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Liu M, Guan L, Wen Y, Su L, Hu Z, Peng Z, Li S, Tang Q, Zhou Z, Zhou N. Rice husk biochar mediated red phosphorus for photocatalysis and photothermal removal of E. coli. Food Chem 2023; 410:135455. [PMID: 36641916 DOI: 10.1016/j.foodchem.2023.135455] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 11/06/2022] [Accepted: 01/08/2023] [Indexed: 01/12/2023]
Abstract
The current photocatalytic bactericidal materials in the field of food pathogen control are usually consisted of metals that always suffering from poor stability and possible secondary pollution. Besides, the requirement for high energy excitation also inspires the enthusiasm on exploring non-metallic catalysts. Herein, the non-metallic composite of rice shell biochar loaded with red phosphorus (B@RP) was developed for photocatalysis and photothermal removal of bacteria. The B@RP showed effective photocatalysis performance to stimulate the generation of OH and O2- free radicals for the elimination of Escherichia coli (E. coli). At the same time, the photothermal effect of B@RP can also increase the permeability of cell membrane, which is conducive to free radicals entering the cell interior. Therefore, the non-metallic composite could achieve complete removal of E. coli within 2 h under illumination. Meanwhile, B@RP had excellent stability and the sterilization efficiency maintained 100% after 9 cycles. Hence, B@RP is expected to be a harmless and efficient bactericidal material for food industry.
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Affiliation(s)
- Meng Liu
- Hunan Engineering Research Center for Biochar, Hunan Agricultural University, Changsha 410128, China; College of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, China
| | - Liqian Guan
- Hunan Engineering Research Center for Biochar, Hunan Agricultural University, Changsha 410128, China; College of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, China
| | - Yujiao Wen
- Hunan Engineering Research Center for Biochar, Hunan Agricultural University, Changsha 410128, China; College of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, China
| | - Lezhu Su
- Hunan Engineering Research Center for Biochar, Hunan Agricultural University, Changsha 410128, China; College of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, China
| | - Zhan Hu
- Hunan Engineering Research Center for Biochar, Hunan Agricultural University, Changsha 410128, China; College of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, China
| | - Zhengjie Peng
- Hunan Engineering Research Center for Biochar, Hunan Agricultural University, Changsha 410128, China; College of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, China
| | - Shikai Li
- Hunan Engineering Research Center for Biochar, Hunan Agricultural University, Changsha 410128, China; College of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, China
| | - Qiyuan Tang
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China
| | - Zhi Zhou
- Hunan Engineering Research Center for Biochar, Hunan Agricultural University, Changsha 410128, China; College of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, China
| | - Nan Zhou
- Hunan Engineering Research Center for Biochar, Hunan Agricultural University, Changsha 410128, China; College of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, China.
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