| | 1. | Decorating graphene sheets with Pt nanoparticles using sodium citrate as reductant Original Research Article
Applied Surface Science, In Press, Accepted Manuscript, Available online 28 July 2011
Yong Qian, Chunyan Wang, Zhang-Gao Le
Highlights► We demonstrated that sodium citrate could convert GO to GNS for the first time, which was commonly used as an environmentally friendly reducing and stabilizing reagent for Pt nanoparticles preparation. ► A uniform distribution of Pt nanoparticles on the surface of GNS and Pt/GNS hybrid materials can be easily obtained in simple reducing reaction by use of sodium citrate. ► Pt/GNS exhibits high electrochemical activity
| | | | 2. | Synthesis of nanorods and mixed shaped copper ferrite and their applications as liquefied petroleum gas sensor Original Research Article
Applied Surface Science, In Press, Accepted Manuscript, Available online 28 July 2011
Satyendra Singh, B.C. Yadav, Rajiv Prakash, Bharat Bajaj, Jae Rock lee
Highlights► ► Nanocubes/nanospheres and nanorods of copper ferrite were synthesized via co-precipitation method and characterized for their optical, structural and surface morphological properties ► The influence of the surface morphology on the LPG sensing properties of copper ferrite was investigated ► The role of PEG polymer in the synthesis for obtaining uniform sphericals/nanocubes like surface morphology was also demonstrated. Appreciable changes in resistance of nanosized CuFe2O4 upon exposure to LPG in ambient atmosphere recognized nanocubes as a LPG sensor ► It was observed that the CuFe2O4 nanocubes had an improved sensing performance in comparison with that of the CuFe2O4 nanorods ► The sensitivity of these sensing elements to LPG was found better than our previously reported work. Thus, the present study not only explored the possibility of making use of CuFe2O4 nanocubes/sphericals for LPG sensing at room temperature but also effects of surface morphology and the versatility of PEG to yield nanocubes/sphericals copper ferrite
| | | | 3. | Synthesis and Characterization of Parylene C/Nanosilica Composite film Original Research Article
Applied Surface Science, In Press, Accepted Manuscript, Available online 28 July 2011
Xin Chai, Jingquan Liu, Qing He, Guangbin Peng, Chunsheng Yang
Highlights► We prepare Parylene C composite film doped with modified nanosilica particles. ► The nanosilica particles in the film have uniform diameters and distribution. ► The composite exhibits excellent thermal stability and mechanical properties. ► The degradation temperature is about 100? higher than Parylene C film. ► The elastic limit is increased by 10 N.
| | | | 4. | Dynamics of a magnetic nanowire suspended in TN cell under magnetic field Original Research Article
Chemical Physics Letters, In Press, Accepted Manuscript, Available online 28 July 2011
Xiao-Qin Tan, Ming-Ying Zeng, Wei Cui, Chen-Xu Wu
Graphical abstract
Highlights►The dynamics of a nanowire suspended in a TN cell under constant and rotating magnetic field are analyzed. ► Our calculation agrees well with experiments. ► Applied rotating magnetic field leads to a small fluctuation. ► The fluctuation will disappear with increased field frequency or magnitude.
