News Column

Studies from Wuhan Textile University Yield New Information about Chalcogens

June 17, 2014

By a News Reporter-Staff News Editor at Life Science Weekly -- Investigators discuss new findings in Chalcogens. According to news reporting originating from Wuhan, People's Republic of China, by NewsRx correspondents, research stated, "In this work, we report on the gas-sensing behavior of Al-doped SnO2 nanotubes (NTs) in order to evaluate the effect of Al on improved sensing performance and propose an oxygen-vacancy-dominating sensing mechanism of SnO2. The hierarchical mesoporous Al-doped SnO2 NTs are fabricated by simple electro-spinning method and annealing treatment."

Our news editors obtained a quote from the research from Wuhan Textile University, "Al-doping shows profound influence on the oxygen vacancy of SnO2 which changes as a function of Al/(Al + Sn) ratio and the oxygen vacancy exhibits a maximum value when the ratio is 8%. As a result, the gas-sensing response to formaldehyde varies following the oxygen vacancies. Oxygen vacancies at the surface of SnO2 facilitate oxygen adsorption and the formation of surface catalytic active O--O-, thus the gas response is remarkably enhanced."

According to the news editors, the research concluded: "Furthermore, a new fundamental understanding toward the gas-sensing performance of oxygen-vacancy-dominating SnO2 is proposed."

For more information on this research see: Al-doping induced formation of oxygen-vacancy for enhancing gas-sensing properties of SnO2 NTs by electrospinning. Sensors and Actuators B-Chemical, 2014;198():62-69. Sensors and Actuators B-Chemical can be contacted at: Elsevier Science Sa, PO Box 564, 1001 Lausanne, Switzerland (see also Chalcogens).

The news editors report that additional information may be obtained by contacting J.J. Wu, Wuhan Text Univ, Sch Environm Engn, Wuhan 430073, People's Republic of China. Additional authors for this research include Q.W. Huang, D.W. Zeng, S.P. Zhang, L. Yang, D.S. Xia, Z.D. Xiong and C.S. Xie.

Keywords for this news article include: Asia, Wuhan, Chalcogens, People's Republic of China

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Source: Life Science Weekly

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