Narrando science, technology and products.

1. 100 nm

2. Fluorescent and magnetic monodisperse Fe3O4 nanoparticles covered
by a biocompatible fluorescent silica shell
Magnetism of the
nanoparticles
Photograph showing the
high stability in water of
the nanoprobes
TEM image of the Fe3O4
monodispersed nanoparticles
TEM images of the Fe3O4 nanoprobes
50 nm
25 nm ___ 25 nm ___
20 nm ___ 100 nm ___
100 nm 100 nm

3. Enzyme Immobilization on Magnetic Nanoparticles
Applications
 Synthesis of enantioenriched
monomers and macromers
 Polymerization reaction
 Biodiesel production
Example: Immobilization of lipolytic enzyme (E.C 3.1.1.1) on Fe3O4 nanoparticles
Advantages
 Easiness of recovery and reuse
 High enzyme loading capability due to
their large specific surface area
 Lower diffusion limitation in solutions
TEM image of Fe3O4 nanoparticles

4. Bi-layer
graphene
Graphene CCVD synthesis on Ni substrate

5. 110
200
211
Mean diameter 4.12 nmMean diameter 4.12 nm
Standard deviation 0.86 nmStandard deviation 0.86 nm
2 graphene
layers
Core-Shell graphene Fe/Co nanoparticles by CCVD

6. Graphene /SiC
0.35
a
CBA
0.35 nm
C/SiO2/SiC

7. N=100
Graphene flakes by physical exfoliation of graphite in NMP

8. TEM images of FE3O4 nanoparticles on graphene
nanosheets obtained by physical exfoliation of
graphite, at increasing magnification
Synthesis and characterization of FLG/Fe3O4 nanohybrid supercapacitor
100
1000
10000
100000
0 20 40 60 80
Energy density (Wh/kg)
Powerdensity(W/kg)
0
30
60
90
120
150
180
0 200 400 600 800 1000
Cycle Number
Capacitanceretention(F/g)
20 A/g
0
0,5
1
0 50 100 150 200 250
Time (sec)
Potential(V)
Galvanostatic charge/discharge curves of the nanohybrid (a, b, c).
Cyclic voltammetry of the nanohybrid (d).
Capacitance retention at 20 A/g (e).
Ragone Plot ( f).
d
e
f
a b c

9. Tribological resultsTribological results
WS2@oleylamineMoS2@oleylamine
SynthesisSynthesis
Rheological resultsRheological results
Nanoparticles and characterization
Raman Analysis
Surface 3D-profile analysis
SEM images of thin-film GO
chemically synthesized in high yield.
SEM images of thin-film GO
chemically synthesized in high yield.
TEM/SEM
(c)
Oil+0.05 wt.% of
graphene
Pure oil

10. Enhancing Lubricating Greases with Nano-sized Inorganic based Additives

11. Dehalogenation and Contemporaneous Removal of Halocarbon using
Ni/Graphene Nanoparticles (Ni/FLG)
Raman Spectrum
of Ni-FLG
G
2D
DNiO
TEM images of Ni/FLG: lots
of particles, 400-500 nm in
size and uniformly dispersed
on FLG, are visible
Diameter of 40-50 nm
solvent peaks (hexane)
GC-MS spectra after 15 min
GC-MS spectra
Chlordane
The chlordane was completely removed in 15 min.

12. WS2@oleylamine
a b
c d e
f
rGO
Magnetite/Graphene Oxide (Fe3O4/GO) as a novel nanoplatform for electrochemical
detection of Arsenic (III)
TEM images of as prepared of Fe3O4/rGO
Electrochemical detection of Fe3O4/rGO: Comparison of cyclic voltammograms
(CV) of GO, Fe3O4 and Fe3O4/rGO in PBS (a). CV of Fe3O4/rGO at increasing As (III) concentration
(b). Square wave anodic stripping voltammetry (SWASV) of Fe3O4/rGO (c). Relation between
arsenite concentration with peak current from CV as in (b); (d, e). Relation between arsenite
concentration with peak current from SWASV as in (c); (f).
As(III) was detected with a sensitivity of 2.6 μA ppb-1
and a
theoretical limit of detection (LOD) of 0.38 ppb.

13. Tomato waste for biodiesel production
CH2—OCOR1
|
CH—OCOR2
|
CH2—OCOR3
3CH3OH
CH2OH
|
CHOH
|
CH2OH
R1COOCH3
R2COOCH3
R3COOCH3
Tomato seed Oil Methanol Glycerol Methyl-ester
Fe3O4/Au@CA_L
GC Spectra
Biodiesel
producted
Functionalization and immobilization Lipase Production Biodiesel using immobilizated
lipase
Study of ratio molar oil/methanol and cycle number on conversion
biodiesel