Facile colorimetric assay for trinitrotoluene based on the intrinsic peroxidase-like activity of MoS2 nanosheets

2017 ◽  
Vol 9 (20) ◽  
pp. 2939-2946 ◽  
Author(s):  
Yan Wang ◽  
Yi He ◽  
Rufang Peng ◽  
Shijin Chu
Keyword(s):  
Aqueous Solution ◽  
Molybdenum Disulfide ◽  
Colorimetric Assay ◽  
Mos2 Nanosheets ◽  
Molybdenum Disulfide Nanosheets

In this study, a facile colorimetric assay for 2,4,6-trinitrotoluene (TNT) in aqueous solution is developed based on the intrinsic peroxidase-like activity of cysteine protected molybdenum disulfide nanosheets (Cys-MoS2 NSs).

scholarly journals Synthesis of MoS2 nanosheets for mercury speciation analysis by HPLC-UV-HG-AFS

RSC Advances ◽  
2018 ◽  
Vol 8 (33) ◽  
pp. 18364-18371 ◽  
Author(s):  
Xingsu Gao ◽  
Jiayong Dai ◽  
Hongyan Zhao ◽  
Jun Zhu ◽  
Lan Luo ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Molybdenum Disulfide ◽  
Solid Phase ◽  
Speciation Analysis ◽  
Mercury Speciation ◽  
Phase Extraction ◽  
Mos2 Nanosheets ◽  
Ultra Trace ◽  
Molybdenum Disulfide Nanosheets ◽  
As Solid Phase

As-synthesized few-layered molybdenum disulfide nanosheets were used as solid-phase extraction absorbent for ultra-trace mercury speciation analysis by HPLC-UV-HG-AFS.

Ultralow Concentration of Amphiphilic Molybdenum Disulfide Nanosheets for Enhanced Oil Recovery-Research and Field Application

2021 ◽  
Author(s):  
Ming Qu ◽  
Tuo Liang ◽  
Jirui Hou ◽  
Weipeng Wu ◽  
Yuchen Wen ◽  
...  
Keyword(s):  
Contact Angle ◽  
Molybdenum Disulfide ◽  
Solid Surface ◽  
Oil Recovery ◽  
Production Performance ◽  
Core Flooding ◽  
Mos2 Nanosheets ◽  
Ultralow Concentration ◽  
Oil Water ◽  
Molybdenum Disulfide Nanosheets

Abstract Recently, spherical nanoparticles have been studied to enhance oil recovery (EOR) worldwide due to their remarkable properties. However, there is a lack of studies of nanosheets on EOR. In this work, we synthesize the amphiphilic molybdenum disulfide nanosheets through a straightforward hydrothermal method. The octadecyl amine (ODA) molecules were grafted onto the surfaces of molybdenum disulfide nanosheets due to the presence of active sites over the surfaces of MoS2 nanosheets. The synthesized amphiphilic molybdenum disulfide nanosheets (ODA-MoS2 nanosheets) are approximate 67 nm in width and 1.4 nm in thickness. The effects of ultralow concentration ODA-MoS2 nanosheets on the dynamic wettability change of solid surfaces and emulsion stability were also studied and discussed. Besides, the core flooding experiments were also conducted to reveal the adsorption rules and the oil displacement effects of ultralow concentration ODA-MoS2 nanosheets. Experimental results indicate that the oil-wet solid surface (a contact angle of 130°) can transform into the neutral-wet solid surface (a contact angle of 90°) within 120 hrs after 50 mg/L ODA-MoS2 nanosheets treatment. In addition, micro-scale emulsions in size of 2 µm can be formed after the addition of ODA-MoS2 nanosheets by adsorbing onto the oil-water interfaces. The desorption energy of a single ODA-MoS2 nanosheet from the oil-water interface to the bulk phase is proposed. When the concentration of ODA-MoS2 nanosheets is 50 mg/L, the emulsions are the most stable. Core flooding results demonstrate that the ultimate residue of ODA-MoS2 nanosheets in porous media is less than 11%, and the highest increased oil recovery of around 16.26% is achieved. Finally, the production performance of ultralow concentration of ODA-MoS2 nanofluid (50 mg/L) in the application of Daqing Oilfield is summarized and discussed.

scholarly journals DNA-driven dynamic assembly of MoS2 nanosheets

2021 ◽  
Author(s):  
Giuseppe Amoroso ◽  
Andrei Sapelkin ◽  
Qingyu Ye ◽  
Vicente Araullo-Peters ◽  
Alessandro Cecconello ◽  
...  
Keyword(s):  
Molybdenum Disulfide ◽  
Mos2 Nanosheets ◽  
Dynamic Assembly ◽  
Molybdenum Disulfide Nanosheets

We demonstrate a strategy to drive the assembly of molybdenum disulfide nanosheets and their disassembly in response to different stimuli.

Use of molybdenum disulfide nanosheets embellished nanoiron for effective capture of chromium (VI) ions from aqueous solution

2018 ◽  
Vol 259 ◽  
pp. 376-383 ◽  
Author(s):  
Yuling Zhu ◽  
Yang Jin ◽  
Kaikai Chang ◽  
Zhongshan Chen ◽  
Xue Li ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Molybdenum Disulfide ◽  
Chromium Vi ◽  
Molybdenum Disulfide Nanosheets

scholarly journals Sonochemical edge functionalisation of molybdenum disulfide

Nanoscale ◽  
2019 ◽  
Vol 11 (33) ◽  
pp. 15550-15560 ◽  
Author(s):  
Aline Amorim Graf ◽  
Matthew J. Large ◽  
Sean P. Ogilvie ◽  
Yuanyang Rong ◽  
Peter J. Lynch ◽  
...  
Keyword(s):  
Molybdenum Disulfide ◽  
Boiling Point ◽  
Molybdenum Oxides ◽  
High Quality ◽  
Molybdenum Disulfide Nanosheets

We demonstrate the spontaneous edge functionalisation of molybdenum disulfide nanosheets exfoliated in acetone. Formation of molybdenum oxides explains the observed high-quality and stability of the dispersion in a low boiling point solvent.

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