Design of NiCo2O4 nanoparticles decorated N, S co-doped reduced graphene oxide composites for electrochemical simultaneous detection of trace multiple heavy metal ions and hydrogen evolution reaction

Pang, Jianxiang; Fu, Haihai; Kong, Wenwen; Jiang, Rong; Ye, Jiahui; Zhao, Zehua; Hou, Juan; Sun, Kaisheng; Zheng, Yang; Chen, Long

doi:10.1016/j.cej.2021.133854

Cited by 57 publications

(22 citation statements)

References 70 publications

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“…Although the rapid growth of industrial demand has promoted economic development, it is accompanied by a series of environmental problems, which threaten human health . Among them, water pollution is becoming more and more serious due to heavy metal ions (HMIs), which were known as the “the world’s number one killer” . HMIs, such as Cd 2+ and Pb 2+ , are hard to biodegrade and easily accumulated in organisms through biological chains, posing an invisible threat to human health and the environment .…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Electrochemical Detection of Cd²⁺ and Pb²⁺ Based on an MOF-Derived Carbon Composite Linked with Multiwalled Carbon Nanotubes

Zhao

Long

et al. 2023

ACS Sustainable Chem. Eng.

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Heavy metal ion (HMI) pollution is a serious threat to human health and the ecosystem. Therefore, there is an urgent need to develop a fast and sensitive platform for heavy metal ion detection. In this work, a novel sensing platform based on ZIF-67-derived cobalt/nitrogen-doped carbon (NC) composite polyhedrons linked with multiwalled carbon nanotubes (MWCNTs), termed Co@NC/MWCNT, for the simultaneous monitoring of Cd2+ and Pb2+ was established. In detail, nanoporous ZIF-67 was first in situ grown on the MWCNTs, followed by carbonization, endowing the composite with good electrical conductivity and a large specific surface area, providing more active sites for subsequent metal ion attachment. Under optimal parameters, the proposed sensing platform exhibited a relatively wider linear range of 0.12–2.5 μM, with lower limits of detection (LODs) of 4.5 nM (Cd2+) and 4.9 nM (Pb2+). Notably, it was worth mentioning that the linearity of the as-prepared sensing platform in the actual water sample was highly consistent with the linearity in the buffer solution, showing outstanding anti-interference performance. Finally, the designed sensing platform performed well in several kinds of natural water environment when compared with the standard method, demonstrating huge potential in trace HMI monitoring.

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Section: Introductionmentioning

confidence: 99%

Simultaneous Electrochemical Detection of Cd²⁺ and Pb²⁺ Based on an MOF-Derived Carbon Composite Linked with Multiwalled Carbon Nanotubes

Zhao

Long

et al. 2023

ACS Sustainable Chem. Eng.

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“…NiCo 2 O 4 is a typical transition metal oxide with a spinel structure, which has the advantages of low cost, good conductivity, high content, and excellent stability . NiCo 2 O 4 has attracted much attention in the field of catalysis on account of its unique, bimetallic element synergistic effect, , controllable morphological properties, tunable band gap, and good electron transfer properties compared to single oxides . According to research reports, NiCo 2 O 4 with superior electrochemical performance has been rarely studied in the field of PEC immunosensor.…”

Section: Introductionmentioning

confidence: 99%

Novel Photoelectrochemical Biosensing Platform Based on a Double Type II CdLa₂S₄/SnIn₄S₈/Sb₂S₃ Ternary Heterojunction as Photoactive Materials and NiCo₂O₄ Nanospheres as a Photoquencher for CA19-9 Detection

et al. 2022

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A novel signal-off biosensing platform based on the CdLa2S4/SnIn4S8/Sb2S3 heterojunction as photoactive materials and NiCo2O4 nanospheres as a photoquencher was developed to achieve the sensitive detection of CA19-9. First, the narrow band gap hydrangea-like CdLa2S4/SnIn4S8/Sb2S3 not only provided excellent photocurrent response but also supplied a mass of active sites that facilitated the loading of capture antibody (Ab1). Second, a double type II CdLa2S4/SnIn4S8/Sb2S3 heterojunction promoted the fast separation and migration of photogenerated e–/h+ and overcame the problem of short carrier lifetime caused by the recombination of photogenerated carriers. In addition, to improve the sensitivity of the constructed sensor to detect CA19-9, signal tags (p-type NiCo2O4) with large steric hindrance were introduced to accomplish signal amplification by the effect of double signal quenching. On one hand, NiCo2O4, which was strongly responsive to visible light, utilized its own advantages to compete for AA with CdLa2S4/SnIn4S8/Sb2S3, resulting in a decrease in the hole scavenging rate of the substrate. On the other hand, the photoquencher NiCo2O4 also prevented AA from contacting the matrix and further aggravated the photoelectrochemical (PEC) signal-damping effect. The PEC immunosensor was prepared with brilliant selectivity and splendid stability to detect CA19-9 (0.001–50 U/mL), and the detection limit was 0.0004 U/mL (S/N = 3).

