Preparation of Heterogeneous Fenton Catalysts Cu-Doped MnO2 for Enhanced Degradation of Dyes in Wastewater
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作者:
Liu, Xiao
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机构:
North Minzu Univ, Sch Mat Sci & Engn, Yinchuan 750021, Peoples R China
North Minzu Univ, Key Lab Polymer Mat & Mfg Technol, Yinchuan 750021, Peoples R China
Int Sci & Technol Cooperat Base Ind Waste Recyclin, Yinchuan 750021, Peoples R ChinaNorth Minzu Univ, Sch Mat Sci & Engn, Yinchuan 750021, Peoples R China
Liu, Xiao
[1
,2
,3
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Wang, Lu
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North Minzu Univ, Sch Mat Sci & Engn, Yinchuan 750021, Peoples R ChinaNorth Minzu Univ, Sch Mat Sci & Engn, Yinchuan 750021, Peoples R China
Wang, Lu
[1
]
Li, Jiran
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North Minzu Univ, Sch Mat Sci & Engn, Yinchuan 750021, Peoples R ChinaNorth Minzu Univ, Sch Mat Sci & Engn, Yinchuan 750021, Peoples R China
Li, Jiran
[1
]
Li, Rong
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North Minzu Univ, Sch Mat Sci & Engn, Yinchuan 750021, Peoples R ChinaNorth Minzu Univ, Sch Mat Sci & Engn, Yinchuan 750021, Peoples R China
Li, Rong
[1
]
He, Runze
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North Minzu Univ, Sch Mat Sci & Engn, Yinchuan 750021, Peoples R ChinaNorth Minzu Univ, Sch Mat Sci & Engn, Yinchuan 750021, Peoples R China
He, Runze
[1
]
Gao, Wanglong
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North Minzu Univ, Sch Mat Sci & Engn, Yinchuan 750021, Peoples R ChinaNorth Minzu Univ, Sch Mat Sci & Engn, Yinchuan 750021, Peoples R China
Gao, Wanglong
[1
]
Yu, Neng
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机构:
Huadian Elect Power Res Inst Co, Hangzhou 310012, Peoples R ChinaNorth Minzu Univ, Sch Mat Sci & Engn, Yinchuan 750021, Peoples R China
Yu, Neng
[4
]
机构:
[1] North Minzu Univ, Sch Mat Sci & Engn, Yinchuan 750021, Peoples R China
[2] North Minzu Univ, Key Lab Polymer Mat & Mfg Technol, Yinchuan 750021, Peoples R China
[3] Int Sci & Technol Cooperat Base Ind Waste Recyclin, Yinchuan 750021, Peoples R China
[4] Huadian Elect Power Res Inst Co, Hangzhou 310012, Peoples R China
Cu-doped MnO2;
nanocatalyst;
Congo red degradation;
heterogeneous Fenton reaction;
D O I:
10.3390/nano14100833
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
Herein, a series of heterogeneous Fenton catalysts, Cu doped MnO2 (CDM), with different Cu/Mn molar ratios were prepared via a hydrothermal reaction. Meanwhile, detailed characterizations were used to study the structures of CDM, and it is amazing that the morphology of CDM changed from nanowires to nanoflowers with an increasing amount of Cu doped. Apart from this, both the specific surface area and oxygen vacancy increased obviously with the increasing Cu/Mn molar ratio. Then, the degradation of different dyes was utilized to evaluate the catalytic activity of different CDM with H2O2 used as the oxidizing agent, and the 50%-CDM with the highest content of Cu doped displayed the best catalytic activity. Herein, the degradation efficiency (D%) of Congo red (CR) solution with low concentration (60 mg/L) reached 100% in 3 min, while the D% of CR solution with a high concentration (300 mg/L) reached 99.4% after 5 min with a higher dosage of H2O2. Additionally, the 50%-CDM also displayed excellent reusability, for which the D% values were still higher than 90% after the 14th cycles. Based on the structure characteristics and mechanism analysis, the excellent catalytic capacity of 50%-CDM was due to the combined influence of large specific surface area and abundant oxygen vacancy. Thus, a promising heterogeneous Fenton catalyst was developed in this study, which proved the treatment efficiency of actual dye wastewater.
