The 2D-In2S3 nanosheets contained thin films have been employed for the breakdown of organic pollutant solutions such as methylene blue and methyl orange under natural sunlight. UV-DRS studies reveal that as-prepared In2S3 thin film is capable of adsorbing the entire electromagnetic spectrum from the UV to NIR region. X-ray diffraction and Raman spectroscopy results manifest that 2D nanostructured thin film exhibits β-In2S3 phase. Microscopy studies results confirm the existence of assembly of two-dimensional sheets throughout the film. Uniform advanced coating of In2S3 nanosheets over fluorine-doped tinoxide (FTO) substrates with high adhesion properties were achieved at optimum reaction parameters. Nanostructured 2D-In2S3 nanosheets based advanced coating is fabricated by using the hydrothermal method. Recently, 2D-layered nanostructures have aroused huge interest for environmental remediation applications. This work would contribute to developing efficient photoanodes through various nanoscale engineering strategies.

Co ion could facilitate the charge transfer in photoanodes through the increased surface area, and the 2 nm Al2O3 layer coated above the photoanode effectively worked as the passivation layer to stabilize the photoanodes in alkaline electrolytes environments. To further enhance PEC properties, the interficial engineering strategies of the Co ion doping and the deposition of ultra-thin Al2O3 film were carried out. As synthesized photoanodes of In2O3/In2S3 form type II junction, leading to considerable cathodic onset potential shift with the increased photocurrent density compared to pristine samples. Subsequently, the In2S3 layer was conformally coated on In2O3 nanorods through facile chemical bath deposition. Herein, we synthesized In2O3 nanorods on FTO substrate through a direct glancing angle deposition method. Among the various trials to construct effective water splitting semiconductor photoelectrodes, In2O3/In2S3 heterostructures can be promising candidates for their advantageous properties in solar water oxidation. Photoelectrochemical (PEC) water splitting is one of the critical energy conversion techniques to prepare for future energy demands. Diffraction spots are gathered into three circumferences emphasized by different colors, attributed to with the corresponding d-spacing values of 0.32nm (pink) and 0.38nm (yellow), respectively. (b) FFT pattern of hexagonal γ-In 2 S 3 NPL, taken from the zone axis (ZA) from the image in (a). The nanoplatelets discussed offer low-toxicity, optical activity in the UV and visible spectral regimes and an option for electrical or magnetic doping, enabled by the existing voids. Elementary optical properties were identified by absorption and emission measurements.

The structures created were verified by X-ray diffraction, HR-TEM analyses and Raman measurements. All phases were produced by a new colloidal procedure based on a single precursor. Furthermore, the analysis of thermodynamic and kinetic factors indicated a phase transformation from the γ-phase to the β-phase. A long reaction duration time transformed the hexagons/dodecagons into truncated triangular shapes. The results indicated the formation of hexagonal NPLs of the γ-phase at an elevated temperature and dodecagon NPLs of the γ-phase at a lower temperature. In particular, we substantiate the experimental factors (e.g., temperature, reaction duration, and surface ligands) that control the growth progress. The current work deals with colloidal nanoplatelets based on In2S3 compound, focusing on the growth mechanism that leads to the formation of two different phases, trigonal γ-In2S3 and defect-spinel β-In2S3, both stabilized at room temperature and characterized by ordered metal voids. Inorganic two-dimensional semiconductor nanostructures intrigue the scientific community, due to their tunable and sparse electronic states and their high conductivity.

Pushpal khadka