Article 2021 · 35 atıf

Dual-Functional Graphene-Based Flexible Material for Membrane Filtration and Electrochemical Sensing of Heavy Metal Ions

Özet

Simultaneous removal and quantification of heavy metal ions are very important since they threaten human health. In this work, a dual-functional, free-standing and flexible reduced graphene oxide (rGO) based paper-like material including zinc oxide nanoparticles (ZnO-NPs) and ethylenediaminetetraaceticacid (EDTA) was produced using successive vacuum-filtration and hydrothermal reduction processes. First, graphene oxide (GO) layers were coated with ZnO-NPs and then EDTA was immobilized by ultrasonic treatment. Prepared GO/ZnO-NPs-EDTA suspension was vacuum-filtrated on a membrane and peeled to obtain GO/ZnO-NPs-EDTA paper. Hydrothermal reduction resulted in rGO/ZnO-NPs-EDTA paper and this material is first-time performed for two applications: Simultaneous removal of heavy metal ions of Cd2+, Pb2+, Cu2+, and Hg2+ and their further simultaneous electrochemical detection. Structural, chemical, crystallographic, optical, morphological, and electrochemical characterization of this paper-like material was executed using numerous techniques. Maximum adsorption performance of the rGO/ZnO-NPs-EDTA paper was determined as 2963, 8056, 600, and 1753 mg/g, while electrochemical simultaneous determination revealed linear ranges of 18.5-500, 22.4-700, 8.3-200, 3.3- for Cd2+, Pb2+, Cu2+, and Hg2+, respectively.

Anahtar Kelimeler

Electrochemical metal sensor dual-functional graphene paper heavy metal removal flexible membrane OXIDE COMPOSITE PAPER ELECTRODE LEAD II REMOVAL EDTA ADSORPTION SHEETS NANOCOMPOSITE PERFORMANCE FABRICATION

WoS Kategorileri

Engineering, Electrical & Electronic Instruments & Instrumentation Physics, Applied

Künye

Dergi: IEEE SENSORS JOURNAL
Yıl: 2021
Cilt: 21
Sayı: 3
Sayfa: 2468-2475
ISSN: 1530-437X
eISSN: 1558-1748
DOI: 10.1109/JSEN.2020.3021988
WoS UID: WOS:000678186800001

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