以氧化石墨烯为载体，通过水热法制备了氧化石墨烯- Fe2O3复合材料，并利用X射线衍射、扫描电镜和X射线光电子能谱等手段对其进行了表征；在H2O2- 紫外光体系中加入一定量的GO- Fe2O3光催化剂，研究了其光催化氧化脱硝性能。光催化氧化实验结果表明，NO转化率随催化剂投加量、H2O2浓度、溶液温度、氧气浓度等因素的增加而提升，达到一定值后转化率保持不变或转而降低，即在催化剂投加量0. 5 g/100 mL，H2O2浓度0. 5 mol/L，溶液温度30 ℃，氧气体积浓度为6%时，氮氧化物转化效率达84. 33%。
Abstract
Graphene oxide has been made by improved Hummers method, then using graphene oxide as a carrier to the hydrothermal preparation of graphene oxide iron oxide composite material (GO- Fe2O3), by adjusting the additive amount of raw materials, reaction temperature and time conditions changed into the structure and properties of composite materials. Using, X- ray diffraction (XRD), scanning electron microscopy (SEM) and X- ray photoelectron spectroscopy of the product have been characterized. A certain amount of catalyst in H2O2/UV system was added, the photocatalytic oxidation denitrification performance was studied. The experiment shows that, the conversion rate of NOx improved with the increasing of catalyst dosing quantity, concentration of H2O2, solution temperature, oxygen concentration until they reach a certain value. And then conversion rate remains unchanged or to reduce. The best process parameters : catalyst dosing quantity is 0. 5 g/100 mL, H2O2 concentration 0. 5 mol/L, solution temperature 30 ℃, oxygen volume concentration is 6%, nitrogen oxide degradation efficiency up to 84. 33%.
关键词
氧化石墨烯 /
氧化铁 /
光催化 /
烟气脱硝 /
水热法
{{custom_keyword}} /
Key words
grapheneoxide /
ironoxide /
photocatalysis /
denitrification /
hydrothermal
{{custom_keyword}} /
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
参考文献
[1] Omidvarborna H., Kumar A., Kim D. NOx emissions from low-temperature combustion of biodiesel made of various feedstocks and blends. Fuel Processing Technology, 2015, 140:113-118
[2] Zhang Z., Crocker M., Chen B., et al. Pt-free, non-thermal plasma-assisted NOx storage and reduction over M/Ba/Al2O3 (M = Mn, Fe, Co, Ni, Cu) catalysts. Catalysis Today, 2015, 256, Part 1:115-123
[3] Yamamoto A., Mizuno Y., Teramura K., et al. Surface Ba species effective for photoassisted NOx storage over Ba-modified TiO2 photocatalysts. Applied Catalysis B: Environmental, 2016, 180:283-290
[4] 梁俊宁，陈洁，卢立栋，等.煤化工行业氮氧化物排放系数研究.中国环境科学.2014(04):862-868.
Junning Liang，Jie Chen，Lidong Lu, et al. Nitrogen Oxides Emission Coefficient of Coal Chemical Industry. China Environmental Science. 2014(04): 862-868(in Chinese)
[5] 赵毅，朱洪涛，安晓玲，等.燃煤电厂SCR烟气脱硝技术的研究.电力环境保护.2009, 25(01):7-10.
Yi Zhao，Hongtao Zhu，Xiaoling An, et al. Study on SCR Technique for Flue Gas Denitrification in Coal-fired Powerplants
. Electric Power Environmental Protection. 2009, 25(01): 7-10(in Chinese)
[6] 杜振，钱徐悦，何胜，等.燃煤电厂烟气SCR脱硝成本分析与优化.中国电力.2013, 46(10).
Zhen Du，Xuyue Qian，Sheng He，等. Analysis and Optimization for Operating Costs of Gas SCR De NOx in Coal-Fired Power Plants
. Electric Power. 2013, 46(10)Chinese)
[7] 柏源，薛建明，李忠华，等.光催化氧化NO研究进展.化工进展.2010(03):569-578.
Yuan Bo，Jianming Xue，Zhonghua Li, et al. Progress in photocatalytic oxidation of nitrogen oxides from flue gas. Chemical Industry and Engineering Progress. 2010(03): 569-578(in Chinese)
[8] 盛国栋，李家星，王所伟，等.提高TiO2可见光催化性能的改性方法.化学进展.2009(12):2492-2504.
