Highly efficient and selective recovery of Au(III) from a complex system by molybdenum disulfide nanoflakes

Feng, Biao; Yao, Chengzhang; Chen, Siyu; Luo, Rui; Liu, Shuhui; Tong, Shanshan

doi:10.1016/j.cej.2018.05.130

Cited by 99 publications

(33 citation statements)

References 36 publications

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“…Nanomaterials possess these properties and also have extremely high surface energy, rich inner space, as well as additional interactions (hydrogen‐bond, π‐π, electrostatic and hydrophobic force) . As adsorbents or extraction materials, nanomaterials have exhibited strong adsorption capacity for organic pollutants and metal ions . Jiang investigated the adsorption of estrogen contaminants on graphene nanosheets with different reduction degree .…”

Section: Introductionmentioning

confidence: 99%

Diamond nanoparticles coating for in‐tube solid‐phase microextraction to detect polycyclic aromatic hydrocarbons

Feng

Wang

et al. 2018

J of Separation Science

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Diamond nanoparticles were coated onto stainless steel wires as a extraction material, then it was filled into a poly(ether ether ketone) tube for in‐tube solid‐phase microextraction. Coupled with high‐performance liquid chromatography, the extraction tube was evaluated with different types of analytes including polycyclic aromatic hydrocarbons, estrogens and plasticizers. As the coating, diamond nanoparticles exhibited greater extraction capacity for hydrophobic analytes. Several polycyclic aromatic hydrocarbons were used as model analytes, four main extraction and desorption factors were optimized, including sampling volume, sampling rate, methanol content in sample and desorption time. A sensitive analysis method was established with wide linear range (0.016–20 μg/L), good correlation coefficients (0.9991–0.9997), low limits of detection (0.005–0.020 μg/L), low limits of quantitation (0.016–0.070 μg/L) and high enrichment factors (305‐2396). Relative standard deviations for intra‐ and interday were less than 2.4% (n = 3) and 8.4% (n = 3), respectively. Durability and chemical stability were satisfactory with relative standard deviations less than 7.9% (n = 3). Finally, the method has been successfully applied to the detection of polycyclic aromatic hydrocarbons in real samples.

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Section: Introductionmentioning

confidence: 99%

Diamond nanoparticles coating for in‐tube solid‐phase microextraction to detect polycyclic aromatic hydrocarbons

Feng

Wang

et al. 2018

J of Separation Science

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“…While inner layer chemical complexation may substantially reduce the negative surface charge of MoS 2 and render electrostatic attraction a minor adsorption mechanism [121,137], the latter interaction can still play a significant role in the adsorption of HMs, especially with those that are unable of complexing with MoS 2 [123]. Even with HMs capable of forming complexes with MoS 2 , electrostatic attraction can explain the experimental adsorption capacities that are higher than the theoretical values.…”

Section: Molybdenum Sulfidesmentioning

confidence: 88%

“…MoS 2 has a significant number of available adsorption sites due to its peculiar 2D structure and excess of exposed sulfur atoms and hence has an excellent HM ion removal capacity in water [9,121,123,126,128,130,137,139]. The same sorbent material having different synthetic techniques exhibits different sorption performance for the same adsorbate since the sorbent will have different characteristics such as structures, morphologies, adsorption sites, and thicknesses.…”

Section: Molybdenum Sulfidesmentioning

confidence: 99%

Aqueous Adsorption of Heavy Metals on Metal Sulfide Nanomaterials: Synthesis and Application

Kromah

Zhang

2021

Water

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Heavy metals pollution of aqueous solutions generates considerable concerns as they adversely impact the environment and health of humans. Among the remediation technologies, adsorption with metal sulfide nanomaterials has proven to be a promising strategy due to their cost-effective, environmentally friendly, surface modulational, and amenable properties. Their excellent adsorption characteristics are attributed to the inherently exposed sulfur atoms that interact with heavy metals through various processes. This work presents a comprehensive overview of the sequestration of heavy metals from water using metal sulfide nanomaterials. The common methods of synthesis, the structures, and the supports for metal sulfide nano-adsorbents are accentuated. The adsorption mechanisms and governing conditions and parameters are stressed. Practical heavy metal remediation application in aqueous media using metal sulfide nanomaterials is highlighted, and the existing research gaps are underscored.

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“…O dissulfeto de molibdênio é carregado negativamente, o que facilita a atração de metais pesados carregados positivamente. Entretanto, a contribuição desta forma de adsorção tende a ficar menor quando se compara com a complexação química, visto que a superfície do MoS2 ficaria saturada por íons dos metais pesados reduzindo a eficiência de adsorção (Feng et al, 2018).…”

Section: Mecanismo De Adsorçãounclassified

Compostos à base de molibdênio para remediação ambiental: uma revisão

Filho

2021

RSD

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O dissulfeto de molibdênio é um material amplamente utilizado para remediação ambiental tendo em vista sua excelente capacidade de adsorção, que é atribuída principalmente aos sítios ativos de enxofre na superfície do MoS2. Além disso, este material possui vantagens quando comparado com outros fotocatalisadores, como por exemplo por alta atividade fotocatalítica, baixa toxicidade e boa capacidade de remoção de contaminantes orgânicos e inorgânicos. Nesta revisão apresentaremos os diferentes métodos de preparação do dissulfeto de molibdênio a partir da esfoliação mecânica, química, eletroquímica e os métodos hidrotérmico, solvotérmico e de deposição de vapor químico. Abordaremos ainda suas propriedades tais como as capacidades de adsorção para diferentes tipos de metais pesados em solução, os tipos de degradação fotocatalítica a partir da comparação dos adsorventes a base de MoS2 com outros adsorventes, os mecanismos de adsorção e os fatores que afetam esse processo, como o pH e temperatura da solução, tempo de contato, tipos de contaminantes e a influência de outros íons presentes em solução que podem atrapalhar o processo de adsorção. Outro processo a ser reportado se refere à associação entre o MoS2 e outros compostos, como óxido de grafeno e compostos derivados do nitrogênio, óxido de titânio e associações com bismuto e prata, tendo como principal vantagem o aumento da capacidade de adsorção do material. Como conclusão, será tratado sobre a eficiência de remoção das diferentes associações do dissulfeto de molibdênio frente aos diferentes tipos de contaminantes assim como os diversos fatores que influenciam nesta eficiência.

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Highly efficient and selective recovery of Au(III) from a complex system by molybdenum disulfide nanoflakes

Cited by 99 publications

References 36 publications

Diamond nanoparticles coating for in‐tube solid‐phase microextraction to detect polycyclic aromatic hydrocarbons

Diamond nanoparticles coating for in‐tube solid‐phase microextraction to detect polycyclic aromatic hydrocarbons

Aqueous Adsorption of Heavy Metals on Metal Sulfide Nanomaterials: Synthesis and Application

Compostos à base de molibdênio para remediação ambiental: uma revisão

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