Abstract: Using fish scales as raw materials, activated carbon with high specific surface area and a large number of micropores was prepared by phosphoric acid activation. Fourier transform infrared spectroscopy (FT-IR), scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS) and Boehm titration were used to characterize the structural characteristics and surface composition of fish scale carbon. The results showed that the yield of activated carbon was 26.74% when 85% phosphoric acid was used and impregnation ratio is 2 (phosphoric acid and raw material mass ratio of fish scale) was activated under 550 ℃ for 1.0 h. The adsorption value of methylene blue was 213 mg/g, the adsorption value of iodine was 936.46 mg/g, the specific surface area was 498.162 cm2/g, the total pore volume was 0.266 cm3/g and the average pore diameter was 2.138 nm. Boehm titration has a total acidity of 1.678 mmol/g and a total alkalinity of 0.433 mmol/g. Its surface contains amphoteric functional groups. Among them, acid functional groups are hydroxyl, carboxylic acid group, lactone group and other oxygen-containing functional groups and phosphorous functional groups, while alkaline functional groups are amide, lactam, pyridine type and pyrrole type nitrogen-containing functional groups.
作者简介: 张净净,青海民族大学硕士研究生;李海朝,青海民族大学教授,硕士生导师。2003年获博士学位,2005年博士后出站。加拿大新布伦瑞克大学访问学者(合作教授为加拿大院士Dr. Y. H. Ni)。青海省化学会委员,青海省级高等学校青年骨干教师,省级自然科学化学工程学科带头人。现任青海民族大学化学化工学院副院长,负责学院科研、学科建设和研究生工作。主持国家自然科学基金,省部级科研项目等科研课题多项。
引用本文:
张净净, 李海朝. 磷酸活化鱼鳞活性生物炭的制备及表征[J]. 材料导报, 2020, 34(Z1): 116-119.
ZHANG Jingjing, LI Haichao. Preparation and Characterization of Fish Scale Activated Carbon byPhosphoric Acid. Materials Reports, 2020, 34(Z1): 116-119.
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