Electrosprayed graphene decorated with ZnO

Further X-ray diffraction analysis confirmed that ZnO growth was preferentially oriented along (100) plane in the ZnO/graphene composite A symmetric supercapacitor fabricated using this composite exhibited an energy density of 67 mWhcm −3 and power density of 6000 mWcm −3 The composite also showed good long-term cycling performance

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High Density Unaggregated Au Nanoparticles on ZnO

High Density Unaggregated Au Nanoparticles on ZnO Nanorod Arrays Function as Efficient and Recyclable Photocatalysts for Environmental Purification Tung‐Han Yang Department of Materials Science and Engineering National Tsing Hua University Hsinchu 30013 Taiwan Search for more papers by this author Li‐De Huang Department of Chemistry National Tsing

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ZnO Nanoparticles: A Highly Effective and Readily

ZnO Nanoparticles: A Highly Effective and Readily Recyclable Catalyst for the One-Pot Synthesis of 1 8-dioxo-decahydroacridine 3 area was approximately 64 m2/g Also the theoretical particle size was calculated from the surface area and zinc oxide density (5 61 g/cm3) from the equation was 21 1 nm D BET S 6000

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Low Temperature Synthesis of ZnO Nanoparticles

Low Temperature Synthesis of ZnO Nanoparticles 1 Synthesis of ZnO Nanoparticles Using a Low Temperature Vapor Phase Transport Process Curtis Taylor University of Florida Dept of Mechanical and Aerospace Engineering Gainesville Florida Tarek Trad University of Texas-Brownsville Dept of Chemistry Brownsville Texas Kurt Eyink David Look and David

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Size control mechanism of ZnO nanoparticles obtained in

Size control mechanism of ZnO nanoparticles obtained in microwave solvothermal synthesis Jacek Wojnarowicz1 Tadeusz Chudoba1 Iwona Koltsov1 Stanislaw Gierlotka1 Sylwia Dworakowska2 and Witold Lojkowski1 1Institute of High Pressure Physics Polish Academy of Science Sokolowska 29/37 01-142 Warsaw Poland 2Department of Biotechnology and Physical Chemistry

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Green Synthesis of ZnO Nanoparticles its

Introduction Nanoparticles are gaining importance in various fields such as health biomedical science chemicals industries food feed cosmetics environmental drug and gene delivery energy science electronics mechanics and space industries 1-2 Design of processes that reduces or eliminates generation of hazardous substances is the key principle for sustainable chemistry

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Impact of the vapour pressure of water on the equilibrium

ZnO powders and nanoparticles are used as catalysts and have potential applications in gas-sensing and solar energy conversion A fundamental understanding ofthe exposed crystal facets their surface chemistry and stability as function of environmental conditions is essential for rational design and improvement of synthesis and properties

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Hierarchically Assembled Porous ZnO Nanoparticles

We show an effective experimental method to prepare hierarchically porous zinc oxide (ZnO) spherical nanoparticles through a self-assembly pathway using surface-modified colloidal ZnO nanocrystallites as the building blocks and P-123 copolymers as the template in aqueous solution Copolymers are thoroughly removed by Soxhlet extraction with ethanol and calcination at 400 C

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Stress

In the present work ZnO nanostructures were synthesized via wet chemistry method The seeding solution was prepared from zinc nitrate tetrahydrate and hexamethylenetetramine Prior to the heating process the seeding solution was immersed in cold bath (0C) XRD analysis had shown sharp peaks in diffractogram indicating the high crystallinity of ZnO nanostructures

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Microwave solvothermal synthesis and characterization of

The theoretical density of ZnO is 5 606 g/cm 3 The pycnometric density of the obtained reference sample of ZnO NPs without doping amounted to 5 09 g/cm 3 The difference between the nano density and the theoretical density of ZnO can result above all from surface defects the presence of Zn(OH) 2 hydroxides and the non-stoichiometric composition

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Zinc oxide–engineered nanoparticles: Dissolution and

INTRODUCTION Engineered nanoparticles (ENs) defined as particles smaller than 100 nm in at least two dimensions with properties different from the corresponding bulk materials are classified into five groups based on their chemical composition: carbon related materials metal containing products (including metal oxides) semiconductor nanocrystals zero‐valent metals

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Chromium

The influence of chromium doping on the physical properties of ZnO nanoparticles synthesized using a low temperature co-precipitation technique is presented In particular we have studied the correlation between the structural and the magnetic properties as a function of chromium concentrations In order to investigate the magnetic properties vibrating sample magnetometry

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Cytotoxicity of ZnO Nanoparticles Can Be Tailored by

Cytotoxicity of ZnO Nanoparticles Can Be Tailored by Modifying Their Surface Structure: A Green Chemistry Approach for Safer Nanomaterials Alex Punnoose * † Kelsey Dodge † John W Rasmussen ‡ Jordan Chess † Denise Wingett ‡ and Catherine Anders†

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Synthesis and photocatalytic properties of hierarchical

