Particle & Particle Systems Characterization

Cover image for Vol. 33 Issue 9

Early View (Online Version of Record published before inclusion in an issue)

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  1. 1 - 15
  1. Reviews

    1. Copper-Based Nanomaterials for High-Performance Lithium-Ion Batteries

      Jing Xu, Peng Gu, Jian Zhang, Huaiguo Xue and Huan Pang

      Version of Record online: 19 SEP 2016 | DOI: 10.1002/ppsc.201600150

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      Copper-based nanomaterials represent one kind of promising power materials for lithium batteries. Synthesis strategies, tailored material properties, and different electrochemical performances are prominent features of good lithium batteries. Three major types of copper-based nanomaterials are selectively introduced and the comprehensive summaries and evaluations are given in this review.

  2. Full Papers

    1. Facile Fabrication of Anisotropic Colloidal Particles with Controlled Shapes and Shape Dependence of Their Elastic Properties

      Lu Zheng, Peng Huang, Lijing Zhang, Dan Guo and Qingfeng Yan

      Version of Record online: 5 SEP 2016 | DOI: 10.1002/ppsc.201600119

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      Anisotropic colloidal particles with controlled shapes and sizes are fabricated at the air/water interface simply by tuning the incubation time in solvent vapor at room temperature. The elastic properties of anisotropic colloidal particles exhibit prominent changes with different shapes. This demonstration of the relationship between particle shape and elastic property provides information for further studies on particle-based drug delivery processes.

    2. A New Generation of Primary Luminescent Thermometers Based on Silicon Nanoparticles and Operating in Different Media

      Alexandre M. P. Botas, Carlos D. S. Brites, Jeslin Wu, Uwe Kortshagen, Rui N. Pereira, Luís D. Carlos and Rute A. S. Ferreira

      Version of Record online: 5 SEP 2016 | DOI: 10.1002/ppsc.201600198

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      The thermal dependence of the emission peak position of silicon nanoparticles, used as the thermometric parameter, is well-described by the Varshni's law, enabling the development of a self-calibrated luminescent nanothermometer with a calibration curve predicted by such a well-established state equation, avoiding new calibration procedures whenever the thermometer operates in different media.

  3. Reviews

    1. Magnetic Anisotropic Particles: Toward Remotely Actuated Applications

      Boon Mian Teo, David James Young and Xian Jun Loh

      Version of Record online: 2 SEP 2016 | DOI: 10.1002/ppsc.201600060

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      Anisotropic Janus particles are able to endow diverse chemical and physical characteristics with directionality within a single particle. This review focuses on JPs with a magnetic component, with emphasis on their fabrication, unique characteristics and recent applications.

  4. Communications

    1. Single-Layered and Single-Crystalline Graphene Quantum Dots from 2D Polycyclic Compounds

      Biao Yuan, Zheng Xie, Xingming Sun, Jun Yan, Ping Chen and Shuyun Zhou

      Version of Record online: 1 SEP 2016 | DOI: 10.1002/ppsc.201600118

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      Single-layered and single-crystalline graphene quantum dots (GQDs) are exfoliated from 2D conjugated polycycle compounds. The fluorescence properties of the GQDs are determined by the size of the precursors and are responsive to the pH of the GQDs solution. The synthesis method is novel and simple, and can be a general route to exfoliate 2D polycyclic compounds, including macrocyclic compounds, fused ring compounds, heterocyclic compounds and block molecules of 2D planar nanomaterials and polymers into single-layered or single-crystalline GQDs.

    2. Magnetic Poly(Ionic Liquid) Microcapsules for Oil Capture and Recovery

      Ana M. Fernandes, Maria Paulis, Jiayin Yuan and David Mecerreyes

      Version of Record online: 17 AUG 2016 | DOI: 10.1002/ppsc.201600112

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      The preparation of poly(ionic liquid) microcapsules from liquid marbles (3–20 μL) with additional magnetic properties is described in this work. These microcapsules show excellent oil absorption properties and selectivity versus water together with easy manipulation for oil capture and recovery.

  5. Full Papers

    1. Enhanced Exfoliation Effect of Solid Auxiliary Agent On the Synthesis of Biofunctionalized MoS2 Using Grindstone Chemistry

      Jing Wang, Wentao Zhang, Yanru Wang, Wenxin Zhu, Daohong Zhang, Zhonghong Li and Jianlong Wang

      Version of Record online: 17 AUG 2016 | DOI: 10.1002/ppsc.201600114

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      An efficient one-step synthetic method for the fabrication of biofunctionalized MoS2 is shown. Enhanced grindstone chemistry favored by the use of a solid auxi­liary agent results in a high-throughput and large-scale process, which increases the exfoliation efficiency from 16.23% to 58.59% within 1 hour. The as-prepared material can be successfully exploited as a novel biosorbent for PbII removal with excellent adsorption capacity and good recyclability.

    2. Delivery of Small Genetic Molecules through Hollow Porous Nanoparticles Silences Target Gene and in Turn Stimulates Osteoblastic Differentiation

      Jung-Ju Kim, Rajendra K. Singh, Kapil D. Patel and Hae-Won Kim

      Version of Record online: 16 AUG 2016 | DOI: 10.1002/ppsc.201600098

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      The m esoporous hollow form of a silica nanoparticle is developed to load small interfering RNA (siRNA) at high quantity and to deliver it intracellularly in a sustainable manner. The nanoparticle/gene complexes are demonstrated to silence Plekho-1 siRNA in osteoblastic cells effectively, and to then ultimately stimulate the differentiation of osteoblasts, proving to be a promising nanocarrier system for bone repair.

