Correlation of the catalytic activity for oxidation taking place on various TiO2 surfaces with surface OH groups and surface oxygen vacancies

Chemistry : a European Journal
Zhanfeng ZhengHuaiyong Zhu

Abstract

Three catalytic oxidation reactions have been studied: The ultraviolet (UV) light induced photocatalytic decomposition of the synthetic dye sulforhodamine B (SRB) in the presence of TiO(2) nanostructures in water, together with two reactions employing Au/TiO(2) nanostructure catalysts, namely, CO oxidation in air and the decomposition of formaldehyde under visible light irradiation. Four kinds of TiO(2) nanotubes and nanorods with different phases and compositions were prepared for this study, and gold nanoparticle (Au-NP) catalysts were supported on some of these TiO(2) nanostructures (to form Au/TiO(2) catalysts). FTIR emission spectroscopy (IES) measurements provided evidence that the order of the surface OH regeneration ability of the four types of TiO(2) nanostructures studied gave the same trend as the catalytic activities of the TiO(2) nanostructures or their respective Au/TiO(2) catalysts for the three oxidation reactions. Both IES and X-ray photoelectron spectroscopy (XPS) proved that anatase TiO(2) had the strongest OH regeneration ability among the four types of TiO(2) phases or compositions. Based on these results, a model for the surface OH group generation, absorption, and activation of molecular oxygen has been p...Continue Reading

References

Jan 24, 2004·Science·Erik WahlströmFlemming Besenbacher
Apr 15, 2004·Angewandte Chemie·Masakazu DatéMasatake Haruta
Aug 28, 2004·Science·M S Chen, D W Goodman
May 19, 2005·Journal of the American Chemical Society·Yang Tian, Tetsu Tatsuma
Oct 4, 2005·Physical Review Letters·Angelo Bongiorno, Uzi Landman
Oct 21, 2005·Nature·Masatake Haruta
Apr 28, 2006·The Journal of Physical Chemistry. B·Juan D HenaoHarold H Kung
Oct 13, 2006·Chemical Reviews·Tracy L Thompson, John T Yates
Jul 9, 2008·Langmuir : the ACS Journal of Surfaces and Colloids·Ziyi ZhongYi-fan Han
Sep 3, 2008·Chemical Society Reviews·Rudy CoquetDavid J Willock

❮ Previous
Next ❯

Citations

Aug 25, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·Jyh Ming Wu, Yu Nong Chen
Jan 6, 2018·Nanomaterials·Mara BruzziMonica Scaringella
Aug 27, 2010·Chemistry : a European Journal·Zhaoke ZhengYing Dai
Jul 30, 2011·Physical Chemistry Chemical Physics : PCCP·Nina PerkasAharon Gedanken
Feb 24, 2011·Dalton Transactions : an International Journal of Inorganic Chemistry·Jasmin GeserickR Jürgen Behm
Apr 29, 2021·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Ali M Abdel-MageedJoachim Bansmann
Sep 7, 2012·Langmuir : the ACS Journal of Surfaces and Colloids·Poernomo GunawanZiyi Zhong
Jun 27, 2014·ACS Applied Materials & Interfaces·Jiajun WangChang-Jun Liu

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.