One-step synthesis of graphene nanoplatelets/SiO2 hybrid materials with excellent toughening performance

2014 ◽  
Vol 36 (5) ◽  
pp. 907-912 ◽  
Author(s):  
Jiani Li ◽  
Kejing Yu ◽  
Kun Qian ◽  
Haijian Cao ◽  
Xuefeng Lu ◽  
...  
2020 ◽  
Author(s):  
Vasileios Tzitzios ◽  
Vishnu Pillai ◽  
Christina Gioti ◽  
Marios Katsiotis ◽  
Thomas Karagiannis ◽  
...  

Nanostructured transition metal phosphides gathered last years an elevated scientific interest, due to their unique physical-chemical properties. Nickel phosphide nanoparticles, with the controllable crystal structure, from the metal rich tetragonal Ni<sub>12</sub>P<sub>5</sub> to the phosphorous rich hexagonal Ni<sub>2</sub>P, and <i>hcp</i> Ni<sub>2</sub>P decorated r-GO (reduced graphene oxide), nano-hybrid materials have been synthesized via a novel one step organometallic approach in primary-tertiary aliphatic amines mixture. The nanoparticles are monodispersed, with spherical shape and controllable size in the sub-10 nm regime and decorate uniformly the surface of the r-GO, leading to the formation of Ni<sub>2</sub>P/r-GO hybrid materials. The materials were characterized by powder XRD, TEM and Raman spectroscopy and catalytically evaluated for the dibenzothiophene hydrodesulphurization (HDS) reaction. The results show that the role of the tertiary amine is crucial for the phosphidation process and the r-GO is an ideal alternative, to the traditional inorganic ones, support for the immobilization of the catalytically active component, preventing significantly sintering effects.


2018 ◽  
Vol 47 (9) ◽  
pp. 2925-2932 ◽  
Author(s):  
J. Brendlé

The sol–gel process involving hydrolysis and condensation reactions is an attractive way to form siloxane based hybrid materials since it is a one-step method performed under mild conditions.


2016 ◽  
Vol 7 (48) ◽  
pp. 7383-7390 ◽  
Author(s):  
E. Maetz ◽  
C. Croutxé-Barghorn ◽  
C. Delaite ◽  
X. Allonas

We investigate in this work a novel one-step methodology for preparing hybrid materials by combining photoinduced sol–gel polymerization and light-induced CuAAC reaction.


RSC Advances ◽  
2014 ◽  
Vol 4 (17) ◽  
pp. 8772 ◽  
Author(s):  
Yundan Liu ◽  
Long Ren ◽  
Xiang Qi ◽  
Yao Wang ◽  
Xuejun Liu ◽  
...  

Carbon ◽  
2011 ◽  
Vol 49 (9) ◽  
pp. 2944-2949 ◽  
Author(s):  
Xiaochen Dong ◽  
Bing Li ◽  
Ang Wei ◽  
Xiehong Cao ◽  
M.B. Chan-Park ◽  
...  

2020 ◽  
Author(s):  
Vasileios Tzitzios ◽  
Vishnu Pillai ◽  
Christina Gioti ◽  
Marios Katsiotis ◽  
Thomas Karagiannis ◽  
...  

Nanostructured transition metal phosphides gathered last years an elevated scientific interest, due to their unique physical-chemical properties. Nickel phosphide nanoparticles, with the controllable crystal structure, from the metal rich tetragonal Ni<sub>12</sub>P<sub>5</sub> to the phosphorous rich hexagonal Ni<sub>2</sub>P, and <i>hcp</i> Ni<sub>2</sub>P decorated r-GO (reduced graphene oxide), nano-hybrid materials have been synthesized via a novel one step organometallic approach in primary-tertiary aliphatic amines mixture. The nanoparticles are monodispersed, with spherical shape and controllable size in the sub-10 nm regime and decorate uniformly the surface of the r-GO, leading to the formation of Ni<sub>2</sub>P/r-GO hybrid materials. The materials were characterized by powder XRD, TEM and Raman spectroscopy and catalytically evaluated for the dibenzothiophene hydrodesulphurization (HDS) reaction. The results show that the role of the tertiary amine is crucial for the phosphidation process and the r-GO is an ideal alternative, to the traditional inorganic ones, support for the immobilization of the catalytically active component, preventing significantly sintering effects.


2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Elumalai Satheeshkumar ◽  
Taron Makaryan ◽  
Armen Melikyan ◽  
Hayk Minassian ◽  
Yury Gogotsi ◽  
...  

Abstract We report on one-step hybridization of silver, gold and palladium nanoparticles from solution onto exfoliated two-dimensional (2D) Ti3C2 titanium carbide (MXene) nanosheets. The produced hybrid materials can be used as substrates for surface-enhanced Raman spectroscopy (SERS). An approximate analytical approach is also developed for the calculation of the surface plasmon resonance (SPR) frequency of nanoparticles immersed in a medium, near the interface of two dielectric media with different dielectric constants. We obtained a good match with the experimental data for SPR wavelengths, 440 nm and 558 nm, respectively for silver and gold nanoparticles. In the case of palladium, our calculated SPR wavelength for the planar geometry was 160 nm, demonstrating that non-spherical palladium nanoparticles coupled with 2D MXene yield a broad, significanlty red-shifted SPR band with a peak at 230 nm. We propose a possible mechanism of the plasmonic hybridization of nanoparticles with MXene. The as-prepared noble metal nanoparticles on MXene show a highly sensitive SERS detection of methylene blue (MB) with calculated enhancement factors on the order of 105. These findings open a pathway for extending visible-range SERS applications of novel 2D hybrid materials in sensors, catalysis, and biomedical applications.


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