Mo-modified ZSM-5 zeolite with intergrowth crystals for high-efficiency catalytic xylene isomerization

2021 ◽  
Author(s):  
Lei Miao ◽  
Zhe Hong ◽  
Guoqing Zhao ◽  
Fangtao Huang ◽  
Zhirong Zhu
Keyword(s):  
Hydrothermal Method ◽  
High Efficiency ◽  
Shape Selectivity ◽  
Reduction Procedure ◽  
Xylene Isomerization

Mo/ZSM-5 catalysts of xylene isomerization were prepared on the intergrowth ZSM-5 support by impregnation-calcination-reduction procedure. ZSM-5 zeolite with intergrowth crystals was prepared for high shape selectivity by the hydrothermal method....

scholarly journals Complete Ring Artifacts Reduction Procedure for Lab-Based X-ray Nano CT Systems

Sensors ◽  
2021 ◽  
Vol 21 (1) ◽  
pp. 238
Author(s):  
Jakub Šalplachta ◽  
Tomáš Zikmund ◽  
Marek Zemek ◽  
Adam Břínek ◽  
Yoshihiro Takeda ◽  
...  
Keyword(s):  
High Efficiency ◽  
Image Inpainting ◽  
Simulated Data ◽  
Complementary Metal Oxide Semiconductor ◽  
Oxide Semiconductor ◽  
Detection Accuracy ◽  
Reduction Procedure ◽  
X Ray ◽  
Artifacts Reduction ◽  
Ct Data

In this article, we introduce a new ring artifacts reduction procedure that combines several ideas from existing methods into one complex and robust approach with a goal to overcome their individual weaknesses and limitations. The procedure differentiates two types of ring artifacts according to their cause and character in computed tomography (CT) data. Each type is then addressed separately in the sinogram domain. The novel iterative schemes based on relative total variations (RTV) were integrated to detect the artifacts. The correction process uses the image inpainting, and the intensity deviations smoothing method. The procedure was implemented in scope of lab-based X-ray nano CT with detection systems based on charge-coupled device (CCD) and scientific complementary metal–oxide–semiconductor (sCMOS) technologies. The procedure was then further tested and optimized on the simulated data and the real CT data of selected samples with different compositions. The performance of the procedure was quantitatively evaluated in terms of the artifacts’ detection accuracy, the comparison with existing methods, and the ability to preserve spatial resolution. The results show a high efficiency of ring removal and the preservation of the original sample’s structure.

Construction of Z-Scheme Bi3TaO7/Zn0.5Cd0.5S composites with high-efficiency for levofloxacin degradation under visible light irradiation

2021 ◽  
Author(s):  
Jingjing Xu ◽  
Yang liu ◽  
xueping li ◽  
Mindong Chen
Keyword(s):  
Visible Light ◽  
Hydrothermal Method ◽  
Visible Light Irradiation ◽  
High Efficiency ◽  
Light Irradiation ◽  
In Situ Growth ◽  
Composite Photocatalysts ◽  
Photocatalytic Activities

Direct Z-scheme Bi3TaO7/Zn0.5Cd0.5S composite photocatalysts were successfully prepared via an in-situ growth hydrothermal method. The photocatalytic activities of composites were investigated by the degradation of levofloxacin under visible light. And...

Controllable design of double metal oxide (NiCo2O4)-modified CdS for efficient photocatalytic hydrogen production

2019 ◽  
Vol 21 (8) ◽  
pp. 4501-4512 ◽  
Author(s):  
Xian Yan ◽  
Zhiliang Jin ◽  
Yupeng Zhang ◽  
Hai Liu ◽  
Xiaoli Ma
Keyword(s):  
High Temperature ◽  
Hydrogen Production ◽  
Metal Oxide ◽  
Hydrothermal Method ◽  
High Efficiency ◽  
Composite Photocatalyst ◽  
Photocatalytic Hydrogen Production ◽  
High Temperature Calcination

In the present study, we have successfully synthesized a kind of high-efficiency NiCo2O4/CdS composite photocatalyst using the hydrothermal method and high-temperature calcination.

Influence of Preparation Methods of TiO2 Nano-Particle on Photodegradation of Methylene Blue

2020 ◽  
Vol 998 ◽  
pp. 84-89
Author(s):  
Jittinat Sirichokthanasarp ◽  
Dang Trung Tri Trinh ◽  
Du Ang Dao Channei ◽  
Kantapat Chansaenpak ◽  
Wilawan Khanitchaidecha ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Hydrothermal Method ◽  
Organic Compounds ◽  
High Efficiency ◽  
Anatase Phase ◽  
Sol Gel ◽  
Nano Particles ◽  
Preparation Methods ◽  
Gel Method ◽  
Sol Gel Method

The dye-pigments and organic compounds are known as significant pollutants in wastewater of textile industrial. Among of treatment technologies, the photocatalysis using TiO2 nano particles has potential on-site process for removing the dye-pigments and organic compounds, due to no hazardous waste and inexpensive. In this work, the TiO2 nanoparticles were synthesized by two different methods of hydrothermal and sol-gel. Nanoparticle of TiO2 synthesized by hydrothermal method contained pure anatase phase as similar as the TiO2 nanoparticles synthesized by sol-gel method. However, the TiO2 synthesized by hydrothermal method provided the higher specific surface area and pore volume rather than the another TiO2. Further, the high efficiency 86% of methylene blue photodegradation was observed during the by using TiO2 synthesized by hydrothermal method as photocatalyst, whereas the efficiency was only 72% for TiO2 synthesized by sol-gel method.

