Siloxene: A novel 2D photocatalyst for degradation of dye molecules

Deepak, Nav; Pandey, Abhishek; Shukla, Shobha; Saxena, Sumit

doi:10.1016/j.nanoso.2021.100721

Cited by 12 publications

(8 citation statements)

References 47 publications

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“…XRD in Figure d was used to investigate the structural properties of the samples. The XRD pattern of Siloxene sheets exhibits prominent peaks at 15.2°, 26.7°, 28°, 37.4°, 47.2°, and 55.8°, which can be attributed to the (0 0 1), (1 0 0), (1 1 1), (2 1 0), (2 2 0), and (3 1 1) crystallographic planes, respectively. , These peaks arise from the topochemical transformation of layered calcium disilicide into two-dimensional (2D) silicon sheets [31]. Additionally, there is a peak marked by an asterisk (*), which indicates the presence of common impurities in the sample due to crystalline silicon .…”

Section: Resultsmentioning

confidence: 99%

“…Siloxene nanosheets were synthesized via the deintercalation of Ca 2+ ions from zintl-phase CaSi 2 using 37% hydrochloric acid (HCl), resulting in yellowish-green exfoliated Siloxene nanosheets with evolution of hydrogen gas 3 CaSi 2 + 6 HCl + 3 H 2 normalO → Si 6 H 3 false( OH ) 3 + 3 CaCl 2 + 3 H 2 ↑ 13 …”

Section: Methodsmentioning

confidence: 99%

“…9,12 Notably, prominent examples such as silicene, silicane, polysilane, and siloxene display exceptional electronic, mechanical, and optical characteristics and hold the potential to revolutionize the electronics industry. 13,14 These materials hold great promise for advancements in optoelectronics, catalysis, sensing capabilities, and improvements in energy storage for batteries and supercapacitors. 2 However, utilizing these materials presents challenges, particularly due to the heightened reactivity of sp 3 -bonded Si surfaces, which leads to oxidation concerns during synthesis and integration processes.…”

Section: ■ Introductionmentioning

confidence: 99%

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Synergistic Interaction of Siloxene and Polyaniline Nanocomposite for High-Performance Supercapacitor Electrodes

Deepak,

Kumar,

Sarkar

et al. 2024

Energy Fuels

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Siloxene, a prominent two-dimensional (2D) silicon-based material, has garnered significant attention due to its unique properties. However, its potential for energy storage as a supercapacitor electrode has been constrained by its poor conductivity, nonporosity, and limited charge transport capabilities. In this article, we report the synthesis of siloxene nanocomposites with polyaniline (PANI) to enhance the charge storage ability. The hexagonal 2D lattice structure and stability of siloxene complement the unique charge-transfer characteristics and π−π* transitions of PANI. The integration of PANI in the nanocomposite improves siloxene's charge conduction, and the addition of oxygen functionalities enhances surface reactivity, thereby overcoming the limitations associated with active sites. This synergy creates a nanocomposite electrode with an optimized pore structure for efficient ion diffusion and accessibility. The siloxene-PANI composite exhibited enhanced energy storage with a specific capacitance of 483 F/g (869.4 mF/cm 2 @ 1.8 mA/ cm 2 ). The successfully fabricated asymmetric flexible supercapacitor (SiP4//CAP) delivered an energy density of 46.2 Wh/kg (126 mJ/cm 2 ) at a power density of 501.4 W/kg (0.4 mW/cm 2 ) while exhibiting a cyclic stability of 89.6% and a Coulombic efficiency of 96.8% over 10,000 cycles.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

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Synergistic Interaction of Siloxene and Polyaniline Nanocomposite for High-Performance Supercapacitor Electrodes

Deepak,

Kumar,

Sarkar

et al. 2024

Energy Fuels

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“…A novel 2D material, siloxene, is made of chemical exfoliation of calcium disilicide methylene blue degradation. The increased dye degradation was observed as the concentration of siloxene concentration increased [105] . In the presence of a magnetic field, 2D materials like graphene undergo modified charge separation and migration, enhancing catalytic activity for more efficient dye degradation.…”

Section: Materials Used As a Catalyst For Photocatalytic Degradationmentioning

confidence: 99%

“…The increased dye degradation was observed as the concentration of siloxene concentration increased. [105] In the presence of a magnetic field, 2D materials like graphene undergo modified charge separation and migration, enhancing catalytic activity for more efficient dye degradation. Magneto-optical effects may alter the optical properties of the material, influencing its response to light during photocatalysis.…”

Section: D Materialsmentioning

confidence: 99%

Magnetic Field Effect on Photocatalytic Dye Degradation: A Review

Kumar Manavalan,

Enoch,

Chitra

et al. 2024

ChemistrySelect

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In the present day, photocatalysis has become the primary and most promising technology to generate renewable energy and degrade environmental pollutants. Remarkable efforts have been made to improve photocatalytic efficiency. Among these, introducing an external magnetic field is considered a promising strategy to boost photocatalytic performance. This review explores the dynamic realm of improving photocatalytic efficiency, with a particular emphasis on the strategic integration of external magnetic fields. Examining recent breakthroughs, we reviewed the influence of magnetic fields on diverse catalyst materials, including both magnetic and nonmagnetic variants, 2D materials, and semiconductors. Comprehensive coverage is provided on the mechanisms governing photocatalytic dye degradation, materials utilized for catalysis, and the profound impact of magnetic fields on enhancing reaction kinetics. This review also focuses on recent advances in the application and effect of magnetic fields in the magnetic and nonmagnetic catalysts towards dye degradation. This review provides a forward‐looking view, highlighting the potential of magnetic field‐enhanced photocatalysis to play a central role in sustainable energy and environmental management.

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