scholarly journals Fast and Efficient Removal of Uranium onto a Magnetic Hydroxyapatite Composite: Mechanism and Process Evaluation

Processes ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 1927
Author(s):  
Tao Ou ◽  
Hairong Peng ◽  
Minhua Su ◽  
Qingpu Shi ◽  
Jinfeng Tang ◽  
...  
Keyword(s):  
Crystalline Phase ◽  
Rational Design ◽  
Cobalt Ferrite ◽  
Hydrothermal Process ◽  
Maximum Adsorption Capacity ◽  
Efficient Removal ◽  
Hydroxyapatite Composite ◽  
Main Crystalline Phase ◽  
Short Time ◽  
Facile Hydrothermal Process

The exploration and rational design of easily separable and highly efficient sorbents with satisfactory capability of extracting radioactive uranium (U)-containing compound(s) are of paramount significance. In this study, a novel magnetic hydroxyapatite (HAP) composite (HAP@ CoFe2O4), which was coupled with cobalt ferrite (CoFe2O4), was rationally designed for uranium(VI) removal through a facile hydrothermal process. The U(VI) ions were rapidly removed using HAP@ CoFe2O4 within a short time (i.e., 10 min), and a maximum U(VI) removal efficiency of 93.7% was achieved. The maximum adsorption capacity (Qmax) of the HAP@CoFe2O4 was 338 mg/g, which demonstrated the potential of as-prepared HAP@CoFe2O4 in the purification of U(VI) ions from nuclear effluents. Autunite [Ca(UO2)2(PO4)2(H2O)6] was the main crystalline phase to retain uranium, wherein U(VI) was effectively extracted and immobilized in terms of a relatively stable mineral. Furthermore, the reacted HAP@CoFe2O4 can be magnetically recycled. The results of this study reveal that the suggested process using HAP@CoFe2O4 is a promising approach for the removal and immobilization of U(VI) released from nuclear effluents.

scholarly journals Rational design of asymmetric supercapacitors via a hierarchical core–shell nanocomposite cathode and biochar anode

RSC Advances ◽  
2019 ◽  
Vol 9 (72) ◽  
pp. 42543-42553 ◽  
Author(s):  
Meiqing Fan ◽  
Xu Zeng ◽  
Xiaodong Yang ◽  
Xin Zhang ◽  
Bo Ren
Keyword(s):  
Rational Design ◽  
Hydrothermal Process ◽  
Core Shell ◽  
Asymmetric Supercapacitors ◽  
Facile Hydrothermal Process

Hierarchical MnO2 nanosheets standing on hollow NiO microspheres have been designed by a facile hydrothermal process. Furthermore, asymmetric supercapacitors via core/shell NiO/MnO2 cathode and biochar anode were assembled.

Rational design and preparation of few-layered MoSe2 nanosheet@C/TiO2 nanobelt heterostructures with superior lithium storage performance

RSC Advances ◽  
2016 ◽  
Vol 6 (28) ◽  
pp. 23161-23168 ◽  
Author(s):  
Hanshuo Wu ◽  
Yuxin Wu ◽  
Xi Chen ◽  
Yongjin Ma ◽  
Mingquan Xu ◽  
...  
Keyword(s):  
Rational Design ◽  
Hydrothermal Process ◽  
Lithium Storage ◽  
Storage Performance ◽  
Facile Hydrothermal Process

A heterostructure of MoSe2 nanosheets decorated on C/TiO2 nanobelts was successfully fabricated through a facile hydrothermal process with the assistance of glucose.

Enhanced photocatalytic activity of Bi25FeO40–Bi2WO6 heterostructures based on the rational design of the heterojunction interface

RSC Advances ◽  
2016 ◽  
Vol 6 (31) ◽  
pp. 26038-26044 ◽  
Author(s):  
Lei Zhang ◽  
Yue Zou ◽  
Jian Song ◽  
Cheng-Ling Pan ◽  
Shao-Ding Sheng ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Rational Design ◽  
Hydrothermal Process ◽  
Facile Hydrothermal Process

Based on the rational design of heterojunction interface, a novel and efficient Bi25FeO40–Bi2WO6 heterostructure photocatalyst was successfully constructed by a facile hydrothermal process.

scholarly journals Synthesis and characterization of Cu(OH)2-NWs-PVA-AC Nano-composite and its use as an efficient adsorbent for removal of methylene blue