| | | | 6. | Large-scale synthesis of ZnO balls made of fluffy thin nanosheets by simple solution process: Structural, Optical and Photocatalytic properties Original Research Article
Journal of Colloid and Interface Science, In Press, Accepted Manuscript, Available online 28 July 2011
Ahmad Umar, M.S. Chauhan, S. Chauhan, R. Kumar, G. Kumar, S.A. Al-Sayari, S.W. Hwang, A. Al-Hajry
Graphical abstractThis paper reports a large-scale synthesis of ZnO balls made of fluffy thin ZnO nanosheets by simple solution process at low-temperature of 65 ± 2 °C. The synthesized ZnO structures were characterized in detail in terms of their morphological, structural, optical and photocatalytic properties. The as-synthesized ZnO balls were utilized as an efficient photocatalysts for the photocatalytic degradation of methylene blue (MB) dye which exhibits almost complete degradation of MB within 70 minute under UV-light irradiation. The photocatalytic performances of as-synthesized ZnO balls are found to be better than the commercially available TiO2-UV-100. Highlights► ZnO balls made of fluffy thin nanosheets were synthesized and characterized. ► ZnO balls were utilized as an efficient photocatalysts for the photocatalytic degradation of methylene blue (MB) dye. ► Almost complete degradation of MB was observed in presence of ZnO balls composed of nanosheets within 70 minute under UV-light irradiation. ► By comparing the photocatalytic performance with commercially available TiO2-UV-100, it was observed that the synthesized ZnO balls exhibited superior photocatalytic performance as compared to TiO2-UV-100 photocatalyst.
| | | | 7. | Resonance scattering amplification assay of biomolecules based on the biomineralization of gold nanoparticles bioconjugates Original Research Article
Journal of Colloid and Interface Science, In Press, Accepted Manuscript, Available online 28 July 2011
Zhao Liu, Lin Luo, Yanhua Dong, Guojun Weng, Jianjun Li
Graphical abstractThe AuNPs-BSA bioconjugates regrow in the NH2OH·HCl-HAuCl4 system. Different volume of AuNPs bioconjugates were added to the redox system with a fixed ratio of HAuCl4 and NH4OH·HCl. The system was applied to enlarge the size of AuNPs. Then the RLS intensity was measured as a function of the bioconjugates concentration. Au3+ was reduced to Au and selectively amplified the RLS signal of the AuNPs-BSA bioconjugates. Whereas the size of uncapped AuNPs was not enlarged, of which the RLS signal remains comparatively negligible low level (1/422 to the peak of AuNPs-BSA). Thus the interference produced by uncapped AuNPs was comparatively diminished. As shown in Fig. 8, the RLS peak intensity increased gradually with the increasing volume of bioconjugates. Resonance scattering spectrum of the secondary growth product has peaks at 542nm, 584nm and 648nm. As reported before, the peak intensity at 584nm reflects the system. Thus the peak at 584nm was used as the determination signal. As showed in the embedded figure, the RLS peak intensity at 584nm increase linearly with the increase of bioconjugates ranged from 40nmol L-1 to 240nmol L-1. Highlights► We establish a novel method for the quantitative analysis of trace protein. ► AuNPs were used as detection label. ► Resonance scattering spectra (RLS) peaks serve as determination signal. ► The principle of biomineralation was used to selectively intensify the RLS signal.
| | | | 8. | Short Belt-like Ca2B2O5·H2O nanostructures: Hydrothermal formation, FT-IR, thermal decomposition, and optical properties Original Research Article
Journal of Crystal Growth, In Press, Accepted Manuscript, Available online 28 July 2011
Wancheng Zhu, Xiao Zhang, Xiaoli Wang, Heng Zhang, Qiang Zhang, Lan Xiang
Highlights► Hydrothermal synthesis of high crystallinity short belt-like Ca2B2O5·H2O nanostructures (nanobelts); ► Thermal decomposition of Ca2B2O5·H2O nanobelts; ► Thermal conversion route to high crystallinity Ca2B2O5 nanobelts; ► Good transparency of the Ca2B2O5·H2O nanobelts and Ca2B2O5 nanobelts from the ultraviolet to the visible regions.
| | | | 9. | Synthesis, magnetic and dielectric properties of Er-Ni doped Sr-hexaferrite nanomaterials for applications in high density recording media and microwave devices Original Research Article
Journal of Magnetism and Magnetic Materials, In Press, Accepted Manuscript, Available online 28 July 2011
Muhammad Naeem Ashiq, Muhammad Javed Iqbal, Muhammad Najam-ul-Haq, Pablo Hernandez Gomez, Ashfaq Mahmood Qureshi
Highlights► The simple and economic method has been used for the synthesis of materials. ► The main aim for substitution of Er-Ni in Sr-hexaferrite is to improve magnetic properties & to reduce the crystallite size. ► We are able to improve the saturation magnetization and remanence with the doping of Er-Ni. ► The crystallite size is also found in the range of 16-14nm which much smaller as compared to that of reported earlier. ► We are also able to reduce the dielectric constant which make the materials suitable for applications in microwave devices.
