Journal of Jishou University(Natural Sciences Edition) ›› 2022, Vol. 43 ›› Issue (4): 72-80.DOI: 10.13438/j.cnki.jdzk.2022.04.013

• Biology and chemical industry • Previous Articles     Next Articles

Photocatalytic Degradation of Bisphenol a by Sulfur-Modified Cadmium-Rich Biomass Carbon

CAO Jiaji,WANG Ping,LING Dingxun,HUANG Chao   

  1. (College of Environmental Science and Engineering,Central South University of Forestry and Technology,Changsha 410004,China)
  • Online:2022-07-25 Published:2022-10-28

Abstract: Using biomass sorghum after remediation of cadmium-contaminated soil as raw material,sulfur-modified biochar based photocatalyst was prepared by calcination and hydrothermal reaction.The morphology and crystal structure of the photocatalyst were analyzed by scanning electron microscopy and X-ray diffraction.The results showed that cadmium sulfide crystals were successfully loaded on the biochar.The photocatalytic degradation experiment found that the photocatalyst can rapidly degrade bisphenol A (BPA) in water,and its photocatalytic degradation rate is 15.5 times and 2.4 times that of biomass sorghum biochar and cadmium sulfide,respectively.The influencing factor experiment found that the acidic conditions and the increase of the material dosage can significantly improve the photocatalytic degradation rate of BPA.Cycling experiments showed that the material has good photocatalytic stability,and quenching experiments showed that the main active species in the reaction are holes (h+),followed by ·OH and ·O-2.

Key words: biomass sorghum, biochar, photocatalysis, BPA

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