Hostname: page-component-78c5997874-g7gxr Total loading time: 0 Render date: 2024-11-10T06:20:31.416Z Has data issue: false hasContentIssue false
  • English
  • Français

Semiconductor Heterojunctions for Enhanced Visible Light Photocatalytic H2 Production

Published online by Cambridge University Press:  17 April 2018

Shiba P. Adhikari ,
Zachary D. Hood  and
Abdou Lachgar
Shiba P. Adhikari*
Affiliation:
Department of Chemistry, Wake Forest University, Winston-Salem, NC 27109, USA Center for Energy, Environment and Sustainability (CEES), Wake Forest University, Winston-Salem, NC27109
Zachary D. Hood
Affiliation:
Center for Energy, Environment and Sustainability (CEES), Wake Forest University, Winston-Salem, NC27109 School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA30332, USA
Abdou Lachgar*
Affiliation:
Department of Chemistry, Wake Forest University, Winston-Salem, NC 27109, USA Center for Energy, Environment and Sustainability (CEES), Wake Forest University, Winston-Salem, NC27109
*
*Corresponding author email: adhikarisp@ornl.gov; lachgar@wfu.edu
*Corresponding author email: adhikarisp@ornl.gov; lachgar@wfu.edu
Get access

Abstract

Semiconductor-based heterojunctions have been shown to be effective photocatalytic materials to overcome the drawbacks of low photocatalytic efficiency that results from a high rate of electron−hole recombination and narrow photo-response range. In this paper, we report on the study of heterojunctions made from visible light active, graphitic carbon nitride, g-C3N4), and UV light active, strontium pyroniobate, Sr2Nb2O7. Heterojunctions made from a combination of g-C3N4 and nitrogen-doped Sr2Nb2O7 obtained at different temperatures were also studied to determine the effect of N doping. The photocatalytic performance was evaluated by using photocatalytic hydrogen evolution reaction (HER)from water g under visible light irradiation. It was found that the photocatalytic activities of as prepared heterojunctions are significantly higher than that of individual components under similar conditions. Heterojunction formed from g-C3N4 and N-doped Sr2Nb2O7 at 700°C (CN/SNON-700) showed better performance than heterojunction made from g-C3N4 and Sr2Nb2O7 (CN/SNO). A plausible mechanism for the heterojunction enhanced photocatalytic activity is proposed based on, relative band positions, and photoluminescence data.

Keywords

energy generationheterogenousphotochemical
Type
Articles
Information
MRS Advances , Volume 3 , Issue 55: Energy Materials and Technologies , 2018 , pp. 3263 - 3270
Copyright
Copyright © Materials Research Society 2018 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Footnotes

!

Current Address: Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge TN 37831, USA

#

Current Address: Electrochemical Materials Laboratory, Massachusetts Institute of Technology, Cambridge, MA 02139, USA

References

Fujishima, A., Honda, K., Nature 238, 37–38 (1972).CrossRefGoogle Scholar
Ahmed, M., Xinxin, G., Inorg Chem Front 3, 578–590 (2016).CrossRefGoogle Scholar
Ibhadon, O.A., Fitzpatrick, P., Catalysts 3 (2013).CrossRefGoogle Scholar
Jiao, W., Wang, L., Liu, G., (Max) Lu, G.Q., Cheng, H.-M., ACS Catal. 2, 1854–1859 (2012).CrossRefGoogle Scholar
Kumar, A., Patel, A.S., Mohanty, T., J. Phys. Chem. C 116, 20404–20408 (2012).CrossRefGoogle Scholar
Mills, A., Le Hunte, S., Photochem, J.. Photobiol. Chem. 108, 1–35 (1997).CrossRefGoogle Scholar
Asahi, R., Morikawa, T., Ohwaki, T., Aoki, K., Taga, Y., Science 293, 269–271 (2001).CrossRefGoogle Scholar
Abe, R., Photochem, J.. Photobiol. C Photochem. Rev. 11, 179–209 (2010).CrossRefGoogle Scholar
Maeda, K., Photochem, J.. Photobiol. C Photochem. Rev. 12, 237–268 (2011).CrossRefGoogle Scholar
Ni, M., Leung, M.K.H., Leung, D.Y.C., Sumathy, K., Renew. Sustain. Energy Rev. 11, 401–425 (2007).CrossRefGoogle Scholar
Wang, H., Zhang, L., Chen, Z., Hu, J., Li, S., Wang, Z., Liu, J., Wang, X., Chem Soc Rev 43, 5234–5244 (2014).CrossRefGoogle Scholar
Marschall, R., Adv. Funct. Mater. 24, 2421–2440 (2014).CrossRefGoogle Scholar
Li, S., Hu, S., Jiang, W., Liu, Y., Liu, J., Wang, Z., Mol. Catal. 435, 135–143 (2017).CrossRefGoogle Scholar
Li, S., Shen, X., Liu, J., Zhang, L., Env. Sci Nano 4, 1155–1167 (2017).CrossRefGoogle Scholar
Cao, S., Yu, J., J. Phys. Chem. Lett. 5, 2101–2107 (2014).CrossRefGoogle Scholar
Wang, X., Maeda, K., Thomas, A., Takanabe, K., Xin, G., Carlsson, J.M., Domen, K., Antonietti, M., Nat Mater 8, 76–80 (2009).CrossRefGoogle Scholar
Adhikari, S.P., Hood, Z.D., More, K.L., Chen, V.W., Lachgar, A., ChemSusChem 9, 1869–1879 (2016).CrossRefGoogle Scholar
Guo, J., Zhou, H., Ouyang, S., Kako, T., Ye, J., Nanoscale 6, 7303–7311 (2014).CrossRefGoogle Scholar
Adhikari, S.P., Dean, H., Hood, Z.D., Peng, R., More, K.L., Ivanov, I., Wu, Z., Lachgar, A., RSC Adv 5, 91094–91102 (2015).CrossRefGoogle Scholar
Li, S., Hu, S., Jiang, W., Liu, Y., Zhou, Y., Liu, Y., Mo, L., J. Colloid Interface Sci. 521, 42—49 (2018).CrossRefGoogle Scholar
Li, S., Hu, S., Zhang, J., Jiang, W., Liu, J., J. Colloid Interface Sci. 497, 93—101 (2017).CrossRefGoogle Scholar