Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 10, Issue 21, Pages 18316-18326Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b03379
Keywords
FeS; carboxyl-functionalized ferroferric oxide; Cr(VI); Cd(II); remove
Funding
- National Natural Science Foundation of China [21407151]
- Youth Innovation Promotion Association of Chinese Academy of Sciences [2015385]
- Chinese Academy of Sciences [KSZD-EW-Z-022-05]
- Science and Technology Service Programs of Chinese Academy of Sciences [KFJ-STS-ZDTP-002, KFJ-SW-STS-143]
- Science and Technology Major Project of Anhui Province [17030701051]
- Environmental Protection Department of Anhui Province [2017-04]
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In In this work, a novel nanosystem with a sandwich-like structure was synthesized via face-to-face combination of two pieces of waste cotton fabrics (CFs) carrying ferrous sulfide (FeS) and carboxyl-functionalized ferroferric oxide microsphere (CFFM), respectively, and the obtained nanosystem was named as FeS/CFFM/CF. Therein, FeS has high reduction and adsorption capabilities for hexavalent chromium (Cr(VI)), CFFM possesses a high adsorption ability on cadmium ion (Cd(II)) through electrostatic attraction and chelation, and CF displays high immobilization ability for FeS and CFFM and adsorption performance on Cd(II). FeS/CFFM/CF could simultaneously remove Cr(VI) and Cd(II) from water and inhibit the uptake of Cr and Cd by fish and water spinach, ensuring the food safety. Besides, this technology could efficiently control the migration of Cr(VI) and Cd(II) in the sand-soil mixture, which was favorable to prevent their wide diffusion. Importantly, FeS/CFFM/CF possessed a high flexibility and could be conveniently produced with needed scale and shape and easily separated from water and soil, displaying a promising approach to remediate Cr(VI)-/Cd(II)contaminated water and soil and a huge application potential.
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