 1-vinyl-3-ethylimidazolium bromide was introduced to synthesize a filtration control additive (PASV) through free radical copolymerization with acrylamide and 2-acrylamido-2-methylpropanesulfonic acid. The effect of the c ...
DOI:
10.1007/s10853-017-0870-7

5. Area-dependent electroforming and switching polarity reversal across TiO2/Nb:SrTiO3 oxide interfaces

Author:
Wang, Jiaying; Nonnenmann, Stephen S.
Source:
Journal of materials science 2017 v.52 no.11 pp. 6469-6475
ISSN:
0022-2461
Subject:
annealing; electric power; electron transfer; oxygen; titanium dioxide
Abstract:
... Vacancy-mediated transport drives the functionality of oxide-based nonvolatile memristive devices. Here, we report the size dependence of TiO₂/Nb:STO heterojunctions for electroforming and the subsequent resistive switching process. Conductive AFM measurements suggest that the forming and reset voltages both decrease with increasing junction size. We also show oxygen flow ratio changes during fabr ...
DOI:
10.1007/s10853-017-0882-3

6. Arsenic adsorption on cobalt and manganese ferrite nanoparticles

Author:
Martinez-Vargas, S.; Martínez, Arturo I.; Hernández-Beteta, Elias E.; Mijangos-Ricardez, O. F.; Vázquez-Hipólito, V.; Patiño-Carachure, C.; Hernandez-Flores, H.; López-Luna, J.
Source:
Journal of materials science 2017 v.52 no.11 pp. 6205-6215
ISSN:
0022-2461
Subject:
adsorption; arsenic; cobalt; ferrimagnetic materials; hot water treatment; manganese; nanoparticles; physical properties; sorption isotherms; stoichiometry
Abstract:
... The adsorption of As(III) on cobalt and manganese ferrite nanoparticles (NPs) was studied. The ferrite NPs were synthesized using the Massart-assisted microwave hydrothermal treatment. All the NPs exhibited the spinel structure with a formula such as M ₓ Fe₃₋ₓ O₄, where M = Co or Mn, and x runs from 0.21 to 1.14. The changes in the stoichiometry caused different effects on the physical properties ...
DOI:
10.1007/s10853-017-0852-9

7. Atomic/molecular layer deposition of hybrid inorganic–organic thin films from erbium guanidinate precursor

Author:
Mai, Lukas; Giedraityte, Zivile; Schmidt, Marcel; Rogalla, Detlef; Scholz, Sven; Wieck, Andreas D.; Devi, Anjana; Karppinen, Maarit
Source:
Journal of materials science 2017 v.52 no.11 pp. 6216-6224
ISSN:
0022-2461
Subject:
absorption; detectors; erbium; photoluminescence
Abstract:
... Luminescent erbium-based inorganic–organic hybrid materials play an important role in many frontier nano-sized applications, such as amplifiers, detectors and OLEDs. Here, we demonstrate the possibility to fabricate high-quality thin films comprising both erbium and an appropriate organic molecule as a luminescence sensitizer utilizing the combined atomic layer deposition and molecular layer depos ...
DOI:
10.1007/s10853-017-0855-6

8. Cage like ordered carboxylic acid functionalized mesoporous silica with enlarged pores for enzyme adsorption

Author:
Yang, Yung-Chin; Deka, Juti Rani; Wu, Cheng-En; Tsai, Cheng-Hsun; Saikia, Diganta; Kao, Hsien-Ming
Source:
Journal of materials science 2017 v.52 no.11 pp. 6322-6340
ISSN:
0022-2461
Subject:
adsorption; composite polymers; immobilized enzymes; leaching; models; pH; papain; particle size; porosity; porous media; silica; sodium; sorption isotherms; temperature
Abstract:
... Cubic FDU-12 type mesoporous silicas with enlarged pores and carboxylic acid (–COOH) functionality in the pore channels (denoted as LP-FTC-x) are synthesized using tetraethyl orthosilicate (TEOS) and carboxyethylsilanetriol sodium salt (CES) as silica sources, Pluronic F127 triblock copolymer as template, and trimethylbenzene (TMB) as pore expander, and utilized them as supports for enzyme immobil ...
DOI:
10.1007/s10853-017-0864-5

