Abstract

Tris(N-methylbenzyldithiocarbamato)iron(III) complex was used to prepare iron sulfide (FeS) nanocrystals, FeS1 at 120, FeS2 at 180 and FeS3 at 240 °C. P-XRD revealed that the nanocrystals FeS1 and FeS2 are in hexagonal pyrrhotite, Fe₉S₁₀, crystalline phase whereas FeS3 nanocrystal is in pyrrhotite-6C, Fe₁₁S₁₂, crystalline phase. TEM images showed nanocrystals with an average diameter of 5.42 and 25.07 nm for FeS1 and FeS2, respectively, while cluster of iron sulfide with an average particle size of 6.40 nm was obtained for FeS3. The optical band gaps obtained from the Tauc plots are 3.90, 3.90 and 3.96 eV for FeS1, FeS2 and FeS3 nanocrystals, respectively, which indicate blue shifts ascribed to quantum confinement.

摘要

三（Ñ -methylbenzyldithiocarbamato）铁（III）络合物被用于制备硫化铁（FES）的纳米晶体，铁S1在120，的FeS 2在180和FeS 3在240℃下。P-XRD表明纳米晶FeS 1和FeS 2处于六方黄铁矿Fe ₉ S ₁₀晶相中，而FeS 3纳米晶在黄铁矿-6C Fe ₁₁ S ₁₂晶相中。TEM图像显示FeS 1和FeS 2的平均直径为5.42和25.07 nm的纳米晶体分别获得FeS 3的平均粒径为6.40 nm的硫化铁簇。从Tauc图获得的光学带隙对于FeS 1，FeS 2和FeS 3纳米晶体分别为3.90、3.90和3.96 eV ，这表明归因于量子限制的蓝移。