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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2023.6
- 수록면
- 164 - 176 (13page)
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초록· 키워드
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In this paper, Cobalt-doped α-MnO₂ (i.e., Co-α-MnO₂) were synthesized through hydrothermal method. Phenol was employed as targeted pollutants to investigate the catalytic ozonation performance of Co-α-MnO₂. Results showed that Co-α-MnO₂ significantly improved the phenol removal increased to 97.47 % after 40 min, which was 16.46 %, 38.92 % higher than that of α-MnO₂ catalytic ozonation and single ozonation without catalyst. Additionally, the physicochemical properties of α-MnO₂ and Co-α-MnO₂ were analyzed using technologies such as XRD, TEM, BET and XPS. Compared to α-MnO₂, Co-α-MnO₂ has larger specific surface area (79.496 m²/g) and pore volume (0.0396 cm³/g), higher Mn<SUP>3+</SUP> relative content (41.16 %) and adsorbed oxygen content (18.99 %). Also, the oxygen vacancy content, lattice defect content and surface hydroxyl content of Co-α-MnO₂ are higher than that of α-MnO₂, which could result in higher catalytic oxidation performance of Co-α-MnO₂. The influence of masking agent showed that surface hydroxyl group, •OH and •O<SUP>2-</SUP> were involved in the catalytic ozonation of phenol. This study could help recognize the role of surface hydroxyl groups and active free radicals and demonstrate the contribution of reactive oxygen species on phenol removal in Co-α-MnO₂ systems.
목차
ABSTRACT
1. Introduction
2. Experimental
3. Results and Discussions
4. Conclusion
References
참고문헌 (51)
참고문헌 신청
Aziz KHM, Miessner H, Mueller S, et al. Comparative study on 2,4-dichlorophenoxyacetic acid and 2,4-dichlorophenol removal from aqueous solutions via ozonation, photocatalysis and non-thermal plasma using a planar falling film reactor. J. Hazard. 2018;343
Aziz KHM. Application of different advanced oxidation processes for the removal of chloroacetic acids using a planar falling film reactor. Chemosphere. 2019;228:377-383. https://doi.org/10.1016/j.chemosphere.2019.04.160.
Chen CM, Li Y, Ma WF, Guo SH, Wang QH, Li QX. Mn-Fe-Mg-Ce loaded Al2O3 catalyzed ozonation for mineralisation of refractory organic chemicals in petroleum refinery wastewater. Sep. Purif. Technol. 2017;183:1-10. https://doi.org/10.1016/j.seppur.2017.03.05
Wang J, Chen H. Catalytic ozonation for water and wastewater treatment: recent advances and perspective. Sci. Total. Environ. 2020;704:135249.6. https://doi.org/10.1016/j.scitotenv.2019.135249
Hu L, Xia Z. Application of ozone micro-nano-bubbles to groundwater remediation. J. Hazard. Mater. 2018;342:446-453. https://doi.org/10.1016/j.jhazmat.2017.08.030
Aziz KHM. Application of different advanced oxidation processes for the removal of chloroacetic acids using a planar falling film reactor. Chemosphere. 2019;228:377-383. https://doi.org/10.1016/j.chemosphere.2019.04.160.
Chen CM, Li Y, Ma WF, Guo SH, Wang QH, Li QX. Mn-Fe-Mg-Ce loaded Al2O3 catalyzed ozonation for mineralisation of refractory organic chemicals in petroleum refinery wastewater. Sep. Purif. Technol. 2017;183:1-10. https://doi.org/10.1016/j.seppur.2017.03.05
Wang J, Chen H. Catalytic ozonation for water and wastewater treatment: recent advances and perspective. Sci. Total. Environ. 2020;704:135249.6. https://doi.org/10.1016/j.scitotenv.2019.135249
Hu L, Xia Z. Application of ozone micro-nano-bubbles to groundwater remediation. J. Hazard. Mater. 2018;342:446-453. https://doi.org/10.1016/j.jhazmat.2017.08.030
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