Guodong Sheng，Jiaxing Li，Suowei Wang，et al. Modification to Promote Visible-Light Catalytic Activity of TiO2. Progress in Chemistry. 2009(12): 2492-2504(in Chinese)
[9] 闫世成，罗文俊，李朝升，等.新型光催化材料探索和研究进展.中国材料进展.2010(01).
Shicheng Yan，Wenjun Luo，Zhaosheng Li，et al. 2010(01)Chinese)
[10] Liu S., Zhu J., Guo X., et al. Preparation of α-Fe2O3–TiO2/fly ash cenospheres photocatalyst and its mechanism of photocatalytic degradation. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2015, 484:434-440
[11] Chen J., Xie Z., Tang J., et al. Oxidation of toluene by dielectric barrier discharge with photo-catalytic electrode. Chemical Engineering Journal, 2016, 284:166-173
[12] Liu H., Dong X., Nan L., et al. A novel fabrication of silver-modified TiO2 colloidal-assembled microstructures and enhanced visible photocatalytic activities. Materials Letters, 2015, 159:142-145
[13] 袁小亚.石墨烯的制备研究进展.无机材料学报.2011(06):561-570.
Xiaoya Yuan. Progress in Preparation of Graphene. Journal of Inorganic Materials. 2011(06): 561-570(in Chinese)
[14] 李旭，赵卫峰，陈国华.石墨烯的制备与表征研究.材料导报.2008(08).
Xu Li，Weifeng Zhao，Guohua Chen. 2008(08)Chinese)
[15] 邹正光，俞惠江，龙飞，等.超声辅助Hummers法制备氧化石墨烯.无机化学学报.2011(09):1753-1757.
Zhengguang Zou，Huijiang Yu，Fei Long, et al. Preparation of Graphene Oxide by Ultrasound-Assisted Hummers Method. Chinese Journal of Inorganic Chemistry. 2011(09): 1753-1757(in Chinese)
[16] 杜卫平，李臻，冷文华，等.氧化铁和羟基氧化铁光催化还原银离子.物理化学学报.2009(08):1530-1534.
Weiping Du，Zhen Li，Wenhua Leng, et al. Photocatalytic Reduction of Silver Ions on Ferric Oxides and Ferric Hydroxides
. Acta Physico-Chimica Sinica. 2009(08): 1530-1534(in Chinese)
[17] 娄向东，王天喜，刘双枝，等.氧化铁光催化降解活性染料的研究.环境污染治理技术与设备.2006(04):97-99.
Xiangdong Lou，Tianxi Wang，Shuangzhi Liu, et al. Study on the photocatalytic degradation of reactive dyes by Fe2O3. Techniques and Equipment for Environmental Pollution Control. 2006(04): 97-99(in Chinese)
[18] 刘翠，李保山，吴艳萍.纳米棒状α-Fe2O3的制备及其光催化性能.工业催化.2007(10):51-54.
Cui Liu，Baoshan Li，Yanping Wu. Preparation of nanoparticlerod-shaped α-Fe2O3 and its photocatalytic behaviors. Industrial Catalysis. 2007(10): 51-54(in Chinese)
[19] Liu Q., Zhang L., Li H., et al. One-pot synthesis of porphyrin functionalized γ-Fe2O3 nanocomposites as peroxidase mimics for H2O2 and glucose detection. Materials Science and Engineering: C, 2015, 55:193-200
[20] 王海燕，蒋展鹏，杨宏伟.电助光催化氧化过程中羟基自由基(OH·)的定量分析.环境工程学报.2008(02):225-228.
Haiyan Wang，Zhanpeng Jiang. Quantitative analysis of OH.generated in electrically. Chinese Journal of Environmental Engineering. 2008(02): 225-228(in Chinese)
[21] 彭黎琼，谢金花，郭超，等.石墨烯的表征方法.功能材料.2013(21):30553059.
Liqiong Peng，Jinhua Xie，Chao Guo, et al. Review of characterization methods of graphene. Journal of Functional Materials. 2013(21): 30553059(in Chinese)
[22] Yang D., Velamakanni A., Bozoklu G., et al. Chemical analysis of graphene oxide films after heat and chemical treatments by X-ray photoelectron and Micro-Raman spectroscopy. Carbon, 2009, 47(1):145-152
{{custom_fnGroup.title_cn}}
脚注
{{custom_fn.content}}
