The effect of morphology and size on the photocatalytic properties of MoS2

Hu, Kunhong; Hu, Xian; Yu, Xu; Pan, Xiu Zhi

doi:10.1007/s11144-010-0173-3

Cited by 24 publications

(35 citation statements)

References 35 publications

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“…Polyformaldehyde can decompose on the nano-slices, while it is stable on the nano-balls [21,22]. Methyl orange can remarkably decompose on both nano-balls and nano-slices [26]. It was concluded that LP is easier to decompose on the nano-balls than nano-slices.…”

Section: Xps Characterization Of Wear Scarsmentioning

confidence: 97%

“…However, the Ref. [26] reported that the MoS 2 nano-balls had an excellent catalytic activity in the degradation of organic chemicals. This indicates that the curved basal surface of the nano-ball is intrinsically different from the normal flat basal surface of the layered 2H-MoS 2 .…”

Section: Xps Characterization Of Wear Scarsmentioning

confidence: 99%

“…The high carbon contamination on the friction surface resulted from the decomposing of liquid paraffin on the nano-balls during friction. The nano-slices also have a high activity in degrading organic chemicals such as methyl orange [26]. The different organic chemicals have different decomposing extents on the MoS 2 surface.…”

Section: Xps Characterization Of Wear Scarsmentioning

confidence: 99%

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The Effect of Morphology on the Tribological Properties of MoS2 in Liquid Paraffin

et al. 2010

Tribol Lett

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145

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The tribological properties of liquid paraffin (LP) containing molybdenum disulfide (MoS 2 ) additives, including nano-balls, nano-slices, and bulk 2H-MoS 2 , are evaluated using a four-ball tribometer. Results show that all MoS 2 additives used can improve the tribological properties of LP, and that nanosized MoS 2 particles function as lubrication additives in LP better than micro-MoS 2 particles do. The LP with nano-balls presents the best antifriction and antiwear properties at the MoS 2 content of 1.5 wt%. This is ascribed to the chemical stability of the layerclosed spherical structure of nano-balls. The Stribeck curves confirm that the rotation speed of 1,450 rpm used is located at the mixed lubrication region under 300 N. MoS 2 nano-slices have small sizes and easily enter into the interface of the friction pair with a roughness of 0.032 lm, functioning as a lubricant in LP better than nano-balls do at the MoS 2 content of 1.0 wt%. The Stribeck curves also show that the differences between the two nano samples were magnified at high rotation speeds in hydrodynamic lubrication region. The application of nano-slices in high sliding speeds will be more advantageous. This work furthers the understanding of the relationship between the tribological properties and morphology of MoS 2 .

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Section: Xps Characterization Of Wear Scarsmentioning

confidence: 97%

Section: Xps Characterization Of Wear Scarsmentioning

confidence: 99%

Section: Xps Characterization Of Wear Scarsmentioning

confidence: 99%

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The Effect of Morphology on the Tribological Properties of MoS2 in Liquid Paraffin

et al. 2010

Tribol Lett

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145

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“…However, it can’t absorb visible light and suffers from fast recombination rate of the photogenerated charge carriers8. In order to overcome these drawbacks, numerous investigations have been devoted to give new types of photocatalysts, where two-dimensional (2D) nanomaterials with exotic electronic properties and high specific surface areas are considered to be the good candidates910, as well as, they have attracted tremendous attention in heterogeneous catalysis111213, sensors14, energy storage1516 and electronics171819.…”

mentioning

confidence: 99%

Efficient visible light-induced degradation of rhodamine B by W(NxS1−x)2 nanoflowers

Liu

Zhang

Gao

et al. 2017

Sci Rep

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Here, W(NxS1−x)2 nanoflowers were fabricated by simple sintering process. Photocatalytic activity results indicated our fabricated N-doped WS2 nanoflowers shown outstanding photoactivity of degradating of rhodamine B with visible light. Which is attributed to the high separation efficiency of photoinduced electron–hole pairs, the broadening of the valence band (VB), and the narrowing of energy band gap. Meanwhile, our work provided a novel method to induce surface sulfur vacancies in crystals by introduing impurities atoms for enhancing their photodegradation.

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“…In a previous study, a quick precipitation method was designed to prepare MoS 2 nanoparticles in various shapes [11]. The catalytic properties of the as-prepared nano-MoS 2 were also investigated [12]. TiO 2 has excellent photocatalytic properties for the degradation of unwanted organic compounds in aqueous solution.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and photocatalytic properties of nano-MoS2/AlOOH composite

Cai

Shao

et al. 2011

Reac Kinet Mech Cat

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A MoS 2 /AlOOH composite was synthesized by calcining the reaction product of Na 2 MoO 4 , Na 2 S, HCl and basic Al 2 O 3 . The obtained composite was characterized using thermal analysis, X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy, high-resolution transmission electron microscopy, ultraviolet-visible spectroscopy and infrared spectroscopy. The degradation reaction of methyl orange was used to evaluate the photocatalytic properties of the composite. The results showed that alumina existed in the form of AlOOH with the deposited nano-MoS 2 on the surface. The composite contained an intensive absorption between 380 and 450 nm and presented excellent photocatalytic properties. In addition, the composite still retained a high catalytic activity after repeatedly used for three times. The catalytic activity of the composite was influenced by the initial concentration of methyl orange, the amount of the catalyst, the pH value, and the temperature. The composite was a promising photocatalyst for the removal of organic chemicals from wastewater.

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The effect of morphology and size on the photocatalytic properties of MoS2

Cited by 24 publications

References 35 publications

The Effect of Morphology on the Tribological Properties of MoS2 in Liquid Paraffin

The Effect of Morphology on the Tribological Properties of MoS2 in Liquid Paraffin

Efficient visible light-induced degradation of rhodamine B by W(NxS1−x)2 nanoflowers

Synthesis and photocatalytic properties of nano-MoS2/AlOOH composite

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