high efficient photocatalytic hydrogen evolution of … · 2013. 12. 5. · 1 electronic...
TRANSCRIPT
-
1
Electronic Supplementary Information
High efficient photocatalytic hydrogen evolution of
graphene/YInO3 nanocomposites under visible light irradiation Jianjun Dinga,b, Wenhao Yana,b, Wei Xiea,b, Song Suna,b, Jun Baoa,b and Chen Gaoa,b*
aNational Synchrotron Radiation Laboratory and Collaborative Innovation Center of Chemistry for Energy Materials, University of Science and
Technology of China, Hefei, Anhui 230029, China. Fax: +86(551)6514-1078; Tel: +86(551)63602031; E-mail: [email protected]
bCAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei,
Anhui 230026, China
Electronic Supplementary Material (ESI) for NanoscaleThis journal is © The Royal Society of Chemistry 2014
-
2
Fig. S1 XRD patterns of G/YIO nanocomposites with different graphene contents.
Fig. S2 The TEM image of YIO with different magnifications and the diameter
distributions of YIO nanoparticles.
Electronic Supplementary Material (ESI) for NanoscaleThis journal is © The Royal Society of Chemistry 2014
-
3
Fig. S3 The TEM image of YIO with different magnifications and the diameter
distributions of YIO nanoparticles.
From Fig. S2† and S3†, it can be seen that YIO exhibits a fine rod or spherical
shape and the particles linked end-to-end to form a net structure with a large degree of
porosity. Because of overlap inside the net structure, we calculated the diameter
distributions from the particles with clear boundary. The mean diameter was about
100 nm.
Electronic Supplementary Material (ESI) for NanoscaleThis journal is © The Royal Society of Chemistry 2014
-
4
Fig. S4 The TEM images of Pt0.5/YIO composite.
Fig. S5 FTIR spectra of GO, graphene, YIO and G0.5/YIO nanocomposite with
different magnifications.
Table S1 BET surface areas of G/YIO nanocomposites. Unit: m2 g-1.
Samples G0/YIO G0.1/YIO G0.3/YIO G0.5/YIO G0.7/YIO G1/YIO G2/YIO
SBET 7.64 8.58 10.17 13.26 13.88 17.13 19.29
Electronic Supplementary Material (ESI) for NanoscaleThis journal is © The Royal Society of Chemistry 2014
-
5
Fig. S6 Photocatalytic activities of Pt-dispersed YIO nanoparticles as a function of Pt
amount.
The influence of the amount of Pt loading on photocatalytic activity of Pt/YIO
composites is shown in Fig. S3. In the absence of Pt, the photocatalytic activity was
negligible for pure YIO. The addition of Pt significantly promoted the H2 evolution.
The activity increased with increasing the Pt loading and reached the maximum at Pt
loading of 0.5 wt%. Further increase resulted an obvious activity fall.
Electronic Supplementary Material (ESI) for NanoscaleThis journal is © The Royal Society of Chemistry 2014
-
6
Fig. S7 XRD pattern of G0.5/YIO nanocomposite after photocatalytic
reaction for 40 h.
Fig. S8 XPS spectra of Y 3d, In 3d and C 1s for G0.5/YIO nanocomposite after
photocatalytic reaction for 40 h.
Electronic Supplementary Material (ESI) for NanoscaleThis journal is © The Royal Society of Chemistry 2014
/ColorImageDict > /JPEG2000ColorACSImageDict > /JPEG2000ColorImageDict > /AntiAliasGrayImages false /CropGrayImages true /GrayImageMinResolution 150 /GrayImageMinResolutionPolicy /OK /DownsampleGrayImages false /GrayImageDownsampleType /Bicubic /GrayImageResolution 150 /GrayImageDepth 8 /GrayImageMinDownsampleDepth 2 /GrayImageDownsampleThreshold 1.50000 /EncodeGrayImages true /GrayImageFilter /FlateEncode /AutoFilterGrayImages false /GrayImageAutoFilterStrategy /JPEG /GrayACSImageDict > /GrayImageDict > /JPEG2000GrayACSImageDict > /JPEG2000GrayImageDict > /AntiAliasMonoImages false /CropMonoImages true /MonoImageMinResolution 1200 /MonoImageMinResolutionPolicy /OK /DownsampleMonoImages false /MonoImageDownsampleType /Bicubic /MonoImageResolution 1200 /MonoImageDepth -1 /MonoImageDownsampleThreshold 1.50000 /EncodeMonoImages true /MonoImageFilter /FlateEncode /MonoImageDict > /AllowPSXObjects false /CheckCompliance [ /None ] /PDFX1aCheck false /PDFX3Check false /PDFXCompliantPDFOnly false /PDFXNoTrimBoxError true /PDFXTrimBoxToMediaBoxOffset [ 0.00000 0.00000 0.00000 0.00000 ] /PDFXSetBleedBoxToMediaBox true /PDFXBleedBoxToTrimBoxOffset [ 0.00000 0.00000 0.00000 0.00000 ] /PDFXOutputIntentProfile (None) /PDFXOutputConditionIdentifier () /PDFXOutputCondition () /PDFXRegistryName () /PDFXTrapped /False
/Description >>> setdistillerparams> setpagedevice