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“…To probe the kinetics process of HER, the Tafel plots of these electrocatalysts are shown in Figure b: Fe-BDC (128.99 mV dec –1 ), MgFe-BDC (119.03 mV dec –1 ), ZnFe-BDC (160.26 mV dec –1 ), CdFe-BDC (108.71 mV dec –1 ), and Pt/C (51.94 mV dec –1 ). The CdFe-MOF electrocatalyst exhibits a relatively small Tafel slope, indicating that the CdFe-MOF electrode has an excellent HER kinetic rate . The EIS plots are matched with an equivalent circuit model in Figure c.…”

Section: Resultsmentioning

confidence: 98%

Structural and Electronic Modulation of Iron-Based Bimetallic Metal–Organic Framework Bifunctional Electrocatalysts for Efficient Overall Water Splitting in Alkaline and Seawater Environment

Luo

Yang

et al. 2022

ACS Appl. Mater. Interfaces

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Metal–organic frameworks (MOFs) are considered potential electrocatalysts for efficient water splitting. However, the structure–activity relationship of most MOFs is not systematically analyzed for electrocatalysis for anodes and cathodes. In this paper, we provide a strategy to modulate the electronic microstructure of iron-based bimetallic MOFs (MFe-BDC (M: Mg, Zn, Cd)) grown on the nickel foam (NF) as bifunctional electrocatalysts for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). The optimal bimetallic CdFe-BDC via modulating appropriate metal cations of IIA and IIB possesses excellent OER and HER performance with the lowest overpotentials of 290 mV at 100 mA cm–2 and 148 mV at 10 mA cm–2, respectively. The overall water splitting performance of the as-prepared CdFe-BDC requires 1.68 V to achieve a current density of 10 mA cm–2 in the real seawater media, and it exhibits the competitive H2 and O2 production rates of 6.4 and 3.1 μL s–1, respectively, in ambient alkaline conditions, suggesting its potential practical applications. Density functional theory (DFT) calculations demonstrate the relationship between microstructure and electrocatalytic performance of bimetallic MFe-BDC. This work emphasizes the significance of tailoring the electronic microstructure of bimetallic MOFs for efficient overall water splitting in alkaline and seawater environment.

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Design of NiCo2O4 nanoparticles decorated N, S co-doped reduced graphene oxide composites for electrochemical simultaneous detection of trace multiple heavy metal ions and hydrogen evolution reaction

Cited by 57 publications

References 70 publications

Simultaneous Electrochemical Detection of Cd²⁺ and Pb²⁺ Based on an MOF-Derived Carbon Composite Linked with Multiwalled Carbon Nanotubes

Simultaneous Electrochemical Detection of Cd²⁺ and Pb²⁺ Based on an MOF-Derived Carbon Composite Linked with Multiwalled Carbon Nanotubes

Novel Photoelectrochemical Biosensing Platform Based on a Double Type II CdLa₂S₄/SnIn₄S₈/Sb₂S₃ Ternary Heterojunction as Photoactive Materials and NiCo₂O₄ Nanospheres as a Photoquencher for CA19-9 Detection

Structural and Electronic Modulation of Iron-Based Bimetallic Metal–Organic Framework Bifunctional Electrocatalysts for Efficient Overall Water Splitting in Alkaline and Seawater Environment

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Design of NiCo2O4 nanoparticles decorated N, S co-doped reduced graphene oxide composites for electrochemical simultaneous detection of trace multiple heavy metal ions and hydrogen evolution reaction

Cited by 57 publications

References 70 publications

Simultaneous Electrochemical Detection of Cd2+ and Pb2+ Based on an MOF-Derived Carbon Composite Linked with Multiwalled Carbon Nanotubes

Simultaneous Electrochemical Detection of Cd2+ and Pb2+ Based on an MOF-Derived Carbon Composite Linked with Multiwalled Carbon Nanotubes

Novel Photoelectrochemical Biosensing Platform Based on a Double Type II CdLa2S4/SnIn4S8/Sb2S3 Ternary Heterojunction as Photoactive Materials and NiCo2O4 Nanospheres as a Photoquencher for CA19-9 Detection

Structural and Electronic Modulation of Iron-Based Bimetallic Metal–Organic Framework Bifunctional Electrocatalysts for Efficient Overall Water Splitting in Alkaline and Seawater Environment

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Simultaneous Electrochemical Detection of Cd²⁺ and Pb²⁺ Based on an MOF-Derived Carbon Composite Linked with Multiwalled Carbon Nanotubes

Simultaneous Electrochemical Detection of Cd²⁺ and Pb²⁺ Based on an MOF-Derived Carbon Composite Linked with Multiwalled Carbon Nanotubes

Novel Photoelectrochemical Biosensing Platform Based on a Double Type II CdLa₂S₄/SnIn₄S₈/Sb₂S₃ Ternary Heterojunction as Photoactive Materials and NiCo₂O₄ Nanospheres as a Photoquencher for CA19-9 Detection