Surfactant-Assisted Growth of Novel La2(MoO4)3 Dendritic Nanostructures via Facile Hydrothermal Processes

2008 ◽  
Vol 8 (3) ◽  
pp. 1468-1472 ◽  
Author(s):  
Na Zhang ◽  
Wenbo Bu ◽  
Yunpeng Xu ◽  
Danyu Jiang ◽  
Jianlin Shi
Keyword(s):  
Controlled Synthesis ◽  
Photoluminescence Properties ◽  
Nanostructure Fabrication ◽  
Action Mechanism ◽  
Hydrothermal Processes ◽  
Dendritic Nanostructures ◽  
Experimental Parameters ◽  
Hydrothermal Approach ◽  
First Time ◽  
Surfactant Assisted

In this paper, we report for the first time the successful synthesis of novel uniform La2(MoO4)3 dendritic single-crystalline nanostructures via a surfactant-assisted hydrothermal approach. The dendritic nanostructure is composed of trunks with length of several micrometers and plenty of side branches. Both of the trunks and the branches are composed of nanoflakes with thickness of 30–50 nm. The branches are oriented nearly parallel to each other and form an angle of about 45° to the trunk. The polyethylene glycol (PEG) acts as a morphology-directing agent, and by adjusting the experimental parameters, the microstructure of the processed materials could be further controlled in a certain range. The action mechanism of the surfactant has been proposed. This method is a simple and economical route for nanostructure fabrication and might provide a practical reference to the controlled synthesis of other micro-architectures. In addition, the photoluminescence properties of La2(MoO4)3:Eu dendritic nanostructures were studied.

Gluconate controls one-dimensional growth of tellurium nanostructures

2006 ◽  
Vol 21 (2) ◽  
pp. 343-348 ◽  
Author(s):  
Feng Gao ◽  
Qingyi Lu ◽  
Sridhar Komarneni
Keyword(s):  
Sodium Gluconate ◽  
Nanostructure Fabrication ◽  
One Dimensional ◽  
1D Nanostructures ◽  
Experimental Parameters ◽  
Dimensional Growth ◽  
Solution Route ◽  
1D Nanostructure ◽  
Novel Concept ◽  
First Time

In this paper, we show for the first time that by using sodium gluconate-assisted solution route, fine, uniform, and single-crystalline tellurium nanorods and nanowires can be synthesized. Sodium gluconate is a green and safe chemical with strong chelating function, and this property may be useful in the fabrication of nanomaterials, especially one-dimensional (1D) nanomaterials. The sodium gluconate acts as both reducing agent and morphology-directing agent and by adjusting the experimental parameters, the lengths and the diameters of the tellurium nanorods could be further controlled in a certain range. This method is a simple and economical route for 1D nanostructure fabrication and might bring about a novel concept for the synthesis of 1D nanostructures with bio-ligand, sodium gluconate.

Dimensionally-Controlled Hydrothermal Tm3+-doped Oxidic Nanocrystals and Their Photoluminescence Properties

2010 ◽  
Vol 1247 ◽  
Author(s):  
Rocío Calderón-Villajos ◽  
Carlos Zaldo ◽  
Concepción Cascales
Keyword(s):  
Single Crystals ◽  
Fluorescence Lifetimes ◽  
Photoluminescence Properties ◽  
Reaction Conditions ◽  
Hydrothermal Processes ◽  
Bulk Single Crystals ◽  
Template Free ◽  
Reaction Media

AbstractControlled reaction conditions in simple, template-free hydrothermal processes yield Tm-Lu2O3 and Tm-GdVO4 nanocrystals with well-defined specific morphologies and sizes. In both oxide families, nanocrystals prepared at pH 7 reaction media exhibit photoluminescence in ∼1.95 μm similar to bulk single crystals. For the lowest Tm3+ concentration (0.2 % mol) in GdVO4 measured 3H4 and 3F4 fluorescence lifetimes τ are very near to τrad.

