Structure-enhanced removal of Cr(vi) in aqueous solutions using MoS2 ultrathin nanosheets

2018 ◽  
Vol 42 (11) ◽  
pp. 9006-9015 ◽  
Author(s):  
Huating Sun ◽  
Tianxing Wu ◽  
Yunxia Zhang ◽  
Dickon H. L. Ng ◽  
Guozhong Wang
Keyword(s):  
Aqueous Solutions ◽  
Molybdenum Disulfide ◽  
Synergistic Effects ◽  
Interlayer Spacing ◽  
Ultrathin Nanosheets

Molybdenum disulfide (MoS2) ultrathin nanosheets with enlarged interlayer spacing and defects enables the structure-enhanced removal of Cr(vi), in which the synergistic effects of adsorption and reduction not only captured Cr(vi) from aqueous solutions, but also alleviated the toxicity of chromium to some degree.

scholarly journals In Situ Thermal-Stage Fitted-STEM Characterization of Spherical-Shaped Co/MoS2 Nanoparticles for Conversion of Heavy Crude Oils

Catalysts ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1239
Author(s):  
Manuel Ramos ◽  
Félix Galindo-Hernández ◽  
Brenda Torres ◽  
José Manuel Domínguez-Esquivel ◽  
Martin Heilmaier
Keyword(s):  
Molybdenum Disulfide ◽  
Sodium Molybdate ◽  
Interlayer Spacing ◽  
Scanning Transmission Electron Microscope ◽  
Interplanar Distance ◽  
Scanning Transmission ◽  
Heavy Crude ◽  
C 50 ◽  
Nano Catalysts

We report the thermal stability of spherically shaped cobalt-promoted molybdenum disulfide (Co/MoS2) nano-catalysts from in-situ heating under electron irradiation in the scanning transmission electron microscope (STEM) from room temperature to 550 °C ± 50 °C with aid of Fusion® holder (Protochip©, Inc.). The catalytic nanoparticles were synthesized via a hydrothermal method using sodium molybdate (Na2MoO4·2H2O) with thioacetamide (CH3CSNH2) and cobalt chloride (CoCl2) as promoter agent. The results indicate that the layered molybdenum disulfide structure with interplanar distance of ~0.62 nm remains stable even at temperatures of 550 °C, as observed in STEM mode. Subsequently, the samples were subjected to catalytic tests in a Robinson Mahoney Reactor using 30 g of Heavy Crude Oil (AGT-72) from the golden lane (Mexico’s east coast) at 50 atm using (ultrahigh purity) UHP hydrogen under 1000 rpm stirring at 350 °C for 8 h. It was found that there is no damage on the laminar stacking of Co/MoS2 with temperature, with interlayer spacing remaining at 0.62 nm; these sulfided catalytic materials led to aromatics rise of 22.65% and diminution of asphaltenes and resins by 15.87 and 3.53%, respectively.

Efficient Raman Enhancement in Molybdenum Disulfide by Tuning the Interlayer Spacing

2020 ◽  
Vol 12 (25) ◽  
pp. 28474-28483
Author(s):  
Xuanhua Li ◽  
Shaohui Guo ◽  
Jie Su ◽  
Xingang Ren ◽  
Zheyu Fang
Keyword(s):  
Molybdenum Disulfide ◽  
Interlayer Spacing ◽  
Raman Enhancement

Inter-overlapped MoS2/C composites with large-interlayer-spacing for high-performance sodium-ion batteries

2020 ◽  
Vol 5 (7) ◽  
pp. 1127-1135 ◽  
Author(s):  
Yinghui Wang ◽  
Ya Yang ◽  
Deyang Zhang ◽  
Yangbo Wang ◽  
Xiaoke Luo ◽  
...  
Keyword(s):  
Molybdenum Disulfide ◽  
High Performance ◽  
Interlayer Spacing ◽  
Layered Material ◽  
Sodium Ion ◽  
Great Promise ◽  
Sodium Ion Batteries ◽  
Two Dimensional

As a two-dimensional layered material with a structure analogous to that of graphene, molybdenum disulfide (MoS2) holds great promise in sodium-ion batteries (SIBs).

Antimicrobial activity the extract of Myracrodruon urundeuva Fr. Allemão and your synergistic effects on antibiotic drugs the used clinical

2020 ◽  
Vol 1 (3) ◽  
pp. 01-07
Author(s):  
Vandbergue Santos Pereira ◽  
Mirele Fernandes
Keyword(s):  
Antimicrobial Activity ◽  
Natural Products ◽  
Medicinal Plants ◽  
Aqueous Solutions ◽  
Synergistic Effects ◽  
Herbal Medicines ◽  
Antibiotic Drugs ◽  
Plant Constituents

Medicinal plants are important natural products employed in the development of herbal medicines, which are compositions produced from the mixture of plant constituents, according to specific technical orientations (CRISTO et al., 2016). These products are usually prepared using varied pharmaceutical forms, including capsules, pills, gels, ointments, aqueous solutions, hydroalcoholic solutions and infusions (popularly known as teas) (FALZON; BALABANOVA, 2017).

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