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- 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
-
http://dx.doi.org/10.1007/s10853-017-0890-3
- 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
-
http://dx.doi.org/10.1007/s10853-017-0913-0
- 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
-
http://dx.doi.org/10.1007/s10853-017-0901-4
- 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
-
http://dx.doi.org/10.1007/s10853-017-0870-7
- 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
-
http://dx.doi.org/10.1007/s10853-017-0882-3
- 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
-
http://dx.doi.org/10.1007/s10853-017-0852-9
- 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
-
http://dx.doi.org/10.1007/s10853-017-0855-6
- 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
-
http://dx.doi.org/10.1007/s10853-017-0864-5
- 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
-
http://dx.doi.org/10.1007/s10853-017-0878-z
- 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
-
http://dx.doi.org/10.1007/s10853-017-0907-y
- 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
-
http://dx.doi.org/10.1007/s10853-017-0904-1
- 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
-
http://dx.doi.org/10.1007/s10853-017-0863-6
- 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
-
http://dx.doi.org/10.1007/s10853-017-0865-4
- 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
-
http://dx.doi.org/10.1007/s10853-017-0902-3
- 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
-
http://dx.doi.org/10.1007/s10853-017-0897-9
- 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
-
http://dx.doi.org/10.1007/s10853-017-0916-x
- 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
-
http://dx.doi.org/10.1007/s10853-017-0885-0
- 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
-
http://dx.doi.org/10.1007/s10853-017-0918-8
- 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
-
http://dx.doi.org/10.1007/s10853-017-0794-2
- 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
-
http://dx.doi.org/10.1007/s10853-017-0862-7