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

doi:10.1016/j.apcata.2015.12.004

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 journal › Article › peer-review

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 8800μmolg_TiO2 ^-1 h^-1 under full arc, associated with high external quantum efficiencies of 12.6% and 5.4% respectively under 365nm irradiation.

Original language	English
Pages (from-to)	133–139
Number of pages	7
Journal	Applied Catalysis A: General
Volume	521
Early online date	4 Dec 2015
DOIs	https://doi.org/10.1016/j.apcata.2015.12.004
Publication status	Published - 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

Access to Document

10.1016/j.apcata.2015.12.004

Cite this

@article{8ca5af4895df486cb7c58f0c41c7e781,

title = "Size-controlled TiO2 nanoparticles on porous hosts for enhanced photocatalytic hydrogen production",

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.",

keywords = "hydrogen evolution, photocatalysis, porous supports, SBA-15, TiO, ZSM-5",

author = "Chaoran Jiang and Lee, {Ki Yip} and Parlett, {Christopher M.A.} and Bayazit, {Mustafa K.} and Lau, {Chi Ching} and Qiushi Ruan and Moniz, {Savio J.A.} and Lee, {Adam F.} and Junwang Tang",

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.",

year = "2016",

month = jul,

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doi = "10.1016/j.apcata.2015.12.004",

language = "English",

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journal = "Applied Catalysis A: General",

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T1 - Size-controlled TiO2 nanoparticles on porous hosts for enhanced photocatalytic hydrogen production

AU - Jiang, Chaoran

AU - Lee, Ki Yip

AU - Parlett, Christopher M.A.

AU - Bayazit, Mustafa K.

AU - Lau, Chi Ching

AU - Ruan, Qiushi

AU - Moniz, Savio J.A.

AU - Lee, Adam F.

AU - Tang, Junwang

N1 - 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.

PY - 2016/7/5

Y1 - 2016/7/5

N2 - 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.

AB - 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.

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KW - porous supports

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