Naclo2

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.

Graphene was purchased by Ningbo Moxi Tech. Co., Ltd. (China). 3, 4, 9, 10-Perylene tetracarboxylic anhydride (PTCDA) was purchased from the Xiya Chemical Reagent Company (Chengdu, China). 6-Aminocaproic acid, imidazole, triphenylphosphine (TPP) and Calcium chloride anhydrous were all purchased from Aladdin Chemistry Co., Ltd, China. Ethanediamine (EDA), Pyridine (Py), methanol, 30% hydrochloric acid, the solvent N-methyl-2-pyrrolidone (NMP) and N, N-dimethylformamide (DMF) were analytical grade, provided by Guangdong Guanghua Sci-Tech Co., Ltd, China. Sisal fibers were bought from Guangxi Sisal Company, China. NaClO₂, CH₂ClCOOH, anhydrous ethanol, Na₂SO₄•10H₂O, CH₃COOH, NaOH, H₂SO₄ and H₂O₂ were purchased from Sinopharm Chemical Reagent Co., Ltd China. All other reagents and solvents were used without further purication.

Abandoned corn stalks were collected from the surrounding market and was used to produce corn stalk biomass fiber. Sodium chlorite (NaClO₂, Sinopharm Chemical Regent Co., Ltd., Shanghai, China), NaOH (Sinopharm Chemical Regent Co., Ltd., Shanghai, China), HAc (Sinopharm Chemical Regent Co., Ltd., Shanghai, China), NaAc (Sinopharm Chemical Regent Co., Ltd., Shanghai, China), NaCl (Sinopharm Chemical Regent Co., Ltd., Shanghai, China), FeCl₃·6H₂O (Sinopharm Chemical Regent Co., Ltd., Shanghai, China, 99.0%), Na₃C₆H₅O₇·2H₂O (Sinopharm Chemical Regent Co., Ltd., Shanghai, China), chitosan (CS, Sinopharm Chemical Regent Co., Ltd., Shanghai, China) and HCl (Sinopharm Chemical Regent Co., Ltd., Shanghai, China, 37%). Chloramphenicol (CAPC) was provided from Aladdin Reagent Co., Ltd. (Shanghai, China).