Effect of Thermal and Wet Chemical Treatments on The Electrical Conductivity of Active Carbon | ||
| Iraqi National Journal Of Chemistry | ||
| Article 1, Volume 0, Issue 46, September 2014, Pages 178-188 | ||
| Authors | ||
| Mohsin.Eerybi. Aldokheily; Abeer Qias Abdulwahab; Saher Abdulredha Ali | ||
| Abstract | ||
| Abstract Activated carbon is a weak conductor 18x10-3 Sm-1 , it's electrical conductivity could be enhanced either by heating the specimen in an open oven to a temperature of 100 to 600 oC ,or by different wet chemical treatments including: acids, organic solvents, reducing agents, oxidizing agents, and finally consecutive chemical treatments .The electrical conductivities were increased compared to the untreated specimens as follow: Acids( HCl 60.3% , Nitric 55.2%. Sulfuric 48.7%,Phosphoric 41%. Acetic 15.4% ). Organic solvents( Chloroform 45.9%,Acetone 34.5%,Diethyl ether 3.1%.Cyclohexane26.3%).Reducing agents (Sodium borohydride 57.5%, Zinc chloride/ HCl 40.9%).Hummer's Reagent 42.2% . Bromine 27.2% . Consecutive treatments a)Solvent – Oxidizing agent –Reducing agent 70.9%.b) Solvent –Reducing agent –Oxidizing agent 69.2 %.Heat / Air (100 oC: 9%,250 oC : 18.1%, 350 oC: 26.1%, 450 oC 36.3% , 600 oC: 45.4%Sample treated with sodium borohydride shows a highest pore area 222.87 g m-2 compared to untreated specimen 153.76 g m-2 and that treated with hydrochloric acid 171.27 g m-2. XRD, ATR, FT-IR and TGA techniques were implemented to monitor structural changes induced by above mentioned treatments. | ||
| Keywords | ||
| activated carbon; surface modification; electrical conductivity; acid treatment; electrical properties; FTIR; ATR; TGA; XRD; and particle size | ||
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