Ternary nickel–iron sulfide microflowers as a robust electrocatalyst for bifunctional water splitting

2017 ◽  
Vol 5 (30) ◽  
pp. 15838-15844 ◽  
Author(s):  
Jiahao Yu ◽  
Gongzhen Cheng ◽  
Wei Luo
Keyword(s):  
Porous Structure ◽  
Water Splitting ◽  
Iron Sulfide ◽  
Ni Foam ◽  
Step Method ◽  
Hierarchically Porous ◽  
Nickel Iron ◽  
Hierarchically Porous Structure

3D ternary nickel iron sulfide microflowers with a hierarchically porous structure have been directly grown on Ni foam via a convenient two-step method for efficient bifunctional water splitting.

scholarly journals Highly efficient evaporative cooling by all-day water evaporation using hierarchically porous biomass

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jihun Choi ◽  
Hansol Lee ◽  
Bokyeong Sohn ◽  
Minjae Song ◽  
Sangmin Jeon
Keyword(s):  
Porous Structure ◽  
Fiber Length ◽  
Evaporation Rate ◽  
Water Evaporation ◽  
Thickness Direction ◽  
Hierarchically Porous ◽  
Hierarchically Porous Structure ◽  
Length Direction ◽  
Luffa Sponge ◽  
Fiber Thickness

AbstractWe developed a 3D solar steam generator with the highest evaporation rate reported so far using a carbonized luffa sponge (CLS). The luffa sponge consisted of entangled fibers with a hierarchically porous structure; macropores between fibers, micro-sized pores in the fiber-thickness direction, and microchannels in the fiber-length direction. This structure remained after carbonization and played an important role in water transport. When the CLS was placed in the water, the microchannels in the fiber-length direction transported water to the top surface of the CLS by capillary action, and the micro-sized pores in the fiber-thickness direction delivered water to the entire fiber surface. The water evaporation rate under 1-sun illumination was 3.7 kg/m2/h, which increased to 14.5 kg/m2/h under 2 m/s wind that corresponded to the highest evaporation rate ever reported under the same condition. The high evaporation performance of the CLS was attributed to its hierarchically porous structure. In addition, it was found that the air temperature dropped by 3.6 °C when the wind passed through the CLS because of the absorption of the latent heat of vaporization. The heat absorbed by the CLS during water evaporation was calculated to be 9.7 kW/m2 under 1-sun illumination and 2 m/s wind, which was 10 times higher than the solar energy irradiated on the same area (1 kW/m2).

A bio-inspired, hierarchically porous structure with a decoupled fluidic transportation and evaporative pathway toward high-performance evaporation

2021 ◽  
Author(s):  
Jianguo Li ◽  
Chaoji Chen ◽  
Wentao Gan ◽  
Zhihan Li ◽  
Hua Xie ◽  
...  
Keyword(s):  
Porous Structure ◽  
High Performance ◽  
Evaporation Rate ◽  
High Rate ◽  
Hierarchically Porous ◽  
Hierarchically Porous Structure ◽  
High Evaporation Rate

High-rate evaporation is achieved by a delignified reed, featuring hierarchically, 3D porous structure with microchannels surrounding macrochannels, which decouples the transport and evaporation of fluids, contributing to a high evaporation rate.

scholarly journals Winter-jujube-derived carbon with self-doped heteroatoms and a hierarchically porous structure for high-performance supercapacitors

RSC Advances ◽  
2017 ◽  
Vol 7 (69) ◽  
pp. 43356-43365 ◽  
Author(s):  
Yuanyuan Li ◽  
Kaiwen Zheng ◽  
Sayyed Asim Ali Shah ◽  
Yizhou Huang ◽  
Yazhou Tian ◽  
...  
Keyword(s):  
Porous Structure ◽  
High Performance ◽  
Porous Structures ◽  
Hierarchically Porous ◽  
Hierarchically Porous Structure

The synthesized JC samples possessed abundant self-doped heteroatoms and hierarchically porous structures (the co-existence of micro-, meso-, and macropores).

scholarly journals Hierarchically porous SiO2/C hollow microspheres: a highly efficient adsorbent for Congo Red removal

RSC Advances ◽  
2018 ◽  
Vol 8 (35) ◽  
pp. 19852-19860 ◽  
Author(s):  
Jie Wang ◽  
Longya Xiao ◽  
Shuai Wen ◽  
Nuo Chen ◽  
Zhiyin Dai ◽  
...  
Keyword(s):  
Porous Structure ◽  
Surface Area ◽  
Congo Red ◽  
Hollow Microspheres ◽  
Hierarchically Porous ◽  
Hierarchically Porous Structure ◽  
Highly Efficient ◽  
Porous Sio2 ◽  
Adsorption Amount ◽  
Efficient Adsorbent

Hierarchically porous SiO2/C hollow microspheres (HPSCHMs) were synthesized. Its surface area is up to 1154 m2g–1. Hierarchically porous structure facilitates diffusion of adsorbate. Its maximum adsorption amount for Congo Red is up to 2512 mg g–1.

Three-dimensional hollow reduced graphene oxide spheres with a hierarchically porous structure for high-performance lithium–sulfur batteries

2019 ◽  
Vol 6 (9) ◽  
pp. 2528-2538
Author(s):  
Mengxia Li ◽  
Ying Dai ◽  
Xinmei Pei ◽  
Wen Chen
Keyword(s):  
Graphene Oxide ◽  
Porous Structure ◽  
High Performance ◽  
Three Dimensional ◽  
Hierarchically Porous ◽  
Hierarchically Porous Structure ◽  
Reduced Graphene ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur ◽  
High Sulfur Loading

A three-dimensional HrGO with a hierarchically porous structure was successfully synthesized as a sulfur-hosting material with high sulfur loading for high-performance lithium–sulfur batteries.

Optimized nitrogen-doped carbon with a hierarchically porous structure as a highly efficient cathode for Na–O2batteries

2016 ◽  
Vol 4 (25) ◽  
pp. 10008-10013 ◽  
Author(s):  
Jin-ling Ma ◽  
Xin-bo Zhang
Keyword(s):  
Porous Structure ◽  
Discharge Capacity ◽  
Carbon Material ◽  
Air Cathode ◽  
Hierarchically Porous ◽  
Nitrogen Doped ◽  
Hierarchically Porous Structure ◽  
Highly Efficient ◽  
Nitrogen Doped Carbon

Optimized N-doped carbon material as an air cathode for a Na–O2cell greatly improves discharge capacity by tuning the morphology of the products.

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