نتایج جستجو برای: sno2 nanoparticles

تعداد نتایج: 109620  

2012
Bei Wang Dawei Su Jinsoo Park Hyojun Ahn Guoxiu Wang

SnO2 nanoparticles were dispersed on graphene nanosheets through a solvothermal approach using ethylene glycol as the solvent. The uniform distribution of SnO2 nanoparticles on graphene nanosheets has been confirmed by scanning electron microscopy and transmission electron microscopy. The particle size of SnO2 was determined to be around 5 nm. The as-synthesized SnO2/graphene nanocomposite exhi...

2008
X Xiang X T Zu S Zhu L M Wang V Shutthanandan P Nachimuthu Y Zhang

Tetragonal Sn nanoparticles of ∼15 nm diameter are produced in Al2O3 by direct Sn implantation at room temperature. After thermal annealing at 1000 ◦C in oxygen, the implantation-induced amorphous region recrystallized and the Sn nanoparticles turned into SnO2 nanoparticles with an average diameter of ∼30 nm as revealed by transmission electron microscopy. While no absorption and photoluminesce...

2018
Wenjin Wan Yuehua Li Xingping Ren Yinping Zhao Fan Gao Heyun Zhao

Two dimensional (2D)SnO2 nanosheets were synthesized by a substrate-free hydrothermal route using sodium stannate and sodium hydroxide in a mixed solvent of absolute ethanol and deionized water at a lower temperature of 130 °C. The characterization results of the morphology, microstructure, and surface properties of the as-prepared products demonstrated that SnO2 nanosheets with a tetragonal ru...

2014
Liping Ding Shulian He Shiding Miao Matthew R. Jorgensen Susanne Leubner Chenglin Yan Stephen G. Hickey Alexander Eychmüller Jinzhang Xu Oliver G. Schmidt

Ultrasmall SnO2 nanocrystals as anode materials for lithium-ion batteries (LIBs) have been synthesized by bubbling an oxidizing gas into hot surfactant solutions containing Sn-oleate complexes. Annealing of the particles in N2 carbonifies the densely packed surface capping ligands resulting in carbon encapsulated SnO2 nanoparticles (SnO2/C). Carbon encapsulation can effectively buffer the volum...

2009
Shaowei Chen

SnO2 nanoparticles were synthesized by a facile electrochemical method based on anodic oxidation of a tin metal sheet. The resulting particles, with an average diameter of about 20nm, were then loaded with varied amounts of HAuCl4, forming SnO2–Au(x) (x=0, 0.095, 0.38, 0.76, 1.9, 3.0, and 3.8 at.%) hybrid nanoparticles after calcination at elevated temperatures (700 ◦C). X-ray diffraction (XRD)...

2012
Azam Anaraki Firooz Ali Reza Mahjoub Abbas Ali Khodadadi

The paper reports the preparation and photocatalytic activity of ZnO/SnO2 and SnO2 nanoparticles. These nanoparticles were synthesized by hydrothermal method. The products were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Their grain sizes are about 50-100 nm. The photocatalytic activities of these materials were investigated for congo red removal from aqueou...

Journal: :Water science and technology : a journal of the International Association on Water Pollution Research 2010
A Esmaielzadeh Kandjani M Farzalipour Tabriz N A Arefian M R Vaezi F Halek S K Sadrnezhaad

In this paper, the photocatalytic decoloration of Acid Red 27 (AR27) has been investigated using ultraviolet (UV) irradiation in presence of SnO2 nanoparticles. SnO2 nanoparticles were synthesized via hydrothermal process. The SnO2 nanoparticles' average crystallite sizes derived from X-ray analyses which were synthesized for 2, 12 and 24 hrs were about 3.73, 5.31 and 7.6 nm, respectively. Brun...

Journal: :Physical chemistry chemical physics : PCCP 2014
N R Srinivasan Sagar Mitra Rajdip Bandyopadhyaya

To utilize the high specific capacity of SnO2 as an anode material in lithium-ion batteries, one has to overcome its poor cycling performance and rate capability, which result from large volume expansion (∼300%) of SnO2 during charging-discharging cycles. Hence, to accommodate the volume change during cycling, SnO2 nanoparticles of 6 nm diameter were synthesized specifically only on the outer s...

2014
Olga Rac Patrycja Suchorska-Woźniak Marta Fiedot Helena Teterycz

According to recent research, the use of nanoparticles as a gas-sensitive material increases the selectivity and sensitivity and shortens the response time of a sensor. However, the synthesis of SnO2 nanoparticles presents many difficulties. The following article presents a simple and inexpensive method for the synthesis of SnO2 nanoparticles. The influence of the surfactant and polymer choice ...

2014
Shuanglei Yang Zhaohui Wu LanPing Huang Banghong Zhou Mei Lei Lingling Sun Qingyong Tian Jun Pan Wei Wu Hongbo Zhang

Understanding the correlation between physicochemical properties and morphology of nanostructures is a prerequisite for widespread applications of nanomaterials in environmental application areas. Herein, we illustrated that the uniform-sized SnO2@C hollow nanoparticles were large-scale synthesized by a facile hydrothermal method. The size of the core-shell hollow nanoparticles was about 56 nm,...

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