Greatly enhanced electrochemiluminescence of CdS nanocrystals upon heating in the presence of ammonia

Autor:	Qiongfang Chen, Fuqiang Zhang, Lun Wang, Haiyan Wang, Zhian Tan
Rok vydání:	2010
Předmět:	Chemistry Inorganic chemistry Glassy carbon electrode Phosphate buffered saline Photochemistry lcsh:Chemistry Ammonia chemistry.chemical_compound lcsh:Industrial electrochemistry lcsh:QD1-999 Nanocrystal Excited state Electrochemistry Electrochemiluminescence lcsh:TP250-261
Zdroj:	Electrochemistry Communications, Vol 12, Iss 5, Pp 650-652 (2010)
ISSN:	1388-2481
DOI:	10.1016/j.elecom.2010.02.022
Popis:	CdS nanocrystals (NCs) usually exhibit very weak electrochemiluminescence (ECL) emission. It is showed that when CdS NCs were treated by heating in the presence of ammonia (heated-CdS–NH3), greatly enhanced ECL was observed. The ECL of the heated-CdS–NH3 modified glassy carbon electrode (heated-CdS–NH3/GCE) in phosphate buffer solution (pH 7.0) containing 0.1 M K2S2O8 was ca. 310 times higher than that of CdS/GCE. The treatment caused the changes in the morphology and surface electronic structure of CdS NCs, which facilitated the reduction process of CdS, consequently improved the quantity of the excited states (CdS*), leading to enormous enhancement in ECL. Keywords: Electrochemiluminescence, CdS nanocrystals, Ammonia, Heating
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2738d88cdf08ad30385a7caf5c9533b8 https://doi.org/10.1016/j.elecom.2010.02.022 Zobrazit plný text záznamu Full Text from ScienceDirect