    3. Nano-in-Micro POxylated Polyurea Dendrimers and Chitosan Dry Powder Formulations for Pulmonary Delivery

      Rita B. Restani, A. Sofia Silva, Rita F. Pires, Renato Cabral, Ilídio J. Correia, Teresa Casimiro, Vasco D. B. Bonifácio and Ana Aguiar-Ricardo

      Version of Record online: 3 AUG 2016 | DOI: 10.1002/ppsc.201600123

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      Nano-in-micro dry powder formulations with high swelling rate enable efficient drug delivery to the deep lung. Nontoxic (S)-ibuprofen-loaded nanoparticles are incorporated in chitosan microparticles using supercritical-fluid-assisted spray drying. The biocompatible and biodegradable formulations show high cellular uptake and promising physical and chemical properties, suitable for smart delivery through the lungs for both systemic and local delivery.

  6. Communications

    1. CoSe Hollow Spheres with Dual Functions for Efficient Dye-Sensitized Solar Cells

      Hong Sun, Lu Zhang, Guangrong Zhou and Zhong-Sheng Wang

      Version of Record online: 3 AUG 2016 | DOI: 10.1002/ppsc.201600130

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      CoSe hollow spheres composed of nanoparticles as the counter electrode in dye-sensitized solar cells can not only efficiently catalyze the reduction of I3 to I but also reflect the transmitted light through the photoanode back to dye molecules for higher light harvesting efficiency, achieving power conversion efficiency of 10.35% compared to 8.57% for the Pt-based solar cell.

  7. Full Papers

    1. A New Method for Determining the Composition of Core–Shell Nanoparticles via Dual-EDX+EELS Spectrum Imaging

      David Rossouw, Benjamin R. Knappett, Andrew E. H. Wheatley and Paul A. Midgley

      Version of Record online: 22 JUL 2016 | DOI: 10.1002/ppsc.201600096

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      A new method of determining the composition of spatially overlapping phases in a core–shell nanoparticle system is described. The technique involves the decomposition of simultaneously acquired microanalytical X-ray (green) and electron energy loss signals (red) by independent component analysis, enabling the separation of spatially and spectrally overlapping signal components from both light and heavy elements.

    2. Self-Supporting AuCu@Cu Elongated Pentagonal Bipyramids Toward Neutral Glucose Sensing

      Gang Wang, Zhitong Jin, Meirong Zhang and Zhong-Sheng Wang

      Version of Record online: 20 JUN 2016 | DOI: 10.1002/ppsc.201600077

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      Penta-twinned Cu elongated pentagonal bipyramids are synthesized as supports, and HAuCl4 is reduced in situ to form an AuCu alloy on the surface of Cu, generating a self-supporting AuCu@Cu core–shell structure. The AuCu@Cu elongated pentagonal bipyramids with 0.42 at% Au act as poison-resistant and durable catalyst for glucose sensing in a neutral solution.

    3. Synthesis of Porous NiO Nanorods as High-Performance Anode Materials for Lithium-Ion Batteries

      Qian Li, Gang Huang, Dongming Yin, Yaoming Wu and Limin Wang

      Version of Record online: 20 JUN 2016 | DOI: 10.1002/ppsc.201600084

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      Porous NiO nanorods are synthesized by solvothermal method followed by a thermal treatment process in air. The as-synthesized porous NiO nanorods copy well the morphology of Ni-MIL-77 and the porous character is ascribed to the liberation the gas molecules. When used as anode materials for lithium-ion batteries, the NiO electrode exhibits excellent electrochemical performance.

    4. Amphiphilic Core–Shell Nanocomposite Particles for Enhanced Magnetic Resonance Imaging

      Lianghui Chen, Dechao Niu, Cheng Hao Lee, Yuan Yao, Ki Lui, Kin Man Ho and Pei Li

      Version of Record online: 20 JUN 2016 | DOI: 10.1002/ppsc.201600095

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      A new class of iron-oxide-based magnetic resonance agent with high biocompatibility and enhanced transverse relaxivity is developed. It is based on amphiphilic core–shell nanocomposite particles consisting of biocompatible chitosan shells and poly(methyl methacrylate) cores confining multiple aggregated γ-Fe2O3 nanoparticles.

    5. Imaging the Hydrated Microbe-Metal Interface Using Nanoscale Spectrum Imaging

      Edward A. Lewis, Helen Downie, Richard F. Collins, Eric Prestat, Jonathan R. Lloyd and Sarah J. Haigh

      Version of Record online: 13 JUN 2016 | DOI: 10.1002/ppsc.201600073

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      The first example of elemental mapping of fully hydrated biological nanostructures using scanning transmission electron microscope energy dispersive X-ray spectrum imaging within an environmental liquid-cell is reported. PdAu nanocrystals synthesized by Geobacter sulfurreducens are studied using this novel technique with the aim of better understanding microbial synthesis of bimetallic nanoparticles.

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