Abstract:

In order to enhance the industrial application value of Stellera chamaejasme Linn and expand the utilisation space of cesium salt resources in the salt lake，Stellera chamaejasme Linn was activated with cesium chloride as the activator and chemical activation method was used to prepare Stellera chamaejasme Linn activated carbon with uniform pore size.Iodine and methylene blue were used as adsorbents to test the adsorption performance of activated carbon.The experiments were carried out by fully automated specific surface area analyser（BET），X-ray diffractometer（XRD），Raman spectrometer，scanning electron microscope（SEM），Fourier-transform infrared spectroscopy（FT-IR），and X-ray electron spectroscopy（XPS） to examine the specific surface area of the activated carbon，the surface morphology，the surface functional groups and the pore structure.The test results showed that the wolfsbane activated carbon prepared in this study was an amorphous activated carbon.The surface functional groups of the activated carbon were mainly carbon-containing and oxygen-containing functional groups.The specific surface area of this activated carbon was 549.42 m²/g，the iodine adsorption value was 530.4 mg/g，the methylene blue adsorption value was 133.7 mg/g，and the predominant pore size was 1.01 nm，and the pore volume was 0.25 cm³/g，and it was microporous activated carbon，and the carbon yield was 17.71%.This study provided a theoretical basis for the utilisation of Stellera chamaejasme Linn resources and cesium salt resources in Qinghai.

Key words: Stellera chamaejasme Linn, cesium chloride, microporous activated carbon, activator