Doping high-surface-area mesoporous TiO2 microspheres with carbonate for visible light hydrogen production

Bin Liu, Li Min Liu, Xiu Feng Lang, Hsin Yi Wang, Xiong Wen Lou, Eray Aydil

Research output: Contribution to journalArticle

Abstract

First-principles calculations suggest that doping TiO2 with carbonate can effectively reduce the bandgap of TiO2, thus making TiO2 photoactive in the visible region of the solar spectrum. Herein we report a simple "one-pot" solvothermal method for synthesizing brown carbonate-doped TiO2 microspheres. The diameter of the TiO 2 microsphere is tunable from ∼0.5 to 4 μm with the nanopore size in the range of 3-11 nm. Remarkably, the specific surface area of these nanoporous anatase TiO2 microspheres can be as high as 500 m 2 g-1. A controllable amount of carbonate could be incorporated into TiO2 through low-temperature post-synthesis annealing, which extends the light absorption of the TiO2 microspheres from the ultraviolet to the visible region of the solar spectrum. Very high photocatalytic activity of these carbonate-doped TiO2 microspheres was demonstrated in the visible light region for both photocatalytic production of hydrogen from water and degradation of methyl orange. Under 3 Sun visible-light illumination (λ ≥ 400 nm), the carbonate-doped TiO2 microspheres can produce 0.2 mmol H2 h-1 g-1 of photocatalyst, which is significantly higher than those from various other TiO2 photocatalysts. This journal is

Original languageEnglish (US)
Pages (from-to)2592-2597
Number of pages6
JournalEnergy and Environmental Science
Volume7
Issue number8
DOIs
StatePublished - Jan 1 2014

Fingerprint

Carbonates
Hydrogen production
Microspheres
surface area
Doping (additives)
hydrogen
carbonate
Photocatalysts
anatase
annealing
Nanopores
Specific surface area
Sun
Titanium dioxide
Light absorption
Hydrogen
Energy gap
Lighting
degradation
Annealing

ASJC Scopus subject areas

  • Environmental Chemistry
  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Pollution

Cite this

Doping high-surface-area mesoporous TiO2 microspheres with carbonate for visible light hydrogen production. / Liu, Bin; Liu, Li Min; Lang, Xiu Feng; Wang, Hsin Yi; Lou, Xiong Wen; Aydil, Eray.

In: Energy and Environmental Science, Vol. 7, No. 8, 01.01.2014, p. 2592-2597.

Research output: Contribution to journalArticle

Liu, Bin ; Liu, Li Min ; Lang, Xiu Feng ; Wang, Hsin Yi ; Lou, Xiong Wen ; Aydil, Eray. / Doping high-surface-area mesoporous TiO2 microspheres with carbonate for visible light hydrogen production. In: Energy and Environmental Science. 2014 ; Vol. 7, No. 8. pp. 2592-2597.
@article{0441ce832d7b4de1b98b30d07d2f18f4,
title = "Doping high-surface-area mesoporous TiO2 microspheres with carbonate for visible light hydrogen production",
abstract = "First-principles calculations suggest that doping TiO2 with carbonate can effectively reduce the bandgap of TiO2, thus making TiO2 photoactive in the visible region of the solar spectrum. Herein we report a simple {"}one-pot{"} solvothermal method for synthesizing brown carbonate-doped TiO2 microspheres. The diameter of the TiO 2 microsphere is tunable from ∼0.5 to 4 μm with the nanopore size in the range of 3-11 nm. Remarkably, the specific surface area of these nanoporous anatase TiO2 microspheres can be as high as 500 m 2 g-1. A controllable amount of carbonate could be incorporated into TiO2 through low-temperature post-synthesis annealing, which extends the light absorption of the TiO2 microspheres from the ultraviolet to the visible region of the solar spectrum. Very high photocatalytic activity of these carbonate-doped TiO2 microspheres was demonstrated in the visible light region for both photocatalytic production of hydrogen from water and degradation of methyl orange. Under 3 Sun visible-light illumination (λ ≥ 400 nm), the carbonate-doped TiO2 microspheres can produce 0.2 mmol H2 h-1 g-1 of photocatalyst, which is significantly higher than those from various other TiO2 photocatalysts. This journal is",
author = "Bin Liu and Liu, {Li Min} and Lang, {Xiu Feng} and Wang, {Hsin Yi} and Lou, {Xiong Wen} and Eray Aydil",
year = "2014",
month = "1",
day = "1",
doi = "10.1039/c4ee00472h",
language = "English (US)",
volume = "7",
pages = "2592--2597",
journal = "Energy and Environmental Science",
issn = "1754-5692",
publisher = "Royal Society of Chemistry",
number = "8",

