Growth mechanism of core–shell PtNi–Ni nanoparticles using in situ transmission electron microscopy

Nanoscale ◽  
2018 ◽  
Vol 10 (24) ◽  
pp. 11281-11286 ◽  
Author(s):  
Liyun Zheng ◽  
Xiaowei Zhang ◽  
Karen C. Bustillo ◽  
Yuan Yao ◽  
Lixin Zhao ◽  
...  
Keyword(s):  
Chemical Properties ◽  
Core Shell ◽  
Physical And Chemical Properties ◽  
Ni Nanoparticles ◽  
Growth Morphology ◽  
Transmission Electron ◽  
Morphology And Structure ◽  
Physical And Chemical ◽  
And Chemical Properties

Controlling the growth, morphology and structure of nanocrystals is fundamental to achieving facet dependent physical and chemical properties.

Electrical, Optical and Ionic Probe inside Transmission Electron Microscope

2013 ◽  
Vol 1525 ◽  
Author(s):  
Xuedong Bai ◽  
Zhi Xu ◽  
Peng Gao ◽  
Kaihui Liu ◽  
Wenlong Wang ◽  
...  
Keyword(s):  
Electrical Transport ◽  
Chemical Properties ◽  
Atomic Scale ◽  
In Situ Tem ◽  
Physical And Chemical Properties ◽  
Transmission Electron ◽  
Tem Method ◽  
Physical And Chemical ◽  
And Chemical Properties

ABSTRACTIn-situ transmission electron microscopy (TEM) method is powerful in a way that it can directly correlate the atomic-scale structure with physical and chemical properties. We will report on the construction and applications of the homemade in-situ TEM electrical and optical holders. Electrical transport of carbon nanotubes and photoconducting response on bending of individual ZnO nanowires have been studied inside TEM. Oxygen vacancy electromigration and its induced resistance switching effect have been probed in CeO2 films.

scholarly journals In-situ Detection Method for Microplastics in Water by Polarized Light Scattering

2021 ◽  
Vol 8 ◽  
Author(s):  
Tong Liu ◽  
Shijun Yu ◽  
Xiaoshan Zhu ◽  
Ran Liao ◽  
Zepeng Zhuo ◽  
...  
Keyword(s):  
Light Scattering ◽  
Scattered Light ◽  
Polarized Light ◽  
Chemical Properties ◽  
Future Application ◽  
Physical And Chemical Properties ◽  
The Individual ◽  
Physical And Chemical ◽  
And Chemical Properties

Microplastics (MPs) have become the widespread contaminants, which raises concerns on their ecological hazards. In-situ detection of MP in water bodies is essential for clear assessment of the ecological risks of MPs. The present study proposes a method based on polarized light scattering which measures the polarization parameters of the scattered light at 120° to detect MP in water. This method takes the advantage of in-situ measurement of the individual particles and the experimental setup in principle is used. By use of the measured polarization parameters equipped by machine learning, the standard polystyrene (PS) spheres, natural water sample, and lab-cultured microalgae are explicitly discriminated, and MP with different physical and chemical properties can be differentiated. It can also characterize the weathering of different MP and identify the specific type from multiple types of MP. This study explores the capability of the proposed method to detect the physical and chemical properties, weathering state and concentration of MP in water which promises the future application in water quality sensing and monitoring.

A soil toposequence on bunya phyllite in Brisbane

Soil Research ◽  
1981 ◽  
Vol 19 (1) ◽  
pp. 1
Author(s):  
AJ Koppi
Keyword(s):  
Chemical Properties ◽  
Parent Material ◽  
Physical And Chemical Properties ◽  
Genetic Unit ◽  
Dioctahedral Mica ◽  
Physical And Chemical ◽  
In Situ Weathering ◽  
And Chemical Properties

A common toposequence on Bunya Phyllite in south-east Queensland was studied in detail at a representative site. Four sample profiles on the slope are described, and some physical and chemical properties are given. The clay minerals, derived from the weathering of the quartz-sericite-chlorite phyllite, comprise dioctahedral mica, dioctahedral vermiculite, an interstratification of these minerals, and kaolin. Properties are related to the slope; and the clay-rich horizon of the middle and lower slopes is considered to be formed mostly by in situ weathering. The classification of the genetic unit given by the slope and parent material is discussed.

