Large-area superelastic graphene aerogels based on a room-temperature reduction self-assembly strategy for sensing and particulate matter (PM2.5 and PM10) capture

Nanoscale ◽  
2019 ◽  
Vol 11 (21) ◽  
pp. 10372-10380 ◽  
Author(s):  
Shuang Yan ◽  
Gongzheng Zhang ◽  
Feibo Li ◽  
Li Zhang ◽  
Sitong Wang ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Self Assembly ◽  
Room Temperature ◽  
Large Area ◽  
Assembly Strategy ◽  
Temperature Reduction ◽  
Graphene Aerogels ◽  
Pm2.5 And Pm10

Large-area multifunctional superelastic graphene aerogels (GAs) were successfully fabricated by a novel room-temperature reduction self-assembly (RTRS) strategy.

Electron Microscopy Study of Submicron Size Antiferromagnetic KMnF3 Nanoparticles and Their Self-assembly

2003 ◽  
Vol 775 ◽  
Author(s):  
Jeffrey Anderson ◽  
Rubi Garcia ◽  
Weilie L. Zhou
Keyword(s):  
Electron Microscopy ◽  
Self Assembly ◽  
Room Temperature ◽  
Microscopy Study ◽  
Electron Microscopy Study ◽  
Submicron Particles ◽  
Spherical Particles ◽  
Large Area ◽  
Homogeneous Crystal ◽  
Field Emission Electron Microscopy

AbstractSubmicron KMnF3 cubic and spherical nanoparticles were synthesized using the reverse micelle method. The nanostructures of the nanocrystals were studied by field emission electron microscopy and transmission electron microscopy. KMnF3 nanocrystals synthesized at room temperature started with cubic submicron particles (∼100 nm) and consisted of KMnF3 nanocrystallites (10-15 nm). As the reaction continued, the nanocrystals fused together and transformed into perfect cubic nanocrystals. Spherical beads composed of KMnF3 nanocrystallites were observed at low temperature synthesis. As the reaction continued, the spherical particles grew larger, however, no characteristic cubic shape of KMnF3 nanoparticles were observed. Even as they grew larger, there was no evidence of homogeneous crystal morphology as seen in the room temperature samples. Cubic shape KMnF3 nanocrystals were self-assembled into large area self-assembling patterns.

Thermal-assisted self-assembly: a self-adaptive strategy towards large-area uniaxial organic single-crystalline microribbon arrays

Nanoscale ◽  
2019 ◽  
Vol 11 (27) ◽  
pp. 12781-12787 ◽  
Author(s):  
Yu Zhang ◽  
Xiaoting Zhu ◽  
Shuyuan Yang ◽  
Fei Zhai ◽  
Fei Zhang ◽  
...  
Keyword(s):  
Self Assembly ◽  
Adaptive Strategy ◽  
Large Area ◽  
Single Crystalline ◽  
Assembly Strategy ◽  
Self Adaptive

Uniaxial organic single-crystalline microribbon arrays were produced by a novel self-adaptive thermal-assisted self-assembly strategy.

TERRACE INDUCED HOMOCHIRAL SELF-ASSEMBLY OF ZINC PHTHALOCYANINEON COPPER (111) SURFACE

2016 ◽  
Vol 23 (06) ◽  
pp. 1650047
Author(s):  
XIN SONG ◽  
HUIHUI KONG ◽  
LACHENG LIU ◽  
XIAOQING LIU ◽  
MINGDONG DONG ◽  
...  
Keyword(s):  
Self Assembly ◽  
Growth Process ◽  
Room Temperature ◽  
Organic Molecules ◽  
The Self ◽  
Step Edge ◽  
Suitable Method ◽  
Large Area ◽  
Molecular Assemblies ◽  
Lower Terrace

It is still a challenge to find a suitable method to fabricate a well-defined homochiral surface from achiral molecules, and one of the possible methods is to modify surfaces with organic molecular assemblies. Large-area chiral self-assembly nanostructures have been observed at room temperature by depositing ZnPc molecules on a Cu(111) surface. The growth process has been investigated. ZnPc molecules get adsorbed first at the terrace steps, and then extend over the lower terrace until the whole terrace is covered with ZnPc molecules; such growth process would be stopped when the self-assembly nanostructure run into a decorated upper terrace step edge. We found that the terrace steps with specific directions with respect to the close-packed directions of the substrate can induce homochiral self-assembly on the lower terraces. So we can propose a possible way to fabricate a well-defined homochiral surface from achiral organic molecules.

Magnetic observation of above room-temperature spin transition in vesicular nano-spheres

2016 ◽  
Vol 4 (34) ◽  
pp. 8061-8069 ◽  
Author(s):  
Yang-Hui Luo ◽  
Qing-Ling Liu ◽  
Li-Jing Yang ◽  
Yu Sun ◽  
Jin-Wen Wang ◽  
...  
Keyword(s):  
Self Assembly ◽  
Room Temperature ◽  
Spin Transition ◽  
Assembly Strategy ◽  
Transition Behavior

Above room-temperature spin-transition behavior has been achieved in a series of vesicular nano-spheres, which were prepared via a liposomal self-assembly strategy.

Green synthesis of mixed metallic nanoparticles using room temperature self-assembly

2017 ◽  
Vol 13 (2) ◽  
pp. 4671-4677 ◽  
Author(s):  
A. M. Abdelghany ◽  
A.H. Oraby ◽  
Awatif A Hindi ◽  
Doaa M El-Nagar ◽  
Fathia S Alhakami
Keyword(s):  
Self Assembly ◽  
Metallic Nanoparticles ◽  
Room Temperature ◽  
Bimetallic Nanoparticles ◽  
Reduction Process ◽  
Nano Particles ◽  
Nano Structure ◽  
Small Shift ◽  
Molar Ratios ◽  
Vis Spectroscopy

Bimetallic nanoparticles of silver (Ag) and gold (Au) were synthesized at room temperature using Curcumin. Reduction process of silver and gold ions with different molar ratios leads to production of different nanostructures including alloys and core-shells. Produced nanoparticles were characterized simultaneously with FTIR, UV/vis. spectroscopy, transmission electron microscopy (TEM), and Energy-dispersive X-ray (EDAX). UV/vis. optical absorption spectra of as synthesized nanoparticles reveals presence of surface palsmon resonance (SPR) of both silver at (425 nm) and gold at (540 nm) with small shift and broadness of gold band after mixing with resucing and capping agent in natural extract which suggest presence of bimetallic nano structure (Au/Ag). FTIR and EDAX data approve the presence of bimetallic nano structure combined with curcumin extract. TEM micrographs shows that silver and gold can be synthesized separately in the form of nano particles using curcumin extract. Synthesis of gold nano particles in presence of silver effectively enhance and control formation of bi-metallic structure.

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