Facile Synthesis of MoS<sub>2</sub>/CuS Nanosheet Composites as an Efficient and Ultrafast Adsorbent for Water-Soluble Dyes

Tian, Chengxiang; Xi, Xiang; Ji, Wu; Li, Bo; Cai, Chao; Khan, Bilawal; Chen, Hua; Yuan, Yonggang; Zu, Xiaotao

doi:10.1021/acs.jced.8b00593

Cited by 34 publications

(25 citation statements)

References 79 publications

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“…Adsorption separation is worth noticing as an attractive technique for removal of organic dyes from wastewater because of its many advantages such as low cost, simplicity of design, simple operation, operation at ambient temperature and pressure, insensitivity to toxic pollutants, and environment-friendly nature. − Recently, many kinds of solid adsorbent such as graphene, graphene oxide, zeolite, metal–organic frameworks, carbon nanotube, layered double hydroxides, and mesoporous materials have been reported in the field of dye-selective adsorption. ,− …”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Influence of Initial pH, Ionic Strength, and Temperature on the Selective Adsorption of Dyes onto Nanodiamonds

2019

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In the current work, the performance of untreated nanodiamonds (UNDs) and thermally oxidized nanodiamonds (ONDs), as adsorbents for selective adsorption of methylene blue (MB) and methyl orange (MO) from aqueous media, was examined. The adsorption isotherm, initial pH, ionic strength, and thermodynamic study were investigated in batch experiments. The equilibrium adsorption data were analyzed by Langmuir and Freundlich isotherm models, which indicated that the isotherms were well fitted with the Langmuir model for both dyes. Thermodynamic parameters indicated that the adsorption operation was a feasible, spontaneous, and physisorption process in experimental conditions. Meanwhile, the adsorption of MO onto the UND was exothermic and determined by enthalpy change, while the adsorption of MB onto the OND was endothermic and an entropy-controlling process. The adsorption selectivity study exhibited that OND can rapidly and selectively separate cationic MB dye from the MO and MB mixture. On the basis of the negatively charged surface of the OND with highly negative zeta potential, the fact that the OND opted to adsorb MB over MO was firmly dependent on the initial pH value and ionic strength, which suggested that the possible mechanism of adsorption such as electrostatic interaction, hydrogen bonding, and π−π stacking might be important. Finally, based on the mentioned considerations, thermally OND was an attractive candidate for rapid adsorption and separation of cationic dyes from aqueous solution.

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Section: Introductionmentioning

confidence: 99%

Experimental Study on the Influence of Initial pH, Ionic Strength, and Temperature on the Selective Adsorption of Dyes onto Nanodiamonds

2019

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“…The main underlying mechanism for adsorption of CR on such a hierarchical adsorptive structure is assumed to be π-π stacking of the dye molecules on the nanocomposite [168]. MoS 2 /CuS nanosheet composite is another example of the hybrid 2D structures that benefits from a synergistic adsorption capacity, thereby, providing a promising adsorption efficiency for RhB (93.8%), MB (100%), and RhB 6G (84.73%), attributed to its high specific surface area (106.27 m 2 •g −1 ) and small mesopores (2.299 nm) [169]. With respect to the environmental applications of the MoS 2 nanosheets including dye adsorption, the interested readers are referred to an excellent review [170].…”

Section: D Inorganic Nano-adsorbentsmentioning

confidence: 99%

The Nanosized Dye Adsorbents for Water Treatment

Homaeigohar

2020

Nanomaterials

139

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Clean water is a vital element for survival of any living creature and, thus, crucially important to achieve largely and economically for any nation worldwide. However, the astonishingly fast trend of industrialization and population growth and the arisen extensive water pollutions have challenged access to clean water across the world. In this regard, 1.6 million tons of dyes are annually consumed. Thereof, 10%–15% are wasted during use. To decolorize water streams, there is an urgent need for the advanced remediation approaches involving utilization of novel materials and technologies, which are cost and energy efficient. Nanomaterials, with their outstanding physicochemical properties, can potentially resolve the challenge of need to water treatment in a less energy demanding manner. In this review, a variety of the most recent (from 2015 onwards) opportunities arisen from nanomaterials in different dimensionalities, performances, and compositions for water decolorization is introduced and discussed. The state-of-the-art research studies are presented in a classified manner, particularly based on structural dimensionality, to better illustrate the current status of adsorption-based water decolorization using nanomaterials. Considering the introduction of many newly developed nano-adsorbents and their classification based on the dimensionality factor, which has never been employed for this sake in the related literature, a comprehensive review will be presented.

