Ho/TiO2 nanowires heterogeneous catalyst with enhanced photocatalytic properties by hydrothermal synthesis method

2012 ◽  
Vol 179 ◽  
pp. 412-416 ◽  
Author(s):  
Wuyi Zhou ◽  
Yongchang He
Keyword(s):  
Hydrothermal Synthesis ◽  
Heterogeneous Catalyst ◽  
Synthesis Method ◽  
Photocatalytic Properties ◽  
Tio2 Nanowires

Synthesis of Zn-doped In2O3nano sphere architectures as a triethylamine gas sensor and photocatalytic properties

RSC Advances ◽  
2016 ◽  
Vol 6 (92) ◽  
pp. 89847-89854 ◽  
Author(s):  
Xin Sun ◽  
Xiaojing Liu ◽  
Xiaolong Deng ◽  
Xijin Xu
Keyword(s):  
Hydrothermal Synthesis ◽  
Gas Sensor ◽  
Synthesis Method ◽  
Photocatalytic Properties ◽  
One Step

Zn-doped In2O3nano spheres (ZIO NSs) were synthesized by calcining the precipitates prepared through a facile one-step hydrothermal synthesis method.

Citrate/F− assisted phase control synthesis of TiO2 nanostructures and their photocatalytic properties

RSC Advances ◽  
2015 ◽  
Vol 5 (91) ◽  
pp. 74230-74237 ◽  
Author(s):  
Zhiqiang Guo ◽  
Chao Li ◽  
Shuanglong Lu ◽  
Yue Pan ◽  
Hongwei Gu
Keyword(s):  
Photocatalytic Activity ◽  
Hydrothermal Synthesis ◽  
Synthesis Method ◽  
Phase Control ◽  
Photocatalytic Properties ◽  
Control Synthesis ◽  
Tio2 Nanostructures

A novel and controlled sol-hydrothermal synthesis method of nano-TiO2 assisted by citrate/F− has been developed. The photocatalytic activity of the synthesized TiO2 was superior to the commercially available TiO2.

Hydrothermal Synthesis and Photocatalytic Properties of Cu-doped BiVO4 Microsheets

2013 ◽  
Vol 28 (3) ◽  
pp. 287-294 ◽  
Author(s):  
Guo-Cong LIU ◽  
Zhen JING ◽  
Xi-Bing ZHANG ◽  
Xian-Feng LI ◽  
Hong LIU
Keyword(s):  
Hydrothermal Synthesis ◽  
Photocatalytic Properties

scholarly journals Sol-Gel Synthesis of the Double Perovskite Sr2FeMoO6 by Microwave Technique

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 3876
Author(s):  
Jesús Valdés ◽  
Daniel Reséndiz ◽  
Ángeles Cuán ◽  
Rufino Nava ◽  
Bertha Aguilar ◽  
...  
Keyword(s):  
Particle Size ◽  
Hydrothermal Synthesis ◽  
Microwave Radiation ◽  
Structural Characteristics ◽  
Sol Gel ◽  
Synthesis Method ◽  
Double Perovskite ◽  
Synthesis Methods ◽  
X Ray ◽  
Sol Gel Synthesis

The effect of microwave radiation on the hydrothermal synthesis of the double perovskite Sr2FeMoO6 has been studied based on a comparison of the particle size and structural characteristics of products from both methods. A temperature, pressure, and pH condition screening was performed, and the most representative results of these are herein presented and discussed. Radiation of microwaves in the hydrothermal synthesis method led to a decrease in crystallite size, which is an effect from the reaction temperature. The particle size ranged from 378 to 318 nm when pH was 4.5 and pressure was kept under 40 bars. According to X-ray diffraction (XRD) results coupled with the size-strain plot method, the product obtained by both synthesis methods (with and without microwave radiation) have similar crystal purity. The Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray Spectroscopy (EDS) techniques showed that the morphology and the distribution of metal ions are uniform. The Curie temperature obtained by thermogravimetric analysis indicates that, in the presence of microwaves, the value was higher with respect to traditional synthesis from 335 K to 342.5 K. Consequently, microwave radiation enhances the diffusion and nucleation process of ionic precursors during the synthesis, which promotes a uniform heating in the reaction mixture leading to a reduction in the particle size, but keeping good crystallinity of the double perovskite. Precursor phases and the final purity of the Sr2FeMoO6 powder can be controlled via hydrothermal microwave heating on the first stages of the Sol-Gel method.

