caa a22 4500 44530362X CHVBK 20180317142605.0 cr unu---uuuuu 170323e20101001xx s 000 0 eng 10.1007/s12274-010-0033-5 doi (NATIONALLICENCE)springer-10.1007/s12274-010-0033-5 TiO2 nanocrystals grown on graphene as advanced photocatalytic hybrid materials [Elektronische Daten] [Yongye Liang, Hailiang Wang, Hernan Sanchez Casalongue, Zhuo Chen, Hongjie Dai] A graphene/TiO2 nanocrystals hybrid has been successfully prepared by directly growing TiO2 nanocrystals on graphene oxide (GO) sheets. The direct growth of the nanocrystals on GO sheets was achieved by a two-step method, in which TiO2 was first coated on GO sheets by hydrolysis and crystallized into anatase nanocrystals by hydrothermal treatment in the second step. Slow hydrolysis induced by the use of EtOH/H2O mixed solvent and addition of H2SO4 facilitates the selective growth of TiO2 on GO and suppresses growth of free TiO2 in solution. The method offers easy access to the GO/TiO2 nanocrystals hybrid with a uniform coating and strong interactions between TiO2 and the underlying GO sheets. The strong coupling gives advanced hybrid materials with various applications including photocatalysis. The prepared graphene/TiO2 nanocrystals hybrid has superior photocatalytic activity to other TiO2 materials in the degradation of rhodamine B, showing an impressive three-fold photocatalytic enhancement over P25. It is expected that the hybrid material could also be promising for various other applications including lithium ion batteries, where strong electrical coupling to TiO2 nanoparticles is essential. Tsinghua University Press and Springer-Verlag Berlin Heidelberg, 2010 Graphene nationallicence titanium oxide nationallicence photocatalyst nationallicence hydrolysis nationallicence Liang Yongye Department of Chemistry and Laboratory for Advanced Materials, Stanford University, 94305, Stanford, CA, USA aut Wang Hailiang Department of Chemistry and Laboratory for Advanced Materials, Stanford University, 94305, Stanford, CA, USA aut Sanchez Casalongue Hernan Department of Chemistry and Laboratory for Advanced Materials, Stanford University, 94305, Stanford, CA, USA aut Chen Zhuo Department of Chemistry and Laboratory for Advanced Materials, Stanford University, 94305, Stanford, CA, USA aut Dai Hongjie Department of Chemistry and Laboratory for Advanced Materials, Stanford University, 94305, Stanford, CA, USA aut Nano Research Tsinghua Press 3/10(2010-10-01), 701-705 1998-0124 3:10<701 2010 3 12274 https://doi.org/10.1007/s12274-010-0033-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12274-010-0033-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Liang Yongye Department of Chemistry and Laboratory for Advanced Materials, Stanford University, 94305, Stanford, CA, USA aut NATIONALLICENCE 700 1- Wang Hailiang Department of Chemistry and Laboratory for Advanced Materials, Stanford University, 94305, Stanford, CA, USA aut NATIONALLICENCE 700 1- Sanchez Casalongue Hernan Department of Chemistry and Laboratory for Advanced Materials, Stanford University, 94305, Stanford, CA, USA aut NATIONALLICENCE 700 1- Chen Zhuo Department of Chemistry and Laboratory for Advanced Materials, Stanford University, 94305, Stanford, CA, USA aut NATIONALLICENCE 700 1- Dai Hongjie Department of Chemistry and Laboratory for Advanced Materials, Stanford University, 94305, Stanford, CA, USA aut NATIONALLICENCE 773 0- Nano Research Tsinghua Press 3/10(2010-10-01), 701-705 1998-0124 3:10<701 2010 3 12274 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer