Pt-porous ZnO nanoribbon hybrid materials with enhanced catalytic performances

CrystEngComm ◽  
2015 ◽  
Vol 17 (8) ◽  
pp. 1765-1768 ◽  
Author(s):  
Zhiqiang Cheng ◽  
Mingyue Yu ◽  
Guixia Yang ◽  
Lijuan Kang
Keyword(s):  
Photocatalytic Degradation ◽  
Co Oxidation ◽  
Hybrid Materials ◽  
Catalytic Properties ◽  
Seeded Growth ◽  
Hybrid Nanomaterial ◽  
Growth Method ◽  
Catalytic Applications ◽  
Catalytic Performances

With the help of bio-molecule l-lysine, a seeded growth method has been developed and Pt–ZnO porous nanoribbons have been successfully obtained. For the catalytic applications of CO oxidation and the photocatalytic degradation of MO, the hybrid nanomaterial exhibits remarkably enhanced catalytic properties.

Rapid, Non-Toxic Synthesis of Beta Zeolites

2018 ◽  
Author(s):  
Felix Hemmann ◽  
Jonathan Hackebeil ◽  
Andreas Lißner ◽  
Florian Mertens
Keyword(s):  
Hydrofluoric Acid ◽  
Molecular Sieves ◽  
Toxic Chemicals ◽  
Lewis Acidity ◽  
Beta Zeolite ◽  
Seeded Growth ◽  
Related Research ◽  
Beta Zeolites ◽  
Growth Method ◽  
Fast Synthesis

Molecular sieves with beta zeolite topology are promising catalysts for various reactions as they exhibits extraordinary Lewis acidity. However, their industrial application and related research in academica is hindered because their synthesis is time consuming and typically involves toxic chemicals as hydrofluoric acid. Therefore, tetraethylammonium fluorid was tested as a non-toxic fluotide source for the synthesis of beta zeolites. In combination with the previously reported nano-seeded growth method, a fast synthesis of beta zeolites only involving non-toxic chemicals was possible. Synthesized zeolites show comparable selectivity in the Bayer-Villinger oxidation as conventional zeolites synthesized with hydrofluoric acid.<br>

Titania-loaded cellulose-based functional hybrid nanomaterial for photocatalytic degradation of toxic aromatic dye in water

2020 ◽  
Vol 33 ◽  
pp. 101062 ◽  
Author(s):  
Mohammad Neaz Morshed ◽  
Shamim Al Azad ◽  
Hridam Deb ◽  
Bayazid Bustami Shaun ◽  
Xiao Lin Shen
Keyword(s):  
Photocatalytic Degradation ◽  
Hybrid Nanomaterial

Synthesis of mesoporous CeO2-MnOx binary oxides and their catalytic performances for CO oxidation

2014 ◽  
Vol 32 (2) ◽  
pp. 146-152 ◽  
Author(s):  
Wangcheng ZHAN ◽  
Xinye ZHANG ◽  
Yanglong GUO ◽  
Li WANG ◽  
Yun GUO ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Binary Oxides ◽  
Mesoporous Ceo2 ◽  
Catalytic Performances

Large-scale synthesis of Au–WO3 porous hollow spheres and their photocatalytic properties

2017 ◽  
Vol 7 (17) ◽  
pp. 3702-3706 ◽  
Author(s):  
Chenying He ◽  
Xia Li ◽  
Yahui Li ◽  
Junfang Li ◽  
Guangcheng Xi
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Organic Pollutants ◽  
Hybrid Materials ◽  
Large Scale ◽  
Hollow Spheres ◽  
Photocatalytic Properties ◽  
Excellent Activity ◽  
Visible Light Photocatalytic

Uniform Au–WO3 porous hollow spheres have been synthesized on a large-scale by a general in situ reaction. The hybrid materials exhibit excellent activity for visible-light photocatalytic degradation of organic pollutants.

An electron trapping protocol of FePW12O40 microflowers with dual catalytic properties: visible light photodegradation of amphetamine and electrocatalytic oxygen evolution

2019 ◽  
Vol 55 (33) ◽  
pp. 4825-4828
Author(s):  
Sibsankar Rahut ◽  
Soumya Shankar Basu ◽  
Jayanta Kumar Basu
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Oxygen Evolution ◽  
Catalytic Properties ◽  
Electron Trapping

We have demonstrated the development of a novel polyxometalate compound, FePW12O40, for photocatalytic degradation of amphetamine and electrocatalytic oxygen evolution.

