silica nanotubes
Recently Published Documents


TOTAL DOCUMENTS

289
(FIVE YEARS 24)

H-INDEX

46
(FIVE YEARS 3)

2021 ◽  
Vol 18 ◽  
Author(s):  
Vivek Srivastava

: The catalytic display of supported heterogeneous catalysts is essentially reliant on their constitutive elements including active species and supports. Accordingly, the scheme and development of active catalysts with synergistically enhanced outcomes between active sites and supports are of high importance. A simple NaBH4 reduction method was used to synthesize cylindrical amine-functionalized silica nanotubes supported Ru catalyst (ASNT@Ru catalyst) including amine functionality. The physicochemical properties of the material were analyzed by various analytical methods such as SEM-TEM analysis, N2 physisorption, ICP-OES, XPS, etc, and all the data were found in good agreement with each other. Amine-free SNT support using the calcination process was also synthesized to examine the effect of amine in ASNT support on the uniform Ru dispersion. Taking the advantages of the fundamental physical and chemical properties of ASNT support and well-distributed Ru NPs, the ASNT@Ru catalyst was utilized for CO2 hydrogenation reaction and gave excellent catalytic activity/ stability in terms of a good quantity of the formic. 5 times catalysts recycling were recorded, and formic acid was obtained in good quantity.


2021 ◽  
pp. 338860
Author(s):  
Tariq A. Altalhi ◽  
Mohamed M. Ibrahim ◽  
Gaber A.M. Mersal ◽  
Mohammed Alsawat ◽  
M.H.H. Mahmoud ◽  
...  

Author(s):  
Meng Chen ◽  
Xianwei Xie ◽  
Yanan Wang ◽  
Xinchang Pang ◽  
Zhongfan Jia

2021 ◽  
Vol 329 ◽  
pp. 115585
Author(s):  
Khlood S. Abou-Melha ◽  
Gamil A.A. Al-Hazmi ◽  
Turki M. Habeebullah ◽  
Ismail Althagafi ◽  
Abdullah Othman ◽  
...  

Molecules ◽  
2021 ◽  
Vol 26 (4) ◽  
pp. 1073
Author(s):  
Jingxin Zhu ◽  
Haijuan Wu ◽  
Ding Wang ◽  
Yanlong Ma ◽  
Lan Jia

This paper presents a facile and low-cost strategy for fabrication lysozyme-loaded mesoporous silica nanotubes (MSNTs) by using silk fibroin (SF) nanofiber templates. The “top-down method” was adopted to dissolve degummed silk in CaCl2/ formic acid (FA) solvent, and the solution containing SF nanofibrils was used for electrospinning to prepare SF nanofiber templates. As SF contains a large number of -OH, -NH2 and -COOH groups, the silica layer could be easily formed on its surface by the Söber sol-gel method without adding any surfactant or coupling agent. After calcination, the MSNTs were obtained with inner diameters about 200 nm, the wall thickness ranges from 37 ± 2 nm to 66 ± 3 nm and the Brunauer–Emmett–Teller (BET) specific surface area was up to 200.48 m2/g, the pore volume was 1.109 cm3/g. By loading lysozyme, the MSNTs exhibited relatively high drug encapsulation efficiency up to 31.82% and an excellent long-term sustained release in 360 h (15 days). These results suggest that the MSNTs with the hierarchical structure of mesoporous and macroporous will be a promising carrier for applications in biomacromolecular drug delivery systems.


Sign in / Sign up

Export Citation Format

Share Document