Synthesis of β-type Strontium Hydrogen Phosphate Nanosheets and Its Immobilization of Pb2+ in Acidic Aqueous Solution

Autor:	Wenfeng Shen, Zhuang Fuqiang, Weijie Song, Ruiqin Tan, Wei Xu, Xianpeng Zhang
Rok vydání:	2015
Předmět:	Strontium Aqueous solution Precipitation (chemistry) Inorganic chemistry Metals and Alloys chemistry.chemical_element Hydrogen phosphate Industrial and Manufacturing Engineering Hydrothermal circulation Ion chemistry.chemical_compound chemistry Dissolution Organometallic chemistry
Zdroj:	Acta Metallurgica Sinica (English Letters). 28:438-443
ISSN:	2194-1289 1006-7191
DOI:	10.1007/s40195-015-0214-z
Popis:	Highly crystalline β-type strontium hydrogen phosphate (β-SrHPO4) nanosheets were prepared by a hydrothermal method and used for the immobilization of lead ions (Pb2+) from acidic aqueous solution. The effects of various parameters on the immobilization process, including solution pH value, contact time, initial ion concentrations, and coexistent competing cations, were studied to optimize the conditions for maximum immobilization. The β-SrHPO4 nanosheets exhibited a capacity of (1,120 ± 22) mg/g toward Pb2+ in acidic solution (pH value is 3.0), and the equilibrium was achieved within 8 min. The competing cations such as Cu2+, Zn2+, Cd2+, and Co2+ affected slightly on the selective immobilization of Pb2+. The results revealed that the removal mechanism of Pb2+ by the β-SrHPO4 nanosheets was the dissolution/precipitation process in the acidic solution.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::58d0674ca80130f0d1cb7745d90c91ef https://doi.org/10.1007/s40195-015-0214-z Zobrazit plný text záznamu Full text from SpringerLink