| | | | 10. | Erosion Performance and Characterization of Nanolayer (Ti,Cr)N Hard Coatings for Gas Turbine Engine Compressor Blade Applications Original Research Article
Surface and Coatings Technology, In Press, Accepted Manuscript, Available online 28 July 2011
Michael W. Reedy, Timothy J. Eden, John K. Potter, Douglas E. Wolfe
Highlights► First study to examine both (Ti,Cr)N coating erosion and corrosion performance ► TiN and CrN phase volume, hardness, microstructure, substrate biasing investigated ► Increased Cr led to a greater CrN phase volume and decreased erosion performance ► Coatings deposited at lower bias had decreased corrosion resistance
| | | | 11. | Coherent growth and superhardness effect of heterostructure h-TiB2/c-VC nanomultilayers
Vacuum, In Press, Accepted Manuscript, Available online 28 July 2011
Guanqun Li, Yuge Li, Geyang Li
Highlights► In TiB2/VC nanomultilayers. ► (1) When VC layer thickness ≤ 0.8 nm. ► The normally cubic VC layers transform into a metastable structure (hexagonal crystal). ► Coherent interfaces between VC and TiB2 layers have been formed. ► Superhardness effect has been achieved in the films. ► When VC layer thickness ≥1.3 nm. ► VC turns back to be stable cubic structure. ► Coherent interfaces between layers have been disrupted. ► The mechanical properties of the films approach the rule-of-mixture. ► In TiB2/VC nanomultilayers, cubic VC layers can transform into a metastable hexagonal structure. ► Coherent interfaces between VC and TiB2 layers have been formed. ► Superhardness effect has been achieved in the films with VC layer thickness ≤0.8 nm
| | | | 12. | Effects of TiN Coating on the Corrosion of Nanostructured Ti-30Ta-xZr Alloys for Dental Implants Original Research Article
Applied Surface Science, In Press, Accepted Manuscript, Available online 27 July 2011
Won-Gi Kim, Han-Cheol Choe
Highlights► Electrochemical characteristics of a titanium nitride (TiN)-coated/nanotube-formed Ti-30Ta-xZr (x = 3, 7 and 15 wt%) alloys for biomaterials have been researched by using the magnetic sputter and electrochemical methods. ► The interspace between the nanotubes was approximately 20, 80 and 200 nm for Zr contents of 3, 7 and 15 wt %, respectively. ► The corrosion resistance of the TiN-coated on the anodized Ti-30Ta-xZr alloys was higher than that of the un-treated Ti alloys, indicating a better protective effect.
| | | | 13. | Formation of nano dots on GaAs by 50 keV Ar+ ion irradiation Original Research Article
Applied Surface Science, In Press, Accepted Manuscript, Available online 27 July 2011
Tanuj Kumar, S.A. Khan, U.B. Singh, S. Verma, D. Kanjilal
Highlights► Creation of nanodots by energetic ion ► Nanodots are formed on GaAs surface by 50 keV Ar+ ion irradiation. ► Characterization using Atomic Force Microscopy and Micro-Raman spectroscopy are reported. ► Average dot size, density of dots, and rms roughness varied are analyzed with fluence. ► Strain production and relaxation occurred with irradiation.
