| N-TiO2/PSF中空纤维复合膜光催化烟气脱硝研究 |
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| 引用本文： | 陈洲洋,黎宝仁,王剑斌,张再利,樊青娟,魏在山. N-TiO2/PSF中空纤维复合膜光催化烟气脱硝研究[J]. 环境科学学报, 2016, 36(3): 1042-1049 |
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| 作者姓名： | 陈洲洋 黎宝仁 王剑斌 张再利 樊青娟 魏在山 |
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| 作者单位： | 中山大学环境科学与工程学院, 广东省环境污染控制与修复技术重点实验室, 广州 510275,中山大学环境科学与工程学院, 广东省环境污染控制与修复技术重点实验室, 广州 510275,中山大学环境科学与工程学院, 广东省环境污染控制与修复技术重点实验室, 广州 510275,中山大学环境科学与工程学院, 广东省环境污染控制与修复技术重点实验室, 广州 510275,中山大学环境科学与工程学院, 广东省环境污染控制与修复技术重点实验室, 广州 510275,中山大学环境科学与工程学院, 广东省环境污染控制与修复技术重点实验室, 广州 510275 |
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| 基金项目： | 国家自然科学基金项目(No.21377171);中央高校基本科研业务费专项资金资助 |
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| 摘 要： | 采用溶胶-凝胶法以聚砜(PSF)中空纤维膜为载体制备了N-Ti O2/PSF中空纤维复合膜催化剂,考察其光催化烟气脱硝性能.紫外光催化的NO去除效率可达63%,去除负荷可达213.6 g·m-3·h-1.采用紫外-可见光谱(UV-Vis)、X-射线光电子能谱(XPS)和傅里叶变换红外光谱(FTIR)表征了N-Ti O2/PSF中空纤维复合膜催化剂.UV-Vis光谱分析表明,掺杂N改性的Ti O2复合膜光催化层在紫外和可见光波段的吸收性能都有极大的改善.XPS证明了O—Ti—N键能的存在.N-Ti O2/PSF中空纤维膜光催化处理NO的作用机制为NO气体通过中空纤维膜传质到NTi O2催化膜,光催化产生羟基自由基和超氧负离子,NO气体被羟基自由基和超氧负离子氧化成易处理的NO2和HNO3.
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| 关 键 词： | 膜催化 光催化 N-TiO2/PSF 一氧化氮 |
| 收稿时间： | 2015-04-15 |
| 修稿时间： | 2015-05-13 |
Photocatalytic conversion of NO by N-TiO2/PSF hollow fiber membrane reactor |
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| CHEN Zhouyang,LI Baoren,WANG Jianbin,ZHANG Zaili,FAN Qingjuan and WEI Zaishan. Photocatalytic conversion of NO by N-TiO2/PSF hollow fiber membrane reactor[J]. Acta Scientiae Circumstantiae, 2016, 36(3): 1042-1049 |
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| Authors: | CHEN Zhouyang LI Baoren WANG Jianbin ZHANG Zaili FAN Qingjuan WEI Zaishan |
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| Affiliation: | Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275,Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275,Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275,Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275,Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275 and Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275 |
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| Abstract: | The N-doped titanium dioxide (N-TiO2) was prepared by thesol-gel method and was loaded on polysulfone (PSF) hollow fiber membrane. It was used for the treatment of NOx under the UV irradiation. NO removal efficiency was up to 63% and the maximum elimination capacity reached 213.6 mg·m-3·h-1. UV-Vis spectra, X-ray photoelectron spectroscopy (XPS), and Fourier Transform Infrared Spectrometer (FT-IR) were used to characterize the prepared N-TiO2/PSF. The UV-vis spectra results showed that N-TiO2 increased the absorption capacity of UV and visible band. XPS proved the presence of O-Ti-N. NO was diffused from the gas phase to the surface of the N-TiO2, and then oxidized into NO2 and HNO3 by strong oxidant hydroxyl radical and O2-. |
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| Keywords: | membrane catalytic photocatalytic oxidation N-TiO2/PSF NO |
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