Facile synthesis of large scale mesoporous TiO2microspheres by template-free hydrothermal process: their photocatalysis degradation

2012 ◽  
Author(s):  
Debabrata Sarkar ◽  
Kalyan K. Chattopadhyay
Keyword(s):  
Large Scale ◽  
Hydrothermal Process ◽  
Facile Synthesis ◽  
Template Free

Synthesis of ZnS nanorod arrays by an aqua-solution hydrothermal process on pulse-plating Zn nanocrystallines

2009 ◽  
Vol 24 (9) ◽  
pp. 2821-2827 ◽  
Author(s):  
Wen Yu ◽  
Pengfei Fang ◽  
Shaojie Wang
Keyword(s):  
Large Scale ◽  
Hydrothermal Reaction ◽  
Hydrothermal Process ◽  
Precursor Solution ◽  
Base Plate ◽  
Nanorod Array ◽  
Pulse Plating ◽  
Nanorod Arrays ◽  
Base Property ◽  
Template Free

Large-scale, well-aligned, and oriented ZnS nanorod arrays were fabricated by a novel and original template-free hydrothermal method. The ZnS nanorods were grown on the pulse-plating Zn nanocrystallines along a certain Zn crystalline direction. It was found that reaction factors such as hydrothermal reaction time, zinc source, and sulfide source concentration in the precursor solution, the acid–base property of the precursor solution, and the substrate where ZnS nanorod arrays were grown greatly influence the morphology of the final products. The growth mechanism of ZnS nanorod arrays was also studied. Pulse-plating Zn nanocrystallines were found to be essential for the growth of ZnS nanorod arrays. These ZnS nanorod arrays could be theoretically fabricated on almost any raw base plate as long as Zn nanocrystallines could be pulse-plated on it. Therefore, the as-synthesized ZnS nanorod array might be one of the promising candidates for field-emission or sensitive nanomaterials in the future.

Facile synthesis of Ag@SiO2 core–shell nanowires on large scale

2014 ◽  
Vol 26 (3) ◽  
pp. 1602-1607 ◽  
Author(s):  
Fang Li ◽  
Yu-Ling Zhao ◽  
Wei Dai ◽  
Jing Chen ◽  
Zhengquan Li ◽  
...  
Keyword(s):  
Large Scale ◽  
Core Shell ◽  
Facile Synthesis ◽  
Shell Nanowires

Template free, large scale synthesis of cobalt nanowires using magnetic fields for alignment

2007 ◽  
Vol 18 (16) ◽  
pp. 165606 ◽  
Author(s):  
E K Athanassiou ◽  
P Grossmann ◽  
R N Grass ◽  
W J Stark
Keyword(s):  
Magnetic Fields ◽  
Large Scale ◽  
Cobalt Nanowires ◽  
Template Free ◽  
Large Scale Synthesis

Template-free Hydrothermal Preparation of Mesoporous TiO2Microspheres on a Large Scale

2008 ◽  
Vol 37 (9) ◽  
pp. 938-939 ◽  
Author(s):  
Miao-Miao Ye ◽  
Zhong-Lin Chen ◽  
Wen-Shou Wang ◽  
Liang Zhen ◽  
Ji-Min Shen
Keyword(s):  
Large Scale ◽  
Hydrothermal Preparation ◽  
Template Free

scholarly journals Template-Free Synthesis of Star-Like ZrO2 Nanostructures and Their Application in Photocatalysis

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Xue-Yu Tao ◽  
Jie Ma ◽  
Rui-Lin Hou ◽  
Xiang-Zhu Song ◽  
Lin Guo ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Diffuse Reflectance ◽  
Diffuse Reflectance Spectroscopy ◽  
Hydrothermal Process ◽  
Photocatalytic Property ◽  
Reflectance Spectroscopy ◽  
Raw Material ◽  
Narrow Bandgap ◽  
Excellent Photocatalytic Activity ◽  
Template Free

Star-like nano-ZrO2 has been synthesized using Zr(NO3)4·5H2O as zirconium source by a hydrothermal process without any template and surfactant. The structure of the as-prepared ZrO2 powder was investigated by multiple advanced analytical methods. The results showed that CH3COO− and NO3− had great effects on the formation of star-like ZrO2 nanostructures. The as-prepared ZrO2 had a superior catalytic activity, and the reason for it was analyzed by UV-Vis diffuse reflectance spectroscopy. The effect of raw material ratios on the photocatalytic property of ZrO2 was studied. The synthesized ZrO2 showed a narrow bandgap (3.50–3.85 eV) and an excellent photocatalytic activity, and the degradation of RhB was up to nearly 100% in 30 min with this photocatalyst.