scholarly journals Device-independent quantum key distribution with random key basis

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
René Schwonnek ◽  
Koon Tong Goh ◽  
Ignatius W. Primaatmaja ◽  
Ernest Y.-Z. Tan ◽  
Ramona Wolf ◽  
...  
Keyword(s):  
Quantum Key Distribution ◽  
Bell Inequality ◽  
Key Distribution ◽  
Theory And Practice ◽  
Information Theoretic ◽  
Information Theoretic Security ◽  
Experimental Parameters ◽  
Secret Keys ◽  
Simple Variant ◽  
First Time

AbstractDevice-independent quantum key distribution (DIQKD) is the art of using untrusted devices to distribute secret keys in an insecure network. It thus represents the ultimate form of cryptography, offering not only information-theoretic security against channel attacks, but also against attacks exploiting implementation loopholes. In recent years, much progress has been made towards realising the first DIQKD experiments, but current proposals are just out of reach of today’s loophole-free Bell experiments. Here, we significantly narrow the gap between the theory and practice of DIQKD with a simple variant of the original protocol based on the celebrated Clauser-Horne-Shimony-Holt (CHSH) Bell inequality. By using two randomly chosen key generating bases instead of one, we show that our protocol significantly improves over the original DIQKD protocol, enabling positive keys in the high noise regime for the first time. We also compute the finite-key security of the protocol for general attacks, showing that approximately 108–1010 measurement rounds are needed to achieve positive rates using state-of-the-art experimental parameters. Our proposed DIQKD protocol thus represents a highly promising path towards the first realisation of DIQKD in practice.

Synthesis, crystal structure and photoluminescence properties of Eu2+-activated RbCaGd(PO4)2 phosphors

RSC Advances ◽  
2016 ◽  
Vol 6 (14) ◽  
pp. 11211-11217 ◽  
Author(s):  
Xue Chen ◽  
Qidi Wang ◽  
Fengzhu Lv ◽  
Paul K. Chu ◽  
Yihe Zhang
Keyword(s):  
Crystal Structure ◽  
Sol Gel ◽  
Dipole Interaction ◽  
Concentration Quenching ◽  
Photoluminescence Properties ◽  
Gel Method ◽  
Sol Gel Method ◽  
First Time

RbCaGd(PO4)2:Eu2+ was prepared by the Pechini-type sol–gel method. The crystal structure was determined in the first time. The dipole–dipole interaction plays a major role in the mechanism of concentration quenching of Eu2+ in this phosphor.

Hierarchical Ba2(B5O9)Cl·(H2O)0.5 microspheres: surfactant-assisted facile hydrothermal synthesis, Tb3+ doping and photoluminescence properties

CrystEngComm ◽  
2015 ◽  
Vol 17 (41) ◽  
pp. 7856-7865 ◽  
Author(s):  
Xiuping Chen ◽  
Linlin Zhang ◽  
Zhaoqiang Zhang ◽  
Lin Zhu ◽  
Wancheng Zhu
Keyword(s):  
Hydrothermal Synthesis ◽  
Hydrothermal Process ◽  
Photoluminescence Properties ◽  
Host Materials ◽  
Surfactant Assisted

Uniform hierarchical Ba2(B5O9)Cl·(H2O)0.5 microspheres containing nanorod-like sub-units were synthesized via a mild EDTA-2Na assisted hydrothermal process, which were manifested as great potential green-emitting host materials via Tb3+ doping.