机构:
Nanjing Tech Univ, Natl Engn Res Ctr Special Separat Membrane, State Key Lab Mat Oriented Chem Engn, Nanjing 210009, Jiangsu, Peoples R ChinaNanjing Tech Univ, Natl Engn Res Ctr Special Separat Membrane, State Key Lab Mat Oriented Chem Engn, Nanjing 210009, Jiangsu, Peoples R China
Zhou, Hongjia
Kang, Lin
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Nanjing Tech Univ, Natl Engn Res Ctr Special Separat Membrane, State Key Lab Mat Oriented Chem Engn, Nanjing 210009, Jiangsu, Peoples R ChinaNanjing Tech Univ, Natl Engn Res Ctr Special Separat Membrane, State Key Lab Mat Oriented Chem Engn, Nanjing 210009, Jiangsu, Peoples R China
Kang, Lin
Zhou, Ming
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机构:
Nanjing Tech Univ, Natl Engn Res Ctr Special Separat Membrane, State Key Lab Mat Oriented Chem Engn, Nanjing 210009, Jiangsu, Peoples R ChinaNanjing Tech Univ, Natl Engn Res Ctr Special Separat Membrane, State Key Lab Mat Oriented Chem Engn, Nanjing 210009, Jiangsu, Peoples R China
Zhou, Ming
Zhong, Zhaoxiang
论文数: 0引用数: 0
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机构:
Nanjing Tech Univ, Natl Engn Res Ctr Special Separat Membrane, State Key Lab Mat Oriented Chem Engn, Nanjing 210009, Jiangsu, Peoples R ChinaNanjing Tech Univ, Natl Engn Res Ctr Special Separat Membrane, State Key Lab Mat Oriented Chem Engn, Nanjing 210009, Jiangsu, Peoples R China
Zhong, Zhaoxiang
Xing, Weihong
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机构:
Nanjing Tech Univ, Natl Engn Res Ctr Special Separat Membrane, State Key Lab Mat Oriented Chem Engn, Nanjing 210009, Jiangsu, Peoples R ChinaNanjing Tech Univ, Natl Engn Res Ctr Special Separat Membrane, State Key Lab Mat Oriented Chem Engn, Nanjing 210009, Jiangsu, Peoples R China
机构:
Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou 510006, Guangdong, Peoples R ChinaGuangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou 510006, Guangdong, Peoples R China
Su, Xiaohui
Yu, Lin
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Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou 510006, Guangdong, Peoples R ChinaGuangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou 510006, Guangdong, Peoples R China
Yu, Lin
Cheng, Gao
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Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou 510006, Guangdong, Peoples R ChinaGuangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou 510006, Guangdong, Peoples R China
Cheng, Gao
Zhang, Huanhua
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机构:
Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou 510006, Guangdong, Peoples R ChinaGuangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou 510006, Guangdong, Peoples R China
Zhang, Huanhua
Sun, Ming
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机构:
Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou 510006, Guangdong, Peoples R ChinaGuangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou 510006, Guangdong, Peoples R China
Sun, Ming
Zhang, Lei
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机构:
Natl Res Council Canada, Vancouver, BC V6T 1W5, CanadaGuangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou 510006, Guangdong, Peoples R China
Zhang, Lei
Zhang, Jiujun
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机构:
Natl Res Council Canada, Vancouver, BC V6T 1W5, CanadaGuangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou 510006, Guangdong, Peoples R China
机构:
Chinese Acad Sci, Ecoenvironm Sci Res Ctr, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R ChinaChinese Acad Sci, Ecoenvironm Sci Res Ctr, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China
Ge, HT
Qu, HH
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机构:
Chinese Acad Sci, Ecoenvironm Sci Res Ctr, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R ChinaChinese Acad Sci, Ecoenvironm Sci Res Ctr, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China