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Title: Amidoxime-Functionalized Macroporous Carbon Self-Refreshed Electrode Materials for Rapid and High-Capacity Removal of Heavy Metal from Water

Abstract

Heavy metal pollution continues to be one of the most serious environmental problems which has attracted major global concern. Here, a rapid, high-capacity, yet economical strategy for deep cleaning of heavy metals ions in water is reported based on amidoxime-functionalized macroporous carbon electrode materials. The active sites of our material can be self-refreshed during the electrochemical removal process, which is different from traditional methods. The novel filter device in this work can purify contaminated water very rapidly (3000 L h–1 m–2), and can decrease heavy metal ion concentrations to below 5 ppb with a very short contact time (only 3 s). The original treatment efficiency of the device can be retained even after 1 week of continuous device operation. An extremely high removal capacity of over 2300 mg g–1 can be achieved with 2–3 orders of magnitude higher efficiency than that of surface adsorption-based commercial filters without any decay. Additionally, the cost of energy consumed in our method is lower than $6.67 × 10–3 per ton of wastewater. We envision that this approach can be routinely applied for the rapid, efficient, and thorough removal of heavy metals from both point-of-use water and industrial wastewater.

Authors:
ORCiD logo [1];  [1];  [1];  [1];  [1]; ORCiD logo [1];  [1]; ORCiD logo [1]; ORCiD logo [2]
  1. Stanford Univ., CA (United States)
  2. Stanford Univ., CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1529381
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
ACS Central Science
Additional Journal Information:
Journal Volume: 5; Journal Issue: 4; Journal ID: ISSN 2374-7943
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Wu, Tong, Liu, Chong, Kong, Biao, Sun, Jie, Gong, Yongji, Liu, Kai, Xie, Jin, Pei, Allen, and Cui, Yi. Amidoxime-Functionalized Macroporous Carbon Self-Refreshed Electrode Materials for Rapid and High-Capacity Removal of Heavy Metal from Water. United States: N. p., 2019. Web. doi:10.1021/acscentsci.9b00130.
Wu, Tong, Liu, Chong, Kong, Biao, Sun, Jie, Gong, Yongji, Liu, Kai, Xie, Jin, Pei, Allen, & Cui, Yi. Amidoxime-Functionalized Macroporous Carbon Self-Refreshed Electrode Materials for Rapid and High-Capacity Removal of Heavy Metal from Water. United States. https://doi.org/10.1021/acscentsci.9b00130
Wu, Tong, Liu, Chong, Kong, Biao, Sun, Jie, Gong, Yongji, Liu, Kai, Xie, Jin, Pei, Allen, and Cui, Yi. Thu . "Amidoxime-Functionalized Macroporous Carbon Self-Refreshed Electrode Materials for Rapid and High-Capacity Removal of Heavy Metal from Water". United States. https://doi.org/10.1021/acscentsci.9b00130. https://www.osti.gov/servlets/purl/1529381.
@article{osti_1529381,
title = {Amidoxime-Functionalized Macroporous Carbon Self-Refreshed Electrode Materials for Rapid and High-Capacity Removal of Heavy Metal from Water},
author = {Wu, Tong and Liu, Chong and Kong, Biao and Sun, Jie and Gong, Yongji and Liu, Kai and Xie, Jin and Pei, Allen and Cui, Yi},
abstractNote = {Heavy metal pollution continues to be one of the most serious environmental problems which has attracted major global concern. Here, a rapid, high-capacity, yet economical strategy for deep cleaning of heavy metals ions in water is reported based on amidoxime-functionalized macroporous carbon electrode materials. The active sites of our material can be self-refreshed during the electrochemical removal process, which is different from traditional methods. The novel filter device in this work can purify contaminated water very rapidly (3000 L h–1 m–2), and can decrease heavy metal ion concentrations to below 5 ppb with a very short contact time (only 3 s). The original treatment efficiency of the device can be retained even after 1 week of continuous device operation. An extremely high removal capacity of over 2300 mg g–1 can be achieved with 2–3 orders of magnitude higher efficiency than that of surface adsorption-based commercial filters without any decay. Additionally, the cost of energy consumed in our method is lower than $6.67 × 10–3 per ton of wastewater. We envision that this approach can be routinely applied for the rapid, efficient, and thorough removal of heavy metals from both point-of-use water and industrial wastewater.},
doi = {10.1021/acscentsci.9b00130},
journal = {ACS Central Science},
number = 4,
volume = 5,
place = {United States},
year = {2019},
month = {3}
}

Journal Article:
Free Publicly Available Full Text
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Citation Metrics:
Cited by: 15 works
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Figures / Tables:

Scheme 1 Scheme 1: (a) The contaminated water vertically passes through the electrified polymer-modified carbon felt, and directly exits as drinkable water. (b) Schematic of heavy metal ions removal: ① Migration of metal ions by electric field. ② Capture of metal ions by functional groups. ③ Metal ion reduction. ④ Active sitemore » refreshment. (c) The chelation mode of amidoxime with metal ions.« less

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