Mesoporous CeO2 nanoparticles assembled by hollow nanostructures: formation mechanism and enhanced catalytic properties

CrystEngComm ◽  
2014 ◽  
Vol 16 (37) ◽  
pp. 8777-8785 ◽  
Author(s):  
Jingcai Zhang ◽  
Hongxiao Yang ◽  
Shuping Wang ◽  
Wei Liu ◽  
Xiufang Liu ◽  
...  
Keyword(s):  
Formation Mechanism ◽  
Catalytic Properties ◽  
Ceo2 Nanoparticles ◽  
Hollow Nanostructures ◽  
Mesoporous Ceo2

In this paper, novel hierarchically mesoporous CeO2 nanoparticles assembled by hollow nanocones were prepared through a facile solvothermal strategy using Ce(HCOO)3 as the precursor.

One-Pot Self-Templating Synthesis of Pt Hollow Nanostructures and Their Catalytic Properties for CO Oxidation

2014 ◽  
Vol 20 (37) ◽  
pp. 11669-11674 ◽  
Author(s):  
Bu-Seo Choi ◽  
Sun Mi Kim ◽  
Jintaek Gong ◽  
Young Wook Lee ◽  
Shin Wook Kang ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Catalytic Properties ◽  
One Pot ◽  
Hollow Nanostructures ◽  
Templating Synthesis

Assembly, formation mechanism, and enhanced gas-sensing properties of porous and hierarchical SnO2 hollow nanostructures

2010 ◽  
Vol 25 (10) ◽  
pp. 1992-2000 ◽  
Author(s):  
Jinyun Liu ◽  
Fanli Meng ◽  
Yu Zhong ◽  
Jinhuai Liu ◽  
Guangyu Chen ◽  
...  
Keyword(s):  
Formation Mechanism ◽  
Gas Sensing ◽  
Sodium Dodecyl ◽  
Sensing Properties ◽  
Factors Influencing ◽  
Hollow Nanostructures ◽  
Gas Sensing Properties ◽  
Morphology And Structure ◽  
Surfactant Assisted ◽  
Soft Templates

Hierarchical and hollow SnS2 nanostructures as precursors were fabricated via a surfactant-assisted assembly process using sodium dodecyl sulfate as soft templates. The as-prepared SnS2 nanostructures were further oxidized to form porous SnO2 conversion for investigating their gas-sensing properties in drug-precursor detection. On the basis of a series of time- and ratio-dependent reactions, a formation mechanism of the special nanostructures and factors influencing morphology and structure were determined. Gas-sensing measurements revealed that the porous and hierarchical SnO2 hollow nanostructures were sensitive to drug precursors, indicating promising applications in environmental monitoring and public safety investigation. In addition, we found that the assembled SnO2 nanomaterials possessed significantly enhanced gas-sensing properties compared with unassembled SnO2 with a solid interior.

scholarly journals Pt nanohelices with highly ordered horizontal pore channels as enhanced photothermal materials

2015 ◽  
Vol 6 (11) ◽  
pp. 6420-6424 ◽  
Author(s):  
Shuyan Song ◽  
Xiao Wang ◽  
Sheling Li ◽  
Zhuo Wang ◽  
Qi Zhu ◽  
...  
Keyword(s):  
Formation Mechanism ◽  
Growth Process ◽  
Catalytic Properties ◽  
Step Growth

Pt nanohelices with highly ordered horizontal pore channels have been successfully developed. A study of the formation mechanism has shown that a typical two-step growth process occurs. The as-obtained Pt nanohelices exhibit enhanced photothermal and catalytic properties.

CeO2 and Co3O4–CeO2 nanoparticles: effect of the synthesis method on the structure and catalytic properties in COPrOx and methanation reactions

2016 ◽  
Vol 51 (8) ◽  
pp. 3989-4001 ◽  
Author(s):  
Leonardo F. Peiretti ◽  
Nuria Navascués ◽  
Inés S. Tiscornia ◽  
Eduardo E. Miró
Keyword(s):  
Catalytic Properties ◽  
Synthesis Method ◽  
Ceo2 Nanoparticles

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

scholarly journals Laser Cladding In-Situ Ti(C,N) Particles Reinforced Ni-Based Composite Coatings Modified with CeO2 Nanoparticles

Metals ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 601 ◽  
Author(s):  
Tao Chen ◽  
Fan Wu ◽  
Haojun Wang ◽  
Defu Liu
Keyword(s):  
Wear Resistance ◽  
Titanium Alloy ◽  
Laser Cladding ◽  
Formation Mechanism ◽  
Nucleation Rate ◽  
Composite Coatings ◽  
Ceo2 Nanoparticles ◽  
Engineering Applications

To improve the wear resistance of titanium alloy parts used in the engineering applications, in-situ formed Ti(C,N) particles reinforcing Ni-based composite coatings are fabricated on Ti6Al4V alloys by the laser cladding technique using Ni60, C, TiN, and small amounts of CeO2 nanoparticles mixed powders as the pre-placed materials. Firstly, the formation mechanism of Ti(C,N) particles as a reinforced phase in the coating is investigated. Then, the influences of CeO2 nanoparticles on microstructures and wear resistance of the coatings are analyzed. It is indicated that the large Ti(C,N) particles form around TiN particles, and the small Ti(C,N) particles form through independent nucleation. CeO2 nanoparticles play important roles in increasing the nucleation rate and improving the precipitation of Ti(C,N), hence the microstructures and wear resistance of the coatings are apparently improved after adding CeO2 nanoparticles. It is observed that the 1 wt % content of CeO2 additive in the pre-placed powders is the best choice for the wear resistance of the coatings.

scholarly journals Surface basicity mediated rapid and selective adsorptive removal of Congo red over nanocrystalline mesoporous CeO2

2021 ◽  
Author(s):  
Deepak Joshy ◽  
Seena Chacko ◽  
Yahya Ahmed Ismail ◽  
Pradeepan Periyat
Keyword(s):  
Congo Red ◽  
Organic Pollutant ◽  
Ceo2 Nanoparticles ◽  
First Report ◽  
Adsorptive Removal ◽  
Surface Basicity ◽  
Mesoporous Ceo2

Herein we first report surface basicity mediated rapid and selective adsorptive removal of congored from mixture of organic pollutant over nanocrystalline mesoporous CeO2. The surface basicity of mesoporous CeO2 nanoparticles...

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