Jose Carlos Garcia Pereira

Prof. Jose Carlos Garcia Pereira

orcid

Research Focus & Metrics

Academic Career Length

36Years (1991-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
1 April 1999 in The Journal of Physical Chemistry A
Verified
Journal Article
Closed access
JPJose Carlos Garcia Pereira
Jose Carlos Garcia Pereira
CCC. R. A. Catlow
C. R. A. Catlow
GPG. D. Price
G. D. Price

1 April 1999 in The Journal of Physical Chemistry A
Verified
Journal Article
Closed access
JPJose Carlos Garcia Pereira
Jose Carlos Garcia Pereira
CCC. R. A. Catlow
C. R. A. Catlow
GPG. D. Price
G. D. Price

24 October 1998 in Chemistry of Materials
Verified
Journal Article
Closed access
CCC. Richard A. Catlow
C. Richard A. Catlow
DCDavid S. Coombes
David S. Coombes
DLDewi W. Lewis
Dewi W. Lewis
JPJose Carlos Garcia Pereira
Jose Carlos Garcia Pereira

1 January 1998 in Chemical Communications
Verified
Journal Article
Closed access
PDF file
JPJose Carlos Garcia Pereira
Jose Carlos Garcia Pereira
CCC. R. A. Catlow
C. R. A. Catlow
GPG. D. Price
G. D. Price
Ab initio techniques are used to investigate the mechanisms and energetics of condensation of two Si(OH)4 monomers in a simulated hydrated environment; the calculated activation energies accord well with those measured for silica condensation in sol–gel systems.

1 August 1993 in Journal of Non-Crystalline Solids
Verified
Journal Article
Closed access
Rui AlmeidaRui Almeida
Rui Almeida
JPJose Carlos Garcia Pereira
Jose Carlos Garcia Pereira
YMY. Messaddeq
Y. Messaddeq
MAM.A. Aegerter
M.A. Aegerter

10 July 2018 in Molecules
Verified
Journal Article
Open access
PDF file
Maria Clara GonçalvesMaria Clara Gonçalves
Maria Clara Gonçalves
JPJose Carlos Garcia Pereira
Jose Carlos Garcia Pereira
JMJoana Matos
Joana Matos
Helena VasconcelosHelena Vasconcelos
Helena Vasconcelos
In addition to its traditional application in white pigments, nanocrystalline titania (TiO2) has optoelectronic and photocatalytic properties (strongly dependent on crystallinity, particle size, and surface structure) that grant this naturally occurring oxide new technological applications. Sol-gel is one of the most widely used methods to synthesize TiO2 films and NPs, but the products obtained (mostly oxy-hydrated amorphous phases) require severe heat-treatments to promote crystallization, in which control over size and shape is difficult to achieve. In this work, we obtained new photocatalytic materials based on amorphous titania and measured their electronic band gap. Two case studies are reported that show the enormous potential of amorphous titania as bactericide or photocatalyst. In the first, amorphous sol-gel TiO2 thin films doped with N (TiO2−xNx, x = 0.75) were designed to exhibit a photonic band gap in the visible region. The identification of Ti-O-N and N-Ti-O bindings was achieved by XPS. The photonic band gaps were found to be 3.18 eV for a-TiO2 and 2.99 eV for N-doped a-TiO2. In the second study, amorphous titania and amine-functionalized amorphous titania nanoparticles were synthetized using a novel base-catalysed sol-gel methodology. All the synthesized amorphous TiO2 nanoparticles exhibit bactericide performance (E. coli, ASTME 2149-13).