A facile synthesis of Te nanoparticles with binary size distribution by green chemistry

He, Weidong; Krejci, Alex J.; Lin, Junhao; Osmulski, Max E.; Dickerson, James H.

doi:10.1039/c1nr10025d

Cited by 29 publications

(16 citation statements)

References 42 publications

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“…Ostwald ripening (OR) and oriented-attachment (OA) are two typical growth mechanisms of colloidal nanocrystals. [1][2][3][4][5] In recent years, the OA growth of solids in colloidal systems has evolved to be a well-recognized form of crystal growth and has been frequently employed to explain the formation and growth of various nanostructures including zero-dimensional (0D) nanoparticles (NPs), one-dimensional (1D) nanorods (NRs), two-dimensional (2D) nanosheets and macroscopic objects. Until now, major efforts on the OA growth of solids have been focused on two trajectories.…”

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confidence: 99%

An insight into the Coulombic interaction in the dynamic growth of oriented-attachment nanorods

2014

CrystEngComm

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An insight into the Coulombic interaction in the dynamic growth of oriented-attachment nanorods Weidong HeThe dynamic evolution of the Coulombic interaction between a growing nanorod and an attaching nanoparticle in orientedattachment growth is investigated via a recently-derived Coulombic interaction expression. With the incorporation of aspect ratio into each evaluation, the correlation between the Coulombic interaction and parameters including charge density, aspect ratio, synthetic temperature and nanoparticle-nanorod separation, is analyzed in detail.The analysis largely improves our understanding of the dynamic oriented-attachment growth from a fundamental energy perspective.

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An insight into the Coulombic interaction in the dynamic growth of oriented-attachment nanorods

2014

CrystEngComm

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“…The problem with traditional thin electrodes is their short lifetime due to their poor mechanical strength. Efficient deposition techniques, such as electrophoretic deposition, are known to be capable of assembling highly porous nanostructures such as nanoporous Si into uniform thin films with robust mechanical strength 17, 18. Using these deposition methods, the thickness, as well as the lifetime, of nanostructured electrodes and electrolytes can be much enhanced without sacrificing their performance 19–25.…”

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A Multisensor Device for Highly Efficient Diffusivity Measurements and Overall‐Concentration‐Polarization Evaluation in Fuel Cells

He¹,

Wang²

2012

Advanced Energy Materials

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“…Fifth, as we mentioned above, as a high voltage is applied hydrogen and oxygen are easily formed in an aqueous solvent due to water electrolysis, leading to unexpected side reactions in EPD . Although device assembly via EPD still cannot ensure the stability or continuity as required in large‐scale industrial manufacture, upon executing the aforementioned research trajectories, EPD is expected to provide an efficient platform to assemble nanocrystals as components of next‐generation high‐performance energy conversion and energy devices …”

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Highly Efficient Materials Assembly Via Electrophoretic Deposition for Electrochemical Energy Conversion and Storage Devices

Wen

Zhang

et al. 2016

Advanced Energy Materials

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and fi lms can be assembled on substrates with this versatile method. Film thickness, particle size and inter structure of EPD fi lms are controllable by adjusting the suspension/process parameters. [ 2,3 ] Energy conversion and storage devices have been developed rapidly in the past few decades, and proposed as the foundation of modern society. Novel carbon materials such as graphene and carbon nanotubes (CNTs) are investigated widely for high-effi ciency rechargeable battery and supercapacitor (SC) applications. [ 4,5 ] Traditional methods such as blade coating and slot die are employed to prepare electrodes to realize such applications. [ 6,7 ] In these methods, active materials are dissolved into a solvent to form a viscous solution, and a fi lm is obtained after coating and solvent evaporation. Nevertheless, neither thickness control nor a high fi lm assembly effi ciency can be realized via these methods. In addition, traditional methods exhibit limitation on the fabrication of nanostructured energy materials due to the aggregation of nanoparticles. On the other hand, methods for micro-batteries such as vapor deposition methods, [ 8 ] radio-frequency sputtering, [ 9 ] and pulsed laser deposition [ 10,11 ] are expensive and diffi cult to scale up. Indeed, a versatile EPD technique with cost-effectiveness, short formation time, and high scalability is promising for efficient fabrication of energy conversion and storage materials and devices. A typical EPD process is performed in two steps, including the dispersion of powder particles in a solvent to form a stable suspension and the deposition of particles on a substrate in the presence of an electric fi eld. [ 12,13 ] Preparation of a stable suspension is essential to the deposition process. The stability of suspension, adjustable with surfactants, is correlated with electrostatic repulsive and van der Waals attractive interactions. The stability of suspension/colloid is characterized by zeta potential, the value of which represents the magnitude of repulsive interaction while the sign represents the migration direction of particles. Zeta potential is mainly determined by temperature, pH, and type of surfactant. On the other hand, the migration velocity of particles in deposition depends on the applied voltage/current, particle size, zeta potential, suspension concentration, and solvent viscosity. [ 14 ] The utilization of EPD in the energy storage/conversion devices fi eld enables the direct deposition of active particles on the current collector.Featuring pronounced controllability, versatility, and scalability, electrophoretic deposition (EPD) has been proposed as an effi cient method for fi lm assembly and electrode/solid electrolyte fabrication in various energy storage/conversion devices including rechargeable batteries, supercapacitors, and fuel cells. High-quality electrodes and solid electrolytes have been prepared through EPD and exhibit advantageous performances in comparison with those realized with traditional methods. Recent advances in the appli...

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A facile synthesis of Te nanoparticles with binary size distribution by green chemistry

Cited by 29 publications

References 42 publications

An insight into the Coulombic interaction in the dynamic growth of oriented-attachment nanorods

An insight into the Coulombic interaction in the dynamic growth of oriented-attachment nanorods

A Multisensor Device for Highly Efficient Diffusivity Measurements and Overall‐Concentration‐Polarization Evaluation in Fuel Cells

Highly Efficient Materials Assembly Via Electrophoretic Deposition for Electrochemical Energy Conversion and Storage Devices

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