Cerium-doped MIL-101-NH_2(Fe) as superior adsorbent for simultaneous capture of phosphate and As(Ⅴ) from Yangzonghai coastal spring water

Liu Meng; Huang Qilan; Li LiZhu GuipingYang XiangjunWang Shixiong

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Cerium-doped MIL-101-NH_2(Fe) as superior adsorbent for simultaneous capture of phosphate and As(Ⅴ) from Yangzonghai coastal spring water

机译：Cerium-doped MIL-101-NH_2(Fe) as superior adsorbent for simultaneous capture of phosphate and As(Ⅴ) from Yangzonghai coastal spring water

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A series of novel cerium-doped MIL-101-NH2 materials were synthesized using the solvothermal method for the simultaneous efficient removal of phosphate and As(V). According to the characterization results, cerium was successfully loaded onto MIL-101-NH2 and that Ce-MOFs might be generated during the loading process, which modified the crystal structure of MIL-101-NH2 and resulted in MOFs with different microstructures. In single-uptake systems containing only phosphate or As(V), isothermal adsorption experiments showed that 1Ce-MIL-101-NH2 exhibited better adsorption properties of phosphate and As(V) than MIL-101-NH2. Furthermore, the uptake amounts of phosphate and As(V) reached 341.5 mg/g and 249 mg/g, respectively. Superior uptake amounts for binary phosphate (167.36 mg/g) and As(V) (87.55 mg/g) were achieved with 1Ce-MIL-101-NH2. Kinetic experiments revealed a higher uptake rate of phosphate than of As(V). FT-IR and XPS analyses showed that the main mechanism for the removal of phosphate and As(V) from water by 1Ce-MIL-101-NH2 was the formation of an Fe/Ce-O-P inner complex through ligand complexation and electrostatic attraction. Furthermore, 1Ce-MIL-101-NH2 exhibited high selectivity and excellent efficiency in removing phosphate and As (V) in contaminated spring water in the presence of competing anions; this further confirms the application potential of the novel adsorbent.

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来源
《Journal of hazardous materials》 |2022年第5期|126981.1-126981.13|共13页
作者
Liu Meng; Huang Qilan; Li LiZhu GuipingYang XiangjunWang Shixiong;
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作者单位

Yunnan Univ, Key Lab Med Chem Nat Resource, Sch Chem Sci & Technol, Minist Educ, Kunming 650091, Yunnan, Peoples R China;

Scen Area Management Comm Yangzonghai, Kunming, Yunnan, Peoples R China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种英语
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关键词
Metal organic framework; Phosphate; As(V); Cerium doping; Uptake;

Cerium-doped MIL-101-NH_2(Fe) as superior adsorbent for simultaneous capture of phosphate and As(Ⅴ) from Yangzonghai coastal spring water

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