| | | | 14. | Thermal stability of functionalized carbon nanotubes studied by in-situ transmission electron microscopy Original Research Article
Chemical Physics Letters, In Press, Accepted Manuscript, Available online 27 July 2011
Zhiping Luo, Aderemi Oki, Laura Carson, Luqman Adams, Gururaj Neelgund, Nathaniel Soboyejo, Gloria Regisford, Melisa Stewart, Kemar Hibbert, Gavannie Beharie, Cordella Kelly-Brown, Pasakorn Traisawatwong
Graphical abstract
Highlights► The first study of the thermal stability of functionalized carbon nanotubes using in-situ transmission electron microscopy. ► The thermal stability of the functionalized CNTs was found significantly reduced during the in-situ heating process. ► The average diameter dramatically expanded from RT to about 500 °C, and then tended to be stable until about 1000 °C. ► EDS analysis suggested the coalescence of the carbon structure instead of deposition with additional foreign elements during the heating process.
| | | | 15. | Two-step synthesis method for regular arrays of nano-particles embedded in oxide layers Original Research Article
Chemical Physics Letters, In Press, Accepted Manuscript, Available online 27 July 2011
S. Ostendorp, Y. Lei, G. Wilde
Graphical abstract
Highlights►Nano-particle arrays were transformed into nano-pore arrays by controlled oxidations. ► Oxidized particles remain in the formed nano-porous oxide layer. ► Theoretical calculations describe the overall oxidation process. ► Tunable properties of the formed nano-porous oxide layer allow various applications.
| | | | 16. | Un-Highlighted Characteristics of high sensitivity ethanol gas sensors based on nanostructured spinel Zn1-xCoxAl2O4 Original Research Article
Current Applied Physics, In Press, Accepted Manuscript, Available online 27 July 2011
S.D. Kapse, F.C. Raghuwanshi, V.D. Kapse, D.R. Patil
Highlights► Nanocrystalline Zn1-xCoxAl2O4 (x = 0, 0.2, 0.4, 0.6, 0.8, 1.0) prepared by ethylene glycol mediated citrate sol-gel method. ► XRD analysis confirmed the formation of cubic spinel structure. ► The lattice parameters and unit cell volume of Zn1-xCoxAl2O4 increases with an increase in cobalt content. ► Zn0.4Co0.6Al2O4 sensor element exhibited much higher response, good selectivity and quick response behavior to C2H5OH at 150 °C. ► Zn0.4Co0.6Al2O4 sensor can meet the practical application in ethanol vapor detection.
| | | | 17. | Dielectrophoresis of cellulose nanocrystals and alignment in ultrathin films by electric field-assisted shear assembly Original Research Article
Journal of Colloid and Interface Science, In Press, Accepted Manuscript, Available online 27 July 2011
Levente Csoka, Ingrid C. Hoeger, Perry Peralta, Ilona Peszlen, Orlando J. Rojas
Graphical abstractCellulose nanocrystals were aligned by shear assembly under dielectric constrains. Highlights► Shear assembly can be used to obtain oriented thin films of cellulose nanocrystals. ► The rod-like nanocrystals are oriented according to a field strength and frequency. ► The low electric field strength is suitable for homogeneously oriented films.
| | | | 18. | Synthesis and characterization of cellulose whiskers/polymer nanocomposite dispersion by mini-emulsion polymerization Original Research Article
Journal of Colloid and Interface Science, In Press, Accepted Manuscript, Available online 27 July 2011
Ayman Ben Mabrouk, Manuel Rei Vilar, Albert Magnin, Mohamed Naceur Belgacem, Sami Boufi
Graphical abstractAn simple approach to a one step synthesis of a stable aqueous nanocomposite dispersions based on cellulose whiskers and on polybutylmethacrylate via miniemulsion polymerization is successfully accomplished. Highlights► A one step synthesis of stable aqueous film-forming stable nanocomposite dispersions ► A cationic surfactant was used ensure the binding of whiskers on the polymer particles ► The nanocomposite dispersion leads to a transparent film after coalescence
| | | | 19. | Efficient fabrication of ZrO2-doped TiO2 hollow nanospheres with enhanced photocatalytic activity of rhodamine B degradation Original Research Article
Journal of Colloid and Interface Science, In Press, Accepted Manuscript, Available online 27 July 2011
Chuanzhi Sun, Lichen Liu, Lei Qi, Hao Li, Hongliang Zhang, Changshun Li, Fei Gao, Lin Dong
Graphical abstractTi1-xZrxO2 hollow nanosphere exhibits higher photocatalytic activity than that of TiO2 hollow nanosphere, which is ascribed to increased specific surface areas and band gap. Highlights► ZrO2-doped TiO2 hollow nanospheres are efficiently fabricated without any surfactant or polyelectrolyte. ► The adding of Zr4+ obviously results in change of surface structures, phase structures and pore size distribution. ► The incorporation of Zr4+ induces an enrichment of the electron charge density around Ti4+ ions. ► Ti1-xZrxO2 hollow nanosphere doped moderate ZrO2 exhibits the highest activity.