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“…27,32 Furthermore, MoS 2 nanostructures were also modified with other nanomaterials (such as CuS nanosheets and graphene oxide) to enhance the adsorption potential toward targeted pollutants in water. 33,34…”

Section: Introductionmentioning

confidence: 99%

Efficient Removal of Pb(II) and Cd(II) from Industrial Mine Water by a Hierarchical MoS₂/SH-MWCNT Nanocomposite

et al. 2019

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In this study, we investigate the adsorption capability of molybdenum sulfide (MoS 2 )/thiol-functionalized multiwalled carbon nanotube (SH-MWCNT) nanocomposite for rapid and efficient removal of heavy metals [Pb(II) and Cd(II)] from industrial mine water. The MoS 2 /SH-MWCNT nanocomposite was synthesized by acid treatment and sulfurization of MWCNTs followed by a facile hydrothermal reaction technique using sodium molybdate and diethyldithiocarbamate as MoS 2 precursors. Morphological and chemical features of the nanocomposite material were studied using various characterization techniques. Furthermore, the effects of adsorbent (MoS 2 /SH-MWCNT nanocomposite) concentration, contact time, initial concentration of heavy-metal ions, and reaction temperature were examined to determine the efficiency of the adsorption process in batch adsorption experiments. Kinetics and isotherm studies showed that the adsorption process followed pseudo-second-order and Freundlich adsorption isotherm models, respectively. Thermodynamic parameters calculated using van’t Hoff plots show the spontaneity and endothermic nature of adsorption. MoS 2 /SH-MWCNT nanocomposite demonstrates a high adsorption capacity for Pb(II) (90.0 mg g –1 ) and Cd(II) (66.6 mg g –1 ) following ion-exchange and electrostatic interactions. Metal–sulfur complex formation was identified as the key contributor for adsorption of heavy-metal ions followed by electrostatic interactions for multilayer adsorption. Transformation of adsorbent into PbMoO 4– x S x and CdMoO 4– x S x complex because of the adsorption process was confirmed by X-ray diffraction and scanning electron microscopy-energy-dispersive spectrometry. The spent adsorbent can further be used for photocatalytic and electrochemical applications; therefore, the generated secondary byproducts can also be employed for other purposes.

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Facile Synthesis of MoS₂/CuS Nanosheet Composites as an Efficient and Ultrafast Adsorbent for Water-Soluble Dyes

Cited by 34 publications

References 79 publications

Experimental Study on the Influence of Initial pH, Ionic Strength, and Temperature on the Selective Adsorption of Dyes onto Nanodiamonds

Experimental Study on the Influence of Initial pH, Ionic Strength, and Temperature on the Selective Adsorption of Dyes onto Nanodiamonds

The Nanosized Dye Adsorbents for Water Treatment

Efficient Removal of Pb(II) and Cd(II) from Industrial Mine Water by a Hierarchical MoS₂/SH-MWCNT Nanocomposite

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Facile Synthesis of MoS2/CuS Nanosheet Composites as an Efficient and Ultrafast Adsorbent for Water-Soluble Dyes

Cited by 34 publications

References 79 publications

Experimental Study on the Influence of Initial pH, Ionic Strength, and Temperature on the Selective Adsorption of Dyes onto Nanodiamonds

Experimental Study on the Influence of Initial pH, Ionic Strength, and Temperature on the Selective Adsorption of Dyes onto Nanodiamonds

The Nanosized Dye Adsorbents for Water Treatment

Efficient Removal of Pb(II) and Cd(II) from Industrial Mine Water by a Hierarchical MoS2/SH-MWCNT Nanocomposite

Contact Info

Product

Resources

About

Facile Synthesis of MoS₂/CuS Nanosheet Composites as an Efficient and Ultrafast Adsorbent for Water-Soluble Dyes

Efficient Removal of Pb(II) and Cd(II) from Industrial Mine Water by a Hierarchical MoS₂/SH-MWCNT Nanocomposite