Sol‐Gel Preparation of Perovskite Oxides Using Ethylene Glycol and Alcohol Mixture as Complexant and Its Catalytic Performances for CO Oxidation

2018 ◽  
Vol 3 (43) ◽  
pp. 12250-12257 ◽  
Author(s):  
Shan Wang ◽  
Yibo Zhang ◽  
Junjiang Zhu ◽  
Duihai Tang ◽  
Zhen Zhao ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Co Oxidation ◽  
Sol Gel ◽  
Perovskite Oxides ◽  
Alcohol Mixture ◽  
Gel Preparation ◽  
Catalytic Performances

Identification of Grain Boundary Segregation Mechanisms during Silicon Bi-Crystal Solidification

2014 ◽  
Vol 790-791 ◽  
pp. 329-334 ◽  
Author(s):  
Antoine Autruffe ◽  
Jesper Friis ◽  
Lasse Vines ◽  
Lars Arnberg ◽  
Marisa di Sabatino
Keyword(s):  
Grain Boundary ◽  
Secondary Ion Mass Spectrometry ◽  
Boundary Segregation ◽  
Seeded Growth ◽  
Ab Initio Simulation ◽  
State Diffusion ◽  
Growth Method ◽  
The Impact ◽  
Secondary Ion ◽  
Simulation Package

Small angle grain boundaries have been grown in a small Bridgman furnace, using seeded growth method, at three different pulling rates i.e. 3 μm/s, 13 μm/s and 40 μm/s. In order to assess segregation mechanisms of impurities towards the central grain boundary, melt has been polluted by 50ppma of either copper or indium. Secondary ion mass spectrometry (SIMS) local analyses have been performed to investigate the impact of solid state diffusion and limited rejection of solute at the grain boundary for each growth rate. The results are discussed in connection with an atomistic model built on Vienna Ab-initio Simulation Package (VASP).

scholarly journals Surface and Catalytic Properties of γ-Irradiated Cr2O3/Al2O3 Solids

1997 ◽  
Vol 15 (6) ◽  
pp. 465-476 ◽  
Author(s):  
G.A. El-Shobaky ◽  
A.M. Ghozza ◽  
G.M. Mohamed
Keyword(s):  
Catalytic Activity ◽  
Co Oxidation ◽  
Surface Area ◽  
Pore Volume ◽  
Active Sites ◽  
Catalytic Properties ◽  
Total Pore Volume ◽  
Bet Surface Area ◽  
Two Samples ◽  
Γ Rays

Two samples of Cr2O3/Al2O3 were prepared by mixing a known mass of finely powdered Al(OH)3 with a calculated amount of CrO3 solid followed by drying at 120°C and calcination at 400°C. The amounts of chromium oxide employed were 5.66 and 20 mol% Cr2O3, respectively. The calcined solid specimens were then treated with different doses of γ-rays (20–160 Mrad). The surface and catalytic properties of the different irradiated solids were investigated using nitrogen adsorption at −196°C and the catalysis of CO oxidation by O2 at 300–400°C. The results revealed that γ-rays brought about a slight decrease in the BET surface area, SBET (15%), and in the total pore volume, Vp (20%), of the adsorbent containing 5.66 mol% Cr2O3. The same treatment increased the total pore volume, Vp (36%), and the mean pore radius, r̄ (43%), of the other adsorbent sample without changing its BET surface area. The catalytic activities of both catalyst samples were found to increase as a function of dose, reaching a maximum value at 80–160 Mrad and 40 Mrad for the solids containing 5.66 and 20 mol% Cr2O3, respectively. The maximum increase in the catalytic activity measured at 300°C was 59% and 100% for the first and second catalyst samples, respectively. The induced effect of γ-irradiation on the catalytic activity was an increase in the concentration of catalytically active sites taking part in chemisorption and in the catalysis of CO oxidation by O2 without changing their energetic nature. This was achieved by a progressive removal of surface hydroxy groups during the irradiation process.

scholarly journals On the Preparation of TiO2−Sepiolite Hybrid Materials for the Photocatalytic Degradation of TCE: Influence of TiO2Distribution in the Mineralization

2008 ◽  
Vol 42 (16) ◽  
pp. 5892-5896 ◽  
Author(s):  
Silvia Suárez ◽  
Juan M. Coronado ◽  
Raquel Portela ◽  
Juan Carlos Martín ◽  
Malcolm Yates ◽  
...  
Keyword(s):  
Photocatalytic Degradation ◽  
Hybrid Materials
Sign in / Sign up

Export Citation Format

Share Document