Generation of nanomaterials in dopant-containing liquid via pulsed laser ablation

Zhang, Q.; Honda, M.; Kulinich, S.A.; Ichikawa, Y.

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: 10 февраля 2021 г.

Авторы: Zhang Q., Honda M., Kulinich S.A., Ichikawa Y.
Журнал: Applied Surface Science
Том: 541
Год издания: 2021
Издательство: Elsevier BV
Местоположение издательства: Netherlands
Номер статьи: 148438
DOI: 10.1016/j.apsusc.2020.148438
Аннотация: Nanoparticles of ZnS doped with Cu were prepared by means of pulsed laser ablation in liquid medium containing Cu ions. Nanosecond pulsed laser was focused on Zn target immersed in mercaptoethanol with copper nitrate dissolved as a source of Cu ions. X-ray diffraction and X-ray photoelectron spectroscopy confirmed formation of wurtzite ZnS structures as the main product, while up to ~5% of Zn atoms were substituted by Cu when ≤1.0 mM Cu(NO3)2 in mercaproethanol was used as liquid medium. Elemental mapping revealed that dopant Cu atoms were uniformly distributed in the produced nanoparticles. Photoluminescence recorded fromthe doped nanomaterial exhibited an additional green emission, indicating the presence of interband states resulted from doping with Cu2+. Compared with undoped ZnS nanoparticles, their Cu-doped counterparts demonstrated more efficient photocatalytic behavior toward the decomposition of methylene blue (as model organic compound), which is believed to be caused either by more efficient light absorption extended into the visible region or by the carriers based on the Cu2+ state. The present study demonstrates that the technique used has the capacity of producing doped nanomaterials in one step by incorporating dopants from the liquid phase, which may be promising for preparing novel unique nanomaterials with complex composition.
Добавил в систему: Кулинич Сергей Алексеевич

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