» Articles » PMID: 29167474

Tuning the Composition and Structure of Amorphous Molybdenum Sulfide/Carbon Black Nanocomposites by Radiation Technique for Highly Efficient Hydrogen Evolution

Overview
Journal Sci Rep
Specialty Science
Date 2017 Nov 24
PMID 29167474
Citations 4
Authors
Affiliations
Soon will be listed here.
Abstract

Amorphous molybdenum sulfide/carbon black (MoS/C) nanocomposites are synthesized by a facile one-step γ-ray radiation induced reduction process. Amorphous MoS shows better intrinsic activity than crystalline MoS. And the composition and amorphous structure of MoS could be expediently tuned by absorbed dose for excellent catalytic activity. Meanwhile, the addition of carbon black leads to a significant decrease of charge transfer resistance and increase of active sites of MoS/C composite. Consequently, MoS/C nanocomposite shows Pt-like catalytic activity towards hydrogen evolution reaction (HER), which requires an onset over potential of 40 mV and over potential of 76 mV to achieve a current density of 10 mA cm, and the corresponding Tafel slope is 48 mV decade. After 6000 CV cycles, the catalytic activity of MoS/C shows no obvious decrease. However, when platinum (Pt) foil is used as counter electrode, MoS/C composite show better catalytic activity abnormally after long-term cycling tests. The dissolution of Pt was observed in HER and the Pt dissolution mechanism is elucidated by further analyzing the surface composition of after-cycling electrodes, which offers highly valuable guidelines for using Pt electrode in HER.

Citing Articles

Enhancement of Peroxydisulfate Activation for Complete Degradation of Refractory Tetracycline by 3D Self-Supported MoS/MXene Nanocomplex.

Song Y, Chen R, Li S, Yu S, Ni X, Fang M Nanomaterials (Basel). 2024; 14(9).

PMID: 38727380 PMC: 11085324. DOI: 10.3390/nano14090786.


Synthesis and Sensing Performance of Chitin Fiber/MoS Composites.

Zhang Y, Wu Z, Sun J, Sun Q, Chen F, Zhang M Nanomaterials (Basel). 2023; 13(9).

PMID: 37177112 PMC: 10180960. DOI: 10.3390/nano13091567.


Transition Metal Chalcogenides as a Versatile and Tunable Platform for Catalytic CO and N Electroreduction.

Giuffredi G, Asset T, Liu Y, Atanassov P, Di Fonzo F ACS Mater Au. 2023; 1(1):6-36.

PMID: 36855615 PMC: 9888655. DOI: 10.1021/acsmaterialsau.1c00006.


Wool-Based Carbon Fiber/MoS Composite Prepared by Low-Temperature Catalytic Hydrothermal Method and Its Application in the Field of Gas Sensors.

Xia Y, Wu Z, Qin Z, Chen F, Lv C, Zhang M Nanomaterials (Basel). 2022; 12(7).

PMID: 35407223 PMC: 9000424. DOI: 10.3390/nano12071105.

References
1.
Lu X, Lin Y, Dong H, Dai W, Chen X, Qu X . One-Step Hydrothermal Fabrication of Three-dimensional MoS Nanoflower using Polypyrrole as Template for Efficient Hydrogen Evolution Reaction. Sci Rep. 2017; 7:42309. PMC: 5307311. DOI: 10.1038/srep42309. View

2.
Lee C, Yun J, Lee S, Jo S, Eom K, Lee D . Bi-axial grown amorphous MoS bridged with oxygen on r-GO as a superior stable and efficient nonprecious catalyst for hydrogen evolution. Sci Rep. 2017; 7:41190. PMC: 5247739. DOI: 10.1038/srep41190. View

3.
Guo X, Ji J, Jiang Q, Zhang L, Ao Z, Fan X . Few-Layered Trigonal WS Nanosheet-Coated Graphite Foam as an Efficient Free-Standing Electrode for a Hydrogen Evolution Reaction. ACS Appl Mater Interfaces. 2017; 9(36):30591-30598. DOI: 10.1021/acsami.7b06613. View

4.
Lv R, Robinson J, Schaak R, Sun D, Sun Y, Mallouk T . Transition metal dichalcogenides and beyond: synthesis, properties, and applications of single- and few-layer nanosheets. Acc Chem Res. 2014; 48(1):56-64. DOI: 10.1021/ar5002846. View

5.
Topalov A, Katsounaros I, Auinger M, Cherevko S, Meier J, Klemm S . Dissolution of platinum: limits for the deployment of electrochemical energy conversion?. Angew Chem Int Ed Engl. 2012; 51(50):12613-5. PMC: 3556695. DOI: 10.1002/anie.201207256. View