In-situ preparation of three-dimensional Ni@graphene-Cu composites for ultrafast reduction of Cr(VI) at room temperature

2016 ◽  
Vol 75 ◽  
pp. 13-17 ◽  
Author(s):  
Lizhong Liu ◽  
Jinjuan Xue ◽  
Xueying Shan ◽  
Guangyu He ◽  
Xin Wang ◽  
...  
Keyword(s):  
Room Temperature ◽  
Three Dimensional ◽  
In Situ Preparation

Incessant and economical technique for in-situ preparation of metallicnano on/in polyester fabric

2021 ◽  
Vol 64 (2) ◽  
pp. 68-70
Author(s):  
Satyajeet B. Chaudhari ◽  
Bharat H. Patel ◽  
Aadhar A. Mandot
Keyword(s):  
Metal Ion ◽  
Metallic Nanoparticles ◽  
Room Temperature ◽  
Polyester Fabric ◽  
Atmospheric Conditions ◽  
Spherical Nanoparticles ◽  
In Situ Preparation

Composite textiles consisting of metallic nanoparticles dispersed in textiles fabric have been prepared by the reduction of metal ion from its salt at room temperature under normal atmospheric conditions. Morphology and structures have been investigated by SEM. Spherical nanoparticles were found to be homogeneously dispersed in/on the polyester (PET) fiber and the particles were elementally analyzed by the XRF technique.

Crystallographic Features of the A-Type and CE-Type Antiferromagnetic States in the Simple-Perovskite Manganite System Sr1-xNdxMnO3

2011 ◽  
Vol 409 ◽  
pp. 532-537
Author(s):  
Yusuke Onezawa ◽  
Yasuhide Inoue ◽  
Masazumi Arao ◽  
Yasumasa Koyama
Keyword(s):  
Room Temperature ◽  
Three Dimensional ◽  
Electronic System ◽  
Paramagnetic State ◽  
Heating Process ◽  
In Situ Observation ◽  
Perovskite Manganite ◽  
Transmission Electron ◽  
Highly Correlated

The electronic states of Sr1-xNdxMnO3 with the simple perovskite structure are characterized by a three-dimensional highly-correlated electronic system. To understand the detailed features of the A-and CE-type antiferromagnetic states in this system, their crystallographic features for x = 0.47, 0.48, and 0.50 have been investigated mainly by both x-ray powder diffraction and transmission electron microscopy. It was found at room temperature that the crystal structure for x = 0.47 was determined to have the monoclinic C2/m symmetry, while the orthorhombic Imma structure was confirmed for x = 0.48 and 0.50. The in-situ observation for x = 0.47 indicated that, in the heating process from room temperature, the C2/m-to-Imma transition occurred in the paramagnetic state, and that the A-type antiferromagnetic state appeared below about 200 K on cooling. In addition, the cooling from room temperature for x = 0.48 and 0.50 resulted in the direct transitions from the orthorhombic Imma state to the A-and CE-type antiferromagnetic states, respectively. Based on these features, we simply discussed the physical origin of the appearance of the paramagnetic state with the monoclinic symmetry for x = 0.47.

Preparation of Pb-Based Ferroelectric thin films by Ion- and Photo-Assisted Deposition

1991 ◽  
Vol 243 ◽  
Author(s):  
Shigenori Hayashi ◽  
Kenji Iijima ◽  
Takashi Hirao
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Room Temperature ◽  
Preparation Process ◽  
Pzt Thin Films ◽  
In Situ Preparation ◽  
Evaporation Technique ◽  
Film Preparation ◽  
Deposition Techniques

AbstractThin film process for Pb-based perovskite ferroelectrics has been investigated. Synthesis of epitaxial PLZT, PLT and PZT thin films by rfmagnetron sputtering in our laboratory was reviewed. Basic thin film process and applications were discussed. For further investigation, film preparation process was developed by co-deposition and assisted deposition techniques. The substrate temperature required for in-situ preparation of perovskite could be reduced to room temperature by an ion- and photoassisted co-evaporation technique.

scholarly journals I2-SDS-H2O System: A highly Efficient Dual Catalytic Green System for Deprotection of Imines and in Situ Preparation of Bis(indolyl)alkanes from Indoles in Water

2012 ◽  
Vol 2012 ◽  
pp. 1-6
Author(s):  
Parasa Hazarika ◽  
Pallab Pahari ◽  
Manash Jyoti Borah ◽  
Dilip Konwar
Keyword(s):  
Catalytic System ◽  
Room Temperature ◽  
One Pot ◽  
Highly Efficient ◽  
In Situ Preparation ◽  
System A ◽  
Neutral Conditions ◽  
Green System

A novel catalytic system consisting of I2-SDS-H2O has been developed which cleaves 2,3-diaza-1,3-butadiene, 1-aza-1,3-butadienes, oximes and in presence of indoles in the medium uses the corresponding aldehyde products to produce bis(indolyl)alkanes in situ. This one pot simple and mild dual catalytic system works in water at room temperature under neutral conditions.

