Formation Mechanism of Polyaniline Nanotubes by a Simplified Template-Free Method

2008 ◽  
Vol 209 (8) ◽  
pp. 864-871 ◽  
Author(s):  
Hangjun Ding ◽  
Jiaoyan Shen ◽  
Meixiang Wan ◽  
Zhaojia Chen
Keyword(s):  
Formation Mechanism ◽  
Template Free ◽  
Polyaniline Nanotubes

Facile and template-free fabrication of mesoporous 3D nanosphere-like MnxCo3−xO4 as highly effective catalysts for low temperature SCR of NOx with NH3

2018 ◽  
Vol 6 (7) ◽  
pp. 2952-2963 ◽  
Author(s):  
Xiaonan Hu ◽  
Lei Huang ◽  
Jianping Zhang ◽  
Hongrui Li ◽  
Kaiwen Zha ◽  
...  
Keyword(s):  
Low Temperature ◽  
Formation Mechanism ◽  
Operating Temperature ◽  
Synthesis Conditions ◽  
Highly Effective ◽  
Temperature Window ◽  
Template Free ◽  
Low Temperature Scr ◽  
Scr Of Nox

Mesoporous 3D nanosphere-like MnxCo3−xO4 was obtained via a template-free method. The formation mechanism was proposed and the synthesis conditions were carefully investigated. The operating temperature window was 75–325 °C when the NOx conversion was above 80%.

scholarly journals Formation Mechanism of Well-Ordered Densely Packed Nanoparticle Superlattices Deposited from Gas Phase on Template-Free Surfaces

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Chang Liu ◽  
Fei Liu ◽  
Chen Jin ◽  
Sishi Zhang ◽  
Lianhua Zhang ◽  
...  
Keyword(s):  
Gas Phase ◽  
Formation Mechanism ◽  
Substrate Surface ◽  
Deposition Process ◽  
Solution Chemistry ◽  
Two Dimensional ◽  
Self Assembled Monolayer ◽  
Free Surfaces ◽  
Phase Cluster ◽  
Template Free

AbstractSuperlattices of nanoparticles are generally produced based on solution chemistry processes. In this paper, we demonstrate that self-assembled monolayer structures of nanoparticles with superlattice periodicities can also be produced on template-free surfaces in the gas-phase cluster beam deposition process. It is found that the packing of Fe nanoparticles corresponds to an average of two-dimensional densely packed lattice with a hexagonal summary. By controlling the nanoparticle coverage, the two-dimensional densely packed monolayer morphology can spread to the whole substrate surface being deposited. A formation mechanism of the ordered monolayers is proposed. The densely packed morphologies are formed by the balance between the diffusion rate of the nanoparticles and their filling speed on the substrate surface determined by the deposition rate, and the ordering of the nanoparticle arrays is driven by the inter-particle attractive interactions. The model is strongly supported by a series of carefully designed cluster deposition experiments.

Preparation of polyaniline nanotubes by a template-free self-assembly method

2011 ◽  
Vol 65 (13) ◽  
pp. 2015-2018 ◽  
Author(s):  
Zhengzheng Huang ◽  
Enhui Liu ◽  
Haijie Shen ◽  
Xiaoxia Xiang ◽  
Yingying Tian ◽  
...  
Keyword(s):  
Self Assembly ◽  
Assembly Method ◽  
Template Free ◽  
Polyaniline Nanotubes

Template-free hydrothermal synthesis of copper hollow microspheres: microstructure, formation mechanism and compression plasticity

RSC Advances ◽  
2014 ◽  
Vol 4 (15) ◽  
pp. 7545 ◽  
Author(s):  
Ao-Xuan Wang ◽  
De-Qing Chu ◽  
Li-Min Wang ◽  
Bao-Guang Mao ◽  
Hong-Ming Sun ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Formation Mechanism ◽  
Hollow Microspheres ◽  
Microstructure Formation ◽  
Template Free

Template-Free Synthesis of CuInS2 Hollow Nanospheres

2010 ◽  
Vol 663-665 ◽  
pp. 486-489
Author(s):  
Han Mei Hu ◽  
Chong Hai Deng
Keyword(s):  
Ethylene Glycol ◽  
Formation Mechanism ◽  
Solvothermal Reaction ◽  
Hollow Nanospheres ◽  
Template Free ◽  
Glycol Solution ◽  
Small Nanoparticles

CuInS2 hollow nanospheres composed of nanoparticles have been fabricated through a solvothermal reaction in ethylene glycol solution (EG) at 200 °C in the absence of any templates or surfactants. The as-obtained CuInS2 products were characterized by XRD, FESEM andTEM. Results show that the synthesized hollow nanospheres are made up of small nanoparticles with a size of 10 nm and the outer diameters of these spheres change from 200 to 400nm. The possible formation mechanism of CuInS2 hollow nanospheres is simply discussed.

Template-Free Synthesis of Mesoporous β-MnO2 Nanoparticles: Structure, Formation Mechanism, and Catalytic Properties

2020 ◽  
Vol 12 (32) ◽  
pp. 36004-36013
Author(s):  
Yui Yamaguchi ◽  
Ryusei Aono ◽  
Eri Hayashi ◽  
Keigo Kamata ◽  
Michikazu Hara
Keyword(s):  
Structure Formation ◽  
Formation Mechanism ◽  
Catalytic Properties ◽  
Mno2 Nanoparticles ◽  
Template Free

Template-Free Synthesis of Hierarchical m-ZrO2 Nanorods and its Formation Mechanism

2013 ◽  
Vol 662 ◽  
pp. 76-79
Author(s):  
Fei Huang ◽  
Ai Hua Yan ◽  
Zheng Yi Fu ◽  
Fan Zhang ◽  
Ying Huai Qiang ◽  
...  
Keyword(s):  
Formation Mechanism ◽  
Chemical Properties ◽  
Preparation Methods ◽  
Traditional Preparation ◽  
High Production ◽  
Template Free ◽  
Hydrothermal Approach ◽  
High Production Cost ◽  
Physical And Chemical ◽  
And Chemical Properties

Hierarchical ZrO2 nanorods have recently received considerable attention due to their special physical and chemical properties. However, traditional preparation methods are involved in expensive equipment, complicated process and high production cost. Here we report a simple hydrothermal approach to prepare hierarchical ZrO2 nanorod. The results show that as-synthesized products are composed of many nanorods with 80~150 nm in diameter and 15~20 μm in length. After annealing, the final product was involved into hierarchical monoclinic ZrO2 (m-ZrO2) nanorods, namely, the big nanorod was made up of many small nanorods with 20~30 nm in diameter and 300~500 nm in length. The possible formation mechanism was proposed based on a series of chemical reactions and the natural properties of zirconium.

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