A new magnetic nanocomposite for selective detection and removal of trace copper ions from water

2015 ◽  
Vol 3 (3) ◽  
pp. 1265-1271 ◽  
Author(s):  
Xun Qiu ◽  
Najun Li ◽  
Shun Yang ◽  
Dongyun Chen ◽  
Qingfeng Xu ◽  
...  
Keyword(s):  
Removal Efficiency ◽  
Copper Ions ◽  
Simultaneous Detection ◽  
High Capacity ◽  
Magnetic Nanocomposite ◽  
Core Shell ◽  
Selective Detection

A new core–shell structured magnetic nanocomposite (SDMA) was successfully prepared for simultaneous detection and removal of trace Cu2+. In this facile strategy, the new nanocomposites could detect and adsorb trace Cu2+from water with high capacity and good removal efficiency.

Detection of 3,4-diaminotoluene based on Sr0.3Pb0.7TiO3/CoFe2O4 core/shell nanocomposite via an electrochemical approach

2020 ◽  
Vol 44 (19) ◽  
pp. 7941-7953 ◽  
Author(s):  
Ali B. Abou Hammad ◽  
Amir Elzwawy ◽  
A. M. Mansour ◽  
M. M. Alam ◽  
Abdullah M. Asiri ◽  
...  
Keyword(s):  
Electrochemical Sensor ◽  
Sol Gel ◽  
Magnetic Nanocomposite ◽  
Core Shell ◽  
Selective Detection ◽  
Gel Method ◽  
Sol Gel Method ◽  
Electrochemical Approach

We reported a scalable sol–gel method for the preparation of Sr0.3Pb0.7TiO3/CoFe2O4 core–shell magnetic nanocomposite with a finely controlled shell and evaluated its efficiency as an electrochemical sensor for the selective detection of 3,4-diaminotoluene.

A Bright Nitrogen-doped-Carbon-Dots based Fluorescent Biosensor for Selective Detection of Copper Ions

2021 ◽  
Vol 5 (1) ◽  
pp. 84-92
Author(s):  
Shuting Chen ◽  
Chaoqun Chen ◽  
Jian Wang ◽  
Fang Luo ◽  
Longhua Guo ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Copper Ions ◽  
Selective Detection ◽  
Nitrogen Doped ◽  
Fluorescent Biosensor ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

scholarly journals The Efficacy of Whole Oyster Shells for Removing Copper, Zinc, Chromium, and Cadmium Heavy Metal Ions from Stormwater

2021 ◽  
Vol 13 (8) ◽  
pp. 4184
Author(s):  
Zhiying Xu ◽  
Caterina Valeo ◽  
Angus Chu ◽  
Yao Zhao
Keyword(s):  
Surface Area ◽  
Hexavalent Chromium ◽  
Removal Efficiency ◽  
Exposure Time ◽  
Food Waste ◽  
Positive Relationship ◽  
Copper Ions ◽  
Zinc Ions ◽  
Cadmium Ions ◽  
Initial Concentration

This research investigates the use of a common food waste product for removing four different types of metals typically found in stormwater. Whole, unprocessed oyster shells are explored for use in stormwater management infrastructure that addresses water quality concerns. The role of the shells’ surface area, exposure time, and the solution’s initial concentration on the removal efficiency were examined. Beaker scale experimental results demonstrated very good efficiency by the oyster shells for removing copper ions (80–95%), cadmium ions (50–90%), and zinc ions (30–80%) but the shells were not as effective in removing hexavalent chromium (20–60%). There was a positive relationship between initial concentration and removal efficiency for copper and zinc ions, a negative relationship for hexavalent chromium, and no relationship was found for cadmium ions. There was also a positive relationship between surface area and removal efficiency, and exposure time and removal efficiency. However, after a certain exposure time, the increase in removal efficiency was negligible and desorption was occasionally observed. A mid-scale experiment to mimic real-world conditions was conducted in which continuous inflow based on a 6-h design storm was applied to 2.7 kg of whole, unprocessed oyster shells. The shells provided an 86% and an 84% removal efficiency of cadmium and copper ions, respectively, in one day of hydraulic retention time. No removal was observed for hexavalent chromium, and zinc ion removal was only observed after initial leaching. This work has significant implications for sustainable stormwater infrastructure design using a material commonly found in municipal food waste.

Flexible all-solid-state fiber-shaped Ni–Fe batteries with high electrochemical performance

2019 ◽  
Vol 7 (2) ◽  
pp. 520-530 ◽  
Author(s):  
Qiulong Li ◽  
Qichong Zhang ◽  
Chenglong Liu ◽  
Juan Sun ◽  
Jiabin Guo ◽  
...  
Keyword(s):  
Energy Storage ◽  
Solid State ◽  
Electrochemical Performance ◽  
High Capacity ◽  
Core Shell ◽  
Next Generation ◽  
Energy Storage Devices ◽  
Storage Devices

The fiber-shaped Ni–Fe battery takes advantage of high capacity of hierarchical CoP@Ni(OH)2 NWAs/CNTF core–shell heterostructure and spindle-like α-Fe2O3/CNTF electrodes to yield outstanding electrochemical performance, demonstrating great potential for next-generation portable wearable energy storage devices.

Core-Shell Ge@Graphene@TiO2Nanofibers as a High-Capacity and Cycle-Stable Anode for Lithium and Sodium Ion Battery

2015 ◽  
Vol 26 (7) ◽  
pp. 1104-1111 ◽  
Author(s):  
Xiaoyan Wang ◽  
Ling Fan ◽  
Decai Gong ◽  
Jian Zhu ◽  
Qingfeng Zhang ◽  
...  
Keyword(s):  
High Capacity ◽  
Sodium Ion ◽  
Core Shell ◽  
Sodium Ion Battery

Seed-assisted synthesis of Co3O4@α-Fe2O3 core–shell nanoneedle arrays for lithium-ion battery anode with high capacity

RSC Advances ◽  
2014 ◽  
Vol 4 (26) ◽  
pp. 13241 ◽  
Author(s):  
Yongsong Luo ◽  
Dezhi Kong ◽  
Jingshan Luo ◽  
Yanlong Wang ◽  
Deyang Zhang ◽  
...  
Keyword(s):  
Lithium Ion Battery ◽  
High Capacity ◽  
Lithium Ion ◽  
Core Shell ◽  
Battery Anode
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