DataVXChemistry of MaterialsPaper
journal article·2012-04-10

Facile Synthesis of Highly Ordered Mesoporous and Well Crystalline TiO2: Impact of Different Gas Atmosphere and Calcination Temperatures on Structural Properties

Lars Robben, Adel A. Ismail, Sven Jare Lohmeier, Armin Feldhoff, Detlef W. Bahnemann, Josef-Christian Buhl

Chemistry of Materials· Volume 24· Issue 7
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Source abstract

Abstract

Ordered mesoporous TiO 2 nanoparticles with amorphous pore walls were synthesized by a facile one pot template synthesis. The samples were heat treated at different temperatures under oxidizing (air), inert (N 2 ), and reducing (N 2 /H 2 ) conditions before removing the template under air atmosphere at 350 °C. The use of N 2 /H 2 or N 2 atmospheres can effectively reduce the crystallite size by 2 nm compared to the calcination in air, leading to a better ordering of the mesoporous system than in the case of the calcination under air. The phase analysis of the powder diffraction data shows that the anatase content remains constant with temperature and is fed by an amorphous precursor and consumed by rutile when it is formed.
Source: openalex_inverted_index · Quality: baseline

Research context

Nanomaterials

OpenAlex topics: Catalytic Processes in Materials Science · Advanced Photocatalysis Techniques · TiO2 Photocatalysis and Solar Cells

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Leibniz University Hannover, Institute for Mineralogy, Callinstrasse 3, 30167 Hannover, Germany

Advanced Materials Department, Central Metallurgical R&D Institute (CMRDI), P.O. Box 87, Helwan, Cairo 11421, Egypt

Centre for Advanced Materials and Nanoengineering (CAMNE), Narjan University, P.O. Box 1988, Narjan 11001, Saudi Arabia

Leibniz University Hannover, Institute for Technical Chemistry, Callinstrasse 3, 30167 Hannover, Germany

Leibniz University Hannover, Institute for Inorganic Chemistry, Callinstrasse 9, 30167 Hannover, Germany

Leibniz University Hannover, Institute of Physical Chemistry and Electrochemistry, Callinstrasse 3a, 30167 Hannover, Germany

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