scholarly journals A nanocomposite paper comprising calcium silicate hydrate nanosheets and cellulose nanofibers for high-performance water purification

RSC Advances ◽  
2020 ◽  
Vol 10 (51) ◽  
pp. 30304-30313
Author(s):  
Jie Li ◽  
Jingshu Zhang ◽  
Xuan Wu ◽  
Jiajun Zhao ◽  
Minjie Wu ◽  
...  
Keyword(s):  
Removal Efficiency ◽  
Water Purification ◽  
Water Permeability ◽  
Calcium Silicate ◽  
High Performance ◽  
Calcium Silicate Hydrate ◽  
Cellulose Nanofibers ◽  
High Water ◽  
Inorganic Contaminants

A nanocomposite paper with high water permeability and removal efficiency was prepared for the removal of organic and inorganic contaminants by filtration.

scholarly journals Effect of water/cement ratio on micro-nanomechanical properties of the interface between cementitious matrix and steel microfibers in ultra-high performance cementitious composites

2021 ◽  
Vol 14 (4) ◽  
Author(s):  
Vanessa Fernandes Cesari ◽  
Fernando Pelisser ◽  
Philippe Jean Paul Gleize ◽  
Milton Domingos Michel
Keyword(s):  
Transition Zone ◽  
Cement Paste ◽  
Calcium Silicate ◽  
High Performance ◽  
Calcium Silicate Hydrate ◽  
Interfacial Transition Zone ◽  
Cement Ratio ◽  
Water Cement Ratio ◽  
Nanomechanical Properties ◽  
Cementitious Matrix

abstract: Ultra-high performance concretes with steel microfibers have been studied in depth with the aim of producing more efficient and durable structures. The performance of these materials depends on the characteristics of the interface between microfibers and cementitious matrix. This research investigates the micro-nanomechanical properties of the interfacial transition zone between the steel microfibers and the matrix of ultra-high performance cementitious composite. The effect of the water/cement ratio and distance from the microfiber were analyzed. The results confirm the formation of high-density calcium-silicate-hydrate (HD C-S-H) matrix at higher concentrations than low-density calcium-silicate-hydrate (LD C-S-H) for w/c ratios of 0.2 and 0.3. The properties in cementitious matrix interface with steel microfibers were very similar to that measured for the cement paste, and no significant difference was observed regarding the distance to the microfibers in relation to the elastic modulus, hardness and chemical composition. Thus, the authors can conclude that the formation of a less resistant region does not occur at the interfacial transition zone cement paste/microfibers.

scholarly journals Vertically Aligned Carbon Nanotube Membranes: Water Purification and Beyond

Membranes ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 273
Author(s):  
Jeong Hoon Lee ◽  
Han-Shin Kim ◽  
Eun-Tae Yun ◽  
So-Young Ham ◽  
Jeong-Hoon Park ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Water Purification ◽  
Water Permeability ◽  
Proton Exchange Membrane ◽  
Antibacterial Properties ◽  
High Water ◽  
Proton Exchange ◽  
Conductive Membranes ◽  
Potential Applications ◽  
Vertically Aligned

Vertically aligned carbon nanotube (VACNT) membranes have attracted significant attention for water purification owing to their ultra-high water permeability and antibacterial properties. In this paper, we critically review the recent progresses in the synthesis of VACNT arrays and fabrication of VACNT membrane methods, with particular emphasis on improving water permeability and anti-biofouling properties. Furthermore, potential applications of VACNT membranes other than water purification (e.g., conductive membranes, electrodes in proton exchange membrane fuel cells, and solar electricity–water generators) have been introduced. Finally, future outlooks are provided to overcome the limitations of commercialization and desalination currently faced by VACNT membranes. This review will be useful to researchers in the broader scientific community as it discusses current and new trends regarding the development of VACNT membranes as well as their potential applications.

scholarly journals A novel surface cross-linked GO-based membrane with superior separation performance

RSC Advances ◽  
2017 ◽  
Vol 7 (85) ◽  
pp. 54213-54221 ◽  
Author(s):  
Zhen Qin ◽  
Lifang Wang ◽  
Wenzheng Zhang ◽  
Kai Pan
Keyword(s):  
Graphene Oxide ◽  
Composite Membrane ◽  
Water Permeability ◽  
High Performance ◽  
High Water ◽  
Separation Performance

In this study, a novel procedure of fabricating a high performance graphene oxide (GO) composite membrane with high water permeability and selectivity was developed.

scholarly journals Relaxivity and toxicological properties of manganese oxide nanoparticles for MRI applications

RSC Advances ◽  
2016 ◽  
Vol 6 (51) ◽  
pp. 45462-45474 ◽  
Author(s):  
Benedict You Wei Hsu ◽  
Georgia Kirby ◽  
Aaron Tan ◽  
Alexander M. Seifalian ◽  
Xu Li ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Manganese Oxide ◽  
Water Permeability ◽  
High Performance ◽  
High Water ◽  
Oxide Nanoparticles ◽  
Resonance Imaging ◽  
Manganese Oxide Nanoparticles

Hollow MnO morphology and high water permeability of shell coating for high performance magnetic resonance imaging.

Enhancing Water Permeability with Super-hydrophilic Metal-Organic Frameworks and Hydrophobic Straight Pores

2021 ◽  
Author(s):  
Mehdi Habibollahzadeh ◽  
Juran Noh ◽  
Liang Feng ◽  
Hong-Cai Zhou ◽  
Ahmed Abdel-Wahab ◽  
...  
Keyword(s):  
Osmotic Pressure ◽  
Water Permeability ◽  
Metal Organic Frameworks ◽  
Water Flux ◽  
Forward Osmosis ◽  
High Water ◽  
Metal Organic

High water flux and salt selectivity have been the most demanding goals for osmosis-based membranes. Osmotic pressure differences across membranes are particularly important in emerging forward osmosis and pressure retarded...

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