Synthesis and photocatalytic properties of hierarchical metal nanoparticles/ZnO thin films hetero nanostructures assisted by diblock copolymer inverse micellar nanotemplates Yoon Hee Jang Saji Thomas Kochuveedu Min Ah Cha Yu Jin Jang Ji Yong Lee Jieun Lee Juyon Lee Jooyong Kim Du Yeol Ryu Dong Ha Kim

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Influence of EDC/NHS coupling chemistry on stability and

The toxicity of ZnO nanoparticles (NPs) is a growing concern due to its increasing use in several products including sunscreens paints pigments and ceramics for its antibacterial antifungal anti-corrosive and UV filtering properties The toxicity of ZnO NPs is mostly attributed to the Zn 2+ release causing an increase in the intracellular reactive oxygen species (ROS) level

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Encapsulation of nanoparticles into single

We dispersed NDs from the suspension twice onto ZnO nanorods in order to increase the areal density of nanoparticles It can be seen in Figure 2a that some NDs even agglomerate As nanoparticles were heavily loaded onto ZnO nanorods regrowth of ZnO can only occur over the limited bare surface

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Impact of the vapour pressure of water on the equilibrium

ZnO powders and nanoparticles are used as catalysts and have potential applications in gas-sensing and solar energy conversion A fundamental understanding ofthe exposed crystal facets their surface chemistry and stability as function of environmental conditions is essential for rational design and improvement of synthesis and properties

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Item

ZnO powders and nanoparticles are used as catalysts and have potential applications in gas-sensing and solar energy conversion A fundamental understanding of the exposed crystal facets their surface chemistry and stability as function of environmental conditions is essential for rational design and improvement of synthesis and properties

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Silver Nanoparticles: Properties and Applications

Silver Nanoparticle Surface Chemistry When nanoparticles are in solution molecules associate with the nanoparticle surface to establish a double layer of charge that stabilizes the particles and prevents aggregation We offer several silver nanoparticles suspended in a dilute aqueous citrate buffer which weakly associates with the

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Ultrahigh Density Arrays of Toroidal ZnO Nanostructures

A quick protocol for the fabrication of ultrahigh density arrays of toroidal ZnO nanostructures with tailored structures on a substrate surface is presented based on the one‐step spin coating of a common solution composed of inverse micelles of polystyrene‐block‐poly(4‐vinyl pyridine) copolymers (PS‐b‐P4VP) and sol–gel precursors without the need of conventional complex

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Selective Cytotoxic Effect of ZnO Nanoparticles on Glioma

Selective Cytotoxic Effect of ZnO Nanoparticles on Glioma Cells Stella Ostrovsky 1 Gila Kazimirsky2 Aharon Gedanken ( ) and Chaya Brodie2 1 Department of Chemistry and Kanbar Laboratory for Nanomaterials at the Bar-Ilan University Center for Advanced Materials and Nanotechnology Bar-Ilan University Ramat-Gan 52900 Israel

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Polydopamine

Polydopamine-assisted decoration of ZnO nanorods with Ag nanoparticles: an improved photoelectrochemical anode Yuefan Wei ‡a bJunhua Kong ‡b cLiping Yang Lin Ke Hui Ru Tan c Hai Liu b Yizhong Huang b Xiao Wei Sun d Xuehong Lu*b and Hejun Du*a Fig S1 The light spectrum of the light source (HAMAMATSU_LC-5) used in this experiment obtained by using

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Item

ZnO powders and nanoparticles are used as catalysts and have potential applications in gas-sensing and solar energy conversion A fundamental understanding of the exposed crystal facets their surface chemistry and stability as function of environmental conditions is essential for rational design and improvement of synthesis and properties

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Control of the area density of vertically grown ZnO

We develop a novel and simple method for controlling the area density of ZnO nanowires vertically grown on a Si substrate The method is based on blending spherical polystyrene-block-poly(acrylic acid) (PS-b-PAA) micelles with polystyrene-block-poly 4-vinylpyridine (PS-b-P4VP) for the area density control of Au nanoparticles a catalyst of ZnO nanowires chemically

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Nanoparticle

Nanoparticles occur widely in nature and are objects of study in many sciences such as chemistry physics geology and biology Being at the transition between bulk materials and atomic or molecular structures they often exhibit phenomena that are not observed at either scale They are an important component of atmospheric pollution and key ingredients in many

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CONTACT US

The resulting ZnO/polymer nanocomposites were stable in THF with narrow size distributions and varying grafting densities from 0 9 to 2 5 nm-2 With excess amount of polymer ligands individual dispersed ZnO NPs were observed However with a limited amount of ligands NPs clusters were formed as confirmed by TEM and DLS

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Hierarchically Assembled Porous ZnO Nanoparticles

We show an effective experimental method to prepare hierarchically porous zinc oxide (ZnO) spherical nanoparticles through a self-assembly pathway using surface-modified colloidal ZnO nanocrystallites as the building blocks and P-123 copolymers as the template in aqueous solution Copolymers are thoroughly removed by Soxhlet extraction with ethanol and calcination at 400 C

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