ceramic nanofibers
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Small ◽  
2021 ◽  
pp. 2106500
Author(s):  
Xiaohan Li ◽  
Yuanyuan Zhang ◽  
Liang Zhang ◽  
Shuhui Xia ◽  
Yun Zhao ◽  
...  

Polymers ◽  
2021 ◽  
Vol 13 (24) ◽  
pp. 4319
Author(s):  
Hany S. Abdo ◽  
Ubair Abdus Samad ◽  
Mohamed S. Abdo ◽  
Hend I. Alkhammash ◽  
Muhammad Omer Aijaz

This study is focuses on the investigation of the effect of using TiO2 short nanofibers as a reinforcement of an Al matrix on the corrosion characteristics of the produced nanocomposites. The TiO2 ceramic nanofibers used were synthesized via electrospinning by sol-gel process, then calcinated at a high temperature to evaporate the residual polymers. The fabricated nanocomposites contain 0, 1, 3 and 5 wt.% of synthesized ceramic nanofibers (TiO2). Powder mixtures were mixed for 1 h via high-energy ball milling in a vacuum atmosphere before being inductively sintered through a high-frequency induction furnace at 560 °C for 6 min. The microstructure of the fabricated samples was studied by optical microscope and field emission scanning electron microscope (FESEM) before and after corrosion studies. Corrosion behavior of the sintered samples was evaluated by both electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization techniques (PPT) in 3.5% NaCl solution for one hour and 24-h immersion times. The results show that even though the percentage of ceramic nanofibers added negatively control corrosion resistance, it is still possible to increase resistance against corrosion for the fabricated nanocomposite by more than 75% in the longer exposure time periods.


Nanomaterials ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3221
Author(s):  
Yan Xing ◽  
Jing Cheng ◽  
Heping Li ◽  
Dandan Lin ◽  
Yuting Wang ◽  
...  

Ceramic fiber photocatalysts fabricated by electrospinning hold great potential in alleviating global environmental and energy issues. However, many challenges remain in improving their photocatalytic efficiencies, such as the limited carrier lifetime and solar energy utilization. To overcome these predicaments, various smart strategies have been invented and realized in ceramic fiber photocatalysts. This review firstly attempts to summarize the fundamental principles and bottlenecks of photocatalytic processes. Subsequently, the approaches of doping, surface plasmon resonance, and up-conversion fluorescent to enlarge the light absorption range realized by precursor composition design, electrospinning parameter control, and proper post heat-treatment process are systematically introduced. Furthermore, methods and achievements of prolonging the lifetime of photogenerated carriers in electrospun ceramic fiber photocatalysts by means of introducing heterostructure and defective composition are reviewed in this article. This review ends with a summary and some perspectives on the future directions of ceramic fiber photocatalysts.


Author(s):  
Ana Prado ◽  
Joao Malafatti ◽  
Jessica Oliveira ◽  
Caue Ribeiro ◽  
Miryam Rincón ◽  
...  

The increase in global warming due to NOx, CO2, and CH4 harmfully different ecosystems and significantly prejudice world life. A promising methodology in this sense is the pollutant conversion into valuable chemicals from photocatalytic processes by reusable photocatalyst. In this way, the present work aimed to produce a Nb2O5 photocatalyst nanofibers system to convert CO2 by the electrospinning method. Based on the collected data, the nanofibers calcination at 600°C for 2 h resulted in the best condition to obtain a homogeneous surface with an average diameter of 84 nm. As a result, the Nb2O5 nanofibers converted CO2 mostly into CO and CH4, reaching values around 8.5 μmol g−1 and 0.55 μmol g−1, respectively.


2021 ◽  
pp. 2103989
Author(s):  
Xiao Wang ◽  
Yuanyuan Zhang ◽  
Yun Zhao ◽  
Guang Li ◽  
Jianhua Yan ◽  
...  

2021 ◽  
Author(s):  
Nuray Kizildag

Ceramic materials are well known for their hardness, inertness, superior mechanical and thermal properties, resistance against chemical erosion and corrosion. Ceramic nanofibers were first manufactured through a combination of electrospinning with sol–gel method in 2002. The electrospun ceramic nanofibers display unprecedented properties such as high surface area, length, thermo-mechanical properties, and hierarchically porous structure which make them candidates for a wide range of applications such as tissue engineering, sensors, water remediation, energy storage, electromagnetic shielding, thermal insulation materials, etc. This chapter focuses on the most recent advances in the applications of ceramic nanofibers.


2021 ◽  
Vol 692 (2) ◽  
pp. 022047
Author(s):  
Yu Teng ◽  
Jie Liu ◽  
Yuexiwei Li ◽  
Linling Qiu ◽  
Wenli Zhang ◽  
...  
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