A Novel Sol-Gel Method for Large-Scale Production of Nanopowders: Preparation of Li1.5Al0.5Ti1.5(PO4)3as an Example

2015 ◽  
Vol 99 (2) ◽  
pp. 410-414 ◽  
Author(s):  
Qianli Ma ◽  
Qi Xu ◽  
Chih-Long Tsai ◽  
Frank Tietz ◽  
Olivier Guillon
Nanomaterials ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 181
Author(s):  
Wai Kian Tan ◽  
Hiroyuki Muto ◽  
Go Kawamura ◽  
Zainovia Lockman ◽  
Atsunori Matsuda

In materials processing, the sol–gel method is one of the techniques that has enabled large-scale production at low cost in the past few decades. The versatility of the method has been proven as the fabrication of various materials ranging from metallic, inorganic, organic, and hybrid has been reported. In this review, a brief introduction of the sol–gel technique is provided and followed by a discussion of the significance of this method for materials processing and development leading to the creation of novel materials through sol–gel derived coatings. The controlled modification of sol–gel derived coatings and their respective applications are also described. Finally, current development and the outlook of the sol–gel method for the design and fabrication of nanomaterials in various fields are described. The emphasis is on the significant potential of the sol–gel method for the development of new, emerging technologies.


2006 ◽  
Vol 510-511 ◽  
pp. 66-69 ◽  
Author(s):  
Yan Fang Chen ◽  
Yun Soo Lim

Carbon nanotubes (CNTs) in a high yield were synthesized by the decomposition of the methane gas with CCVD, in which two different reaction routes of sol-gel method prepared Fe-Mo- Mg-O catalyst. The two different routs influenced the wall number and defects of CNTs and the formation of CNTs. The concentration of Mo in the catalyst played a very important role in the yield of CNTs.


2019 ◽  
Vol 21 (1) ◽  
pp. 1-6
Author(s):  
Fikri Aziz Shalahuddin ◽  
Sera Serinda Almekahdinah ◽  
Asep Bayu Dani Nandiyanto

The economic evaluation is one of the key points in building chemical industries. This paper presented a preliminary economic evaluation of the large scale production of zinc oxide (ZnO) nanoparticles using the sol-gel method, which is very useful for helping decision whether the fabrication of this material profitable or not. Particularly, the study was done by changing the cost of raw material, which was compared to several economic parameters such as GPM, PBP, and CNPV. The result showed that the project was profitable by increasing raw material cost below 100% from the estimated raw material cost, informing the fact for the prospective fabrication for fulfilling the demand of ZnO nanoparticles.


Nanomaterials ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 947 ◽  
Author(s):  
Usuma Naknikham ◽  
Giuliana Magnacca ◽  
Ang Qiao ◽  
Peter Kjær Kristensen ◽  
Vittorio Boffa ◽  
...  

Hetero-photocatalytic graphene-TiO2 materials have, in the literature, been found to possess better photocatalytic activity for environmental applications compared to pure TiO2. These types of materials can be prepared in different ways; however, their photocatalytic performance and quality are not easily controlled and reproduced. Therefore, we synthetized graphene oxide-TiO2 nanoparticles by sol-gel reaction from TiCl4, as precursor, with two different methods of synthesis and with a graphene oxide (GO) loading ranging from 0 to 1.0. This approach led to a good adhesion of GO to TiO2 through the Ti-O-C bonding, which could enhance the photocatalytic performances of the materials. Overall, 0.05 wt % GO loading gave the highest rate in the photodegradation of phenol under visible light, while higher GO loadings had a negative impact on the photocatalytic performances of the composites. The 0.05 wt % GO-TiO2 composite material was confirmed to be a promising photocatalyst for water pollutant abatement. The designed synthetic approach could easily be implemented in large-scale production of the GO-TiO2 coupling materials.


2006 ◽  
Vol 8 (9) ◽  
pp. 1023-1028 ◽  
Author(s):  
Céline Viazzi ◽  
Alberto Deboni ◽  
Jane Zoppas Ferreira ◽  
Jean-Pierre Bonino ◽  
Florence Ansart

2020 ◽  
Vol 10 (2) ◽  
Author(s):  
Muhammad Ilham Bayquni ◽  
Susanto Sigit Rahardi ◽  
Elsy Rahimi Chaldun ◽  
Bambang Sunendar Purwasasmita

Experimental and theoretical studies of the production of lithium manganese oxide (LiMn2O4) using sol-gel method have been carried out on a larger scale than previous studies.  The purpose of this investigation was to observe sample behavior along the synthesis process to be considered in further scale-up production of lithium manganese oxide, based on the sol-gel method. Calcination products were analyzed by TGA and crystalline phase formation analyzed by XRD. LiMn2O4 spinel phase was formed at 600oC. SEM showed some interesting morphology. Xerogel swelling was observed overwhelmingly during drying at 250oC to 300oC. Exothermic occurrence as a source of irregular and unpredictable auto combustion in the calcination process. Both phenomenon were not observed in a xerogel made with a small amount precursor. Therefore, initial mixture adjustment and additional steps were considered for production.


2014 ◽  
Vol 938 ◽  
pp. 19-23
Author(s):  
S. Ramesh ◽  
K.C. James Raju ◽  
C. Vishnuvardhan Reddy

The production of high purity samarium doped ceria (SDC20, Sm0.2Ce0.8O2-δ) nanopowders by modified sol-gel process using maltose and pectin as organic precursors. Around, 6 nm particle size can be obtained after calcination of the as synthesized (pre dried) gel at 500 °C for 2 h. Rietveld refinement of Powder X-ray diffraction (XRD) patterns confirms the cubic structure with single phase. Chemical composition of SDC20 is in good agreement with EDX measurements. TEM and XRD analysis indicate the influence of sintering temperature on particle size, which increases with increasing temperature. This modified sol-gel process is a non-toxic and environmentally friendly for large-scale production of high purity nanopowders.


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