2D black phosphorus dotted with silver nanoparticles: An excellent lubricant additive for tribological applications

Tang, Gongbin; Su, Fenghua; Xu, Xing; Chu, Paul K.

doi:10.1016/j.cej.2019.123631

Cited by 136 publications

(65 citation statements)

References 46 publications

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“…As a new type of 2D layered nanomaterial, black phosphorus (BP) has attracted considerable attention because it has promising applications in tribology owing to its excellent physicochemical and mechanical properties [16,17]. Seminal works have demonstrated that BP and its composites are useful as lubricant additives and can provide excellent lubricating effects owing to their superior properties [18][19][20][21][22][23]. However, BPbased materials are not frequently used as waterbased lubricant additives owing to their low dispersion stability in water.…”

Section: Introductionmentioning

confidence: 99%

Black phosphorus quantum dots: A new-type of water-based high-efficiency lubricant additive

et al. 2020

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Black phosphorus quantum dots (BPQDs), obtained via a typical solution-based top-down method, were used as water-based lubricant additives. BPQDs exhibited remarkable friction reduction and anti-wear properties even at the ultra-low concentration of 0.005 wt%, which reduced the friction coefficient and wear volume of the base liquid by 32.3% and 56.4%, respectively. In addition, the load-supporting capacity of the base liquid increased from 120 N to over 300 N. BPQDs-based additives exhibited a relatively long lifetime at a relatively high load of 80 N. The performance of BPQDs considerably exceeded that of the BP; this may be attributed to their small and uniform particle size, good dispersion stability in water, and high reactivity at the frictional surfaces. The results of the surface wear resistance analysis demonstrated that a robust tribochemical film with a thickness of approximately 90 nm was formed on the rubbing surface lubricated with 0.005 wt% of BPQDs dispersion. Moreover, the film served as a direct evidence of the excellent tribological performance of BPQDs.

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Section: Introductionmentioning

confidence: 99%

Black phosphorus quantum dots: A new-type of water-based high-efficiency lubricant additive

et al. 2020

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“…These values are reduced by 68.9% and 97.1% lower than those of pure PPESK, respectively. This is because g-C 3 N 4 and Ag nanoparticles are additives with intrinsically good lubricating features [41,42]. Consequently, these additives have a good friction-reducing effect on the PPESK matrix.…”

Section: Thermal Properties Of Ppesk Composite Film With G-c 3 N 4 /Agmentioning

confidence: 99%

Mono-dispersed Ag nanoparticles decorated graphitic carbon nitride: An excellent lubricating additive as PPESK composite film

Chen

Zhang

et al. 2021

Friction

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Studies show that two dimensional (2D) nanomaterial and its hybrid have a great promise in tribology for the special laminar microstructure. However, the majority of performed investigations about 2D graphitic carbon nitride (g-C3N4) nanosheets are most focused on energy storage, catalysis, adsorption, rarely tribology. In the present study, g-C3N4 supporting mono-dispersed Ag nanoparticle hybrid (g-C3N4/Ag) is prepared, and its microstructure and chemical composition are determined. More specifically, the tribological performance as the lubricating additive of poly phthalazinone ether sulfone ketone (PPESK) composite is investigated using the ball-on-disc friction tester. Moreover, the corresponding enhancement mechanism is well proposed based on the experimental analysis and theoretical simulation. Obtained results show that Ag nanoparticles with a size of about 10–20 nm are homogeneously anchored on g-C3N4 nanosheets, favoring for good compatibility between g-C3N4/Ag and PPESK. It is found that when 0.3 wt% of g-C3N4/Ag is added to PPESK, the friction coefficient and wear rate of PPESK decrease by 68.9% and 97.1%, respectively. These reductions are mainly attributed to the synergistic self-lubricating effect of Ag nanoparticles and g-C3N4 nanosheet, the formation of transfer film, as well as the limited effect of g-C3N4/Ag on the shear deformation of PPESK composite film. Furthermore, it is found that the proposed g-C3N4/Ag-PPESK composite still keeps reasonable friction-reducing and wear-resistant properties under heavy loads and high rotating speeds. The present study demonstrates that the proposed g-C3N4/Ag hybrid is an excellent lubricating additive for polymer composites.

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“…Among the highly potential nanomaterials for combining with TiO 2 and GO, silver nanoparticles (AgNPs) emerged as a reasonable choice due to their fascinating conductivity, cat-alytic properties, and antibacterial activity. AgNPs have been picked as ideal metallic nanoparticles for decorating on many kinds of surfaces: wires [36], gels [37], or sheets [38]. Such assemblage enhanced the properties of precursory materials and expanded significantly their applications.…”

Section: Introductionmentioning

confidence: 99%

Gamma Irradiation-Assisted Synthesis of Silver Nanoparticle-Embedded Graphene Oxide-TiO2 Nanotube Nanocomposite for Organic Dye Photodegradation

Nguyen

2021

Journal of Nanomaterials

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In this work, silver nanoparticle- (AgNP-) embedded graphene oxide- (GO-) TiO2 nanotube (TNT) nanocomposite (labelled GAT) was successfully synthesized by gamma ray radiolysis. The influence of irradiation process, including one-step and two-step assistances and at different irradiation doses (5, 10, 15, 20, and 25 kGy), on the GAT’s physicochemical properties was achieved. Structure and properties of irradiated materials were analyzed by Fourier-transformed infrared (FT-IR), ultraviolet-visible absorption (UV-Vis), and Raman spectroscopies; X-ray diffraction (XRD); and scanning electron (SEM) and transmission electron (TEM) microscopies. In addition, selective scavengers of e-aq and ⋅OH radicals were used to investigate the radiolytic synthesis of GAT nanocomposite. It was revealed that gamma ray irradiation could strongly support the relation of the composite synthesis. Furthermore, the synthesized GAT nanocomposites showed a significant effect for Rhodamine B (RhB) photodecomposition after 60 minutes of natural sunlight exposure and evaluation by UV-Vis absorption spectroscopy. Briefly, the obtained results highlighted the potential of gamma irradiation as a “clean” and controllable way for synthesizing beneficial nanocomposite materials for wastewater purification and other environmental aspects.

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2D black phosphorus dotted with silver nanoparticles: An excellent lubricant additive for tribological applications

Cited by 136 publications

References 46 publications

Black phosphorus quantum dots: A new-type of water-based high-efficiency lubricant additive

Black phosphorus quantum dots: A new-type of water-based high-efficiency lubricant additive

Mono-dispersed Ag nanoparticles decorated graphitic carbon nitride: An excellent lubricating additive as PPESK composite film

Gamma Irradiation-Assisted Synthesis of Silver Nanoparticle-Embedded Graphene Oxide-TiO2 Nanotube Nanocomposite for Organic Dye Photodegradation

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