| | | | 20. | Formation and stability of nanoparticle-stabilised oil-in-water emulsions in a microfluidic chip Original Research Article
Journal of Colloid and Interface Science, In Press, Accepted Manuscript, Available online 27 July 2011
Craig Priest, Mathew D. Reid, Catherine P. Whitby
Graphical abstractThe formation and stability of monodisperse drops stabilised by hydrophobic silica nanoparticles using a flow focusing microchannel junction was studied. Highlights► Oil drop formation in microchannels is insensitive to nanoparticles in the water. ► Potential to independently control the size and particle coverage of drops. ► Just after drops form, particles slow film thinning, but do not halt coalescence. ► At longer times, particles sufficiently pack at the interface to impart stability.
| | | | 21. | Adsorption-desorption mechanism of phosphate by immobilized nano-sized magnetite layer: interface and bulk interactions Original Research Article
Journal of Colloid and Interface Science, In Press, Accepted Manuscript, Available online 27 July 2011
Adva Zach-Maor, Raphael Semiat, Hilla Shemer
Graphical abstractInterface and bulk adsorption and desorption mechanisms of phosphate by a homogenous porous layer of nano-sized magnetite particles immobilized onto granular activated carbon is presented Highlights► Phosphate was initially bonded onto the Fe3O4 surface via bidentate complexation then diffused into the interior layer. ► Phosphate desorption, by alkaline eluent, was predominantly a surface reaction. ► Five successive fix-bed adsorption/regeneration cycles were successfully applied. ► Innovative correlation of adsorption-desorption performance with diffusion mechanism is presented.
| | | | 23. | LPCMO nano-templates grown using substrate induced strain
Materials Science and Engineering: B, In Press, Uncorrected Proof, Available online 27 July 2011
Tara Dhakal, Sunghee Yun, Jacob Tosado, Naveen Margankunte, Amlan Biswas
Highlights► We have successfully grown nano-templates of LPCMO manganites by making use of substrate induced strain. ► The nano-templates grown have the same magnetic and electrical properties of bulk LPCMO manganites. ► The nano-templates of LPCMO are electronic soft matter-like and can be manipulated by electric field. Thus multiferroic coupling can be expected if ferroelectric nano-structures are grown on them.
| | | | 24. | Optical properties of ZnO electrodeposited nanowire arrays on n- and p-type Si(1 1 1): Effects of thermal annealing Original Research Article
Materials Science and Engineering: B, In Press, Uncorrected Proof, Available online 27 July 2011
O. Lupan, Th. Pauporté, I.M. Tiginyanu, V.V. Ursaki, H. Heinrich, L. Chow
Highlights► A new template-free electrochemical deposition method for the synthesis of ZnO nanorods/nanowires directly on n- and p-type silicon (Si) substrates. ► Improved structural, electrical and optical properties of the ZnO nanowires/p-Si (1 1 1) heterojunction have been demonstrated. ► Photodetectors have been fabricated based on the n-ZnO nanowires/p-Si heterojunction obtained by electrodeposition.
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