Visible light irradiated photocatalytic and magnetic properties of Fe-doped SnS2 nanopowders

Novel Thermal Decomposition Method for the Synthesis of Iron‐doped SnS2 Nanoparticles and Studies on their Peroxidase‐like Activity

“…The factors which cause higher magnetization in Sn 1-x Fe x S 2 nanoparticles compared to pure SnS 2 nanoparticles are intrinsic behaviour, secondary phases of iron and defects such as sulfur vacancies and tin interstitial caused by iron doping in the SnS 2 lattice. [41,45] In the present study, powder XRD results rule out the formation of any impurity phase of iron. The defects formed by the incorporation of iron in the SnS 2 lattice can explain higher magnetization in the Sn 1-x Fe x S 2 nanoparticles.…”

“…Fe doped SnS 2 nanopowders with irregular nanosheet-like morphology has been reported by Huang et al [41] Nanosheet-like morphology in Fe doped SnS 2 has been reported by Li et al [42] Heiba et al have reported Fe doped SnS 2 nanoparticles with cylindrical shape. [43] Nanosized grains of Fe doped SnS 2 have been reported by Srivind et al [45] The EDX patterns of pure SnS 2 and Sn 1-x Fe x S 2 nanoparticles (SF-0.10, SF-0.15, SF-0.20) are shown in Figure S3. The EDX elemental mapping images (Figure S4) indicate uniform distribution of Sn, Fe and S in the Sn 1-x Fe x S 2 nanoparticles.…”

“…The decrease in crystallite size of doped SnS 2 nanoparticles compared to pure SnS 2 nanoparticles has been reported by other authors. [41,44,45] The FT-IR spectra of pure SnS 2 and Sn 1-x Fe x S 2 nanoparticles are depicted in Figure S1. The IR spectra of pure SnS 2 and the doped samples show bands at about 3350, 3147 and 1617 cm À 1 , attributed to asymmetric and symmetric hydroxyl stretching and bending vibration, respectively which indicate that physisorbed water molecules are present in iron doped SnS 2 nanoparticles.…”

“…The defects formed by the incorporation of iron in the SnS 2 lattice can explain higher magnetization in the Sn 1-x Fe x S 2 nanoparticles. [45] However, the antiferromagnetic interaction exhibited by Fe 3 + ions in SF-0.20 with higher iron concentration decreases the magnetization at 300 K and 2 K. [66] The zero field cooled (ZFC) and field cooled (FC) magnetization plots of pure SnS 2 and Sn 1-x Fe x S 2 nanoparticles in the presence of 500 Oe are depicted in Figure S9. The ZFC and FC curves of pure SnS 2 and Sn 1-x Fe x S 2 nanoparticles are not separated from each other and exhibit steep increase in magnetization below 50 K, which indicate paramagnetic behaviour.…”

“…[41,60] The observed ZFC-FC results are in agreement with those reported by Huang et al [41] Till now, only three reports are available in literature on magnetic studies of Sn 1-x Fe x S 2 nanoparticles. [41,42,45] Huang et al have reported weak ferromagnetic behaviour (due to intralayer iron atoms) and enhanced paramagnetic behaviour (due to interlayer iron atoms) on the basis of MÀ H and MÀ T studies for iron doped SnS 2 nanopowders ([Fe] = 0 to 10%) at 5 K. [41] Li et al have reported magnetic measurements on Fe doped SnS 2 monolayer (sheet). [42] Fe 0.021 Sn 0.979 S 2 shows ferromagnetic behaviour with ⊥r anisotropy at 2 K with a T c of about 31 K. At 2 K, Fe 0.015 Sn 0.985 S 2 and Fe 0.011 Sn 0.989 S 2 exhibit ferromagnetic and paramagnetic behaviour, respectively.…”