9. Cellulose nanocrystal supported superparamagnetic nanorods with aminated silica shell: synthesis and properties

Author:
Ren, Suxia; Zhang, Xiuqiang; Dong, Lili; Lei, Tingzhou; Teng, Zhaogang; Song, Kunlin; Sun, Xiuxuan; Wu, Qinglin
Source:
Journal of materials science 2017 v.52 no.11 pp. 6432-6441
ISSN:
0022-2461
Subject:
cellulose; fluorescent dyes; image analysis; magnetic properties; magnetite; nanocrystals; nanorods; silica; temperature; thermal stability
Abstract:
... Superparamagnetic nanorods consisting of cellulose nanocrystals (CNCs), ferrosoferric oxide (Fe₃O₄), and surface-aminated silica (SiO₂–NH₂) were synthesized for the first time for targeted biomedical applications (i.e., cell imaging). CNCs and Fe₃O₄ were used as the template and magnetic property provider, respectively. The silica was functionized as magnetite core protector and rich amino group s ...
DOI:
10.1007/s10853-017-0878-z

10. Coconut shell powder reinforced thermoplastic polyurethane/natural rubber blend-composites: effect of silane coupling agents on the mechanical and thermal properties of the composites

Author:
Balan, Aparna K.; Mottakkunnu Parambil, Sreejith; Vakyath, Shaniba; Thulissery Velayudhan, Jinitha; Naduparambath, Subair; Etathil, Purushothaman
Source:
Journal of materials science 2017 v.52 no.11 pp. 6712-6725
ISSN:
0022-2461
Subject:
Fourier transform infrared spectroscopy; abrasion resistance; adhesion; coconuts; hardness; polyurethanes; rubber; scanning electron microscopy; silane; tensile strength; thermal stability; thermoplastics
Abstract:
... The objective of this work is to modify coconut shell powder (CSP) using various silane coupling agents and to study the effect of modification on the interfacial adhesion and mechanical properties of the fillers in the binary blend of thermoplastic polyurethane and natural rubber. Mechanical properties such as tensile strength, tear strength, hardness and abrasion resistance were evaluated. Resul ...
DOI:
10.1007/s10853-017-0907-y

11. Co(II) ethylene glycol carboxylates for Co3O4 nanoparticle and nanocomposite formation

Author:
Assim, K.; Schulze, S.; Pügner, M.; Uhlemann, M.; Gemming, T.; Giebeler, L.; Hietschold, M.; Lampke, T.; Lang, H.
Source:
Journal of materials science 2017 v.52 no.11 pp. 6697-6711
ISSN:
0022-2461
Subject:
acids; air; carbon; chemical composition; cobalt; cobalt oxide; crystallites; electrochemistry; ethylene; ethylene glycol; ligands; mass spectrometry; nanocomposites; nanoparticles; oxidation; polymerization; porous media; redox potential; silica; spectral analysis; surface area; thermal degradation; thermogravimetry; transmission electron microscopy
Abstract:
... Ethylene glycol-functionalized Co(II) carboxylates [Co(CO₂CH₂(OC₂H₄) ₙ OMe)₂] (2a, n = 1; 2b, n = 2), [Co(CO₂CHPh(OC₂H₄)₂OMe)₂] (2c) and [Co(CO₂CMe₂(O–C₂H₄)₂OMe)₂] (2d) have been synthesized by the reaction of [Co(OAc)₂·4H₂O] with the corresponding acids MeO(C₂H₄O) ₙ CRR′CO₂H (n = 1, 2; R=H, R′=Me; R=H, R′=Ph). Based on the IR spectroscopic studies, the binding motif of the carboxylato ligands to ...
DOI:
10.1007/s10853-017-0904-1

12. Color-tunable luminescence properties of Sm3+/Dy3+ co-doped NaLa(MoO4)2 phosphors and their energy transfer mechanism