DIFFERENT GROWTH BEHAVIOR OF Ge, Al AND Sb ON GRAPHITE

2006 ◽  
Vol 13 (02n03) ◽  
pp. 287-296 ◽  
Author(s):  
WENDE XIAO ◽  
ZHIJUN YAN ◽  
SUNIL SINGH KUSHVAHA ◽  
MAOJIE XU ◽  
XUE-SEN WANG
Keyword(s):  
Double Layer ◽  
Room Temperature ◽  
Pyrolytic Graphite ◽  
Three Dimensional ◽  
Growth Behavior ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Defect Sites ◽  
Unique Nature

Growth of Ge , Al and Sb on highly oriented pyrolytic graphite (HOPG) was systematically investigated using in situ scanning tunneling microscopy (STM). At room temperature (RT), three dimensional (3D) clusters of all three elements nucleate and grow at the step edges and defect sites of HOPG. The clusters of Al and Ge form chains, while Sb islands are mostly isolated. With further deposition at RT, Al clusters grow and coarsen into faceted islands with craters on the top (111) facets, whereas ramified single- and double-layer cluster islands are observed for Ge . When deposited or annealed at T ≥ 175° C , Ge forms crystallites but with randomly oriented facets. As spherical Sb islands grow beyond certain size, (111) facets appear on the top. Additionally, crystalline 2D films and 1D nanorods are observed for Sb deposited at RT. At T ≈ 100° C and higher flux, only the 2D and 1D Sb islands are formed. These different growth behaviors reflect the unique nature in which the atoms (molecules), clusters and crystallites of each element interact with HOPG surface and with each other.

scholarly journals Evolution of distance between ω particles in metastable β-Ti alloy determined from in-situ small angle neutron scattering

2020 ◽  
Vol 321 ◽  
pp. 12027
Author(s):  
Pavel Zháňal ◽  
Vasyl Ryukhtin ◽  
Gergely Farkas ◽  
Peter Kadletz ◽  
Uwe Keiderling ◽  
...  
Keyword(s):  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
Room Temperature ◽  
Three Dimensional ◽  
Incident Beam ◽  
Host Lattice ◽  
Ti Alloy ◽  
Small Angle Neutron Scat ◽  
Sans Data

The evolution of distance between ω particles in metastable β Ti- 15Mo alloy (8.1 in at. %) was determined from in-situ small angle neutron scat- tering (SANS). SANS data were recorded during heating of the material from room temperature to 600 ◦C with the heating rate of 1 ◦C/min. The results agree with previously determined ordering of ω particles in a cubic three-dimensional array with the axes along the cubic axes ⟨100⟩β of the host lattice. The distance between particles, which increases with temperature, was investigated in three orientations with the incident beam parallel to [100]β, [110]β and [111]β.

A discussion of the chemical mixing process for in situ preparation of silicon carbide whiskers in silicon nitride powder

1988 ◽  
Vol 3 (3) ◽  
pp. 538-544 ◽  
Author(s):  
Shigehiko Yamada ◽  
Shiushichi Kimura ◽  
Yasuda Eiichi ◽  
Yasuhiro Tanabe ◽  
Yuuichi Asami
Keyword(s):  
Silicon Carbide ◽  
Silicon Nitride ◽  
Room Temperature ◽  
Bending Strength ◽  
In Situ Preparation ◽  
Silicon Carbide Whiskers ◽  
Silicon Nitride Powder ◽  
Physical Mixing ◽  
Chemical Mixing

To produce a homogeneous composite of silicon carbide whiskers in a silicon nitride matrix, the whiskers were formed in situ. The resulting bulk density was higher than that obtained by a physical mixing of the components using a dispersion procedure. Bending strength at room temperature of the in situ formed composite was about the same as that for the physically mixed composite when the small amount of carbon remaining in the in situ formed composite was removed.

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