Synthesis and catalytic activity studies of α-MnO2 nanorodes, rutile TiO2 and its composite prepared by hydrothermal method

2020 ◽  
Author(s):  
Rashed Taleb Rasheed ◽  
Hadeel S. Mansoor ◽  
Rasha R. Al-Shaikhly ◽  
Thamer Adnan Abdullah ◽  
Ali Dawood Salman ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Hydrothermal Method ◽  
Rutile Tio2

Rutile TiO2 single crystals delivering enhanced photocatalytic oxygen evolution performance

Nanoscale ◽  
2021 ◽  
Author(s):  
Bing Fu ◽  
Zhijiao Wu ◽  
Kai Guo ◽  
Lingyu Piao
Keyword(s):  
Catalytic Activity ◽  
Single Crystals ◽  
Oxygen Evolution ◽  
Water Oxidation ◽  
Charge Separation ◽  
High Surface ◽  
Rutile Tio2 ◽  
Highly Efficient ◽  
Photogenerated Charge Separation

Owing to their scientific and technological importance, the development of highly efficient photocatalytic water oxidation systems with rapid photogenerated charge separation and high surface catalytic activity has highly desirable for...

Control synthesis of rutile TiO2 microspheres, nanoflowers, nanotrees and nanobelts via acid-hydrothermal method and their optical properties

CrystEngComm ◽  
2011 ◽  
Vol 13 (14) ◽  
pp. 4557 ◽  
Author(s):  
Weijia Zhou ◽  
Xiaoyan Liu ◽  
Jingjie Cui ◽  
Duo Liu ◽  
Jing Li ◽  
...  
Keyword(s):  
Optical Properties ◽  
Hydrothermal Method ◽  
Control Synthesis ◽  
Rutile Tio2 ◽  
Tio2 Microspheres

Hydrothermal synthesis of octahedra-based layered niobium oxide and its catalytic activity as a solid acid

2014 ◽  
Vol 4 (12) ◽  
pp. 4250-4257 ◽  
Author(s):  
Toru Murayama ◽  
Junli Chen ◽  
Jun Hirata ◽  
Keeko Matsumoto ◽  
Wataru Ueda
Keyword(s):  
Catalytic Activity ◽  
Hydrothermal Synthesis ◽  
Hydrothermal Method ◽  
Layered Structure ◽  
Niobium Oxide ◽  
Solid Acid ◽  
Structure Type ◽  
Niobium Oxides

Layered-structure-type niobium oxides were synthesized by the hydrothermal method by using ammonium niobium oxalate as a precursor.

scholarly journals One-Step Acidic Hydrothermal Preparation of Dendritic Rutile TiO2 Nanorods for Photocatalytic Performance

Nanomaterials ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 683 ◽  
Author(s):  
Cheng Gong ◽  
Jun Du ◽  
Xiuyun Li ◽  
Zhenjie Yu ◽  
Jiansong Ma ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Contact Angle ◽  
Hydrothermal Method ◽  
Photocatalytic Performance ◽  
Three Dimensional ◽  
Tio2 Nanorods ◽  
Foil Surface ◽  
Rutile Tio2 ◽  
X Ray ◽  
One Step

Three-dimensional and dendritic rutile TiO2 nanorods were successfully fabricated on a Ti foil surface using a one-step acidic hydrothermal method. The TiO2 nanorods were characterized using X-ray diffraction (XRD), energy dispersive X-ray spectrometry (EDX), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and optical contact angle testing. The results showed that the nanorods with diameters of 100–500 nm and lengths of 100 nm to 1 μm were obtained on the Ti foil surface. The length and density of the TiO2 nanorods were perfect at the conditions of HCl concentration 0.5 mol/L, temperature 220 °C, and reaction time 12 h. The TiO2 nanorods formed parallel to the consumption of Ti and grew along the (110) direction having a tetragonal rutile crystal. The morphology of the nanorods possessed a three-dimensional structure. The contact angle of the nanorods was only 13 ± 3.1°. Meanwhile, the photocatalytic activities of the TiO2 nanorods were carried out using ultraviolet fluorescence spectrophotometry for the methyl orange detection, and the degradation was found to be about 71.00% ± 2.43%. Thus, TiO2 nanorods can be developed by a one-step acidic hydrothermal method using Ti foil simultaneously as the substrate with a TiO2 source; the TiO2 nanorods exhibited photocatalytic performance while being environment-friendly.

