Size-controlled TiO2 nanoparticles on porous hosts for enhanced photocatalytic hydrogen production

Chaoran Jiang, Ki Yip Lee, Christopher M.A. Parlett, Mustafa K. Bayazit, Chi Ching Lau, Qiushi Ruan, Savio J.A. Moniz, Adam F. Lee, Junwang Tang*

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

Nanocystalline TiO2 particles were successfully synthesized on porous hosts (SBA-15 and ZSM-15) via a sol-gel impregnation method. Resulting nanocomposites were characterized by XRD, TEM, BET surface analysis, Raman and UV-vis diffuse reflectance spectroscopy, and their photocatalytic activity for H2 production evaluated. XRD evidences the formation of anatase nanoparticles over both ZSM-5 and SBA-15 porous supports, with TEM highlighting a strong particle size dependence on titania precursor concentration. Photocatalytic activities of TiO2/ZSM-5 and TiO2/SBA-15 composites were significantly enhanced compared to pure TiO2, owing to the smaller TiO2 particle size and higher surface area of the former. TiO2 loadings over the porous supports and concomitant photocatalytic hydrogen production were optimized with respect to light absorption, available surface reaction sites and particle size. 10%TiO2/ZSM-5 and 20%TiO2/SBA-15 proved the most active photocatalysts, exhibiting extraordinary hydrogen evolution rates of 10,000 and 8800μmolgTiO2 -1 h-1 under full arc, associated with high external quantum efficiencies of 12.6% and 5.4% respectively under 365nm irradiation.

Original languageEnglish
Pages (from-to)133–139
Number of pages7
JournalApplied Catalysis A: General
Volume521
Early online date4 Dec 2015
DOIs
Publication statusPublished - 5 Jul 2016

Bibliographical note

Funding: China Scholarship Counci (CSC file No. 201308060090); Leverhulme Trust (RPG-2012-582); EU FP7 (4G-PHOTOCAT 309636); EPSRC (EP/K029525/2 and EP/K021796/1).

Supplementary data available on the journal website.

Keywords

  • hydrogen evolution
  • photocatalysis
  • porous supports
  • SBA-15
  • TiO
  • ZSM-5

Fingerprint Dive into the research topics of 'Size-controlled TiO<sub>2</sub> nanoparticles on porous hosts for enhanced photocatalytic hydrogen production'. Together they form a unique fingerprint.

  • Cite this

    Jiang, C., Lee, K. Y., Parlett, C. M. A., Bayazit, M. K., Lau, C. C., Ruan, Q., Moniz, S. J. A., Lee, A. F., & Tang, J. (2016). Size-controlled TiO2 nanoparticles on porous hosts for enhanced photocatalytic hydrogen production. Applied Catalysis A: General, 521, 133–139. https://doi.org/10.1016/j.apcata.2015.12.004