Facile synthesis of novel hierarchical core@shell structural magnetic nanovehicle Fe3O4@ZnAlCe-MoO4-LDHs for carbon steel protection

In this work, a ternary TiO2/Graphene oxide/Polyaniline (TiO2/GO/PANI) nanocomposite was synthesized by in situ oxidation and use as a filler on epoxy resin (TiO2/GO/PANI/EP), a bifunctional in situ protective coating has been developed and reinforced the Q235 carbon steel protection against corrosion. The structure and optical properties of the obtained composites are characterized by XRD, FTIR, and UV–vis. Compared to bare TiO2 and bare Q235, the TiO2/GO/PANI/EP coating exhibited prominent photoelectrochemical properties, such as the photocurrent density increased 0.06 A/cm2 and the corrosion potential shifted from −651 mV to −851 mV, respectively. The results show that the TiO2/GO/PANI nanocomposite has an extended light absorption range and the effective separation of electron-hole pairs improves the photoelectrochemical performance, and also provides cathodic protection to Q235 steel under dark conditions. The TiO2/GO/PANI/EP coating can isolate the Q235 steel from the external corrosive environment, and may generally be regarded a useful protective barrier coating to metallic materials. When the TiO2/GO/PANI composite is dispersed in the EP, the compactness of the coating is improved and the protective barrier effect is enhanced.

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nIn-situ facile synthesis of Superparamagnetic porous core-shell structure for Dye adsorption

Journal of Molecular Structure ◽

10.1016/j.molstruc.2020.129797 ◽

2021 ◽

Vol 1228 ◽

pp. 129797

Author(s):

Ahmad Khajeh Ebrahimi ◽

Iran Sheikhshoaie ◽

Saeideh Salimi ◽

Hassan Arkaban

Keyword(s):

Shell Structure ◽

Dye Adsorption ◽

Core Shell ◽

Facile Synthesis ◽

Porous Core ◽

Core Shell Structure

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MXene Core-Shell Nanosheets: Facile Synthesis, Optical Properties, and Versatile Photonics Applications

Nanomaterials ◽

10.3390/nano11081995 ◽

2021 ◽

Vol 11 (8) ◽

pp. 1995

Author(s):

Yunjia Wang ◽

Shunxiang Liu ◽

Feng Zhu ◽

Yiyu Gan ◽

Qiao Wen

Keyword(s):

Gold Nanoparticles ◽

Research Work ◽

Mode Locking ◽

Single Frequency ◽

Core Shell ◽

Complex Structures ◽

Facile Synthesis ◽

Laser Applications ◽

Saturable Absorbers ◽

Frequency Laser

In recent years, the transition metal carbonitrides(MXenes) have been widely applied to photoelectric field, and better performance of these applications was achieved via MXene complex structures. In our work, we proposed a MXene core-shell nanosheet composed of a Ti2C (MXene) phase and gold nanoparticles, and applied it to mode-locked and single-frequency fiber laser applications. The optoelectronic results suggested that the performances of these two applications were both improved when MXene core-shell nanosheets were applied. As a result, we obtained a mode-locking operation with 670 fs pulses, and the threshold pump power reached to as low as 20 mW. Besides, a single-frequency laser with the narrowest linewidth of ~1 kHz is also demonstrated experimentally. Our research work proved that MXene core-shell nanosheets could be used as saturable absorbers (SAs) to promote versatile photonic applications.

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