▎ 摘　　要

NOVELTY - Synthesisizing nickel-manganese-sulfur (Ni-Mn-S) decorated reduced graphene oxide (rGO) nano-composite involves (a) dissolving nickel chloride hexahydrate (NiC12.6H2O) (0.5M) in 60 mL deionization (DI) water by using a magnetic stirrer, adding MnCl2.4H2O into the stirring solution and treating homogeneous suspension into the stirred solution with 1 gram cetyltrimethyl ammonium bromide (CTAB), (b) treating with 200 mg reduced graphene oxide (rGO) and stirred for 30 minutes into the treated solution, adding thiourea (0.5M) into the treated solution dropwise under the stirring conditions and then ultrasonicating 30 minutes, (c) modifying p1-1 to 9 with addition of NaOH (2M) by using obtained solution for 24 hrs synthesis process in a hydrothermal reaction at 160℃, (d) centrifuging and washing the synthesised product at several times with deionization (Dl) water, acetone and ethanol, (e) drying the final precipitate synthesised product at 100℃ overnight. USE - Method for synthesisizing nickel-manganese-sulfur decorated reduced graphene oxide nanocomposite for ultra-fast photocatalytic degradation of organic dyes. ADVANTAGE - The Ni-Mn-S/rGO nanocomposite showed the high photocatalytic degradation efficiency of acid yellow (AY) and rose bengal (RB) dyes (20 ppm concentration) with efficiency at 96.1 and 93.2 %, respectively, within 150 mins natural sunlight irradiation (claimed). The method enables to prepare effective Ni-Mn-S cauliflower structure decorated reduced graphene oxide (rGO) nanocomposite as an effective visible photo-catalyst for reduction CN of textile toxic organic dyes. DETAILED DESCRIPTION - Synthesisizing nickel-manganese-sulfur (Ni-Mn-S) decorated reduced graphene oxide (rGO) nano-composite involves (a) dissolving nickel chloride hexahydrate (NiC12.6H2O) (0.5M) in 60 mL deionization (DI) water by using a magnetic stirrer, adding MnCl2.4H2O (manganese chloride tetrahydrate) into the stirring solution and treating homogeneous suspension into the stirred solution with 1 gram cetyltrimethyl ammonium bromide (CTAB), (b) treating with 200 mg reduced graphene oxide (rGO) and stirred for 30 minutes into the treated solution, adding thiourea (0.5M) into the treated solution dropwise under the stirring conditions and then ultrasonicating 30 minutes, (c) modifying p1-1 to 9 with addition of NaOH (2M) by using obtained solution for 24 hrs synthesis process in a hydrothermal reaction at 160℃, (d) centrifuging and washing the synthesised product at several times with deionization (Dl) water, acetone and ethanol, (e) drying the final precipitate synthesised product at 100℃ overnight, where same procedure is used to obtain for NiS and MnS and Ni-Mn-S, and (e) using modifihe ed Hummers' technique to prepared reduced graphene oxide (rGO) CN nanosheet.