Solvent-free hydrothermal synthesis of anatase TiO2 nanoparticles with enhanced photocatalytic hydrogen production activity

Ayad F. Alkaim; Tarek A. Kandiel; Falah H. Hussein; Ralf Dillert; Detlef W. Bahnemann

doi:10.1016/j.apcata.2013.06.033

Solvent-free hydrothermal synthesis of anatase TiO₂ nanoparticles with enhanced photocatalytic hydrogen production activity

Ayad F. Alkaim, Tarek A. Kandiel^*, Falah H. Hussein, Ralf Dillert, Detlef W. Bahnemann

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

88 Scopus citations

Abstract

TiO₂ nanoparticles exhibiting large surface area were synthesized by the hydrothermal treatment of the water soluble titanium(IV) bis(ammoniumlactato) dihydroxide (TALH) complex in the presence of aqueous ammonia. The obtained powders were characterized by X-ray diffraction, scanning electron microscopy, diffuse reflectance spectroscopy, and nitrogen adsorption. Their photocatalytic activities were assessed by the photocatalytic hydrogen evolution from aqueous EDTA solutions. The effects of Pt- and photocatalyst loading, EDTA concentration, light intensity, pH, and temperature on the H ₂ evolution rate were studied in detail. The highest reaction rate was obtained for the TiO₂ photocatalyst loaded with 0.4-0.5 wt.% Pt at pH 5 and this was found to be 18 and 34% higher than that of TiO₂ P25 and TiO₂ UV100, respectively. The reaction rate increased substantially with increasing the temperature from 5 C to 45 C.

Original language	English
Pages (from-to)	32-37
Number of pages	6
Journal	Applied Catalysis A: General
Volume	466
DOIs	https://doi.org/10.1016/j.apcata.2013.06.033
State	Published - 2013
Externally published	Yes

Bibliographical note

Funding Information:
We thank Dr. L. Robben (Solid State Chemical Crystallography, University of Bremen) for the XRD measurements and the Rietveld phase analysis. A. F. Alkaim thanks the Ministry of Higher Education and Scientific Research /Iraq for granting him a short visit scholarship. Financial support from the BMBF ( Bundesministerium für Bildung und Forschung ) within the project HyCats (Grant No. 01RC1012C ) is gratefully acknowledged.

Keywords

Anatase nanoparticles
EDTA
Photocatalysis
Photocatalytic hydrogen production
TiO

ASJC Scopus subject areas

Catalysis
Process Chemistry and Technology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.apcata.2013.06.033

Cite this

@article{bf1951d0ce07406d971de030cf35f3f6,

title = "Solvent-free hydrothermal synthesis of anatase TiO2 nanoparticles with enhanced photocatalytic hydrogen production activity",

abstract = "TiO2 nanoparticles exhibiting large surface area were synthesized by the hydrothermal treatment of the water soluble titanium(IV) bis(ammoniumlactato) dihydroxide (TALH) complex in the presence of aqueous ammonia. The obtained powders were characterized by X-ray diffraction, scanning electron microscopy, diffuse reflectance spectroscopy, and nitrogen adsorption. Their photocatalytic activities were assessed by the photocatalytic hydrogen evolution from aqueous EDTA solutions. The effects of Pt- and photocatalyst loading, EDTA concentration, light intensity, pH, and temperature on the H 2 evolution rate were studied in detail. The highest reaction rate was obtained for the TiO2 photocatalyst loaded with 0.4-0.5 wt.\% Pt at pH 5 and this was found to be 18 and 34\% higher than that of TiO2 P25 and TiO2 UV100, respectively. The reaction rate increased substantially with increasing the temperature from 5 C to 45 C.",

keywords = "Anatase nanoparticles, EDTA, Photocatalysis, Photocatalytic hydrogen production, TiO",

author = "Alkaim, \{Ayad F.\} and Kandiel, \{Tarek A.\} and Hussein, \{Falah H.\} and Ralf Dillert and Bahnemann, \{Detlef W.\}",

note = "Funding Information: We thank Dr. L. Robben (Solid State Chemical Crystallography, University of Bremen) for the XRD measurements and the Rietveld phase analysis. A. F. Alkaim thanks the Ministry of Higher Education and Scientific Research /Iraq for granting him a short visit scholarship. Financial support from the BMBF ( Bundesministerium f{\"u}r Bildung und Forschung ) within the project HyCats (Grant No. 01RC1012C ) is gratefully acknowledged.",

year = "2013",

doi = "10.1016/j.apcata.2013.06.033",

language = "English",

volume = "466",

pages = "32--37",

journal = "Applied Catalysis A: General",

issn = "0926-860X",

publisher = "Elsevier B.V.",

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T1 - Solvent-free hydrothermal synthesis of anatase TiO2 nanoparticles with enhanced photocatalytic hydrogen production activity

AU - Alkaim, Ayad F.

AU - Kandiel, Tarek A.

AU - Hussein, Falah H.

AU - Dillert, Ralf

AU - Bahnemann, Detlef W.

N1 - Funding Information: We thank Dr. L. Robben (Solid State Chemical Crystallography, University of Bremen) for the XRD measurements and the Rietveld phase analysis. A. F. Alkaim thanks the Ministry of Higher Education and Scientific Research /Iraq for granting him a short visit scholarship. Financial support from the BMBF ( Bundesministerium für Bildung und Forschung ) within the project HyCats (Grant No. 01RC1012C ) is gratefully acknowledged.

PY - 2013

Y1 - 2013

N2 - TiO2 nanoparticles exhibiting large surface area were synthesized by the hydrothermal treatment of the water soluble titanium(IV) bis(ammoniumlactato) dihydroxide (TALH) complex in the presence of aqueous ammonia. The obtained powders were characterized by X-ray diffraction, scanning electron microscopy, diffuse reflectance spectroscopy, and nitrogen adsorption. Their photocatalytic activities were assessed by the photocatalytic hydrogen evolution from aqueous EDTA solutions. The effects of Pt- and photocatalyst loading, EDTA concentration, light intensity, pH, and temperature on the H 2 evolution rate were studied in detail. The highest reaction rate was obtained for the TiO2 photocatalyst loaded with 0.4-0.5 wt.% Pt at pH 5 and this was found to be 18 and 34% higher than that of TiO2 P25 and TiO2 UV100, respectively. The reaction rate increased substantially with increasing the temperature from 5 C to 45 C.

AB - TiO2 nanoparticles exhibiting large surface area were synthesized by the hydrothermal treatment of the water soluble titanium(IV) bis(ammoniumlactato) dihydroxide (TALH) complex in the presence of aqueous ammonia. The obtained powders were characterized by X-ray diffraction, scanning electron microscopy, diffuse reflectance spectroscopy, and nitrogen adsorption. Their photocatalytic activities were assessed by the photocatalytic hydrogen evolution from aqueous EDTA solutions. The effects of Pt- and photocatalyst loading, EDTA concentration, light intensity, pH, and temperature on the H 2 evolution rate were studied in detail. The highest reaction rate was obtained for the TiO2 photocatalyst loaded with 0.4-0.5 wt.% Pt at pH 5 and this was found to be 18 and 34% higher than that of TiO2 P25 and TiO2 UV100, respectively. The reaction rate increased substantially with increasing the temperature from 5 C to 45 C.

KW - Anatase nanoparticles

KW - EDTA

KW - Photocatalysis

KW - Photocatalytic hydrogen production

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