Three-Dimensional MoS2/Graphene Hybrid Aerogel as Free-Standing, High-Performance Electrode for Supercapacitor

NANO ◽  
2020 ◽  
Vol 15 (05) ◽  
pp. 2050062
Author(s):  
Zhaolei Meng ◽  
Xiaojian He ◽  
Song Han ◽  
Zijian Hu
Keyword(s):  
Porous Structure ◽  
Surface Area ◽  
High Performance ◽  
Large Scale ◽  
Low Cost ◽  
Hydrothermal Process ◽  
Three Dimensional ◽  
Rate Capability ◽  
Free Standing ◽  
Hybrid Aerogel

Carbon materials are generally employed as supercapacitor electrodes due to their low- cost, high-chemical stability and environmental friendliness. However, the design of carbon structures with large surface area and controllable porous structure remains a daunt challenge. In this work, a three-dimensional (3D) hybrid aerogel with different contents of MoS2 nanosheets in 3D graphene aerogel (MoS2-GA) was synthesized through a facial hydrothermal process. The influences of MoS2 content on microstructure and subsequently on electrochemical properties of MoS2-GA are systematically investigated and an optimized mass ratio with MoS2: GA of 1:2 is chosen to achieve high mechanical robustness and outstanding electrochemical performance in the hybrid structure. Due to the large specific surface area, porous structure and continuous charge transfer network, such MoS2-GA electrodes exhibit high specific capacitance, good rate capability and excellent cyclic stability, showing great potential in large-scale and low-cost fabrication of high-performance supercapacitors.

scholarly journals Facile Synthesis of Nanoporous Amorphous Silica on Silicon Substrate

2020 ◽  
Vol 2020 ◽  
pp. 1-6
Author(s):  
Luo Hui ◽  
Huang Yongquan ◽  
Wu Lili ◽  
Ge Yanming ◽  
Huang Kaichen ◽  
...  
Keyword(s):  
Amorphous Silica ◽  
Large Scale ◽  
Room Temperature ◽  
Thermal Evaporation ◽  
Metal Particles ◽  
Nanoporous Structure ◽  
Facile Synthesis ◽  
Ultraviolet Emission ◽  
Key Factor ◽  
Nanoporous Structures

Large-scale nanoporous amorphous silica nanostructure is fabricated via a simply etched approach and effective thermal evaporation process. The nanoporous amorphous silica was synthesized by a general and scalable process via etching by metal particles on the silica sheets. In this study, we elucidated how a nanoporous structure was performed and the addition of indium is the key factor that determined the formation of the nanoporous structures. The morphology and the sizes of the porous structure could be tunable by the sizes and the shape of the metal. We discovered a promising optical property in the as-synthesized nanostructures, which have a photoluminescence in an intensive ultraviolet emission as well as a broad visible emission at room temperature.

scholarly journals Fabrication and Superhydrophobic Property of ZnO Micro/Nanocrystals via a Hydrothermal Route

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Chunmei Xiao ◽  
Jing Yan ◽  
Taohai Li
Keyword(s):  
Large Scale ◽  
Hydrothermal Process ◽  
Hydrothermal Route ◽  
One Pot ◽  
Uniform Size ◽  
Water Contact ◽  
X Ray ◽  
Superhydrophobic Property ◽  
Surface Modified ◽  
Scanning Electron

Superhydrophobic ZnO micro/nanocrystals were fabricated on a large scale using a facile one-pot hydrothermal process successfully. The morphologies and chemical composition of as-synthesized ZnO were investigated by the scanning electron microscope (SEM) and X-ray powder diffraction (XRD). The morphology of ZnO products changed from uniform size microrods to flower-like micronanostructures, when the temperature changed from 120°C to 180°C. The morphology of ZnO was strongly affected by the pH. The wettability of the as-synthesized ZnO micro/nanocrystals was studied by measuring water contact angle (CA). The largest static CA for water is 167°, which is closely related to both the ZnO micro/nanostructure and chemical modification. Furthermore, the as-prepared ZnO surface showed superhydrophobicity for some corrosive liquids such as basic and acidic aqueous solutions. The CAs of the surface modified with ZnO prepared at 160°C were over 155° in the range of pH = 1–13.

Large Scale Fabrication of Hollow Palladium Nanospheres by Template-free Approach

2004 ◽  
Vol 33 (3) ◽  
pp. 244-245 ◽  
Author(s):  
Xuanjun Zhang ◽  
Qingrui Zhao ◽  
Yupeng Tian ◽  
Yi Xie
Keyword(s):  
Large Scale ◽  
Template Free
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