Controlled Synthesis of Different Morphologies of SrWO4 Crystals via a Surfactant-Assisted Hydrothermal Precipitation Method

2013 ◽  
Vol 785-786 ◽  
pp. 449-454
Author(s):  
Yan Zhao ◽  
Chun Yan Wu ◽  
Dan Qin ◽  
Xin Lai ◽  
Si Wu ◽  
...  
Keyword(s):  
Ph Value ◽  
Precipitation Method ◽  
Molar Ratio ◽  
X Ray Diffraction ◽  
X Ray ◽  
Experimental Parameters ◽  
Infrared Spectrometer ◽  
Luminescent Spectra ◽  
Hydrothermal Precipitation ◽  
Surfactant Assisted

SrWO4 octahedrons, flowers, bundles, ellipsoids and dendrites had been successfully synthesized via surfactant-assisted method. The products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), photo-luminescent spectra techniques (PL) and fourier transrform infrared spectrometer (FTIR). By through various comparison experiments, it can be found that some related experimental parameters including the reagent concentration, [Sr2+]/[WO42-] molar ratio (R), aging temperature and the pH value had great influences on morphology of the products.

Controlled synthesis of CeVO4 hierarchical hollow microspheres with tunable hollowness and their efficient photocatalytic activity

CrystEngComm ◽  
2018 ◽  
Vol 20 (31) ◽  
pp. 4499-4505 ◽  
Author(s):  
Jinjin Ding ◽  
Xuan Liu ◽  
Miao Wang ◽  
Quan Liu ◽  
Tongming Sun ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Hollow Microspheres ◽  
Controlled Synthesis ◽  
One Step ◽  
Hydrothermal Approach

CeVO4 hierarchical hollow microspheres assembled from nanoscaled building units (nanoparticles, nanocubes and nanoflakes) were synthesized by a one-step hydrothermal approach using l-Asp as the morphology-directing agent.

Size-Controlled Synthesis and Growth Mechanism of Monodisperse Tellurium Nanorods by a Surfactant-Assisted Method

Langmuir ◽  
2004 ◽  
Vol 20 (1) ◽  
pp. 214-218 ◽  
Author(s):  
Zhaoping Liu ◽  
Zhaokang Hu ◽  
Jianbo Liang ◽  
Shu Li ◽  
You Yang ◽  
...  
Keyword(s):  
Growth Mechanism ◽  
Controlled Synthesis ◽  
Size Controlled ◽  
Surfactant Assisted

Controlled synthesis of Co3O4@NiMoO4 core–shell nanorod arrays for efficient water splitting

2018 ◽  
Vol 47 (35) ◽  
pp. 12071-12074 ◽  
Author(s):  
Xiaoqiang Du ◽  
Nai Li ◽  
Xiaoshuang Zhang
Keyword(s):  
Water Splitting ◽  
Nickel Foam ◽  
Core Shell ◽  
Controlled Synthesis ◽  
Nanorod Arrays ◽  
Earth Abundant ◽  
First Time

We reported for the first time the development of Co3O4@NiMoO4 nanorod arrays on nickel foam (Co3O4@NiMoO4/NF) as a robust Earth-abundant electrocatalyst for water splitting.

scholarly journals Nanohybrid scaffolds with luminescent remote control

2018 ◽  
Vol 190 ◽  
pp. 04022
Author(s):  
Anastasia V. Sochilina ◽  
Alexander G. Savelyev ◽  
Natalya V. Sholina ◽  
Denis N. Karimov ◽  
Andrey V. Nechaev ◽  
...  
Keyword(s):  
Remote Control ◽  
Small Animal ◽  
Upconversion Nanoparticles ◽  
Hybrid Nanocomposite ◽  
Direct Laser Writing ◽  
Photoluminescence Properties ◽  
Direct Laser ◽  
Scaffold Structure ◽  
Nanocomposite Scaffolds ◽  
First Time

We report on hybrid nanocomposite scaffolds on the base of cross-linked hyaluronic acid derivative with embedded upconversion nanoparticles (UCNPs). The unique photoluminescence properties of specially designed hydrophilic UCNPs enable visualization of hydrogel using NIR irradiation. Formation of scaffold structure can be produced by means of 3D printing or direct laser writing. For the first time, we present visualization of nanohybrid scaffolds in live small animal aiming to demonstrate new possibilities of their luminescent remote control for tissue engineering.

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