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Facile synthesis and highly efficient selective adsorption properties of Y2Mo4O15 for methylene blue: Kinetics, thermodynamics and mechanical analyses
You Junhua1; Wang Renchao2; Liu Chaobin2; Shi Xiaojie2; Han Fei2; Guo Rui2; Liu Xuanwen2
2018
Source PublicationJOURNAL OF RARE EARTHS
ISSN1002-0721
Volume36Issue:8Pages:844-850
AbstractY2Mo4O15 particles were prepared using a simple solution method (SSM) and used as a highly efficient selective adsorbent for methylene blue (MB) in aqueous solutions. The maximum adsorption capacity of the samples was determined based on the adsorption isotherms with different adsorbent doses at 298, 318 and 338 K. The fittings of the temperature-dependent isotherms yield Delta(r)G(m)(theta) = -34.1 kJ/mol, Delta H-r(m)theta = -36.9 kJ/mol and Delta S-r(m)theta = -9.67 J/mol.K. The as-prepared Y2Mo4O15 has a very large maximum adsorption capacity (i.e., 198 mg/g) for MB at room temperature, and this value is only less than that of amorphous hardwood powder. Notably, 80 mg of adsorbent is able to completely decolorize 250 mL of 30 mg/L MB aqueous solution. The kinetic parameters of the adsorption process were obtained from the temperature-dependent adsorption isotherm (i.e., E-1 = 26.9 kJ/mol and E-1 = 63.8 kJ/mol). The results of adsorption kinetics show that it is a pseudo-second-order reaction. The mechanism of the high selectivity and the large adsorption capacity is discussed based on competitive ion (CI) experiments and coordination theory. (C) 2018 Published by Elsevier B.V. on behalf of Chinese Society of Rare Earths.
Other AbstractY_2Mo_4O_(15) particles were prepared using a simple solution method (SSM) and used as a highly efficient selective adsorbent for methylene blue (MB) in aqueous solutions. The maximum adsorption capacity of the samples was determined based on the adsorption isotherms with different adsorbent doses at 298, 318 and 338 K. The fittings of the temperature-dependent isotherms yield ?_r_m~θ = -34.1 kJ/mol, ?_H_m~θ = -36.9 kJ/mol and ?_S_m~θ = -9.67 J/mol·K. The as-prepared Y_2Mo_4O_(15) has a very large maximum adsorption capacity (i.e., 198 mg/g) for MB at room temperature, and this value is only less than that of amorphous hardwood powder. Notably, 80 mg of adsorbent is able to completely decolorize 250 mL of 30 mg/L MB aqueous solution. The kinetic parameters of the adsorption process were obtained from the temperature-dependent adsorption isotherm (i.e., E_1 = 26.9 kJ/mol and E_(-1) = 63.8 kJ/mol). The results of adsorption kinetics show that it is a pseudo-second-order reaction. The mechanism of the high selectivity and the large adsorption capacity is discussed based on competitive ion (CI) experiments and coordination theory.
KeywordAQUEOUS-SOLUTION REMOVAL LUMINESCENCE COMPOSITE LIGHT EQUILIBRIUM NANOTUBES PHOSPHORS BEHAVIOR WATER Y2Mo4O15 Adsorption Methylene blue (MB) Simple solution method (SSM) Rare earths
Indexed ByCSCD
Language英语
Funding Project[Fundamental Research Funds for the Central Universities] ; [Basic Key Program of Applied Basic Research of Science and Technology Commission Foundation of Hebei Province in China] ; [Natural Science Foundation of Liaoning Province] ; [Hebei Province Higher Education Research Project] ; [Northeastern University at Qinhuangdao Campus Research Fund]
CSCD IDCSCD:6308002
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Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/149338
Collection中国科学院金属研究所
Affiliation1.中国科学院金属研究所
2.Northeastern Univ Qinhuangdao, Sch Resources & Materials, Qinhuangdao 066004, Peoples R China
3.国家纳米科学中心
Recommended Citation
GB/T 7714
You Junhua,Wang Renchao,Liu Chaobin,et al. Facile synthesis and highly efficient selective adsorption properties of Y2Mo4O15 for methylene blue: Kinetics, thermodynamics and mechanical analyses[J]. JOURNAL OF RARE EARTHS,2018,36(8):844-850.
APA You Junhua.,Wang Renchao.,Liu Chaobin.,Shi Xiaojie.,Han Fei.,...&Liu Xuanwen.(2018).Facile synthesis and highly efficient selective adsorption properties of Y2Mo4O15 for methylene blue: Kinetics, thermodynamics and mechanical analyses.JOURNAL OF RARE EARTHS,36(8),844-850.
MLA You Junhua,et al."Facile synthesis and highly efficient selective adsorption properties of Y2Mo4O15 for methylene blue: Kinetics, thermodynamics and mechanical analyses".JOURNAL OF RARE EARTHS 36.8(2018):844-850.
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