}

TY - JOUR

T1 - Doping high-surface-area mesoporous TiO2 microspheres with carbonate for visible light hydrogen production

AU - Liu, Bin

AU - Liu, Li Min

AU - Lang, Xiu Feng

AU - Wang, Hsin Yi

AU - Lou, Xiong Wen

AU - Aydil, Eray

PY - 2014/1/1

Y1 - 2014/1/1

N2 - First-principles calculations suggest that doping TiO2 with carbonate can effectively reduce the bandgap of TiO2, thus making TiO2 photoactive in the visible region of the solar spectrum. Herein we report a simple "one-pot" solvothermal method for synthesizing brown carbonate-doped TiO2 microspheres. The diameter of the TiO 2 microsphere is tunable from ∼0.5 to 4 μm with the nanopore size in the range of 3-11 nm. Remarkably, the specific surface area of these nanoporous anatase TiO2 microspheres can be as high as 500 m 2 g-1. A controllable amount of carbonate could be incorporated into TiO2 through low-temperature post-synthesis annealing, which extends the light absorption of the TiO2 microspheres from the ultraviolet to the visible region of the solar spectrum. Very high photocatalytic activity of these carbonate-doped TiO2 microspheres was demonstrated in the visible light region for both photocatalytic production of hydrogen from water and degradation of methyl orange. Under 3 Sun visible-light illumination (λ ≥ 400 nm), the carbonate-doped TiO2 microspheres can produce 0.2 mmol H2 h-1 g-1 of photocatalyst, which is significantly higher than those from various other TiO2 photocatalysts. This journal is

AB - First-principles calculations suggest that doping TiO2 with carbonate can effectively reduce the bandgap of TiO2, thus making TiO2 photoactive in the visible region of the solar spectrum. Herein we report a simple "one-pot" solvothermal method for synthesizing brown carbonate-doped TiO2 microspheres. The diameter of the TiO 2 microsphere is tunable from ∼0.5 to 4 μm with the nanopore size in the range of 3-11 nm. Remarkably, the specific surface area of these nanoporous anatase TiO2 microspheres can be as high as 500 m 2 g-1. A controllable amount of carbonate could be incorporated into TiO2 through low-temperature post-synthesis annealing, which extends the light absorption of the TiO2 microspheres from the ultraviolet to the visible region of the solar spectrum. Very high photocatalytic activity of these carbonate-doped TiO2 microspheres was demonstrated in the visible light region for both photocatalytic production of hydrogen from water and degradation of methyl orange. Under 3 Sun visible-light illumination (λ ≥ 400 nm), the carbonate-doped TiO2 microspheres can produce 0.2 mmol H2 h-1 g-1 of photocatalyst, which is significantly higher than those from various other TiO2 photocatalysts. This journal is

UR - http://www.scopus.com/inward/record.url?scp=84904131511&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84904131511&partnerID=8YFLogxK

U2 - 10.1039/c4ee00472h

DO - 10.1039/c4ee00472h

M3 - Article

AN - SCOPUS:84904131511

VL - 7

SP - 2592

EP - 2597

JO - Energy and Environmental Science

JF - Energy and Environmental Science

SN - 1754-5692

IS - 8

ER -