3D Nanoarchitecture of Polyaniline-MoS2 Hybrid Material for Hg(II) Adsorption Properties

Abstract

We report the facile hydrothermal synthesis of polyaniline (PANI)-modified molybdenum disulfide (MoS2) nanosheets to fabricate a novel organic–inorganic hybrid material. The prepared 3D nanomaterial was characterized by field emission scanning electron microscopy, high-resolution transmission electron microscopy, energy-dispersive X-ray spectroscopy and X-ray diffraction studies. The results indicate the successful synthesis of PANI–MoS2 hybrid material. The PANI–MoS2 was used to study the extraction and preconcentration of trace mercury ions. The experimental conditions were optimized systematically, and the data shows a good Hg(II) adsorption capacity of 240.0 mg g−1 of material. The adsorption of Hg(II) on PANI–MoS2 hybrid material may be attributed to the selective complexation between the–S ion of PANI–MoS2 with Hg(II). The proposed method shows a high preconcentration limit of 0.31 µg L−1 with a preconcentration factor of 640. The lowest trace Hg(II) concentration, which was quantitatively analyzed by the proposed method, was 0.03 µg L−1. The standard reference material was analyzed to determine the concentration of Hg(II) to validate the proposed methodology. Good agreement between the certified and observed values indicates the applicability of the developed method for Hg(II) analysis in real samples. The study suggests that the PANI–MoS2 hybrid material can be used for trace Hg(II) analyses for environmental water monitoring.

Organic–Inorganic Hybrid Materials II: Some Additional Contributions to the Topic

“…The work by Alsame et al [ 9 ] is focused on an ease hydrothermal synthesis of polyaniline (PANI)-modified molybdenum disulfide (MoS2) nanosheets employed to obtain a novel 3D organic–inorganic hybrid material. An exhaustive characterization of the obtained material by using field emission scanning electron microscopy, high-resolution transmission electron microscopy, energy-dispersive X-ray spectroscopy and X-ray diffraction studies led the authors to conclude that the obtaining procedure of the organic–inorganic hybrid material (PANI–MoS 2 ) was successful.…”

Development of a Rapid Tool for Metal Injection Molding Using Aluminum-Filled Epoxy Resins

“…However, the inherent limitations of an injection molding tool fabricated with Al-filled epoxy resin include their low mechanical properties and heat transfer capability compared with STAVAX stainless steel [41]. These limitations can further be improved by adding copper powders [42,43], molybdenum disulfide [44][45][46][47], zirconia ceramics [48,49], or silicon nitride ceramics [50][51][52][53] particles in the mixture. These issues are currently being investigated, and the results will be presented in a later study.…”

Design and fabrication of intracellular therapeutic cargo delivery systems based on nanomaterials: current status and future perspectives

“…Nowadays, metal hydroxides are excellent candidates for drug delivery in view of their porous structure with large surface active sites, as well as complete degradation in acidic environments. 318,319 For example, Liao et al developed H-MnFe(OH)x nanocapsules with hollow structures of about 90 nm in size by selecting silica NPs as hard templates for the in situ growth of MnFe(OH)x, which could accommodate a variety of therapeutic drugs. 320 In vivo experiments showed that Mn 2+ /Fe 3+ released from nanocapsule could effectively catalyze the breakdown of H 2 O 2 to O 2 in the tumor microenvironment, thus significantly improving the efficacy of PDT/chemotherapy synergistic treatment.…”