Absolute ethyl alcohol

Bamboo powder (60~100 meshes) with a moisture of 6~8% was collected from Anji County in Zhejiang province, China. NaClO₂ (95~98 wt%), NaOH (96 wt%), 2,2,6,6-tetramethylpiperidin–1-oxyl radical (TEMPO), NaBr, NaClO (11 wt%; available chlorine ≥5.2%), CH₃CH₂OH (98wt%), HCl (98 wt%), and acetic acid (36 wt%) were analytical reagents and purchased from Sinopharm Chemical Reagent Co., Ltd. Hydriodic acid (45~55 wt%) and absolute ethyl alcohol (99 wt%) were obtained from Shanghai Macklin Biochemical Technology Co., Ltd. Single-layer GO aqueous dispersion at a concentration of 10 mg/g was purchased from Hangzhou GaoxiTech Co., Ltd.

Analytical-grade purity SnCl₄·5H₂O (99.0%), NaOH, and absolute ethyl alcohol were purchased from Shanghai Macklin Biochemical Co., Ltd, Shanghai, China and were used without further purification.

Corn stalk, sawdust, cotton, fabric, melamine sponge, and copper mesh were purchased from a local market. The cotton sample is the raw fiber. The fabric used is the cotton gauze, which has wrap and weft yarns of 32 counts of pure cotton with a number of 50 × 44 per square inch. Zinc chloride (ZnCl₂, 99%), pyrrole (C₄H₄NH, 99%), hexadecyltrimethoxysilane (HDTMS, CH₃(CH₂)₁₅Si(OCH₃)₃, ≥85%), ammonium hydroxide (NH₃∙H₂O, 28%), absolute ethyl alcohol (C₂H₅OH), acetic acid (CH₃COOH, 99.5%), ethyl acetate (C₄H₈O₂, 99%), liquid paraffin (99%), benzene (C₆H₆, ≥99.5%), petroleum ether, tetrachloromethane (CCl₄, 98%) methylbenzene (C₇H₈, 99%), chloroform (CHCl₃, 99%), and dichloromethane (CH₂Cl₂, 99%) were acquired from Shanghai Macklin Biochemical Co., Ltd. (Shanghai, China). Sodium hydroxide (NaOH, ≥96.0%), hydrochloric acid (HCl, 36.5%∼38%), and ferric trichloride (FeCl₃, 99%) were purchased from Tianjin Kermel Chemical Reagent Co., Ltd. (Tianjin, China). The engine oil, diesel, and corn oil were obtained locally.