Hetero-structural Mass Transfer Channel Boosts Electrocatalytic Oxygen Reactions of Metallic Catalyst

2021 ◽  
pp. 131140
Author(s):  
Jing Li ◽  
Junli Wu ◽  
Ziyi Xie ◽  
Xinlei Zhang ◽  
Songlei Lv ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Transfer Channel ◽  
Metallic Catalyst ◽  
Structural Mass

scholarly journals Effect of mass transfer channels on flexural strength of C/SiC composites fabricated by femtosecond laser assisted CVI method with optimized laser power

2020 ◽  
Author(s):  
Jing Wang ◽  
Liyang Cao ◽  
Yunhai Zhang ◽  
Yongsheng Liu ◽  
Hui Fang ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Chemical Vapor ◽  
Ceramic Matrix Composites ◽  
Strengthening Mechanism ◽  
Chemical Vapor Infiltration ◽  
Matrix Composites ◽  
Transfer Channel ◽  
Dense Band ◽  
Sic Composites ◽  
Transfer Channels

Abstract In this work, femtosecond laser assisted-chemical vapor infiltration (LA-CVI) was employed to produce C/SiC composites with 1, 3, and 5 rows of mass transfer channels. The effects of laser machining power on the quality of produced holes were investigated. The results showed that the increase in power yielded complete hole structures. The as-obtained C/SiC composites with different mass transfer channels displayed higher densification degrees with flexural strengths reaching 546±15 MPa for row mass transfer channel of 3. The strengthening mechanism of the composites was linked to the increase in densification and formation of “dense band” during LA-CVI process. Multiphysics finite element simulations of the dense band and density gradient of LA-CVI C/SiC composites revealed C/SiC composites with improved densification and lower porosity due to the formation of “dense band” during LA-CVI process. In sum, LA-CVI method looks promising for future preparation of ceramic matrix composites with high densities.

3D-interconnected hierarchical porous N-doped carbon supported ruthenium nanoparticles as an efficient catalyst for toluene and quinoline hydrogenation

2016 ◽  
Vol 18 (22) ◽  
pp. 6082-6090 ◽  
Author(s):  
Minghui Tang ◽  
Jiang Deng ◽  
Mingming Li ◽  
Xuefeng Li ◽  
Haoran Li ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Catalyst Support ◽  
Ruthenium Nanoparticles ◽  
Efficient Catalyst ◽  
Hierarchical Porous ◽  
Transfer Channel ◽  
Nitrogen Functionalization

NHPC can serve as an advanced catalyst support, which is attributed to its convenient mass transfer channel and nitrogen functionalization.

scholarly journals Effect of Mass Transfer Channels on Flexural Strength of C/SiC Composites Fabricated by Femtosecond Laser Assisted CVI Method with Optimized Laser Power

2020 ◽  
Author(s):  
Jing Wang ◽  
Liyang Cao ◽  
Yongsheng Liu ◽  
Yunhai Zhang ◽  
Jie Chen ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Chemical Vapor ◽  
Ceramic Matrix Composites ◽  
Strengthening Mechanism ◽  
Chemical Vapor Infiltration ◽  
Matrix Composites ◽  
Transfer Channel ◽  
Dense Band ◽  
Sic Composites ◽  
Transfer Channels

Abstract In this work, femtosecond laser assisted-chemical vapor infiltration (LA-CVI) was employed to produce C/SiC composites with 1, 3, and 5 rows of mass transfer channels. The effects of laser machining power on the quality of produced holes were investigated. The results showed that the increase in power yielded complete hole structures. The as-obtained C/SiC composites with different mass transfer channels displayed higher densification degrees with flexural strengths reaching 546±15 MPa for row mass transfer channel of 3. The strengthening mechanism of the composites was linked to the increase in densification and formation of “dense band” during LA-CVI process. Multiphysics finite element simulations of the dense band and density gradient of LA-CVI C/SiC composites revealed C/SiC composites with improved densification and lower porosity due to the formation of “dense band” during LA-CVI process. In sum, LA-CVI method looks promising for future preparation of ceramic matrix composites with high densities.

Efficient and stable charge transfer channels for photocatalytic water splitting activity of CdS without sacrificial agents

2020 ◽  
Vol 8 (40) ◽  
pp. 20963-20969 ◽  
Author(s):  
Wei Chen ◽  
Guo-Bo Huang ◽  
Hao Song ◽  
Jian Zhang
Keyword(s):  
Charge Transfer ◽  
Water Splitting ◽  
Photocatalytic Water Splitting ◽  
Transfer Channel ◽  
Efficient Charge ◽  
Transfer Channels

An efficient charge transfer channel for improving the photocatalytic water splitting activity and durability of CdS without sacrificial agents.

Sign in / Sign up

Export Citation Format

Share Document