Author:
Kong, Lingzhan; Xiao, Xiuzhen; Yu, Jun; Mao, Dongsen; Lu, Guanzhong
Source:
Journal of materials science 2017 v.52 no.11 pp. 6310-6321
ISSN:
0022-2461
Subject:
color; energy transfer; ions; luminescence; temperature; thermal stability
Abstract:
... The Sm³⁺, Dy³⁺ doped and Sm³⁺/Dy³⁺ co-doped NaLa(MoO₄)₂ spherical phosphors were hydrothermally synthesized by the EDTA-2Na mediated method. Under the excitation of 297 nm, the quenching concentration of Sm³⁺ in NaLa(MoO₄)₂ host was determined to be 13%, and the concentration quenching mechanism was discussed to be the electric quadrupole–quadrupole interaction. After Sm³⁺ and Dy³⁺ ions were co-do ...
DOI:
10.1007/s10853-017-0863-6

13. Comparing photocatalytic activities of commercially available iron-doped and iron-undoped aeroxide TiO2 P25 powders

Author:
Melcher, Johannes; Feroz, Shaik; Bahnemann, Detlef
Source:
Journal of materials science 2017 v.52 no.11 pp. 6341-6348
ISSN:
0022-2461
Subject:
formaldehyde; iron; lighting; methanol; models; oxidation; photocatalysis; photons; powders; titanium dioxide; ultraviolet radiation
Abstract:
... Transition metal doping is an appropriate way to increase the photocatalytic activity of TiO₂ as it offers the chance to also utilize visible light to generate charge carriers. Here, we investigated the photocatalytic activity of commercially available Evonik Aeroxide® TiO₂ P25 and its iron-doped analog Evonik Aeroxide® TiO₂ PF2. For this study, we used as model reaction the photocatalytic oxidati ...
DOI:
10.1007/s10853-017-0865-4

14. Effects of extrusion ratio and annealing treatment on the mechanical properties and microstructure of a Mg–11Gd–4.5Y–1Nd–1.5Zn–0.5Zr (wt%) alloy

Author:
Yu, Zijian; Huang, Yuanding; Gan, Weimin; Zhong, Zhengye; Hort, Norbert; Meng, Jian
Source:
Journal of materials science 2017 v.52 no.11 pp. 6670-6686
ISSN:
0022-2461
Subject:
alloys; annealing; crystallization; extrusion; magnesium; mechanical properties; microstructure; texture
Abstract:
... This study investigates the effects of the extrusion ratio and annealing treatment on the microstructure, texture and mechanical properties of an as-extruded Mg–11Gd–4.5Y–1Nd–1.5Zn–0.5Zr (wt%) alloy. A high extrusion ratio (30:1) results in a homogeneous microstructure with fine dynamic recrystallized (DRXed) grains, while a low extrusion ratio (6:1) leads to a bimodal microstructure with un-DRXed ...
DOI:
10.1007/s10853-017-0902-3

15. Electrical enhancement of radiation-vulcanized natural rubber latex added with reduced graphene oxide additives for supercapacitor electrodes

Author:
Suriani, A. B.; Nurhafizah, M. D.; Mohamed, A.; Masrom, A. K.; Mamat, M. H.; Malek, M. F.; Ahmad, M. K.; Rosmi, M. S.; Tanemura, M.
Source:
Journal of materials science 2017 v.52 no.11 pp. 6611-6622
ISSN:
0022-2461
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; additives; electrical conductivity; electrochemistry; electrodes; graphene oxide; hydrazine; latex; nanocomposites; polymers; rubber; scanning electron microscopy; sodium; sodium dodecyl sulfate; surfactants; transmission electron microscopy
Abstract:
... An insulating polymer, radiation vulcanization natural of rubber latex (RVNRL), was successfully converted into electrically conductive nanocomposite by the addition of reduced graphene oxide (rGO) assisted by sodium 1,4-bis(neopentyloxy)-3-(neopentyloxycarbonyl)-1,4-dioxobutane-2-sulfonate (TC14) surfactant. The starting material, graphene oxide (GO), was initially synthesized by electrochemical ...
DOI:
10.1007/s10853-017-0897-9

16. Electrical resistivity mapping of titanium and zirconium discs processed by high-pressure torsion for homogeneity and phase transformation evaluation

