[1]徐雯,董世闻,汪达,等.富氧空位二氧化锰对水中臭氧分解的催化性能[J].中国给水排水,2025,41(9):94-100.
　XUWen,DONGShi-wen,WANGDa,et al.Catalytic Performance of Oxygen-enriched Vacuolar Manganese Dioxide for Ozone Decomposition in Water[J].China Water & Wastewater,2025,41(9):94-100.
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富氧空位二氧化锰对水中臭氧分解的催化性能

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第41卷 期数: 2025年第9期 页码: 94-100 栏目: 出版日期: 2025-05-01
Title:
Catalytic Performance of Oxygen-enriched Vacuolar Manganese Dioxide for Ozone Decomposition in Water
作者:
徐雯1， 董世闻1， 汪达1， 宋爽1， 马军2
（1.浙江工业大学环境学院 浙江省工业污染微生物控制技术重点实验室，浙江 杭州 310032；2.哈尔滨工业大学环境学院 城市水资源与水环境国家重点实验室，黑龙江 哈尔滨 150090）
Author(s):
XU　Wen1， DONG　Shi-wen1， WANG　Da1， SONG　Shuang1， MA　Jun2
（1. Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province， College of Environment， Zhejiang University of Technology， Hangzhou 310032， China； 2. State Key Laboratory of Urban Water Resource and Environment， School of Environment， Harbin Institute of Technology， Harbin 150090， China）
关键词:
氧空位;  α-MnO2;  臭氧分解;  催化性能
Keywords:
oxygen vacancy;  α-MnO2;  ozone decomposition;  catalytic performance
摘要:
通过浓硫酸蚀刻法制备了富含氧空位的α-MnO2纳米材料（α-MnO2-OV）用于水中臭氧分解。与未经硫酸蚀刻的α-MnO2相比，α-MnO2-OV表现出优异的臭氧分解效能。当催化剂投量为0.05 g/L、臭氧浓度为3 mg/L时，α-MnO2-OV可在30 min内实现98.0%的臭氧分解率。通过扫描电子显微镜（SEM）、X射线衍射仪（XRD）、X射线光电子能谱仪（XPS）和电子顺磁共振（EPR）等手段对催化剂进行表征可知，催化剂表面的氧空位是促进臭氧分解的活性点位。经过4次循环实验后，α-MnO2-OV对臭氧的分解率仍可达95%以上，且其表面结构和晶体结构均基本保持不变。
Abstract:
An α-MnO2 nanomaterial (α-MnO2-OV) enriched with oxygen vacancies was synthesizedvia concentrated sulfuric acid etching method for the decomposition of ozone in water. Compared to α-MnO2 without sulfuric acid etching, the α-MnO2-OV sample exhibited significantly enhanced ozonolysisperformance. When the catalyst dosage was 0.05 g/L and the ozone concentration was 3 mg/L, α-MnO2-OV achieved an ozone decomposition efficiency of 98% within 30 minutes. By means of scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and electron paramagnetic resonance (EPR), it was observed that the oxygen vacancies on the catalyst surface serve as active sites to enhance ozone decomposition. After four experimental cycles, the ozone decomposition efficiency of α-MnO2-OV could still reach over 95%, and both its surface structure and crystalline structure remained largely unchanged.
更新日期/Last Update: 2025-05-01