Au-Pd nanoparticles enfolded in coil-like TiO2 immobilized on carbon fibers felt as recyclable nanocatalyst for benzene oxidation under mild conditions

Hosseini, S.M.; Ghiaci, M.; Kulinich, S.A.; Wunderlich, W.; Monjezi, B.H.; Ghorbani, Y.; Ghaziaskar, H.S.; Koupaei, A.J.

Статья опубликована в высокорейтинговом журнале

Информация о цитировании статьи получена из Web of Science, Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 4 марта 2020 г.

Авторы: Hosseini S.M., Ghiaci M., Kulinich S.A., Wunderlich W., Monjezi B.Hosseini, Ghorbani Y., Ghaziaskar H.S., Koupaei A.Javaheri
Журнал: Applied Surface Science
Том: 506
Год издания: 2020
Издательство: Elsevier BV
Местоположение издательства: Netherlands
Первая страница: 144644
DOI: 10.1016/j.apsusc.2019.144644
Аннотация: Carbon fiber felt (CFF) is considered as a stable carbonaceous support for different applications such as absorbents and catalysts. Herein, a novel method for preparation of Au-Pd/CFF@TiO2 catalysts is presented. Structure, morphology, and performance of the novel nano-catalyst were characterized during different stages of their fabrication by means of structural, chemical and optical techniques. The results demonstrated that, compared with the other products, the Au-Pd/CFF@TiO2 composite pyrolyzed at 450 °C had the highest thermal and mechanical stability, as well as better textural features. It showed good catalytic activity in oxidation of benzeneto- phenol by hydrogen peroxide (25%) as eco-friendly oxidant under mild thermal conditions. The influence of different parameters on the oxidation process, such as reaction temperature, amounts of catalyst, oxidant/ substrate molar ratio and condensation temperature, was investigated to optimize the catalyst. At the optimum set of conditions, the Au-Pd/CFF@TiO2-450 showed the values of yield and selectivity for phenol as the main product as high as 46% and 100%, respectively. The catalyst maintained its activity after eight cycles and thus looks very promising for direct conversion of benzene to phenol under mild conditions.
Добавил в систему: Кулинич Сергей Алексеевич

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Au-Pd nanoparticles enfolded in coil-like TiO2 immobilized on carbon fibers felt as recyclable nanocatalyst for benzene oxidation under mild conditionsстатья

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