Effective and rapid adsorption of uranium via synergy of complexation and cation-π interaction

2022 ◽  
Author(s):  
Yan Wang ◽  
Xiaolin Liu ◽  
Yingrong Xie ◽  
Bowei Chen ◽  
Yong Zhang
Keyword(s):  
Rapid Adsorption

Rapid adsorption of phosphorus at low concentration from water using a novel green organometallic material EGCG-Fe

2021 ◽  
Vol 9 (5) ◽  
pp. 106242
Author(s):  
Rong Zhang ◽  
Yu Fan ◽  
Lijun Wang ◽  
Jie Li ◽  
Hui Li ◽  
...  
Keyword(s):  
Low Concentration ◽  
Rapid Adsorption

New network polymer functionalized magnetic-mesoporous nanoparticle for rapid adsorption of Hg(II) and sequential efficient reutilization as a catalyst

2021 ◽  
Vol 259 ◽  
pp. 118112
Author(s):  
Yong Fu ◽  
Yu Sun ◽  
Yutong Zheng ◽  
Jinwen Jiang ◽  
Chengyue Yang ◽  
...  
Keyword(s):  
Network Polymer ◽  
Rapid Adsorption

Mesoporous hierarchical ZrO2@rice straw-derived SiO2 nanocomposite for rapid adsorption and sunlight-driven photocatalytic degradation of methylene blue

2021 ◽  
pp. 113758
Author(s):  
Mohamed M. Motawea ◽  
Mohamed A.T. Hussein ◽  
Mohamed M. Elsenety ◽  
Hazim M. Ali ◽  
Tarek A. Seaf El-Nasr ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Degradation ◽  
Rice Straw ◽  
Rapid Adsorption

The interaction of oxygen with clean metal surfaces

1955 ◽  
Vol 227 (1170) ◽  
pp. 387-399 ◽  
Keyword(s):  
Oxide Layer ◽  
Oxygen Adsorption ◽  
Single Site ◽  
Rate Expression ◽  
Hydrogen Form ◽  
Metal Atoms ◽  
Kinetics Of ◽  
Clean Metal ◽  
Cu And Zn ◽  
Rapid Adsorption

Isobars for the adsorption of O 2 , H 2 and CO on evaporated films of Rh, Mo, W and Fe, of Ch and CO on Ta, Pt and Pd, and of O 2 on Cu, Al and Zn have been obtained. On Rh, Mo and W the rapid adsorption of O 2 and H 2 at -183° C results in formation of monolayers with one atom per surface atom. On Ta, Pt, Pd, Cu, Al and Zn oxygen, and on Fe hydrogen form similar monolayers, but on Fe oxygen forms several layers of oxide. On Rh, Mo and possibly Ta the fast CO chemisorption corresponds to a two-site mechanism; on W and Fe it lies between that for a single and a two-site mechanism; on Pt and Pd single-site adsorption may take place. Kinetics of slow oxygen uptakes have been followed on Rh, Mo, W, Ta, Fe, Cu and Zn. With Rh, Mo, W, Ta and Zn it is believed that formation of the first oxide layer has been observed, and the rate expression is velocity ∝√{ p ) e -∝ v / RT , where v is the adsorbed volume and ∝ is a constant. The suggested mechanism is interchange of adsorbed oxygen atoms with underlying metal atoms, whereby metal atoms are exposed for further oxygen adsorption. On Cu and Fe formation of up to six and ten oxide layers respectively have been observed, and the rate expressions (u ∝ p 0.75 / v 2 and u ∝ p 0.2 e ∝'/ v ) have been interpreted in terms of the theory of Cabrera & Mott (1948).

scholarly journals Synergistic effect of carboxyl and sulfate groups for effective removal of radioactive strontium ion in a Zr-metal-organic framework

2021 ◽  
Author(s):  
Lin Ren ◽  
Xudong Zhao ◽  
Baosheng Liu ◽  
Hongliang Huang
Keyword(s):  
Adsorption Capacity ◽  
High Efficiency ◽  
Metal Organic Framework ◽  
Maximum Adsorption Capacity ◽  
Potential Candidate ◽  
Dual Groups ◽  
Metal Organic ◽  
Strontium Ion ◽  
Rapid Adsorption ◽  
Organic Framework

Abstract Rapid removal of radioactive strontium from nuclear wastewater is of great significance for environment safety and human health. This work reported the effective adsorption of strontium ion in a stable dual-group metal-organic framework, Zr6(OH)14(BDC-(COOH)2)4(SO4)0.75 (Zr-BDC-COOH-SO4), which contains strontium-chelating groups (-COOH and SO4) and strongly ionizable group (-COOH). Zr-BDC-COOH-SO4 exhibits very rapid adsorption kinetics (<5 min) and a maximum adsorption capacity of 67.5 mg g−1. The adsorption behaviors can be well evaluated by pseudo-second-order model and Langmuir isotherm model. Further investigations indicate that the adsorption of Sr2+ in Zr-BDC-COOH-SO4 would not be interfered by solution pH and adsorption temperature obviously. Feasible regeneration of the adsorbent was also demonstrated through a simple elution method. Mechanism investigation suggests that free -COOH contributes to the rapid adsorption based on electrostatic interaction while introduction of -SO4 can enhance the adsorption capacity largely. Thus, these results suggest that Zr-BDC-COOH-SO4 might be a potential candidate for Sr2+ removal and introducing dual groups is an effective strategy for designing high-efficiency adsorbents.

A new decavanadate polyoxovanadate nanocluster: synthesis, characterization and rapid adsorption of methylene blue

2017 ◽  
Vol 70 (17) ◽  
pp. 2940-2949 ◽  
Author(s):  
Hadi Naslhajian ◽  
Mojtaba Amini ◽  
S. Morteza F. Farnia ◽  
Ayda Sheykhi ◽  
Onur Şahin ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Rapid Adsorption

A new cucurbit[6]uril based supramolecular assembly for sensing small organic solvents and rapid adsorption of Reactive Blue 19 Dye

2018 ◽  
Vol 90 ◽  
pp. 78-81 ◽  
Author(s):  
Penghui Zhang ◽  
Xu Gao ◽  
Mei Liu ◽  
Liubo Liang ◽  
Jun Wang ◽  
...  
Keyword(s):  
Organic Solvents ◽  
Supramolecular Assembly ◽  
Reactive Blue 19 ◽  
Rapid Adsorption

A novel hybrid of β-cyclodextrin grafted onto activated carbon for rapid adsorption of naphthalene from aqueous solution

2018 ◽  
Vol 255 ◽  
pp. 160-167 ◽  
Author(s):  
Xiufang He ◽  
Zhansheng Wu ◽  
Zhonghai Sun ◽  
Xinhui Wei ◽  
Zhilin Wu ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Rapid Adsorption
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