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sivarama Krishna Lakkaboyana ◽  
Khantong Soontarapa ◽  
Nabel Kalel Asmel ◽  
Vinay Kumar ◽  
Ravi Kumar Marella ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Kinetic Models ◽  
Batch Reactor ◽  
Maximum Adsorption Capacity ◽  
Nano Composite ◽  
Adsorption Processes ◽  
Intra Particle Diffusion ◽  
Short Time ◽  
Efficient Adsorbent

AbstractThe present study focused on the synthesis of copper hydroxide nanowires decorated on activated carbon (Cu(OH)2-NWs-PVA-AC). The obtained Cu(OH)2-NWs-PVA-AC Nano-composite was distinguished by XRD, SEM, EDX, BET, FTIR and XPS respectively. Besides, different variables such as solution pH, and initial dye concentration, contact time, and temperature were performed on the adsorption efficiency of MB in a small batch reactor. Further, the experimental results are analyzed by various kinetic models via PFO, PSO, intra-particle diffusion and Elovich models, and the results revealed that among the kinetic models, PSO shows more suitability. In addition, different adsorption isotherms were applied to the obtained experimental data and found that Langmuir–Freundlich and Langmuir isotherm were best fits with the maximum adsorption capacity of 139.9 and 107.6 mg/g, respectively. The Nano-composite has outstanding MB removal efficiency of 94–98.5% with a span of 10 min. and decent adsorption of about 98.5% at a pH of 10. Thermodynamic constants like Gibbs free energy, entropy, and enthalpy were analyzed from the temperature reliance. The results reveal the adsorption processes are spontaneous and exothermic in nature. The high negative value of ΔG° (− 44.11 to − 48.86 kJ/mol) and a low negative value of ΔH° (− 28.96 kJ/mol) show the feasibility and exothermic nature of the adsorption process. The synthesized dye was found to be an efficient adsorbent for the potential removal of cationic dye (methylene blue) from wastewater within a short time.

Rational Design of Ultra-Short Anodic Alumina Nanotubes by Short-Time Pulse Anodization

2015 ◽  
Vol 154 ◽  
pp. 379-386 ◽  
Author(s):  
Ye Wang ◽  
Abel Santos ◽  
Andreas Evdokiou ◽  
Dusan Losic
Keyword(s):  
Rational Design ◽  
Anodic Alumina ◽  
Short Time ◽  
Time Pulse

Morphological control of RGO/CdS hydrogels for energy storage

CrystEngComm ◽  
2016 ◽  
Vol 18 (7) ◽  
pp. 1090-1095 ◽  
Author(s):  
Xueyu Zhang ◽  
Xin Ge ◽  
Shihan Sun ◽  
Yuanduo Qu ◽  
Wenzhong Chi ◽  
...  
Keyword(s):  
Energy Storage ◽  
Hydrothermal Process ◽  
Morphology Control ◽  
Electrochemical Energy Storage ◽  
Morphological Control ◽  
3D Structures ◽  
Facile Hydrothermal Process ◽  
Electrochemical Energy

This paper investigated the preparation of 3D RGO/CdS hydrogels by a facile hydrothermal process, the morphology control of CdS (ball-like, rod-like, needle-like) in 3D structures, and their application in electrochemical energy storage.

scholarly journals Peanut-Like Hematite Prepared by a New Facile Hydrothermal Process for Removal of As(V)

2018 ◽  
Vol 25 (1) ◽  
pp. 23-30
Author(s):  
Chengjin Zhang ◽  
Shaoyi Jia ◽  
Songhai Wu ◽  
Yong Liu
Keyword(s):  
Hydrothermal Process ◽  
Facile Hydrothermal Process

2D vanadium doped manganese dioxides nanosheets for pseudocapacitive energy storage

Nanoscale ◽  
2015 ◽  
Vol 7 (38) ◽  
pp. 16094-16099 ◽  
Author(s):  
Zhimi Hu ◽  
Xu Xiao ◽  
Liang Huang ◽  
Chi Chen ◽  
Tianqi Li ◽  
...  
Keyword(s):  
Energy Storage ◽  
Hydrothermal Process ◽  
Facile Hydrothermal Process

This work demonstrates the successful growth of 2D V-doped MnO2 nanosheets by facile hydrothermal process, which offers great potential for energy storage.

Sign in / Sign up

Export Citation Format

Share Document