scholarly journals A mesoporous titanium glycolate with exceptional adsorption capacity to remove multiple heavy metal ions in water

RSC Advances ◽  
2017 ◽  
Vol 7 (48) ◽  
pp. 30199-30204 ◽  
Author(s):  
Wei Han ◽  
Xiulin Yang ◽  
Fuwen Zhao ◽  
Xiaofeng Shi ◽  
Taishan Wang ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Adsorption Capacity ◽  
Heavy Metal Ions ◽  
Hydrothermal Reaction ◽  
One Pot ◽  
Green Strategy ◽  
Titanium Glycolate

A facile, green strategy is explored to obtain mesoporous titanium glycolate (Ti(OCH2CH2O)2) via a one-pot hydrothermal reaction.

scholarly journals Effects of Electronegativity and Hydration Energy on the Selective Adsorption of Heavy Metal Ions by Synthetic NaX Zeolite

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4066
Author(s):  
Xianyuan Fan ◽  
Hong Liu ◽  
Emmanuella Anang ◽  
Dajun Ren
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Adsorption Capacity ◽  
Heavy Metal Ions ◽  
Binary Systems ◽  
Adsorption Mechanism ◽  
Selective Adsorption ◽  
Hydration Energy ◽  
Nax Zeolite ◽  
High Electronegativity

The adsorption capacity of synthetic NaX zeolite for Pb2+, Cd2+, Cu2+ and Zn2+ in single and multi-component systems were investigated. The effects of electronegativity and hydration energy on the selective adsorption, as well as potential selective adsorption mechanism of the NaX zeolite for Pb2+, Cd2+, Cu2+ and Zn2+ were also discussed. The maximum adsorption capacity order of the heavy metals in the single system was Pb2+ > Cd2+ > Cu2+ > Zn2+, and this could be related to their hydration energy and electronegativity. The values of the separation factors (α) and affinity constant (KEL) in different binary systems indicated that Pb2+ was preferentially adsorbed, and Zn2+ presented the lowest affinity for NaX zeolite. The selective adsorption capacities of the metals were in the order, Pb2+ > Cd2+ ≈ Cu2+ > Zn2+. The trend for the selective adsorption of NaX zeolite in ternary and quaternary systems was consistent with that in the binary systems. Pb2+ and Cu2+ reduced the stability of the Si-O-Al bonds and the double six-membered rings in the NaX framework, due to the high electronegativity of Pb2+ and Cu2+ than that of Al3+. The selective adsorption mechanism of NaX zeolite for the high electronegative metal ions could mainly result from the negatively charged O in the Si-O-Al structure of the NaX zeolite, hence heavy metal ions with high electronegativity display a strong affinity for the electron cloud of the oxygen atoms in the Si-O-Al. This study could evaluate the application and efficiency of zeolite in separating and recovering certain metal ions from industrial wastewater.

One-pot method to prepare lignin-based magnetic biosorbents for bioadsorption of heavy metal ions

2022 ◽  
Vol 176 ◽  
pp. 114387
Author(s):  
Liping Tan ◽  
Yongchao Zhang ◽  
Weihua Zhang ◽  
Rongwen Zhao ◽  
Yue Ru ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
One Pot

scholarly journals Expression of concern: One-pot synthesis of O-doped BN nanosheets as a capacitive deionization electrode for efficient removal of heavy metal ions from water

2019 ◽  
Vol 7 (6) ◽  
pp. 2919-2919
Author(s):  
Sam Keltie
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Capacitive Deionization ◽  
Efficient Removal ◽  
One Pot ◽  
One Pot Synthesis

Expression of concern for ‘One-pot synthesis of O-doped BN nanosheets as a capacitive deionization electrode for efficient removal of heavy metal ions from water’ by Ming Ming Chen et al., J. Mater. Chem. A, 2017, 5, 17029–17039.

scholarly journals Novel ionic surface imprinting technology: design and application for selectively recognizing heavy metal ions

RSC Advances ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 2431-2440 ◽  
Author(s):  
Fu-Qiang An ◽  
Hu-Fei Li ◽  
Xu-Dong Guo ◽  
Bao-Jiao Gao ◽  
Tuo-Ping Hu ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Adsorption Capacity ◽  
Chemical Stability ◽  
Heavy Metal Ions ◽  
Selectivity Coefficient ◽  
Surface Imprinting ◽  
Technology Design ◽  
Surface Imprinting Technology ◽  
Design And Application

SIPs have good chemical stability and reusability. They could be reused without a significant reduction in adsorption capacity and selectivity coefficient.

Facile one-pot synthesis of highly monodisperse nickel microspheres with raised nickel dots and their adsorption performance for heavy metal ions

2016 ◽  
Vol 45 (23) ◽  
pp. 9704-9711 ◽  
Author(s):  
Yue Teng ◽  
Le Xin Song ◽  
Wei Liu ◽  
Li Zhao ◽  
Juan Xia ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Solvothermal Synthesis ◽  
Heavy Metal Ions ◽  
One Pot ◽  
Adsorption Performance ◽  
One Pot Synthesis ◽  
High Concentrations

Monodispersed Ni microspheres with surfaces uniformly covered by Ni dots were constructed through a facile solvothermal synthesis, showing an improved ability to remove Cd2+ ions even at high concentrations in water.

Adsorption capacity of hydroxyapatite for several amino acids and heavy metal ions

2012 ◽  
Vol 46 (5) ◽  
pp. 292-294 ◽  
Author(s):  
A. S. Berlyand ◽  
A. P. Snyakin ◽  
A. A. Prokopov
Keyword(s):  
Amino Acids ◽  
Heavy Metal ◽  
Metal Ions ◽  
Adsorption Capacity ◽  
Heavy Metal Ions
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