scholarly journals Temperature reversible synergistic formation of cerium oxyhydride and Au hydride: a combined XAS and XPDF study

2020 ◽  
Vol 22 (34) ◽  
pp. 18882-18890
Author(s):  
Adam H. Clark ◽  
Nadia Acerbi ◽  
Philip A. Chater ◽  
Shusaku Hayama ◽  
Paul Collier ◽  
...  
Keyword(s):  
Fluorescence Detection ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Au Catalyst ◽  
Total Scattering ◽  
X Ray ◽  
Physical And Chemical ◽  
X Ray Absorption ◽  
And Chemical Properties

In situ studies on the physical and chemical properties of the interaction with hydrogen with a ceria coated alumina supported Au catalyst using fluorescence detection X-ray absorption near edge spectroscopy and X-ray total scattering.

A unique pathway of PtNi nanoparticle formation observed with liquid cell transmission electron microscopy

Nanoscale ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 1414-1418
Author(s):  
Liyun Zheng ◽  
Lixin Zhao ◽  
Songhao Zhao ◽  
Xiaowei Zhang ◽  
Karen C. Bustillo ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Chemical Properties ◽  
Controlled Synthesis ◽  
Physical And Chemical Properties ◽  
Nanoparticle Growth ◽  
Transmission Electron ◽  
Liquid Cell ◽  
Physical And Chemical ◽  
Synthesis Of Nanomaterials ◽  
And Chemical Properties

An understanding of nanoparticle growth is significant for controlled synthesis of nanomaterials with desired physical and chemical properties.

scholarly journals Monitoring Electrochemical Reactions in Situ with Low Field NMR: A Mini-Review

2019 ◽  
Vol 9 (3) ◽  
pp. 498 ◽  
Author(s):  
Bruna Gomes ◽  
Carlos Lobo ◽  
Luiz Colnago
Keyword(s):  
Time Domain ◽  
Chemical Properties ◽  
Electrochemical Reactions ◽  
Electrochemical Studies ◽  
Physical And Chemical Properties ◽  
Low Field ◽  
Low Field Nmr ◽  
Physical And Chemical ◽  
And Chemical Properties

The number of applications of time domain NMR using low-field spectrometers in research and development has been steadily increasing in recent years with applications ranging from quality control of industrial products to the study of physical and chemical properties of a wide array of solid and liquid samples to, most recently, electrochemical studies. In this mini-review we summarize the progress that has been achieved in the coupling between time domain NMR (using low-field spectrometers) and electrochemistry and how the challenges that this coupling poses have been overcome over the years. We also highlight the effect that the static magnetic field of the NMR spectrometer has on the electrochemical systems.

scholarly journals Natural Nanominerals Show Enzyme-Like Activities

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Feng Feng ◽  
Peixia Wang ◽  
Yihe Zhang ◽  
Qi An ◽  
Yue Lin ◽  
...  
Keyword(s):  
Superoxide Dismutase ◽  
Cell Viability ◽  
Earth Science ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Environmental Treatment ◽  
Morphology And Structure ◽  
Good Biocompatibility ◽  
Physical And Chemical ◽  
And Chemical Properties

Natural nanominerals (NNMs) are progressively deposited during earth’s formation. They have shown a broad range of applications from industrial catalysis, environmental treatment, and earth science to pharmaceutics due to their unique nanostructures and characteristics. Here, we first report that NNMs have intrinsic enzyme-like properties and show good biocompatibility. First, we characterized the morphology and structure of the six most representative NNMs including sepiolite, attapulgite, halloysite, montmorillonite, kaolinite, and diatomite by SEM, TEM, and XRD. Then, we quantitatively tested their peroxidase- (POD-), catalase- (CAT-), oxidase- (OXD-), and superoxide dismutase- (SOD-) like activities. The results indicate that different kinds of NNMs show varying degrees of POD-like, CAT-like, and SOD-like activities and minor OXD-like activity. Finally, we tested their cytotoxicity and found that the selected representative NNMs have no or less influence on cell viability, showing high biosafety. At present, NNMs have been widely used, mostly focusing on the physical and chemical properties, such as luminescence and conductivity. Our work promotes the understanding of NNMs, providing a new direction for the better application of NNMs.

Sign in / Sign up

Export Citation Format

Share Document