Photo Catalytic Properties of Fe-Modified and Magnetic Nanotitanium Prepared by Hydrothermal Method

2013 ◽  
Vol 743-744 ◽  
pp. 843-848
Author(s):  
Ya Ping Zhang ◽  
Qian Qian Zhi ◽  
Lian Qing Yu ◽  
Kai Tuo Dong ◽  
Ri Shan Liu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Hydrothermal Method ◽  
Degradation Rate ◽  
Crystal Morphology ◽  
Separation Efficiency ◽  
Uv Light ◽  
Mercury Lamp ◽  
Photo Catalytic Activity ◽  
Reaction Solution ◽  
Fe Addition

In order to improve the separation efficiency and the circular utilization ratio of the catalyst, the Fe-doped nanotitanium and nanotitanium supported on Fe2O3 carrier was prepared by hydrothermal method. The tetra-butyl titanate and ethanol were used as starting materials to prepare nanotitanium. The results of Fe-doped nanotitanium showed that the doping of iron changed the nanotitanium crystal and crystal morphology. No matter UV-light or mercury lamp 577 nm irradiation, the samples with 0.5 mM Fe addition showed the highest photo catalytic activity, with degradation rate of methyl blue above 95%. The structure, photo catalytic activity and magnetic properties analysis showed that the magnetic nanotitanium met the purpose of separation between the catalyst and reaction solution. The photo catalytic activity of nanotitanium supported on Fe2O3 carrier has respond to visible light. With mercury lamp 577 nm as irradiation source, degradation rate of methylene blue light could reach 63.40%.

Efficient visible-light-induced hydrogen evolution from water splitting using a nanocrystalline nickel phosphide catalyst

RSC Advances ◽  
2016 ◽  
Vol 6 (29) ◽  
pp. 24361-24365 ◽  
Author(s):  
Weiming Wu ◽  
Xianyang Yue ◽  
Xiao-Yuan Wu ◽  
Can-Zhong Lu
Keyword(s):  
Catalytic Activity ◽  
Visible Light ◽  
Hydrothermal Method ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
Good Stability ◽  
High Catalytic Activity ◽  
Nickel Phosphide

Nanocrystalline Ni12P5 was synthesized by a simple hydrothermal method. It showed high catalytic activity (10 760 μmol h−1 g−1, TOF = 9.3 h−1) and good stability (15 h) for the hydrogen evolution from water under visible light irradiation.

scholarly journals Obtenção de catalisador nanoestruturado utilizando óxido de ferro suportado em resíduo de cerâmica vermelha

2019 ◽  
Vol 40 ◽  
pp. 94
Author(s):  
Fabiele Schaefer Rodrigues ◽  
Marcela Trojahn Nunes ◽  
Jocenir Boita
Keyword(s):  
Catalytic Activity ◽  
Iron Oxide ◽  
Hydrothermal Method ◽  
Scientific Community ◽  
National Laboratory ◽  
High Catalytic Activity ◽  
Nanostructured Catalyst ◽  
Synchrotron Light ◽  
Object Of Study ◽  
Technological Interest

The use of nanoparticles in the field of catalysis has been the object of study by the scientific community, due to the high catalytic activity that the nanoparticles have in front of some reactions of technological interest. The objective of this work is to obtain a nanostructured catalyst using iron oxide supported on red ceramic residue (RCV), through nanostructures synthesized by the hydrothermal method, measured through the absorption of lightning in the XANES region through the National Laboratory of Synchrotron Light LNLS).

Surfactant-free pH-assisted facile engineering of hierarchical rutile TiO2 nanostructures by a single step hydrothermal method for water splitting application

CrystEngComm ◽  
2020 ◽  
Vol 22 (14) ◽  
pp. 2462-2471
Author(s):  
V. V. Burungale ◽  
Hyojung Bae ◽  
A. S. Kamble ◽  
J.-H. Kim ◽  
P. S. Patil ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Water Splitting ◽  
Single Step ◽  
Rutile Tio2 ◽  
Tio2 Nanostructures

The structural appearance of TiO2 nanostructures can be easily engineered by means of pH of the solvent solution.

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