@misc{10481/88216,
year = {2014},
month = {10},
url = {https://hdl.handle.net/10481/88216},
abstract = {Photocatalysis has gained relevance in many applications, including production of fuels, green synthesis of added value products and water detoxification. Graphene–TiO2 photocatalysts are attracting great attention, but they should be prepared adequately, protecting the carbon material from the surrounding reactive media, maximizing the contact between TiO2 and graphene, and envisaging broad spectral response. Hereby, graphene oxide was chemically reduced using vitamin C and glucose (environmental friendly reducing agents) as well as hydrazine, and the evolution of the graphene oxygenated surface groups was systematically analyzed (pHPZC, TPD, TG, XPS, DRUV–Vis, Raman and ATR–FTIR). These functionalities (such as epoxy and hydroxyl groups) mediate the efficient and uniform assembly of the TiO2 nanoparticles on the graphene oxide sheets, leading to highly efficient photocatalysts both under near-UV/Vis and visible light, which is of particular relevance for solar applications.},
organization = {Financial support for this work was provided by projects PTDC/AAC-AMB/122312/2010 co-financed by FCT (Fundação para a Ciência e a Tecnologia) and FEDER (ERDF—European Regional Development Fund) through Programme COMPETE (FCOMP-01-0124-FEDER-019503). This work was also partially co-financed by FCT and FEDER through project PEst-C/EQB/LA0020/2013 (COMPETE), and by QREN, ON2 (North Portugal Regional Operational Programme) and FEDER through projects NORTE-07-0162-FEDER-000050, NORTE-07-0162-FEDER-000015 and NEPCAT (nr. 38900) in the National Strategic Reference Framework (NSRF). LMPM and SMT acknowledge financial support from FCT grants SFRH/BPD/88964/2012 and SFRH/BPD/74239/2010, respectively. AMTS acknowledges the FCT Investigator 2013 Programme (IF/01501/2013), with financing from the European Social Fund and the Human Potential Operational Programme. Technical assistance by Dr Carlos Sá and CEMUP team with XPS analysis is gratefully acknowledged.},
publisher = {Elsevier},
title = {Role of oxygen functionalities on the synthesis of photocatalytically active graphene-TiO2 composites},
doi = {10.1016/j.apcatb.2014.04.024},
author = {Pastrana Martínez, Luisa María and Morales Torres, Sergio and Likodimos, V. and Falaras, P. and Figueiredo, J.L. and Faria, J.L and Silva, A.M.T.},
}