SIMPLE SYNTHESIS OF UNIFORM α-Fe2O3 MICROSPHERES WITH EXCELLENT PHOTOCATALYTIC PERFORMANCE USING POLY (N-VINYL-2-PYRROLIDONE)

NANO ◽  
2013 ◽  
Vol 08 (05) ◽  
pp. 1350053 ◽  
Author(s):  
TING-TING ZHANG ◽  
TING-TING GUO ◽  
ZHI-PING WU ◽  
SI-WEI YANG ◽  
ZHOU-FENG WANG ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Hydrothermal Method ◽  
Room Temperature ◽  
Photocatalytic Performance ◽  
High Efficiency ◽  
Simple Approach ◽  
Simple Synthesis ◽  
Facile Hydrothermal Method

In this paper, a new simple approach has been developed for the preparation of α- Fe 2 O 3 microspheres by a facile hydrothermal method using PVP as a surfactant. Uniform α- Fe 2 O 3 microspheres could be routinely synthesized through solvothermal approach by controlling the PVP/ FeCl 3⋅6 H 2 O ratio. The as-obtained α- Fe 2 O 3 microspheres exhibit high efficiency on the decolorization of RhB aqueous solution in the presence of H 2 O 2 at room temperature.

Optimizing the prepared condition of TiO2 1D/3D network structure films to enhance the efficiency of dye-sensitized solar cells

RSC Advances ◽  
2015 ◽  
Vol 5 (101) ◽  
pp. 82968-82976 ◽  
Author(s):  
Baoyuan Wang ◽  
Jingshu Wan ◽  
Qingyun Liu ◽  
Jun Zhang ◽  
Hao Wang
Keyword(s):  
Solar Cells ◽  
Hydrothermal Method ◽  
Network Structure ◽  
High Efficiency ◽  
Dye Sensitized Solar Cells ◽  
Network Structures ◽  
Dye Sensitized ◽  
3D Network ◽  
Sensitized Solar Cells

TiO2 films with 1D/3D network structures have been prepared via two-step hydrothermal method and applied in DSSCs, an high efficiency of 7.68% was achieved.

Novel Bi2S3/KTa0.75Nb0.25O3 nanocomposite with high efficiency for photocatalytic and piezocatalytic N2 fixation

2021 ◽  
Author(s):  
Lu Chen ◽  
Xiaoquan Dai ◽  
Xiaojing Li ◽  
Junfeng Wang ◽  
Huafeng Chen ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
N2 Fixation ◽  
High Efficiency

A novel Bi2S3/KTa0.75Nb0.25O3 (KTN) heterojunction nanocomposite was prepared through a simple two-step hydrothermal method and primarily applied in the photocatalytic and piezocatalytic N2 fixation. Bi2S3 closely adhered to the surface...

One-step synthesis of ZnS@MoS2 core–shell nanostructure for high efficiency photocatalytic degradation of tetracycline

2020 ◽  
Vol 44 (2) ◽  
pp. 472-477 ◽  
Author(s):  
Kejie Zhang ◽  
Wei Meng ◽  
Shouyu Wang ◽  
Hao Mi ◽  
Lei Sun ◽  
...  
Keyword(s):  
Photocatalytic Degradation ◽  
Hydrothermal Method ◽  
High Efficiency ◽  
Core Shell ◽  
Facile Hydrothermal Method ◽  
One Step

Four kinds of ZnS@MoS2 nanocomposite photocatalysts were successfully prepared via a facile hydrothermal method.

Purification, organophilicity and transparent fluorescent bulk material fabrication derived from hydrophilic carbon dots

RSC Advances ◽  
2015 ◽  
Vol 5 (19) ◽  
pp. 14492-14496 ◽  
Author(s):  
Xiangyang Chen ◽  
Zhijun Zhang ◽  
Jingtai Zhao
Keyword(s):  
Hydrothermal Method ◽  
Self Assembly ◽  
Carbon Dots ◽  
High Efficiency ◽  
Bulk Material ◽  
Assembly Strategy ◽  
Oil Water ◽  
Material Fabrication ◽  
First Time

High-efficiency oil/water interfacial self-assembly strategy has been used for the first time to purify hydrophilic CDs prepared by hydrothermal method.

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