HYDROTHERMAL SYNTHESIS OF <font>ZnO</font> NANOSTRUCTURES UNDER HIGH PULSED MAGNETIC FIELD

Wang, Zhun; Li, Ying; Jin, Hongming; Zhu, Zhenzhen; Deng, Xiaolong; Li, Wenxian; Zeng, Rong

doi:10.1142/s0217979209063134

Cited by 5 publications

(5 citation statements)

References 14 publications

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“…The experiments done by Wang et al were done in an extremely high‐pulsed magnetic field (4 T), at 180 °C and are not grown on a substrate. Wang et al's experiment is very different from ours and Chiang et al Without of substrate, there is no frame of reference to compare the magnetic field direction and gravity.…”

Section: Discussioncontrasting

confidence: 57%

“…There have been some attempts to explain the effect of a magnetic field on synthesis of different nanomaterials in previous works, with one theory being that the magnetic field promotes growth along the easy magnetic axis in magnetic material like Fe 3 O 4 , or dampening the convection created by Rayleigh–Benard convection or that it creates a magnetic stirring effect . In Chiang et al's setup, their nanorods are grown with the force of gravity (facing downward based on their statement in the Supporting Information) and their magnetic field is applied antiparallel to the direction of the nanorod growth (in the upward direction according to their schematic of the Lorentz force in Figure )…”

Section: Discussionmentioning

confidence: 99%

“…Herein, we challenge this notion in the case of nanomaterial syntheses by implementing both gravity and magnetism to change the size, shape, and order of zinc oxide (ZnO) nanorod sensors during synthesis. Magnetic forces have been previously explored in the synthesis of Fe 3 O 4 and ZnO nanostructures. We investigate simultaneous magnetic and gravitational field effects.…”

Section: Introductionmentioning

confidence: 99%

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Novel Solid‐State Microbial Sensors Based on ZnO Nanorod Arrays

Landry

Burns

Baerlocher

et al. 2018

Adv Funct Materials

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Gravity and magnetism are implemented to change the morphology of zinc oxide nanorod sensors during synthesis. The effects of gravity and magnetism can translate into future application of these nanorods through cost-effective, environmentally friendly, and easy-to-use biosensor technology with the quickest available sensing. The sensors can pave the way toward detection of both bacteria and fungi present on the surface with high sensitivity. This ability to sense microorganisms in a "non-solution-based" environment represents a key step forward in the fields of health and food safety, as well as solid-state nanomaterial biotechnology applications. Hundreds of thousands of people are affected each year by accidental contamination and current protocols are far from preventative. The results of the magnetic field studies when compared with previous results show that the following factors affect the outcome of applying magnetic field during the growth of nanorods on their morphology: the direction of growth with respect to gravity, the method of seeding, and the substrate.

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Section: Discussioncontrasting

confidence: 57%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Novel Solid‐State Microbial Sensors Based on ZnO Nanorod Arrays

Landry

Burns

Baerlocher

et al. 2018

Adv Funct Materials

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“…The wet method The zinc oxide has been made by means of wet method that evolved In today when the technology changes with each new day, the producing process of ZnO has changed into method of wet style (also called chemical method) from method of dry style(also called direct or indirect method). And the biggest difference is that , ZnO crystals produced in the latter method shows hollow granular, it is superior than the needle-like and spherical crystals produced in the dry style on the distribution of reaction of the rubber or and the thermal conductivity [1][2][3], so we call it active ZnO due to its high distributing reaction. This study focuses on the application of active ZnO AZO-808 to the shoes sole rubber.…”

Section: Introductionmentioning

confidence: 99%

Effect of Activated Zinc Oxide on the Property of Sole Rubber

Shan

Zhuang

Zhou

2009

AMR

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The application of activated zinc oxide compared with ordinary zinc oxide in sole rubber was investigated. The experiment showed that activated zinc oxide could improve the microstructure and cross-linking degree of cross-linked rubber, the tensile strength at 100% elongation and at 300% elongation. The ageing resistance increased by 12%. With the amount of activated zinc oxide increased, the modulus at 100% elongation, the modulus at 300% elongation and shore hardness assumed increased, but the elongation at break, tear strength, the ageing resistance presented dropped.

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“…That's mostly focused on modifying the synthesis conditions and difficult to control the microstructure and properties of synthesized materials. To solve this problem, we try to apply magnetic field in synthesis process to find new way [2]. Here we report the pulse magnetic field is applied in the hydrothermal process of ZnO particles' fabrication.…”

mentioning

confidence: 99%

Synthesis of zinc oxide particles by magnetic field process

Wang

et al. 2010

2010 8th International Vacuum Electron Sources Conference and Nanocarbon

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ZnO has the richest family of nanostructures among all materials, both in structures and in properties [ 1]. It has attracted great interest because of its potential high-tech applications. It is well known that synthesis technology is very important for getting desirable microstructure and properties. With the development of nano-technology, ZnO particles with various morphologies have been successfully synthesized. Although various synthetic methods of ZnO nanoparticles, such as growth from solution, hydrothermal growth, and thermal evaporation, have been much researched. That's mostly focused on modifying the synthesis conditions and difficult to control the microstructure and properties of synthesized materials. To solve this problem, we try to apply magnetic field in synthesis process to find new way [2]. Here we report the pulse magnetic field is applied in the hydrothermal process of ZnO particles' fabrication.The essential reaction for synthesis of ZnO particles is as following:Zn(CH3COO)2 +2NH3 . H20 � 2CH3COONH4 +ZnO .J., +H20(1) All chemicals used in this work were analytical grade reagents. Samples were prepared using the following procedures: The mixture of ammonia and zinc acetate solution was stirred for 15 minutes, then transferred into a 25 ml Te flon-lined stainless steel autoclave. The autoclave was heated and maintained at 180°C for 4 hours with or without 4 T pulsed magnetic field, respectively. Then, the autoclave was cooled down naturally to room temperature. The precipitates were filtered off and washed with distilled water and ethanol several times. Finally, the particles were dried at 60°C for 10 hours.X-ray diffraction (XRD) patterns for as-synthesized zinc oxide particles were detected by a D/max-3C X-ray diffract meter equipped with Cu Ku radiation (A = 1.5406 A) to observe the phase purity. The morphology and size of the ZnO particles were further observed by field emission scanning electron microscopy (FE-SEM, JEOL JSM-6700). Fig. 1 is X-ray diffraction patterns for the ZnO particles obtained by hydrothermal method with and without magnetic field, respectively.20 o o N o 40 a) 4T 60 80 2Theta(deg.) 100 20 N o 40 60 80 2Theta(deg.) b ) OT 100 Fig. 1. XRD patterns of as-synthesized ZnO particles obtained under magnetic field of: (a) 4 T, ( b ) 0 T 978-1-4244-6644-3/10/$26.00 ©2010 IEEE 642

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HYDROTHERMAL SYNTHESIS OF ZnO NANOSTRUCTURES UNDER HIGH PULSED MAGNETIC FIELD

Cited by 5 publications

References 14 publications

Novel Solid‐State Microbial Sensors Based on ZnO Nanorod Arrays

Novel Solid‐State Microbial Sensors Based on ZnO Nanorod Arrays

Effect of Activated Zinc Oxide on the Property of Sole Rubber

Synthesis of zinc oxide particles by magnetic field process

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