scholarly journals Microwave-Assisted vs. Conventional Hydrothermal Synthesis of MoS2 Nanosheets: Application towards Hydrogen Evolution Reaction

Crystals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1040 ◽  
Author(s):  
Getachew Solomon ◽  
Raffaello Mazzaro ◽  
Vittorio Morandi ◽  
Isabella Concina ◽  
Alberto Vomiero
Keyword(s):  
Hydrothermal Synthesis ◽  
Hydrothermal Method ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Current Density ◽  
Crystal Morphology ◽  
Synthesis Method ◽  
Synthesis Methods ◽  
Mos2 Nanosheets ◽  
Microwave Assisted

Molybdenum sulfide (MoS2) has emerged as a promising catalyst for hydrogen evolution applications. The synthesis method mainly employed is a conventional hydrothermal method. This method requires a longer time compared to other methods such as microwave synthesis methods. There is a lack of comparison of the two synthesis methods in terms of crystal morphology and its electrochemical activities. In this work, MoS2 nanosheets are synthesized using both hydrothermal (HT-MoS2) and advanced microwave methods (MW-MoS2), their crystal morphology, and catalytical efficiency towards hydrogen evolution reaction (HER) were compared. MoS2 nanosheet is obtained using microwave-assisted synthesis in a very short time (30 min) compared to the 24 h hydrothermal synthesis method. Both methods produce thin and aggregated nanosheets. However, the nanosheets synthesized by the microwave method have a less crumpled structure and smoother edges compared to the hydrothermal method. The as-prepared nanosheets are tested and used as a catalyst for hydrogen evolution results in nearly similar electrocatalytic performance. Experimental results showed that: HT-MoS2 displays a current density of 10 mA/cm2 at overpotential (−280 mV) compared to MW-MoS2 which requires −320 mV to produce a similar current density, suggesting that the HT-MoS2 more active towards hydrogen evolutions reaction.

Enhancement of blue emission in β-NaYbF4:Tm3+/Nd3+ nanophosphors synthesized by nonclosed hydrothermal synthesis method

2010 ◽  
Vol 101 (3) ◽  
pp. 623-629 ◽  
Author(s):  
X. F. Wang ◽  
X. H. Yan ◽  
C. X. Kan ◽  
K. L. Ma ◽  
Y. Xiao ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Synthesis Method ◽  
Blue Emission

Hydrothermal synthesis of novel photosensitive gold and silver bimetallic nanoclusters protected by adenosine monophosphate (AMP)

2017 ◽  
Vol 5 (38) ◽  
pp. 9979-9985 ◽  
Author(s):  
Jiao Liu ◽  
Xin-Xin Yuan ◽  
Hong-Wei Li ◽  
Yuqing Wu
Keyword(s):  
Hydrothermal Synthesis ◽  
Quantum Yield ◽  
Synthesis Method ◽  
Adenosine Monophosphate ◽  
High Quantum Yield ◽  
High Quantum ◽  
Luminescence Emission ◽  
Bimetallic Nanoclusters ◽  
Strong Luminescence

AMP-capped gold and silver bimetal nanoclusters, Au–AgNCs@AMP, showing strong luminescence emission with a high quantum yield (QY = 8.46%) and novel photosensitivity, have been prepared using the hydrothermal synthesis method.

Porous TiO2 nanowires derived from nanotubes: Synthesis, characterzation and their enhanced photocatalytic properties

2013 ◽  
Vol 181 ◽  
pp. 146-153 ◽  
Author(s):  
Zhen Jin ◽  
Fan-Li Meng ◽  
Yong Jia ◽  
Tao Luo ◽  
Jin-Yun Liu ◽  
...  
Keyword(s):  
Photocatalytic Properties ◽  
Tio2 Nanowires ◽  
Porous Tio2
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