The sodium hydroxide (NaOH), hydrochloride (HCl), ammonium persulfate ((NH 4 ) 2 S 2 O 8 ), concentrated sulfuric acid (H 2 SO 4 ), 30 wt% hydrogen peroxide solution (H 2 O 2 ), cellulose acetate butyrate (CAB), ethyl acetate, ethanol, and acetone (>99%, analytical grade) were purchased from Sigma-Aldrich, and used without further purication. Sodium perchlorate (NaClO 4 , metals basis, 99.99%) was obtained from Merck and used as a supporting electrolyte in our electrochemical experiment with a concentration of 10 mM or 100 mM. Deionized water (pH ∼ 5.6) was provided by a Milli-Q system (resistivity $ 18.2 MU cm and TOC # 4 ppb). CVD-grown monolayer graphene on a copper foil was purchased from Grolltex Inc.
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Electrochemical Analysis of Monolayer Graphene
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Corresponding Organization : Max Planck Institute for Polymer Research
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Variable analysis
independent variables
- Sodium perchlorate (NaClO4) concentration (10 mM or 100 mM)
- Not explicitly mentioned
- Sodium hydroxide (NaOH)
- Hydrochloride (HCl)
- Ammonium persulfate ((NH4)2S2O8)
- Concentrated sulfuric acid (H2SO4)
- 30 wt% hydrogen peroxide solution (H2O2)
- Cellulose acetate butyrate (CAB)
- Ethyl acetate
- Ethanol
- Acetone (>99%, analytical grade)
- Deionized water (pH ~5.6, resistivity ≥18.2 MΩ cm, TOC ≤4 ppb)
- CVD-grown monolayer graphene on a copper foil
- Not mentioned
- Not mentioned
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