In this study, we report a green synthesis of MoS nanosheets (NSs) using a facile hydrothermal technique in the presence of l-cysteine. l-Cysteine can serve as a greener source of sulfur as well as a capping agent to help the growth of MoS nanosheets. The prepared materials were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS), electron transmission microscopy (TEM), X-ray photoelectron microscopy (XPS), and Brunauer, Emmett, and Teller (BET) analysis. The results showed that MoS NSs are of high crystallinity with a lattice spacing of 0.61 nm. The optical bandgap of MoS NSs nanosheets prepared using l-cysteine as a source of sulfur was found to be 1.79 eV. The photocatalytic degradation of MoS NSs towards methylene orange (MO) and rhodamine blue (RB) dyes under sunlight was found to be promising for practical applications. The fast kinetics of degradation of MO and RhB was observed over a wide range of pH range. Moreover, MoS NSs showed excellent antifungal activities against and fungus.
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http://dx.doi.org/10.1039/d1ra03815j | DOI Listing |
Adv Mater
December 2024
Institute of Materials Research, Center of Double Helix, Guangdong Provincial Key Laboratory of Thermal Management Engineering and Materials, Shenzhen Key Laboratory of Advanced Layered Materials for Value-added Applications, Institute of Materials Research, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, P. R. China.
Liquid exfoliation is a scalable and effective method for synthesizing 2D nanosheets (NSs) but often induces contamination and defects. Here, liquid metal gallium (Ga) is used to exfoliate bulk layered materials into 2D NSs at near room temperature, utilizing the liquid surface tension and Ga intercalation to disrupt Van der Waals (vdW) forces. In addition, the process can transform the 2H-phase of transition metal dichalcogenides into the 1T'-phase under ambient conditions.
View Article and Find Full Text PDFACS Appl Mater Interfaces
November 2024
Department of Chemistry, School of Physical and Mathematical Sciences, University of Kerala, Kariavattom Campus, Thiruvananthapuram 695581, Kerala, India.
Sensing caspase-3 activity is essential for understanding the role of apoptosis in cancer dynamics, controlling therapeutic strategies, and improving patient care in cancer treatment. In this study, we demonstrate a highly sensitive recombinant human caspase-3 (rhC3) detection technique in biological fluids. This technique uses a copper nanocluster stabilized with bovine serum albumin (BSA-CuNCs) as a metal-based fluorescent biosensor, conjugated with anti-human caspase-3 (ahC3).
View Article and Find Full Text PDFNanomaterials (Basel)
October 2024
Department of Materials Science & Engineering, Chungnam National University, Daejeon 34134, Republic of Korea.
Sci Rep
September 2024
Department of Advanced Biomedical Sciences, University of Naples, Federico II, Naples, Italy.
Two-dimensional transition metal dichalcogenides, particularly MoS, are interesting materials for many applications in aerospace research, radiation therapy and bioscience more in general. Since in many of these applications MoS-based nanomaterials can be placed in an aqueous environment while exposed to ionizing radiation, both experimental and theoretical studies of their behaviour under these conditions is particularly interesting. Here, we study the effects of tiny imparted doses of 511 keV photons to MoS nanoflakes in water solution.
View Article and Find Full Text PDFInorg Chem
September 2024
College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China.
Here, we report ternary COFs@MoS-Pd hybrids with an innovative self-sacrificial approach. MoO@Covalent organic frameworks (COFs) microcables were first prepared and then two-dimensional MoS nanosheets (NSs) were integrated onto the surface of COFs, as COFs@MoS, after treatment with hydrothermal reaction. The MoS NSs were used as an excellent support to introduce Pd nanoparticles (NPs) thanks to their reducing ability for the formation of the ternary COFs@MoS-Pd hybrids.
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