Author:
Haraguchi, Rin; Yoshimatsu, Yuuki; Nagaoka, Takashi; Arita, Makoto; Edalati, Kaveh; Horita, Zenji
Source:
Journal of materials science 2017 v.52 no.11 pp. 6778-6788
ISSN:
0022-2461
Subject:
electrical resistance; hardness; phase transition; titanium; zirconium
Abstract:
... High-pressure torsion (HPT) was applied to discs of pure Ti and Zr under pressures of 2 and 6 GPa, and the evolution of electrical resistivity was investigated. The electrical resistivity increased with increasing the distance from the disc centre in both Ti and Zr, but the distribution of electrical resistivity became more homogenous with increasing the number of HPT turns, i.e. with increasing t ...
DOI:
10.1007/s10853-017-0916-x

17. Electrochemical study of NiO nanosheets: toward the understanding of capacity fading

Author:
Kaspar, Jan; Bazarjani, Mahdi Seifollahi; Schitco, Cristina; Gurlo, Aleksander; Graczyk-Zajac, Magdalena; Riedel, Ralf
Source:
Journal of materials science 2017 v.52 no.11 pp. 6498-6505
ISSN:
0022-2461
Subject:
electrochemistry; electrodes; hydrolysis; ion transport; lithium; nanosheets; nickel; nickel oxide; surface area
Abstract:
... NiO nanosheets are prepared by calcination of nickel hydroxide nanosheets, obtained by the hydrolysis of trans-bis(acetato-κO)bis(2-aminoethanol-κ² N,O)nickel(II) complex. BET analysis reveals the presence of a high specific surface area of 48 m²g⁻¹ and a pore volume of 0.26 cm³g⁻¹ after calcination at 400 °C. The two-dimensional NiO nanostructure undergoes a reversible lithium ion uptake and rele ...
DOI:
10.1007/s10853-017-0885-0

18. Electronic structure, magnetic and optical properties of quaternary Fe2−x Co x MnAl Heusler alloys

Author:
Jain, Vivek Kumar; Lakshmi, N.; Jain, Rakesh; Jain, Vishal; Chandra, Aarti R.; Venugopalan, K.
Source:
Journal of materials science 2017 v.52 no.11 pp. 6800-6811
ISSN:
0022-2461
Subject:
absorption; alloys; cobalt; electromagnetic radiation; energy; iron; photons; photovoltaic cells; refractive index
Abstract:
... Full-potential linearized augmented plane-wave method is used to calculate electronic structure of L2₁-ordered Fe₂MnAl Heusler alloy within WIEN2k code. Exchange correlation is treated using generalized gradient approximation which gives the nearest values to experimental results of lattice constant. On doping Co at Fe site in Fe₂MnAl in the series Fe₂₋ₓ Co ₓ MnAl, nearly 100% spin polarization is ...
DOI:
10.1007/s10853-017-0918-8

19. Electrospun porous nanofibers for electrochemical energy storage

Author:
Li, Zhi; Zhang, Ji-wei; Yu, Lai-gui; Zhang, Jing-wei
Source:
Journal of materials science 2017 v.52 no.11 pp. 6173-6195
ISSN:
0022-2461
Subject:
cost effectiveness; electrochemistry; energy; industrial applications; nanofibers; polymers; transportation
Abstract:
... The demand for energy storage systems is rising due to the rapid development of electric transportation vehicles, and this demand is stimulating research on the next generation of high-performance, high-density energy storage devices. In this work, nanomaterials with excellent electrochemical properties are of particular significance. This review summarizes a variety of methods based on electrospi ...
DOI:
10.1007/s10853-017-0794-2

20. Equal channel angular pressing of a TWIP steel: microstructure and mechanical response

Author:
Wang, L.; Benito, J. A.; Calvo, J.; Cabrera, J. M.
Source:
Journal of materials science 2017 v.52 no.11 pp. 6291-6309
ISSN:
0022-2461
Subject:
deformation; microstructure; pressing; steel; temperature; tensile strength; texture; transmission electron microscopy; twins
Abstract:
... A Fe–20.1Mn–1.23Si–1.72Al–0.5C TWIP steel with ultrafine grain structure was successfully processed through equal channel angular pressing (ECAP) at warm temperature up to four passes following the B C route. The microstructure evolution was characterized by electron backscattered diffraction to obtain the grain maps, which revealed an obvious reduction in grain size, as well as a decrease in the ...
DOI:
10.1007/s10853-017-0862-7